Building Code of the Philippines(1)

Projection for the structures as a whole seat and

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Unformatted text preview: e sway force, applied seats, shall be 35 kilograms per linear meter parallel to the seats and 15 kilograms per linear meter perpendicular to the seats. Sway forces need not be applied simultaneously with other lateral forces. (3) Spacing of Seats (3.1) Row Spacing The minimum spacing of rows of seats measured from back-to-back shall be : 600 millimeters for seats without backrests in open air stands; 750 millimeters for seats with backrests; and 850 millimeters between for chair seating. There shall be a space of not less than 300 millimeters between the back of each seat and the front of the seat immediately behind it. (3.2) Rise Between Rows The maximum rise from one row of seats to the next shall not exceed 400 millimeters. (3.3) Seating Capacity For determining the seating capacity of a stand, the width of any seat shall not be less than 450 millimeters nor more than 480 millimeters. (3.4) Number of Seats Between Aisles The number of seats between any seat and an aisle shall not be greater than 15 for open air stands with seats without backrests, a far open air stands with seats having backrests and seats without backrests within building and 6 for seats with backrests in buildings. (4) Aisles (4.1) Aisles Required Ailes shall be provided in all stands; Except, that aisles may be omitted when all the following conditions exist: Seats are without backrests; the rise from row to row does not exceed 300 millimeters per roq; the number of rows does not exceed 11 in height; the top seating board is not over 3.00 meters above grade; and the first seating board is not more than 500 millimeters above grade. (4.2) Obstructions No obstruction shall be placed in the required width of any aisle or exitway. (4.3) Stairs required When an aisle shall have a dead end more than 16 rows in depth regardless of the number of exits required. (4.4) Dead End No vertical aisle shall have a dead end more than 16 rows in depth regardless of the number of exits required. (4.5) Width Aisles shall have a minimum width of 1.10 meters. (5) Stairs and Ramps The requirements in this Code shall apply to all stairs and ramps except for portions that pass through the seating area. (5.1) Stair Rise and Run The maximum rise of treads shall not exceed 200 millimeters and the minimum width of the run shall be 280 millimeters. The maximum variation in the width of treads in any one flight shall not be more than 5 millimeters and the maximum variation in one height of two adjacent rises shall not exceed 5 millimeters. (5.2) Ramp Slope The slope of a ramp shall not exceed 1in 8. Ramps shall be roughened or shall be of approved nonslip material. (5.3) Handrails A ramp with a slope exceeding 1 in 10 shall have handrails. Stairs for stands shall have handrails. Handrails shall conform to the requirements of this Code. (6) Guardrails (6.1) Guardrails shall be required in all locations where the top of a seat plank is more than 1.20 meters above the grade and at the front of stands elevated mo...
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