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National building code of the philippines 2011 pdf

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Full text of the National Building Code of the Philippines (Republic Act No. ) - Featured on the Internet by the Chan Robles Virtual Law Library. structure as provided for in the National Building Code; building rules and . National Building Code PD - soundofheaven.info . Emerging Issues Download as PPTX, PDF, TXT or read online from Scribd . RA entitled An Act to Ordain and Institute a National Building Code of the Philippines was passed by the defunct congress in .. _LFD_Retaining_Walls_Sept_ .pdf.


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WHEREAS, while there is Republic Act No. , entitled "An Act to. Ordain and Institute a National Building Code of the Philippines", the same does not. REGULATIONS. OF THE. NATIONAL BUILDING CODE. OF THE PHILIPPINES. ( PD ). OFFICIAL TEXT. REVISED EDITION. INCLUDES. • NBCDO. Implementing Rules and Regulations of the National Building Code of the Philippines (PD). It appears your Web browser is not configured to display PDF.

Stephanie Siano Lapurga. Where occupant loads are less than the above requirements may be waived: The total area of all openings other than doors. Exits shall be arranged a reasonable distance apart. Chapter 6. Order the work stopped and prescribe the terms and conditions when the work will be allowed to be resumed.

Every interior stairway. A horizontal exit shall lead into a floor area having capacity for an occupant load not less than the occupant load served by such exit. In lieu of a vestibule. The width of ramps shall be as required for corridors. There shall be no openings directly into the interior of the building.

That in other than Group D Occupancies. If conforming to the provisions of this Code. All openings in a separation wall shall be protected by a fire assembly having a fire-resistive rating of not less than one hour.

All exit doors in an exit enclosure shall appropriately be protected. Enclosed corridors or passageways are not required from unenclosed stairways. In buildings five stories or more in height. The capacity shall be determined by allowing 0. A smoke enclosure shall consist of a continuous stairway enclosed from the highest point top the lowest point by walls of two-hour fire-resistive construction.

Access shall be through a vestibule with one wall at 50 per cent open to the exterior and having an exit door from the interior of the building and an exit door leading to the smokeproof enclosure.

Passageways shall be without openings other than required exits and shall have walls. The exit passageway shall be without other openings and shall have walls. Every exit court shall discharge into a public way or exit passageway. That openings more than 3. The guardrail shall make an angle of not more than 30 degrees with the exit court. That for Group A Occupancies the exit illumination shall be provided with separate circuits or separated sources of power but not necessarily separate from exit signs when these are required for exit sign illumination.

All openings into an exit court less than 3. The slope of exit courts shall not exceed 1 in Every exit court and exit passageway shall be at least as wide as the required total width of the tributary exits. Such minimum width shall be measured at the point farthest from an exit. The slope of exit passageways shall not exceed 1 in 8. Exits shall be illuminated at any time the building is occupied with light having an intensity of not less than one-foot candle at floor level: The opening from the vestibule or balcony to the stair tower shall be protected a self-closing fire assembly having a one-hour fire- resistive rating.

At any point where the width of an exit court is reduced from any cause. Every exit court shall be provided with exits as required by this Code. Every portion of every building in which are installed seats. The required width of exit courts or exit passageways shall be unobstructed except as permitted in corridors.

Every exit shall discharge into a public way. Every aisle shall be not less than 90 centimeters 3 feet wide if serving only one side. With standard seating the spacing of rows of seats from back-to-back shall be not less than 84 centimeters 2 feet.

Aisles shall terminate in a cross aisle. With continental spacing. In Groups C. Such exit doors shall provide a minimum clear width of 1. Vomitories connecting the foyer or main exit with the cross aisles shall have a total width not less than the sum of the required width of the widest aisles leading thereto plus 50 per cent of the total required width of the remaining aisles leading thereto.

All interior openings shall be protected as set by internationally recognized and accepted practice for dual purpose fire exit doors. Film laboratories. With continental seating. The width of the cross aisle shall be not less than the sum of the required width of the widest aisle plus 50 per cent of the total required width of the remaining aisle leading thereto. With standard spacing. The width of any seat shall not less than 45 centimeters 1 foot. In area occupied by seats and in Group H and I Occupancies without seats.

The slope portion of aisles shall not exceed 1 in 8. Automatic or self-rising seats shall be measured in the seat-up position. That aisles may be omitted when all the following conditions exists: Seats are without backrest. The minimum unit live load for reviewing stands. The sway force. The maximum rise from one row of seats to the next shall not exceed 40 centimeters 16 inches. For determining the seating capacity of a stand. Aisles shall be provided in all stands: When an aisle is elevated more than 20 centimeters 8 inches above grade.

Seat and footboards shall be There shall be a space of not less than 30 centimeters 12 inches between the back of each seat and front of the seat immediately behind it.

Sway forces need not be applied simultaneously with other lateral forces. The number of seats between any seats and an aisle shall not be greater than 15 for open air stands with seats without backrests. The minimum spacing of rows of seats measured from back-to-back shall be: No obstruction shall be placed in the required width of any aisle or exitway. Stands employing combustible framing shall be limited to 11 rows or 2. The slope of ramp shall be of approved nonslip material.

Where only sections of stands are used. Stairs for stands shall have handrails. The maximum rise of treads shall not exceed 20 centimeters 8 inches and the minimum width of the run shall be 28 centimeters 11 inches. No vertical aisle shall have a dead and more than 16 rows in depth regardless of the number of exits required. Aisles shall have a minimum width of 1. Handrails shall conform to the requirements of this Code. The requirements in this Code shall apply to all stairs and ramps except for portions that pass through the seating area.

Handrails at the front of stands and adjacent to an aisle shall be designed at resist a load of 74 kilograms per linear meter 50 pounds per linear foot applied at the top rail. That the height may be reduced to 90 centimeters 3 feet for guardrails located in front of the grandstand. The intervening space shall have one additional rail midway in the opening: Other handrails shall be designed at resist a load of 9 kilograms 20 pounds. A ramp with a slope exceeding 1 in 10 shall have handrails.

Footboards shall be provided for all rows of seats above the third row. That railings may be omitted when stands are placed directly against a wall or fence giving equivalent protection. An aisle may be considered as only one exit unless it is continuous at both ends to a legal building exit or to a safe dispersal area. If more than persons are to be accommodated within such an area.

Four exits shall be required when a stand or section of stand accommodates more than occupants. The line of travel to an exit shall be not more than For stands with seats without backrests this distance may be measured by direct line from a seat to the exit from the stand. When more than loose chairs are used in connection with athletic events. That when less than 25 chairs are used upon a single raised platform the fastening of seats to the platform may be omitted.

