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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 & y1 D: ?8 U* o3 |6 H q$ ], ^& D
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Please be aware :
5 W8 B# f( b, X# a) _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.
7 D/ J4 q3 n% ~( X- `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. ; r& @: r" t% M: v% d& m3 {
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)
* B3 a* j T+ J7 I1 J7 F4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.
) e$ [ W3 ~3 u+ r So to make job easy and fast I prefer to use more pipes. 6 {: X' g: u$ _
As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.
$ R/ o- n, j6 Q( Y3 y) K The distance of 18 inches is mandatory by SHELL.2 x5 n( {* m' r, C
In this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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