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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 :' y' e) Q% r' R1 A
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.
E- \( c7 G( W8 F/ Q' p% i d9 s' a2. 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. 6 k% Z8 ], l4 H1 B; W8 Q
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) 2 M# _+ \1 k2 o
4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.
, P1 D( W8 V8 g/ \# l: t' A So to make job easy and fast I prefer to use more pipes. * k! o0 [9 W% a6 i" w8 M, X1 A
As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.
9 [. \% ~' t0 ]. N The distance of 18 inches is mandatory by SHELL.
/ \& B1 p( n* W$ D9 UIn this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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