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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 6 W( h' ^8 w8 h) a
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Please be aware :1 y$ U" i; U1 r" k, 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.
. n1 g5 @: Q$ K/ u+ `* t1 T2. 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. ! @9 F( k' V9 }. E( n6 K% }5 `
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)
Y: r! v9 `3 i3 F* z1 E/ J% _0 P4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.
+ M( q/ h- ^5 U9 T) k" s7 W# m) i So to make job easy and fast I prefer to use more pipes.
7 ]8 f8 |5 m/ C/ | As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.! F6 J: B8 x3 q5 [( L/ H
The distance of 18 inches is mandatory by SHELL.
# y: H( F. j4 ~+ T! D3 F( I4 fIn this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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