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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 :
: E% m7 \0 C( {* Y. V( U1. 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. . a, b, w: k% l
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. ! \: w% k( g4 ^, K" I
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 H) h. E s! j! Z! P
4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.
8 Y5 x: \3 I, m So to make job easy and fast I prefer to use more pipes. 8 M9 S! K* k" Y. S6 G
As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray., j7 ?9 \' ?5 t+ P4 s$ @8 g& E+ U
The distance of 18 inches is mandatory by SHELL.
9 D$ F1 v, ~" s0 C" Y5 K+ M2 ~In this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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