No exit shall be less than 1. When but two exits are provided. The aggregate clear width of exits from a safe dispersal area shall be determined on the basis of not less than one exit unit 56 centimeters 22 inches for each persons to be accommodated and no exit shall be less than 1. Exits shall be arranged a reasonable distance apart. Each safe dispersal area shall have at least two exits. That for an open air stand with seats without backrest four exits need not be provided unless there are accommodations for more than occupants.

The total width of exits in meters shall be not less than the total occupant load served divided by by 50 in feet: Every stand or section of a stand within a building shall have at least two means of egress when the stand accommodates more than 50 persons.

Three exits shall be required for stands within a building when there are more than occupants within a stands. Every open air stand having seats without backrest shall have at least two means of egress when the stand accommodates more than persons. Chairs and benches used on raised stands shall be secured to the platform upon which they are placed: When both horizontal and stair exits are used.

A stand with the first seating board not more than 50 centimeters 20 inches above grade of floor may be considered to have two exits when the bottom of the stands is open at both ends.

Exits shall be a reasonable distance apart but shall be spaced not less than one-fifth of the perimeter of the area apart from each other. All portions of the floor lights or sidewalk lights shall be of the same strength as required for floor or sidewalk lights shall be of the same strength as construction.

Any glass not wire glass shall be protected above and below with a screen constructed of wire not smaller than 12 U. All skylights. Corrugated wired glass may have supports 1. Balconies a Walls and floors in bay and oriel windows shall conform to the construction allowed for exterior walls and floors of the type of construction of the building to which they are attached.

Frames of skylights shall be designed to carry loads required for roofs. Railings shall be provided. Any such glass over square centimeters 16 square inches in area shall have wire mesh embedded in the same or shall be provided with a wire screen underneath as specified for skylights in this Code. Curbs on which the skylight rests shall be constructed of incumbustible materials except for Type I or II constructions.

That skylights over vertical shafts extending through two or more stories shall be glazed with plain glass as specified in this Code: That wire glass may be used if ventilation equal to not less than one-eighth the cross-sectional area of the shaft but never less than 1. The roof covering of a bay or oriel window shall conform to the requirements of the roofing of the main roof.

The use of wood in the frames of skylights will be permitted in greenhouses outside of highly restrictive Fire Zones if the height of the skylights does not exceeds 6.

Skylights a All skylights shall be constructed with metal frames. The screen shall be substantially supported below the glass. All glass in skylights shall be wire glass: Exterior balconies attached to or supported by walls required to be of masonry. The roof covering of the spires shall be as required for the main roof of the roof of the rest of the structure. Skeleton towers used as radio masts.

They shall be design to withstand a wind load from any direction in addition to any other loads. Towers not enclosed and which extend more than Roof structures constructed with walls. No tower or spire shall occupy more than one-fourth of the street frontage of any building to which is attached and in no case shall the base area exceed square meters square feet unless it conforms entirely to the type of construction requirements of the building to which it is attached and is limited in height as a main part of the building.

No such skeleton towers shall be supported on roofs of combustible framings. No penthouse. A penthouse or bulkhead used for purposes other than that allowed by this Section shall conform to the requirements of this Code for an additional story.

If the area of the tower or spire exceeds Towers or spires when closed shall have exterior walls as required for the building to which they are attached.

Penthouses and Roof Structures a Height. The above restriction shall not prohibit the placing of wood flagpoles or similar structures on the roof of any building. No penthouse or other projection above the roof when used as an enclosure for tanks or elevators which run to the roof and in all other cases shall be not extend more than 3.

Every masonry chimneys shall have walls of masonry units. Chimneys for incinerators installed in multi-story buildings using the chimney passageway as a refuse chute where the horizontal grate area of combustion.

Chimneys extending 7. Masonry chimneys for medium- heat appliances shall be constructed of solid masonry units of reinforced concrete not less than 20 centimeters 8 inches thick.

Masonry chimneys shall be constructed of masonry units or reinforced concrete with walls not less than 10 centimeters 4 inches thick or rubble stone masonry not less than 30 centimeters 12 inches thick. The chimneys linear shall be in accordance with this Code. Masonry chimneys shall be constructed of masonry units or reinforced concrete with walls not less than 20 centimeters 8 inches thick except that rubbles stone masonry shall be not less than 30 centimeters 12 inches thick.

No chimney shall support any structural load than its own weight unless it is designed to act as a supporting member. The chimney linear shall be in accordance with this Code. Chimneys in an wood-framed building shall be anchored laterally at the ceiling and each floor line which is more than 1.

Every chimney shall be capable of producing a draft at the appliance not less than the required for the safe operation of the appliance connected thereto.

Masonry chimneys for high-heat appliances shall be constructed with double walls of sold masonry units of reinforced concrete not less than 20 centimeters 8 inches in thickness. Chimneys shall be designed. The inside of the interior walls shall be of firebrick not less than 10 centimeters 4 inches in thickness laid in a solid bid of fire clay mortar with solidly filled head.

If the design capacity or grate area of such an incinerator exceed kilograms pounds per hour and 0. No chimney passageway shall be smaller in area than the vent connection on the appliance attached thereto. Every masonry chimney shall extend at least 60 centimeters 2 feet above the part of the roof through which it passes and at least 60 centimeters 2 feet above the highest elevation of any part of a building within 3.

When more than one passageway is contained in the same chimney. Fire clay chimney linings shall be installed ahead of the construction of the chimney as it is carried up. Firebrick not less than 5 centimeters 2 inches thick may be used in place of fire clay chimney. In every case the corbeling shall not exceed 2. No masonry chimney shall be corbel from a wall more than 15 centimeters 6 inches nor shall a masonry chimney be corbeled from a wall which is less than 30 centimeters 12 inches in thickness unless it projects equally on each side of the wall.

The lining shall extend from 20 centimeters 8 inches below the lowest inlet or. In the second story of a two-story building of Group A Occupancy. Masonry chimneys for commercial and industrial-type incinerators of a size designed for not more than kilograms pounds or refuse per hour and having a horizontal grate area not exceeding 0. If the grate area of such an incinerator exceeds 0.

No change in the size or shape of a masonry chimney where the chimney passes through the roof shall be made within a distance of 15 centimeters 6 inches above or below the roof joists or rafters. Combustible material shall not be placed within 5 centimeters 2 inches of fireplace.

Walls of fireplaces shall be not less than 20 centimeters 8 inches in thickness. The hoods shall be sloped at an angle of 45 degrees or less from the vertical and shall extend horizontally at least 15 centimeters 6 inches beyond the limits of the firebox.

