National Building Code of the Philippines

(d) Canopies . The protective canopy shall have a clear height of 2.40 meters above the railway, and shall be structurally safe. 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 protected by a tight curb board not less than 300 millimeters high and an railing not less than 1.00 meter high shall be provided. The entire structure shall be designed to carry the loads imposed upon it: Provided, that the live load shall be not less than 600 kilograms per square meter. SECTION 1107. Maintenance and Removal of Protective Devices. (a) Maintenance . All protective devices shall be properly maintained in place and kept in good order for the entire length of time pedestrians may be endangered. (b) Removal . Every protective fence or canopy shall be removed within 30 days after such protection is no longer required as determined by the Building Official. SECTION 1108. Demolition. (a) The work of demolishing any building shall not be commended until all the necessary pedestrian protective structures are in place. (b) The Building Official may require the permittee to submit plans, specifications and complete schedule of demolition. When so required, no work shall be done until such plans, specifications and schedule are approved by the Building Official. CHAPTER 12 GENERAL DESIGN AND CONSTRUCTION REQUIREMENTS SECTION 12 01. General Requirements. Buildings proposed for construction shall comply with all the regulations and specifications herein set forth governing quality, characteristics and properties of materials, methods of design and construction, type of occupancy and classification. All other matters relative to the structural design of all buildings and other structures not provided for in this Chapter shall conform with the provisions of the National Structural Code of Buildings, as adopted and promulgated by the Board of Civil Engineering pursuant to the Republic Act Number 544, as amended, other wise known as the "Civil Engineering Law". SECTION 1202 Excavation, Foundation and Retaining Walls. (a) Subject to the provisions of Articles 684 to 686 of the Civil Code of the Philippines on lateral and subjacent support, the design and quality of materials used structurally in excavation, footings, and in foundations shall conform to accepted engineering practice. (b) Excavation and Fills (1) Excavation or fills for buildings or structures shall be so constructed or protected that they do not endanger life or property. (2) Whenever the depth of excavation for any construction is such that the lateral and subjacent support of the adjoining property or existing structure thereon would be affected in a manner that the stability or safety of the same is endangered, the person undertaking or causing the excavation to be undertaken shall be responsible for the expense of underpinning or extending the foundation or footings of the aforementioned property or structure. (3) Excavation and other similar disturbances made on public property shall, unless otherwise excluded by the Building Official, be restored immediately to its former condition within 48 hours from the start of such excavation and disturbances by whosoever caused such excavation or disturbance. (c) Footings, Foundations, and Retaining Walls (1) Footings and foundations shall be of the appropriate type, of adequate size, and capacity in order to safely sustain the superimposed loads under seismic or any conditions of external forces that may affect the safety or stability of the structure. It shall be the responsibility of the architect and/or engineer to adopt the type and design of the same in accordance with the standards set forth by the Secretary. (2) Whenever or wherever there exists in the site of the construction an abrupt change in the ground levels or level of the foundation such that instability of the soil could result, retaining walls shall be provided and such shall be of adequate design and type of construction as prescribed by the Secretary. SECTION 1203. Veneer. (a) Definition . Veneer is a non structural facing of brick, concrete, 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 interior or exterior of the building or structure. (b) Design Requirements. The design of all veneer shall comply with the following: (1) Veneer shall support no load other than its own weight and the vertical dead load of veneer immediately above. (2) Surfaces to which veneer is attached shall be designed to support the additional vertical and lateral loads imposed by the veneer. (3) Consideration shall be given to differential movements of the supports including those caused by temperature changes, shrinkage, creep, and deflection. (4) Adhered veneer and its backing shall be designed to have a bond to the supporting elements sufficient seismic effects on the total assemblage. (15) Anchored veneer and its attachment shall be designed to resist horizontal forces equal to twice the weight of the veneer. (6) Anchors supports and ties shall be non- combustible and corrosion-resistant. SECTION 1204. Enclosure of Vertical Openings. (a) General . Vertical openings shall be enclosed depending upon the fire-resistive requirements of a particular type of construction as set forth in this Code. (b) Elevator Enclosures . Walls and partitions enclosing elevators and escalators shall be of not less than the fire-resistive construction required under the Types of Construction. Enclosing Walls of elevator shafts may consist of wire glass set in metal frames on the entrance side only. Elevator shafts extending through more than two storeys shall be equipped with an approved means of adequate ventilation to and through the main roof of the building: Provided , that in those buildings housing Groups F and G Occupancies equipped with automatic fire-extinguishing systems throughout, enclosures shall not be required for escalators: Provided, further that the top of the escalator opening at each storey 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 300 millimeters on all sides. Automatic sprinkles shall be provided around the perimeter of the opening and within a 600 millimeters of the draft curtain. The distance between the sprinkles shall not exceed 1.80 meters center-to-center. (c) Other Vertical Openings . 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 building by a One-Hour Fire-Resistive Occupancy Separation. Openings into the chutes shall not be located in required exit corridors or stairways.