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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 :
/ f' y) ]( P4 F1. 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.
6 D. f, f/ h' M0 m0 p2. 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.
' ^; f7 o v$ ?7 p! [' ~& w& j3. 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) . z! Q0 D4 S) J! c4 u' t, L
4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.: V, C: [% [% P/ ^! o
So to make job easy and fast I prefer to use more pipes. $ H$ |: C* b# v5 A. L, v2 C% e# k6 P
As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.' B/ u# Y2 u$ x/ C3 q+ Z3 [" d
The distance of 18 inches is mandatory by SHELL.; e, J, P" K& U9 L( c2 Z/ O3 k
In this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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