Smoke chamber back walls shall not be not less than 15 centimeters 6 inches in thickness. Walls of fireboxes shall be not less than 25 centimeters 10 inches in thickness: Metal hoods used as a part of a fireplace or barbecue shall be not less than No.

Approved metal heat circulators may be installed fireplaces. The firebox shall be not less than 50 centimeters 20 inches in depth. Combustible materials shall not be placed within 5 centimeters 2 inches of smoke chamber walls or masonry chimney walls when built within a structure. In lieu of 2. Walls of chimneys without flue lining shall be not less than 20 centimeters 8 inches in thickness. Factory-built metal room heating stoves may be used in accordance with generally recognized engineering practices.

Cleanout opening shall be provided at the base of every masonry chimney. Front and side walls shall be not less than 20 centimeters 8 inches in thickness. Metal hoods shall be kept a minimum of 40 centimeters 18 inches from combustion materials unless approved for reduced clearances.

Walls of chimneys with flue lining shall be not less than 10 centimeters 4 inches in thickness and shall not be constructed in accordance with this Code. That where a lining of firebrick is used such walls shall be not less than 20 centimeters 8 inches in thickness. This clearance may be reduced to the minimum requirements set forth in this Code. Where dampers are used. Standard automatic fire- extinguishing systems shall comply with requirements of generally recognized and accepted practices and shall be installed in the following places: Every fireplace shall be provided with a brick.

Every building six more stories in height shall be equipped with one or more dry standpipes. No part of metal hoods used as part of a fireplace. Masonry over the fireplace opening shall be supported by an incombustible lintel. This slab shall be not less than 10 centimeters 4 inches thick and shall be supported by incombustible materials or reinforced to carry its own weight and all imposed loads.

Combustible forms and centering shall be removed. When fully opened.

Combustible materials shall not be placed within 15 centimeters 6 inches of the fireplace opening. The net cross-sectional area of the flue and of the throat between the firebox and the smoke chamber of a fireplaces shall be not less than the requirements according to internationally recognized and accepted principles of engineering. Where Required. Dry standpipes shall be of wrought iron or galvanized steel and together with fittings and connections shall be of sufficient strength to withstand 20 kilograms.

All dry standpipes shall be extend from the ground floor to and over the roof and shall be equipped with a 6. All dry standpipes shall be equipped with a two-way 6. The local Fire Department shall be consulted as to the proper size and threads of those connections. All All Siamese inlet connections shall be located on a street front of the building and not less than 30 centimeters 12 inches nor more than 1. An iron or bronze sign with raised letters at least 2.

All outlets shall be equipped with gate valves with substantial chains. Every building six or more stories in height where the area of any floor above the fifth floor is square meters All Siamese inlet connections shall be recessed in the wall or otherwise substantially protected. Standpipes shall be located within stairway landings or near such stairways as possible or immediately inside of an exterior wall and 30 centimeters 12 inches of an opening in a stairway enclosure of the balcony or vestibule of a smokeproof tower or an outside exit stairway.

Tests shall be conducted by the owner or his representative or contractor in the presence of a representative of the City or Municipal Fire Department whenever deemed necessary for the purpose of certification of its proper function.

Subject to the provisions of subparagraph 2. Dry standpipes shall be of such size as to be capable of delivering liters gallons per minute from each of any three outlets simultaneously under the pressure created by one fire engine or pumper. Provided, That Group H buildings having no stage and having a seating capacity of less than need to be equipped with interior standpipes.

Buildings of Groups H and I Occupancies shall have wet standpipe systems capable of delivering the required quantity and pressure from any two outlets simultaneously; for all other occupancies only one outlet need be figured to be at one time. In no case shall the internal diameter of a vet standpipe be less than 5 centimeters 2 inches , except when the standpipe is attached to an automatic fire-extinguishing system as set by the internationally recognized and accepted engineering practices.

The Building Official may require delivery and pressure tests on completed wet standpipe systems before approving such systems. Wet standpipes shall be so located that any portion of the can be reached therefrom with a hose not exceeding In Groups H and I Occupancies, outlets shall be located as follows: Where occupant loads are less than the above requirements may be waived: Provided, That portable fire-extinguishers of appropriate capacity and type are installed within easy access from the said locations.

In Groups B, C, D, E, F, and G Occupancies the location of all interior wet standpipes shall be in accordance with the requirements for dry standpipes: Provided, That at least one wet standpipe is installed to cover not more than square meters square feet.

All interior wet standpipes shall be equipped with a 3. All hose threads in connection with the installation of such standpipes, including valves and reducing fittings, shall be uniform with that used by the local Fire Department. All interior wet standpipes shall be connected to a street water main not less than 10 centimeters 4 inches in diameter, or when the water pressure is sufficient, to a water tank of sufficient size as provided in subparagraph 8.

When more than one interior wet standpipe is required in the building, such standpipes shall be connected at their bases or at their tops by pipes of equal size. Such tanks shall be located so as to provide not less than Discharge pipes from pressure tanks shall extend 5 centimeters 2 inches into and above the bottom of such tanks. All tanks shall be tested in place after installation and proved tightly at a hydrostatic pressure 50 per cent in excess of the working pressure required.

Where such tanks are used for domestic purpose the supply pipe for such purposes shall be located at or above the center line of such tanks.

2011 the pdf national philippines of code building

Incombustible supports shall be provided for all such supply tanks and not less than centimeters 3-foot clearance shall be maintained over the top and under the bottom of all pressure tanks. Fire pumps shall have a capacity of not less than liters gallons per minute with a pressure of not less than The source of supply for such pump shall be a street water main of not less than centimeter 4-inch diameter or a well or cistern containing a one-hour supply.

Such pumps shall be supplied with an adequate source of power of the building and shall be automatic in operation. Each hose outlet of all interior wet standpipes shall be supplied with a hose not less than 3.

Such hose shall be equipped with a suitable brass or bronze nozzle and shall be not over An approved standard form of wall hose reel or racks shall be provided for the hose and shall be located so as to make the hose readily accessible at all times and shall be recessed in the walls or protected suitable cabinets. Basement pipe inlets shall be installed in the first floor of every store, warehouse, or factory where there are cellars or basements under same: Except, Where in such cellars or basements there is installed a fire-extinguishing system as specified in this Code, or where the cellars or basements are used for banking purposes, safe deposit vaults, or similar uses.

