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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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& @: \# R- c/ \. _Please be aware :1 }9 M9 B: Y$ J7 \" y$ X
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. # G. Y) U2 A/ d8 o1 A, S4 \* N
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. # M- g! f1 O+ t. w8 w) K/ ^
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)
4 }# g, O; P! L4 j* `4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.
( {, @6 Y: ]- z( X: i0 v' z. d So to make job easy and fast I prefer to use more pipes. + E- \9 d t# E- E2 b( d
As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.5 o2 j# _# H; ]0 N% n, R3 ?* i
The distance of 18 inches is mandatory by SHELL.
1 R( {5 F* e0 Q6 ?# {: y: hIn this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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