TTI FLAT JACK, Руководство по установке

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FLAT JACK® Installation Manual
4
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4-6
Using ASCE 7-05, the wind load is combined with other
applicable loads, and appropriate factors of safety are
applied. In this case the controlling load combination is:
F = 0.6 x Dead Weight of Str Wind Load
This load is applied to the layout with various spacing
options and compared with FLAT JACK® capacity
configurations described in paragraph 4.3. With this
design load, Configuration C could be used with a
maximum spacing of 32". Actual spacing would be
determined by rafter spacing.
According to NDS 2005, the appropriate lag screw would
then be 5/16 x 2 ½ “.
Confirm all layouts with your local building official.
Topographic factor: 1
Adjustment factor (
λ
):
1
Importance factor: 1
Total design wind
load: 13.3 psf