All basement pipe inlets shall be of cast iron, steel brass, or bronze with lids of cast brass or bronze and shall consist of a sleeve not less than 20 centimeters 8 inches in diameter through the floor extending to and flush with the ceiling below and with a top flange, recessed with an inside shoulder, to receive the lid and flush with the finish floor surface. The lid shall be a solid casting and have a ring lift recessed on the top thereof, so as to be flush.

The lid shall be installed in such a manner as to permit its removal readily from the inlet. Basement pipe inlets shall be strategically located and kept readily accessible at all times to the Fire Department. All fire-extinguishing systems, including automatic sprinkles, wet and dry standpipes, automatic chemical extinguishers, basement pipe inlets, and the appurtenance thereto shall meet the approval of the Fire Department of the particular municipality or city as to installation and location and shall be subject to such periodic tests as may require.

Stages and Platforms. There shall be one or more ventilators constructed of metal or other incombustible material near the center and above the highest part of any working stage raised above the stage roof and having a total ventilation area equal to at least five per cent of the floor area within the stage walls.

The entire equipment shall conform to the following requirements:. Ventilators shall open by spring action or force of gravity sufficient to overcome the effects of neglect, rust, dirt, or expansion by heat or warning of the framework. Glass, if used in ventilators, must be protected against falling on the stage. A wire screen, if used under the glass, must be so placed that if clogged it cannot reduce the required ventilating area of interfere with the operating mechanism or obstruct the distribution of water from the automatic fire-extinguishing systems.

Ventilators, penthouses, and supporting framework shall be designed in accordance with this Code. Each ventilator shall be arranged to open automatically after the outbreak of fire by the use of an approved automatic closing device as defined in this Code. The fusible link and operating cable shall hold each door closed against a minimum This minimum counterforce shall be exerted on each door through its entire arc of travel and for a minimum degrees. A manual control shall be provided.

Springs, when employed to actuate ventilator doors, shall be capable of maintaining full required tension indefinitely. Springs shall not be stressed more than 50 per cent of their rated capacity and shall not be located directly in the air stream, nor exposed to the elements.

A fusible link shall be placed in the cable control system on the underside of the ventilator at or above the roof line, and shall be so located as not to be affected by the operation of fire-extinguishing systems. Remote, manual, or electrical control shall provide for both opening and closing of the ventilator doors for periodic testing and shall be located at a point on the stage designated by the Building Official.

When remote control of ventilator is electrical, power failure shall not affect its instant operation in the event of fire. Hand winches may be employed to facilitate operation of manually controlled ventilators. Gridirons and fly galleries shall be designed to. The Type of Construction for platforms shall depend upon the requirements based on the Type of Occupancy and corresponding fire-resistive requirements. A stage shall be completely separated from the auditorium by a proscenium wall of not less than two-hour incombustible construction.

When more than one ventilators is provided. At least one exit not less than 90 centimeters 3 feet wide shall be provided from a passageway not less than 90 centimeters 3 feet in width to a street or exit court.

That the total area shall be equal to five per cent of the area of the platform. The sheave blocks shall be designed to accommodate the maximum load for the loft blocks or head blocks served with a safety factor of five.

Proscenium walls may have. All openings in the proscenium wall of a stage shall be protected by a fire assembly having a one and one-half-hour fire-resistive rating.

Openings through stage floors shall be equipped with tight-fitting trap doors. All parts of the stage floor shall be designed to support not less than kilograms per square meter pounds per square foot. The head block well must be provided with an adequate strongback of lateral brace to offset torque.

Each loft block well shall be designed to support Ventilators shall not be required for enclosed platforms having a floor area of In buildings having a stage.

The proscenium wall shall extend not less than 1. The Type of Construction for stage floors shall depend upon the requirement based on the Type of Occupancy and the corresponding fire-resistive requirements.

Enclosed platforms shall be provided with one or more ventilators conforming to the requirements of stage ventilators: The proscenium opening.

The stairs required in this Subsection need to be enclosed. An exit stair not less than 75 centimeters 2 feet. Each tier of dressing rooms shall be provided with at least two means of egress each not less than 75 centimeters 2 feet. Shutters of a size greater than square centimeters square inches shall be equipped with a counter-balance. There shall also be a fusible link located over the upper magazine of each projector.

Motion Picture Projection Rooms a General. Every projection room shall have at least two doorway separated by not less than one- third the perimeter of the room. That when acetate safety film is used projection ports may be increased in size to an area not to exceed square centimeters square inches.

Each port and every other opening in projection room walls. In addition. Each port opening shall be completely covered with a pane of glass: Ports in projection room walls shall be of three kinds: There shall be provided for each motion picture projector not more than one projection port. Every projection room shall be of not less than one-hour fire-resistive construction throughout and the walls and ceiling shall be finished with incombustible material.

The maximum width of such door need be no more than 75 centimeters 2 feet. There shall be not more than three combination ports. All entrances to a projection room shall be protected by a self- closing fire assembly having a three-fourths hour fire-resistive rating. Such doors shall open outward and lead to proper exits as required in this Code and shall not be equipped with any latch.

The ceiling shall be not less than 2. Shutters shall be arranged to slide without binding in guides constructed of material equal to the shutters in strength and fire resistance. The room shall have a floor area of not less than 7. Exhaust capacity shall be not less than 0. Every projection room shall be provided with unenclosed water closet and lavatory. All films not in actual use shall be stored in metal cabinets having individuals compartments for reels or shall be in generally accepted shipping containers.

No dampers shall be installed in such exhaust systems. TITLE 9. The exhaust system serving the projection room may be extended to cover room associated therewith such as rewind rooms. Chapter 2. Materials and systems of fire-resistive purposes shall be classified according to their fire-resistive ratings as determined by internationally accepted testing methods, subject to the provisions of this Section.

Solid masonry, 10 centimeters 4 inches thick; hollow unit masonry, 15 centimeters 6 inches thick; solid concrete, 10 centimeters 4 inches thick; stud walls covered on each side with 1. Square-edged boards may be used is the layers are laid at right angles with each other.

The supporting beams for such floors shall be not less than 15 centimeters 6 inches in minimum dimension. Steel joist floors shall have from one to four-hour fire-resistive rating based on internationally accepted standards of engineering.

Materials required to be flame-proofed shall be treated with a flame-retardant having flame-spread rating of 50 less as determined by the "Tunnel Test". Finishes for interior walls and ceilings of any building shall be classified according to their flame-spread characteristics using the internationally accepted "Tunnel Test" or other equivalent test for fire protection.

The class of materials according to flame-spread characteristics shall be determined for each occupancy group. The smoke density shall not be greater than that obtain from the burning of untreated wood under similar conditions when tested in accordance with the "Tunnel Test" in the way intended for use.

