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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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Please be aware :
6 n# \! G; S- g0 V. q1. 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.
( Z* ^! |/ z2 |' ?9 z# H2. 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. , ~4 @0 {% K; p, C$ `6 ?" j9 ^
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) " b2 f/ H- G& U/ @, J3 `
4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time./ z, J( z3 d& s! J3 P' X
So to make job easy and fast I prefer to use more pipes.
/ p) c, B3 U/ e3 j$ d As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.& U" c! v& ?* t6 H6 A* w
The distance of 18 inches is mandatory by SHELL.
6 X6 ?3 p0 n" n* w: gIn this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
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