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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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9# jjj18
. }1 C! ~* ]# rPlease be aware :, c# C: m+ {3 X3 L; [
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. . k! m9 ?* S) l/ K
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.
3 p" [( b( b0 N z' x0 o3. 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) 9 } F+ K- A5 I: X
4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.
, H2 M) e, ]) a F( T' @; p So to make job easy and fast I prefer to use more pipes. + J1 M( s$ }& s! w' D+ [" d/ | v
As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.
1 q f' V H2 I1 R. O8 G* d The distance of 18 inches is mandatory by SHELL./ k: G1 t, I: C/ @, k
In this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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