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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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9# jjj18
1 l# Z2 i9 l* \Please be aware :
3 _" [4 ?; Y4 S+ }0 x+ D0 p1. 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. ! W$ V- S8 G, C0 Q/ k( W) w
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.
1 ?5 h# ]4 n1 r. R3. 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)
, l! q+ X9 l8 |. Z# g( M9 \4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time., H3 p' r0 F7 X' e' u
So to make job easy and fast I prefer to use more pipes. ) P, N2 z( R/ ^# q# i0 p
As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.1 e) Y7 @! Y$ z
The distance of 18 inches is mandatory by SHELL.
- E6 {/ K; P4 ?( l3 B; A- X7 fIn this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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