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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 :4 Z9 u5 u9 i: A$ D1 b/ n1 I& 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.
/ @5 ]5 N2 y. r; o2 j% [, [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. / u t. B$ a# u6 E2 D) m* |# o
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) + D' N9 r& S- y8 a' ?& V! E
4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.3 h" G: Q% t1 k$ V0 f
So to make job easy and fast I prefer to use more pipes.
S/ U, Q, J; ?0 N As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray./ ~, j' w. x! l1 L/ x! h$ q
The distance of 18 inches is mandatory by SHELL.4 `( y5 C; A9 g, z ]* ?! t
In this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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