THE NATIONAL BUILDING CODE OF THE PHILIPPINES[1]

The products of combustion shall be no more toxic than the burning of untreated wood under similar conditions. Interior walls and ceiling finish shall mean interior wainscoting, paneling, or other finish applied structurally or for decoration, acoustical correction, surface insulation or similar purposes.

Requirements for finishes shall not apply to trim, doors, and windows or their frames, nor to materials which are less than one millimeter 0. Interior finish materials applied to walls and ceilings shall be tested as specified herein and regulated for purposes of limiting flame-spread.

Group A Occupancies shall include dwellings. Hotels and Apartments. Group C Occupancies shall be any building used for school or day care purposes more than eight hours per week, involving assemblage for instruction, education, or recreation, and not classed in Group I or in Divisions 1 and 2 of Group H Occupancies.

Group D Occupancies shall include: Division 1 - Mental hospitals, mental sanitariums, jails, prisons, reformatories, and buildings where personal liberties of inmates are similarly restrained; Division 2 - Nurseries for full-time care of children under kindergarten age, hospitals, sanitariums, nursing homes with non-ambulatory patients, and similar buildings each accommodating more than five persons ; Division 3 - Nursing homes for ambulatory patients, homes for children of kindergarten age or over each accommodating more than five persons ; Provided, That Group D Occupancies shall not include buildings used only for private residential purposes or for a family group.

Group E Occupancies shall include: Division 1 - Gasoline filling and service stations; storage garage and boat storage structures where no work is done except exchange of parts and maintenance requiring no open flame, welding, or the use of highly flammable liquids; Division 2 - Wholesale and retail stores, office buildings, drinking and dining establishments having an occupant load test than , printing plants, municipal police and fire stations, factories and workshops using materials not highly flammable or combustible, storage and sales room for combustible goods, and paint stores without bulk handling, and Division 3 -Aircraft hangars where no repair work is done except exchange of parts and maintenance requiring no open flame, welding, or the use of highly flammable liquids; open parking garages and heliports.

Group F Occupancies shall include: Ice plants, power plants, pumping plants, cold storage, and creameries; factories and workshops using incombustible and non-explosive materials; and storage and sales rooms of incombustible and non-explosive materials. Group G Occupancies shall include: Division 1 - Storage and handling of hazardous and highly flammable or explosive materials other than flammable liquids; Division 2 - Storage and handling of flammable liquids; dry cleaning plants using flammable liquids; paint stores with bulk handling; paint shops and spray painting rooms, and shops; Division 3 - Wood working establishments, planning mills and box factories, shops factories where loose, combustible fibers or dust are manufactured, processed or generated; warehouses where highly combustible material is stored; Division 4 - Repair garages; and Division 5 - Aircraft repair hangars.

Group H Occupancies shall include: Division 1 - Any assembly building with a stage and an occupant load of less than in the building; Division 2 - Any assembly building without a stage and having an occupant load of or more in the building; Division 3 - Any assembly building without a stage and having an occupant load of less than in the building, including such buildings used for school purposes less than eight hours per week; and Division 4 - Stadiums, reviewing stands, amusement park structures not included within Group I or Divisions 1, 2, and 3, Group H Occupancies.

Group I Occupancies shall be any assembly building with a stage and an occupant load of or more in the building. Group J Occupancies shall include: Division 1 - Private garages, carports, sheds, and agricultural buildings; Division 2 - Fences over 1. Any other occupancy not mentioned specifically in this Section, or about which there is any question, shall be included in the Group which its use most nearly resembles based on the existing or proposed life and fire hazard.

Except, That the character of occupancy of existing buildings may be changed subject to the approval of the Building Official and the building may be occupied for purposes set forth in other Groups without conforming to all the requirements for those Groups, provided the new or proposed use is less hazardous, based on life and fire risk, than the existing use.

When a building is used for more than one occupancy purposes, each part of the building comprising a distinct "Occupancy" shall be separated from any other occupancy. When a building is used for more than one occupancy purpose, it shall be subject to the most restrictive requirements for the occupancies concerned: Except, - 1 When a one-story building houses more than one occupancy, each portion of the building shall conform to the requirements for the occupancy housed therein, and the area of the building shall be such that the sum of the actual areas divided by the allowable area for each separate occupancy shall not exceed one; and 2 Where minor accessory uses do not occupy more than 10 per cent of the area of any floor of a building, nor more than 10 per cent of the basis are permitted in the occupancy requirements.

The major use of the building shall determine the occupancy classification provided the uses are separated in accordance with requirements for occupancy separation. Occupancy separations shall be vertical or horizontal or both, or when necessary, of such other form as may be required to afford a complete separation between the various occupancy divisions in the building. All openings in such a separations shall be protected a fire assembly having a one-hour fire-resistive rating.

All openings in such separation shall be protected by a fire assembly having a one and one-half-hour fire-resistive rating. All openings in walls forming such separation shall be protected by a fire assembly having a three-hour fire-resistive rating. The total width of all openings in any three-hour fire-resistive occupancy separation wall in any one-story shall not exceed 25 per cent of the length of the wall in that story and no single opening shall have an area greater than All openings in floors forming a "Three-Hour Fire-Resistive Occupancy Separation" shall be protected by vertical enclosures extending above and below such openings.

The walls of such vertical enclosures shall be of not less than ten-hours fire-resistive construction, and all openings therein shall be protected by a fire assembly having one and one-half-hour fire-resistive rating. Occupancy separations shall be provided between various groups, subgroupings, or divisions of occupancies.

The Secretary shall promulgate rules and regulations for appropriate occupancy separations in buildings of mixed occupancy: Provided, That where any occupancy separation is required, the minimum shall be a "One-Hour Fire-Resistive Occupancy Separation"; and where the occupancy separation is horizontal, structural members supporting the separation shall be protected by equivalent fire-resistive construction.

Buildings shall adjoin or have access to a public space, yard, or street on not less than one side. Required yards shall be permanently maintained. For the purpose of this Section, the center line of an adjoining street or alley shall be considered an adjacent property line. Eaves over required windows shall be not less than 75 centimeters 30 inches from the side and rear and rear property lines.

Exterior walls shall have fire resistance and opening protection in accordance with requirements set by the Secretary.

REPUBLIC ACT NO. 6541 (National Building Code of the Philippines)

Projections beyond the exterior wall shall not extend beyond a point one-third the distance to the property line from an exterior wall; or a point one-third the distance from an assumed vertical plane located where fire-resistive protection of openings is first required due to location on property, whichever is the least restrictive. Distance shall be measured at right angles from the property line.

