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发表于 2010-4-18 15:27
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本帖最后由 jack_lai 于 2010-4-18 16:39 编辑
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6 O9 h7 \7 n1 I, bPlease be aware :3 e* k5 x0 n0 J
1. In order to reach the instruments which are above the Grid Floor A ,see F1 above, cables coming from the Branch Tray C have to pass the Grid Floor A.
9 {3 p/ f: ^# j+ w% e! s" F; [2. If using basket tray to conduct cables, you have to make a hole at the Grid Floor A by cutting a piece of stuff from the Grid Floor A. then the basket trays can go through the Grid Floor A.
# r7 J2 ]4 v- i E+ h3. IF using a pipe to conduct cables, because the size of the pip is one inch you can make a small hole at the Grid Floor A by a iron bar(撬棍) " h/ V2 `* F" k4 s, A' m, Q# p; Y
4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.
7 Q p9 H- j6 p3 \ So to make job easy and fast I prefer to use more pipes. ( m v. u# ^8 j1 |$ u( J
As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.5 ~* H* ]+ \" `" d/ P" \
The distance of 18 inches is mandatory by SHELL.6 F( u8 |2 i, g, W2 p
In this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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