 鲜花( 0)  鸡蛋( 0)
|

楼主 |
发表于 2010-4-18 15:27
|
显示全部楼层
本帖最后由 jack_lai 于 2010-4-18 16:39 编辑 , D# s, y: t6 @/ ~
& q/ }( V# F4 v' g8 H4 C& y4 H 9# jjj18
3 \. z/ P, j8 h# D8 Z! KPlease be aware :9 y2 v4 m3 s- T. l/ b2 L
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.
$ _) O* ^8 z. h/ I* d2. 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. + U. i$ j- t' F) m! W
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) 6 q: _+ F/ {& F4 |" Q, x
4. While you finish one hole for the tray, you can finish 10 holes for the pipe with the same time./ @) b; C D8 O. I/ h$ M5 s+ q
So to make job easy and fast I prefer to use more pipes. 9 M0 W) K" q0 r( p+ y$ E
As shown on F2, see the Ins A. If x or y is >18 inches I cut a hole for the tray.
, _- ^! a+ y5 ]4 ^" c0 r The distance of 18 inches is mandatory by SHELL.
! q- |5 I1 u0 m$ ^In this case about 85% instruments above the Grid Floor A have been serviced by pipes. |
-
|