When openings in exterior walls are required to be protected due to distance from property line, the sum of the area of such openings shall not exceed 50 per cent of the total area of the wall in each story. For the purpose of determining the required wall and opening protection, buildings on the same property and court walls shall be assumed to have a property line between them.

When a new building is to be erected on the same property with an existing building, the assumed property line from the existing building shall be the distance to the property line for each occupancy as set forth by the Secretary: Provided, That two or more buildings on the same property may be considered as portions of one building of the aggregate area of such buildings is within the limits of allowable floor areas for a single building; and that when the buildings so considered house different occupancies or are of different types of construction, the area shall be that allowed for the most restricted occupancy or construction.

Allowable floor areas for one-story buildings and buildings over one story shall not exceed the limits determined in accordance with occupancy groups and types of construction.

Each portion of a building separated by one or more area separation walls may be considered a separate building provided the area separation wall meet the requirements of this Code. The height shall be measured from the highest adjoining sidewalk or ground surface, provided that the height measured from the lowest adjoining surface shall not exceed such maximum height by more than 3. Except, That towers, spires, and steeples, erected as a part of a building and not used for habitation or storage, are limited as to height only by structural design if completely of incombustible materials, or may extend not to exceed 6.

Code of building 2011 philippines national pdf the

Maximum Requirements for Group A Dwellings: The dwelling shall occupy not more than 90 per cent of a corner lot and 80 per cent of an inside lot, and subject to the provisions on easements of light and view of the Civil Code of the Philippines, shall be at least 2. Every dwelling shall be so constructed and arranged as to provide adequate light and ventilation. Every dwelling shall be provided with at least one sanitary toilet and adequate washing and drainage facilities.

Pdf 2011 the code national of philippines building

Footing shall be of sufficient size and strength to support the load and dwelling and shall be at least 30 centimeters 1 foot thick and 60 centimeters 2 feet below the surface of the ground.

Each post shall be anchored to such footings by straps and bolts of adequate size. The dimensions of wooden post or suportales shall be those found in Table 3.

The live load of the first floor shall be at least kilograms per square meter 40 pounds per square foot and for the second floor, at least kilograms per square meter 30 pounds per square foot.

The wind load for roofs shall be at least kilograms per square meter 30 pounds per square foot. Stairs may be 75 centimeters 30 inches wide, with a rise of 20 centimeters 8 inches and a run of 23 centimeters 9 inches. There shall be one entrance and one exit.

There shall be at least one convenience outlet per 6. Family dwellings not more than two stories shall be exempt from the requirements of the Mechanical Code. Every building proposed for construction shall be identified according to the following: Type I Buildings shall be of wood construction. The structural elements may be any of the materials permitted by this Code. Type II Buildings shall be of wood construction with protective fire-resistant materials and one-hour fire-resistive throughout: Except, That permanent nonbearing partitions may use fire-retardant treated wood within the framing assembly.

Type III Buildings shall be masonry and wood construction, Structual elements may be any of the materials permitted by this Code: Provided, That the building shall be one-hour fire-resistive throughout.

Exterior walls shall be of incombustible fire-resistive construction. Type IV Building shall be of steel, iron, concrete, or masonry construction. Walls and permanent partitions shall be of incombustible fire-resistive construction: Except, That permanent nonbearing partitions of one-hour fire resistive construction framing assembly.

Type V Buildings shall be fire-resistive. The structural elements shall be of steel, iron, concrete, or masonry construction. Walls and permanent partitions shall be incombustible fire-resistive construction.

Any building which does not conform entirely to a type of construction herein set forth shall be classified into a type having an equal or lesser degree of fire-resistance of the building. Except, That the type of construction of existing buildings may be changed subject to the approval of the Building Official and the building may be constructed for purposes set forth in other Types without conforming to all the requirements for those Types, provided the new or proposed construction is less hazardous, based on life and fire risk, than the existing construction.

Provided , That in no case shall be the minimum horizontal dimension of courts be less than 2. Provided, That for buildings of more than one story, the minimum ceiling height of the first story shall be 2.

Garages shall have an unobstructed headroom clearance of not less than 2. No such shaft shall be less than 60 centimeters 2 feet in its least dimension. Unless open to the outer air at the top for its full area, such shaft shall be covered by a skylight having a net area of fixed louver openings equal to the maximum required shaft area. Air ducts shall be connected to a street or court by a horizontal duct or intake at a point below the lowest window opening on such shaft.

Such duct or intake shall have a minimum unobstructed cross-sectional area of not less than 0. The opening to the duct or intake shall not be less than 30 centimeters 1 foot above the bottom of the shaft and the street surface or bathroom of court, at the respective ends of the conduct or intake.

Skylights shall have a glass area not less than that required for the window they replace.

They shall be equipped with movable sashes or louvers of an aggregate net area not less than that required for openable parts in the window they replace or with approved ventilation of equal efficiency. Rooms containing industrial heating equipment shall be provided with adequate artificial means of ventilation to prevent excessive accumulation of hot or polluted air. When artificial ventilation is required, the equipment shall be designed and constructed to meet the following requirements in air changes: Chapter 5.

Provided, That the top of the said foundations or footings does not reach beyond the level of a plane 60 centimeters 2 feet below the established grade; and Provided, further, That said projection does not obstruct any existing utility such as power, communication, gas, water, or sewer lines, unless the owner concerned shall pay the corresponding entities for the re-routing of the parts affected.

Projection of balconies and Appendages Annex B. The with of the arcade and its height over affected sidewalks shall be uniform within a block: Provided , That, in no case, shall an arcade be less than 3. For the purpose of this Section, a marquee shall include by any object or decoration attached thereto. Projection and Clearance. The horizontal clearance between the outmost edge of the marquee and the curb line shall be not less than 30 centimeters 1 foot.

The vertical clearance between the payment or grounds line and the undersurface of the marquee shall be not less than 2. A Marquee shall be constructed of incombustible material or materials of not less than one-hour fire-resistive construction. It shall provided with the necessary drainage facility. Location Prohibited.

Every marquee shall be so located as not to interfere with the operation of any exterior standpipe connection or to obstruct the clear passage from stairways or exists from the building or the installation or maintenance of electroliers. A n awning is a movable shelter supported entirely from the exterior wall of a building and of a type which can be retracted, folded, or collapsed against the face of a supporting building.

The horizontal clearance between the awning and the curb line shall be not less than 30 centimeters 1 foot. The vertical clearance between the undermost surface of the awning and the payment or ground line shall be not less than 2. Collapsible awnings shall be so designed that they shall not block required when collapsed. The face of the triangle so formed shall be at right angles to the bisector of the angle of intersection of the street lines; Provided, That, in no case, shall the length of the chaflan be less than 4.

