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Unformatted text preview: endages Any direction When connected to, part of, or housed within a building;
towers, tanks, towers and tanks plus contents,
storage racks over 6 feet in height plus contents,
chimneys, smoke stacks and penthouses
When resisting on the ground; tank plus effective
mass of its contents
Any direction 0.20 0.10 Suspended ceiling forming 3 (applies to Seismic
Zones 2 and 3 only)
Any direction 1.00 0.20 Floors and roofs acting as diaphragms2 Any direction 0.10 Connections for exterior panels or elements
complying with Section 2.01 "K" - 5
Section 2.05: Earthquake Recording Instrumentation 2.00 (1) General. Every building over six stories in height with an aggregate floor area of 6,000 square
meters (60,000 square feet) or more, and every building over 10 stories in height regardless of floor area,
shall be provided with not less than three approved recording accellorgraphs.
(2) Location. The instruments shall be located in the basement, midportion, and near the top of the
building. Each instrument shall be located in an accessible position.
(3) Maintenance. Maintenance and service of the instruments shall be provided by the owner of the
building subject to the approval of the Building Official. Data produced by the instruments shall be
made available to the Building Official upon his request. Section 2.06: Wind Pressure
(a) General. Buildings or structures shall be designed to withstand the minimum horizontal and
uplift pressure set forth in Fig. 2.06-B to G and this Section allowing for wind from any direction. the
wind pressure set forth in Figs. 2.06-B to G are minimum values and shall be adjusted by the Building
Officials for areas subject to higher wind pressures. Whent he form factor, as detrmined by the wind
tunnel tests or other recognized methods indicates vertical or horizontal loads of lesser or greater
severity than those produced by the loads herein specified, the structure may be designed accordingly.
Section 3.04: Allowable Unit Stresses
(a) Allowable Uni Stress on Plans. Where structures are designed for use of stress grade lumber,
structural glued-laminated, for plywood used structurally, the allowable unit stresses for the species and
the grade shall be shown on the plans filed with the Building Department.
Except as hereinafter provided, stresses shall not exceed the allowable unit
stresses in pounds per square inch for the respective species and grade in Table
3.04 (b). Grading for wood shall be as per Table 3.04 (A).
For modification of allowable unit stresses for structural glued-laminated lumber,
see also Table 3.04 (C). When the wide face of the lamination is parallel to the
direction of the load and the beam is composed of not less than three laminations,
115 per cent of the bending stresses as set forth in Table No. 3.04 (B) shall apply.
The allowable unit stresses as set forth in Table 3.04 (B) apply to lumber, to
structural glued-laminated lumber and to exterior...
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- Fall '12