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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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Please be aware :' g, o4 U1 V2 f, A# d# ~/ _
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. 7 R, ]6 m6 D |, A3 C+ ~
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. / `0 e0 v6 e# x, r+ f6 `' Y
3. 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) 5 `. p: x7 k6 E
4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.
/ y/ S* o0 W8 d1 b1 {5 }4 u( Y So to make job easy and fast I prefer to use more pipes. 7 }8 z5 b0 @/ H# ]' ~
As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray. a# F7 c8 C% X* @) z1 g
The distance of 18 inches is mandatory by SHELL.9 R! {' D; [7 u g; B, a, ~! |+ h7 q
In this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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