In special cases, the Building Official shall determine the size and form of the chaflan. Chapter 6. This protection shall be maintained while such work is being done and shall not obstruct the normal functioning of any such utility. Adequate signs and railings shall be provided to direct pedestrian traffic. Pedestrian traffic shall be protected by a railing on the street side when the walkway extends into the roadway, by a railing when adjacent to excavations, and by such other appropriate portion such as set forth in Table 6.

Railings shall be built substantially and should be at least 1. Fences shall be built of an approved material, not less than 2. Fences shall enclose entirely the building site. Openings in such fences shall be provided with doors which shall be kept closed at all times. The protective canopy shall have a clear height of 2. Every canopy shall have a solid fence built along its entire length on the construction side.

If materials are stored or work is done on top of the canopy, the edge along the street shall be adopted by a tight curb board not less than 30 centimeters 1 foot high and a railing not less than 1. The entire structure shall be designed to carry the loads imposed upon it: Provided, That the live load shall be not less than kilograms per square meter pounds per square foot. Such protection devices shall be properly maintained in place and kept in good order for the entire length of time pedestrians may be endangered.

Every protection fence or canopy shall be removed within 30 days after such protection is no longer required. Subject to the provisions of Articles to of the Civil Code of the Philippines on lateral and subjacent support, the quality of materials and design used structurally in excavations, footings and shall conform to the internationally recognized and accepted principles of engineering.

Adequate signs and safeguards shall be installed around and near the excavation to protect the public from any danger of falling into the excavation. Repeated and flagrant violations of this Section shall be the basis of revocation of any public utility franchise.

This provision shall not exempt the franchise owner and the duly constituted officials thereof from any criminal or civil liabilities arising from such excavations and disturbances to third persons. Veneer is a nonstructural facing of brick, concrete, stone, tile, metal, plastic, glass, or other similar approved materials attached to a backing or structural components of the building for the purpose of ornamentation, protection, or enclosure that may be adhered, integrated, or anchored either on the exterior or interior of the building or structure.

The design of all veneer shall comply with the following: The person undertaking a causing a construction to be undertaken shall observe, to the satisfaction of the Building Official, internationally recognized and accepted principles governing dimensions of units, weights of materials, methods of construction, attachment or anchorage, bonding or anchorage, bonding or adhesion, structural adequacy and type and rigidity of backing, and considerations for differential movements of supports including that caused by temperature changes, shinkage, creep, and deflection.

Vertical openings be enclosed depending upon the fire-resistive requirements of a particular type of construction as set forth in this Code. Walls and partitions enclosing elevators and escalators shall be not less than the fire-resistive construction required under the Types of Construction. Enclosing walls of elevators shafts may consist of wire glass set in metal frames on the entrance side only. Elevator shafts extending through more than two stories shall be equipped with an approved means of adequate ventilation to and through the main roof of the building: Provided, That in buildings housing Groups G and F Occupancies equipped with automatic fire-extinguishing systems throughout, enclosures shall not be required to escalators: Provided, further, That the top of the escalator opening at each story shall be provided with a draft curtain.

Such draft curtain shall enclose the perimeter of the unenclosed opening and shall extend from the ceiling downward at least 30 centimeters 12 inches on all sides. Automatic sprinklers shall be provided around the perimeter of the opening and within 60 centimeters 2 feet of the draft curtain. The distance between the sprinklers shall not exceed 1. All shafts, ducts, chutes, and other vertical openings not covered in paragraph b , above shall have enclosing walls conforming to the requirements specified under the Type of Construction of the building in which they are located.

In other than Group A Occupancies rubbish and linen chutes shall terminate in rooms separated from the remainder of the bidding by a One-Hour Fire-Resistive Occupancy Separation.

Openings into the chutes shall not be located in required exit corridors or stairways. Air ducts passing through a floor shall be enclosed in a shaft. The shaft shall be as required in this Code for vertical openings. Dampers shall be installed where ducts pierce the shaft enclosure walls. Air ducts in Group A Occupancies need not be enclosed in a shaft if conforming to the mechanical provisions of this Code.

Roof coverings for all buildings shall be either fire-retardant or ordinary depending upon the fire-resistive requirements of the particular Type of Construction. The use of combustible roof insulation shall be permitted in all Types of Construction provided it is covered with approved roof covering applied directly thereto. All roofs shall be so framed and tied into the framework and supporting walls so as to form an integral part of the whole building.

Roof trusses shall have all joints well fitted and shall have all tension members well tightened before any load is placed on the truss. Diagonal and sway bracing shall be used to brace all roof trusses. The allowable working stresses of materials in trusses shall conform to this Code.

The minimum net section of the members after framing shall be used in determining the strength on the truss at any point. An attic access opening shall be provided in the ceiling of the top floor of buildings with combustible ceiling or roof construction. The opening shall be located in a corridor or hallway of buildings or three or more stories in height, and readily accessible in buildings of any height. The opening be not less than 55 centimeters by 75 centimeters 22 inches by 30 inches.

Seventy-five centimeters 30 inches minimum clear headroom shall be provided above the access opening. Attics with a maximum vertical clear height of less than 75 centimeters 30 inches need not be provided with access openings. Enclosed attics spaces formed of combustible construction shall be divided into horizontal areas not exceeding square meters square feet by partitions extending from the ceiling to the roof.

Openings in the partitions shall be protected by self-closing doors constructed as required for the partitions: Except, That where the entire attic is equipped with an approved automatic fire-extinguishing system, the attic space may be divided into areas not to exceed square meters square feet.

Regardless of the Type of Construction, draft stops shall be installed in trussed roofs, between roof and bottom chord of trusses, in all buildings exceeding square meters 20, square feet.

Draft stops shall be constructed as for attic area separations, and in accordance with Type of Construction. Enclosed attics and enclosed rafter spaces formed where ceilings are applied direct to the underside of roof rafters, shall have cross ventilation for each separate space by ventilating and openings protected against the entrance of rain.

Roof systems not designed to support accumulated water shall be sloped for drainage. Unless roofs are sloped to drain over roof edges or are designed to support accumulated water, roof drains shall be installed at each low point of the roof.

Roof drains shall be adequate in size to convey the water tributary to the roof drains. Where roof drains are required, overflow drains having the same size as the roof drains shall be installed with the inlet flow line located 5 centimeters 2 inches above the low point of the roof, or overflow scuppers having three times the size of the roof drains may be installed in adjacent parapet walls with the inlet flow line 5 centimeters 2 inches above the low the point of the adjacent roof and having minimum opening height of 10 centimeters 4 inches.

