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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 - s8 X# F& Y' R* y" l
5 R! o" W( m& N# g- C/ f# @, x 9# jjj18
$ L1 \" R8 P2 W) E; R7 MPlease be aware :
! C! w1 m3 o: [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.
2 ^" K. U0 {0 H( N2. 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.
: j, W! Q3 Z! m, w3. 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)
8 T; _ c" U4 F2 O4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.- d7 e7 D( ^& f" p* R% i) \. C* I2 g
So to make job easy and fast I prefer to use more pipes.
% _1 i0 {% ^* T- P3 g" q6 z8 @$ ` As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.$ N# {/ o3 a: z- {8 o# V" B, I" `
The distance of 18 inches is mandatory by SHELL.
8 L. X, T& W* g7 @/ E/ JIn this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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