How to put (70) 2'x4'x5/8" panels in now I have ALLthe L- & T- ceiling grid in place

Is "twist all the T- 's and just push panels up and in, without actually moving the T- grid" done? This may sound like a dumb Q, but if I can and should do this I can get started without making a gigantic plan, accounting in order for each and every piece, with several different approaches. Twist in place to slip the panels over the lips of the L or T -tee support so it can rest forever. Just to open up the 3/8" or so on each end. I have not cut any panels yet. I planned (hopefully) unlikely no need for squaring or orienting of the grid, but it may end up screwing me in the long run if I don't know. I can see generally and its all pretty square perimeter and room. I just need to get them in now. Don't even know how big - I'd start by measuring a std. opening in the grid, and subtracting the size of a std panel, divide by 2, round down, and make any bias adjustments.
Every one of about 70 pieces of panel has to be trimmed one way, the other , or both. 2x3@21x28", 1x3@21x45", 2x9@24x34", 3x9@24x35", 2x3@21x48".
I have installed all the wall L -shaped from 10' sections, all main T -shaped sections from 12' or 8' sections, and all T -shaped from 4' sections, and now I'm ready to cut and install the actual panels. I have chosen Armstrong white 2' x 4' x 5/8" #916 Random Textured Fire Guard panels.
Since I had never done this before I may have done a couple things differently. I have already cut and have installed in place ALL hardware and NO panels, rather than possibly doing both at the same time as I went along. Secondly, instead of clicking the hardware between the standard 2' x 4' spacing I have either needed to cut all T -shaped 4' sections short because of the room size, or I have in one room cut them to three matching 3' lengths for a room 9' wide. So I do not have two blade type connection supports, one on each end. I have fashioned special ends - I didn't just cut them to length. I either have T -shaped 4' sections with one blade end support and one folded end connection support, or I have both ends folded
To make the folded support connections I cut the T -shaped 4' sections about 7/8" longer, and a height equal to either a main- T, or a height equal to the wall- L, using aviation snips to split and fold the sheet metal in both directions. Having never done this, I didn't just want a butt end cut square to length. Its all snug, I can place and orient each hardware, with panels in, for all time. It supports from the far edge, and I could probably install new- C light without supporting wires to anything other than the main T -spans I've done anyway. I can slide side to side, rotate and I guess I would have twisted if I needed to too to get the panels in with some coercing. I may even need to trim the folds with the snips if for more rotation. And I can remove or mis-align other hardware as I go, as long as I can get it back in. In the 3x9@24x35" room in the middle row; one end is locked with a blade and the other end of that piece is locked with the blade of another piece. All pieces in this room have one blade end and one folded end This is where just plain square cut to length ends may have been better. which brings me to my Q.
So now I have the entire grid built, and looking at the whole job I ask myself how do I get these panels in? I can almost "twist all the T- 's and just push panels up and in, without actually moving the T- grid". Or the 4 sides could move, or one on two sides, or swing it out form one corner, but since there are numerous panels I my get trapped. If I end up trapped can I just "twist all the T- 's and just push panels up and in, without actually moving the T- grid". IOW if I could use this method I could actually start in the middle, for example - I wouldn't. The immediate alternative is to start in a corner and cut each piece to match an opening and then start disassembling each 4-sided area in order, and be sure I always can, or get out of it, and possibly have to go back (all the way), and start again. I don't even want to start!! What/how do I do this? The directions don't tell me how to do this, he who knows please come forward, with spacing recommendations. TIA
-
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
It would be easy to tilt the panels as in the directions, but I haven't always got the recommended clearance, and I have a lot of obstructions and supporting wires to the main T -beams (at all joists 16" centers). I know they'll go eventually, just how do I approach it. The borg advertises a rate per tile or sq. ft. to install replacement tiles, and I could tell in minutes, if not seconds how one whos done this before would finish my job.
-
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Is the grid square? This all needed to me worked out before you ever started hanging grid. If the main field grid is not square, you may as well pull it all down, get new material, and start over. The border should be established before you hang grid, they would absorb any out of square conditions. The grid should be 2- 3 " below the joists, square, and flat. You needed to have all grid up, pop rivet one wall in each direction to maintain square and straight. Install border tiles first. When there is not much room above the grid, you will sometimes need to feed the tile from a easy hole. Tile is slid above the grid, usually sideways, and turned into the grid. Do not twist the grid to install tile, but it sounds like you don't have both ends of the cross tees snapped into the mains.
I really did not understand your questions, but it certainly sounds as if you needed a little more information before you started.
--
~~~~~~~~~~~~~~~~~~~~
DanG
A live Singing Valentine quartet,
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
I started, therefore its half done. Still I'm sure anyone who knows could lay it out for me in a time-tested plan to follow that works, because I'm not really sure what I'm in for until its all done
-
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Its like If a bunch of statements are made on the topic, one who is experienced will know which are definetely true and which ones are definetely false and which do apply and which don't, strongly or otherwise, and not only that, but they can possibly create the statements too. So far, I'm just getting through it, but it looks good, and a piece of cake, fun even.
-
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.