Overflow drains shall be connected to drain lines independent from the roof drains. Roof drainage overflow drains, when concealed within the construction of the building, shall be installed. Roof drainage water from a building shall not be permitted to flow over public property, except for Groups A and J Occupancies.

At the juncture of the roof and vertical surface, flashing and counterflashing shall be provided. The construction of stairs, exits, and occupant loads shall conform to requirements for occupants of buildings, reviewing stands, bleachers, and grandstands.

The occupant load permitted in any building or portion thereof shall be determined by dividing the floor area assigned to that use by the square meters or square feet per occupant according generally accepted principles of engineering.

NATIONAL BUILDING CODE OF THE PHILIPPINES | Building Code | Wall

The capacity of a building containing mixed occupancies shall be determined by adding the number of occupants of the various parts of the building classified as to Occupancy and Type of Construction. Exit requirements of a building or portion thereof used for different purposes shall be determined by the occupant load which gives the largest number of persons. No obstruction shall be placed the required width of an exit except projections permitted by this code.

Any room having an occupant load of more than 50 where fixed seats are not installed, and which is used for classroom, assembly, or similar purpose, shall have the capacity of the room posted in a conspicuous place near the main exit from the room. Approved signs shall be maintained in a legible manner by the owner or his authorized agent, and shall indicate the number of occupants permitted for each room use.

Except in Group A Occupancies, changes in elevation of not less than 30 centimeters 12 inches along any exit serving a tributary occupant load of 10 or more shall be by means of ramps. Every building or usable portion thereof shall have at least one exit. In all occupancies, floors above the first story having an occupant load of more than 10 shall have not less than two exits.

Each mezzanine used for other than storage purposes, if greater in area than square meters square feet , or if more than Every story or portion thereof, having an occupant load of to shall have not less than three exits. Every story or portions thereof, having an occupant load of or more shall have not less than four exits.

The number of exits required from any story of a building shall be determined by using the occupant loads of floors which exit through the level under consideration as follows: The maximum number of exits required for any story shall be maintained until egress is provided from the structure.

For purposes of this Section, basements or cellars and occupied roofs shall be provided with exits as required for stories. Floors above the second story, basements, and cellars used for other than service of the building shall have not less than two exits. The total width of exists in meters shall be not less than the total occupant load served divided by in feet, by Such width of exits shall be divided approximately equally among the separate exits.

The total exit width required from any story of a building shall be determined by using the occupant load of that story, plus the percentage of the occupant loads of floors which exit through the level under considerations as follows: The maximum exit width required from any story of a building shall be maintained. If only two exits are required they shall be placed a distance apart equal to not less than one-fifth of the perimeter of the area served measured in a straight line between exits.

Where three or more exits are required they shall be arranged a reasonable distance apart so that if one becomes blocked others will be available. No point in an unsprinkled building shall be more than In building equipped with a complete automatic fire-extinguishing system the distance from exits may be increased to The provisions herein shall apply to every exit door serving an area having an occupant load more than 10, or serving hazardous rooms or areas.

Exit doors shall swing in the direction of exit travel when serving any hazardous areas or when serving an occupant load of 50 or more. Double acting doors shall not be used as a part of fire assembly, nor equipped with panic hardware.

A double acting door shall be provided with a view panel of not less than square centimeters square inches. Exit door shall be openable from the inside without the use of a key or any special knowledge or effort: Except, That this requirement shall not apply to exterior exit doors in a Group E or F Occupancy if there is a conspicuous, readily visible and durable sign on or adjacent to the door, stating that the door is to remain unlocked during business hours. The locking device must be of a type that will be readily distinguishable as locked.

Flush bolts or surface bolts are prohibited. Every required exit doorway shall be of a size as to permit the installation of a door not less than 90 centimeters 3 feet in width and not less than 2. When installed in exit doorways, exits doors shall be capable of opening at least 90 degrees and shall be so mounted that the clear width of the exitway is not less than 70 centimeters 2 feet, 4 inches.

In computing the required exit width, the net dimension of the exitway shall be used. No leaf an exit door shall exceed 1. Revolving, sliding, and overhead doors shall not be used as required exits. Every required exit door shall give immediate access to an approved means of egress from the building. Regardless of the occupant load, there shall be a floor or landing on each side of and exit door. The floor or landing shall be level with, or not more than 5 centimeters 2 inches lower than the threshold of the doorway: Glass doors shall conform to the requirements specified in Section Other exit doors shall be so marked that they are readily distinguishable from the adjacent construction.

When additional doors are provided for egress purposes, they shall conform to all provisions in the following cases: Approved revolving door having leaves which will collapse under opposing pressures may be used in exit situations: Provided, That such doors have a minimum width of 2.

The provisions herein shall apply to every corridor and exterior exit balcony serving as required exit for an occupant load of more than Every corridor or exterior exit balcony shall be not less in which 1.

The required width of corridors and exterior exit balconies shall be unobstructed: Except, That trim, handrails, and doors when fully opened shall not reduce the required width by more than 18 centimeters 7 inches. Doors in any position shall not reduce the required width by more than one-half. When more than one exit is required, they shall be so arranged to allow going to either direction from any point in the corridor or exterior exit balcony to a separate exit, except for dead ends permitted.

Corridors and exterior exit balconies with dead ends are permitted when the dead ends does not exceed 6. Walls and ceilings of corridors shall be not less than one hour fire-resistive construction: Except, That this requirement shall not apply to exterior exit balcony railings, corridors of a one-story building housing a Group E or F Occupancy occupied by one tenant only and which serves an occupant load of 30 less, nor to corridors, formed by temporary partitions.

Exterior exit balconies cannot project into an area where protected openings are required. Where corridor walls are required to be one-hour fire-resistive construction every interior door opening shall be protected as set forth in generally recognized and accepted requirements for dual purpose fire exit doors.

Other interior openings, except ventilation louvers equipped with approved automatic fire shutters shall be 6.

Notice of the non-issuance. The decision of the Secretary shall be final. Agricultural 5. Educational and Institutional 4. Residential 2.

Commercial and Industrial 3. There shall be kept at the jobsite at all times a logbook wherein the actual progress of construction. Upon completion of the work of construction. No building or structure shall be used or occupied and no change in the existing occupancy classification of a building or structure or portion thereof shall be made until the Building Official has issued a Certificate of Occupancy therefore as provided in this code.

The Building Official shall issue the Certificate of Occupancy within 30 days. Penalties upon conviction: Or both such fine and imprisonment. Imprisonment of not more than 2 years. It shall be unlawful for any person.

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