(a) Any grandstand or seating arrangement within a portable structure and or tent having seats with backs or a railing guard along the front shall be provided with aisles so located that no seat in a row shall have more than seven seats between it and the nearest aisle.
(b) Aisles provided in compliance with Section 1345.10 shall be of not less than 42 inches in clear width.
(c) Trailer mounted seating on noncombustible decking not exceeding 300 capacity each shall provide aisle ways not less than 36 inches in clear width.
(d) The horizontal distance back to back of seats shall be not less than 30 inches for seats having backrests or not less than 22 inches for bleacher type seats. When the same level is used for both seats and footrests these levels shall be not less than 22 inches in width. There shall be a space of not less than 12 inches between the back of each seat and the front of the seat immediately behind it. All measurements shall be taken between plumb lines.
(e) The width of footboards (footrests) in grandstands shall be not less than nine and one-half inches and that of seat boards not less than seven and one-half inches. Where the same level is not used for both seat foundations and footrests, footrests independent of seats shall be provided.
(f) Bleacher type seats and footrests of grandstands shall be securely supported in such manner that they cannot be displaced inadvertently. Footrests, which are lapped, shall be provided with some positive means to prevent displacement of one piece on the other.
(g) Individual seats or chairs shall be permitted only if firmly secured in rows in an approved manner, except that seats if not more than 16 in number, on level floors, and within railed-in enclosures, such as boxes, need not be fastened.
(h) Spaces underneath grandstands or bleacher seating arrangements shall be kept free of extraneous flammable materials and shall not be occupied for other than protective or exit purposes.
(i) Railings or guards not less than 42 inches high above the aisle surface or platform tread, whichever is adjacent, shall be provided along those portions of the backs and ends of all grandstands where the seats are more than four feet above the ground. Where the front footrest of any grandstand is more than two feet above the ground, railings or guards not less than 33 inches high above such front footrests shall be provided. Openings between the top railing or guard and walkway surface below, if more than 18 inches in height, shall be not more than 11 inches wide. Railings or guards shall be capable of sustaining a vertical load of 100 pounds per linear foot and a horizontal thrust of 50 pounds per linear foot. When grandstands are used adjacent to a wall, railings or guards may be omitted from those portions where such wall affords equivalent safeguard.
(Ord. 58-2007. Passed 1-3-08.)
(Ord. 58-2007. Passed 1-3-08.)