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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 s2 T& h2 d, `! ], E3 ^
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Please be aware :
4 j: x; u% J/ |- k* \! O1. 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. 3 P1 V' X3 |3 g7 {8 g
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/ i2 s0 C) d
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)
" |) S5 y2 N/ t0 Y+ V) |5 _0 I4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.
3 C- r, L& g ?! Q) Z So to make job easy and fast I prefer to use more pipes. . c% P/ V/ B/ q' E, p
As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.
9 A5 a, X; x2 b. Q- |3 j' b The distance of 18 inches is mandatory by SHELL.6 ] M) M1 v( `
In this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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