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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 , R$ p. A; t- U! R: Y# V U+ @
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Please be aware :/ H9 O! Q6 c, E$ K3 A. p
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. 1 S! n n3 G# f5 M. V& q
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.
! g4 v9 r3 T0 ?4 o8 z3. 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) 3 a6 @1 L' K% |: F9 n7 L2 q
4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.
1 ~9 J% C- Q m4 J, C: } So to make job easy and fast I prefer to use more pipes.
' [) ~: k" U5 R/ ?& ~% V As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.
2 v( f! U7 K% T4 F" H The distance of 18 inches is mandatory by SHELL.
, z+ x& E' R9 w' F, sIn this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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