This preview shows page 1. Sign up to view the full content.
Unformatted text preview: ot used for dancing)
Refrigeration Storage Rooms:
Rubbish Storage Rooms
Assembly and Rapair
Heavy Materials assembly
Light Materials assembly
Plate (except storage areas)
Storage and Supply Rooms
Aircraft Ammunition (one story)
Fuse and Detonator ( 1 story)
First Floor Second Floor
Above Third Floor
LIVE LOADS FOR SPECIAL OCCUPANCY MATERIAL Section 1.05: Roof Loads
General. Roof shall sustain, within stress limitations of this code all "dead loads" plus unit
"live loads" as set forth in Table No. 1.05-A. The live loads shall be assumed to act vertically upon the
area projected upon a horizontal plane.
(b) Unbalanced Loading. Unbalanced loads shall be used where such loading will result in larger
members of connections. Trusses and arches shall be designed to resist stresses caused by unit live loads
on one-half of the span if such loading results in reverse stresses, or stresses greater in any portion thatn
the streamer produced by the required unit live load upon the entire span. For roofs whose structure is
composed of a stressed shell, frmaed or solid, wherein stresses caused by any point loading are
distributed throughout the area of the shell, the requirements for unbalanced unti live load design may be
reduced 50 per cent.
Special-purpose roofs. Roofs to be used for special purposes shall be designed for
appropriate loads as approved by the Building Official.
Greenhouses, Iath houses, residential patio structures and agricultural building shall be designed for
a vertical live load of not less than 50 kilograms per square meter (10 pounds per square foot).
Water Accumulation. All roofs shall be designed with sufficient slope or camber to assure
adequate drainage after the long-time deflection from dead load or shall be designed to support maximum loads including possible ponding of water due to deflection. See Section 1.07 for deflection
criteria. TABLE NO. 1.05-A
MAXIMUM ROOF LIVE LOADS TRIBUTARY LOADED AREA FOR ANY STRUCTURAL MEMBER Section 1.06: Reduction of Live Loads
The following reductions in unit live loads as set forth in Tables 1.04-A, 1.04-B and 1.04-C for
floors, shall be permitted in the design of columns, piers, walls, foundations, trusses, beams, and flat
Except for places of public assembly, and except for live loads greater than 500 kilograms per square
meter (100 pounds per square foot) the design live load on any member supporting fourteen square
meters (one hundred and fifty square feet) or more may be reduced at the rate of 0.40% per square meter
(0.08% per square foot) of area supported by the member. The reduction shall not exceed 60 percent nor
View Full Document
- Fall '12