(05-29-2017, 12:45 PM)Ewawoodman Wrote: Might this be the sort of thing that a crane should handle? I have seen them pluck a roof off a building, set it on the ground, and put it back once the new walls are done.
In fact, with the wall sections prefabbed and ready to go, it could probably be done in a day, 2 at most.
I sat down & designed a scissor lift last night. There will be a pair of X's made from structural grade 4 X 4's with a 1" grade 8 bolt serving as the pivot. Each 4X4 will have a pair of 1000# capacity wheels at the bottom to reduce friction instead of just dragging the ends across the concrete floor. The top of the 4X4's will also have a wheel (details not worked out) to go underneath the truss and means to capture the truss in such a way to keep it from slipping off.
I'll use 3/4-6 acme threaded rods & nuts at the bottom of both X's to pull the bottom together thus raising the top. There will also be cross bracing to tie the two X's together every which way imaginable. There will be pivot mounts for the screws to keep them from binding.
I'm currently removing the ceiling tiles under the roof along with the lights. I'll add a total of eight more 8ft 2 bulb florescent fixtures as part of the mod. I already have 24 8 footers plus some 4 foots in helpful locations. As my florescent bulbs burn out I plan to replace them with LED's. Needless to say I want my shop to have plenty of light. Found an on-line source that offers a case (25) 8ft LED's for around $220. IMHO that's a very good deal.
To decrease the weight I'll strip the shingles & paper off the roof before raising it and may also remove some of the sheeting as its being replaced with 3/4" T&G 4X8 sheets of OSB. Did that on my garage addition and it sure makes a difference.
I too am hoping I can get this to the dried in stage in a couple of days, 3 at the most. In any case I have very large tarps standing by.
Well no rest for the wicked.
Also need to take more pics.