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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 ! K. f# N" ]6 @
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Please be aware :
- k) p. i4 Q3 A% h4 X. w# V$ I1. 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.
! J, x) H( z5 f2. 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. 4 ~3 E5 @' O4 }- d) B. J, l& U
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) , V/ H5 }+ I" B3 C3 w
4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.
* X- x s# V7 U# s So to make job easy and fast I prefer to use more pipes.
5 ^8 v+ J# Q. u& X% U6 j8 j0 N As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.6 x7 I7 I% z: ]- Z7 B' b, H5 c
The distance of 18 inches is mandatory by SHELL.) I2 l) a; A% U# A% Z z
In this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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