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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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* l4 ^, K" P7 g( s6 b2 xPlease be aware :$ V a4 r% Z2 L9 ~4 R7 p
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.
- h+ s0 x' M% j4 e) J) C2. 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. - O# l& x2 o8 h( [1 i9 k6 X
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)
. U! c* g- S& w, ~) Y, V. T4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time.( O* L6 R& P3 x+ x, ^
So to make job easy and fast I prefer to use more pipes.
. P5 x' f$ g& ^4 | As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.
& I9 o( E/ a$ e& T) I5 Y The distance of 18 inches is mandatory by SHELL.: s" I& W& Q5 }8 ?
In this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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