// CODE SNIPPET
1607.6 Garages
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TABLE 1607.6 UNIFORM AND CONCENTRATED LOADS
LOADING CLASSa | UNIFORM LOAD (pounds/linear foot of lane) | CONCENTRATED LOAD (pounds)b | |
For moment design | For shear design | ||
H20-44 and HS20-44 | 640 | 18,000 | 26,000 |
H15-44 and HS15-44 | 480 | 13,500 | 19,500 |
For SI: 1 pound per linear foot = 0.0 1459 kN/m, 1 pound = 0.004448 kN, |
1 ton = 8.90 kN. |
a. An H loading class designates a two-axle truck with a semitrailer. An HS loading class designates a tractor truck with a semitrailer. The numbers following the letter classification indicate the gross weight in tons of the standard truck and the year the loadings were instituted. |
b. See Section 1607.6.1 for the loading of multiple spans. |
Areas used for, and restricted by physical limitations of clearance to, the transit or parking of passenger vehicles shall be designed for the uniformly distributed and concentrated loads for parking areas for such vehicles as provided in Table 1607.1 applied without impact. An exception is made for members or constructions which, because of physical limitations, cannot be subjected to direct load from the vehicle or from a jack or hoist used to raise or suspend the vehicle. Such members or constructions shall be designed for the loads corresponding to the actual usage.
Minimum live loads for garages having trucks or buses shall be as specified in Table 1607.6, but shall not be less than 50 psf (2.40 kN/m2), unless other loads are specifically justified and approved by the commissioner. Actual loads shall be used where they are greater than the loads specified in the table.
The concentrated load and uniform load shall be uniformly distributed over a 10-foot (3048 mm) width on a line normal to the centerline of the lane placed within a 12-foot-wide (3658 mm) lane. The loads shall be placed within their individual lanes so as to produce the maximum stress in each structural member. Vertical impact shall be taken as 10 percent of the vertical load. Single spans shall be designed for the uniform load in Table 1607.6 and one simultaneous concentrated load positioned to produce the maximum effect. Multiple spans shall be designed for the uniform load in Table 1607.6 on the spans and two simultaneous concentrated loads in two spans positioned to produce the maximum negative moment effect. Multiple span design loads, for other effects, shall be the same as for single spans.
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