150 50 ton overhead crane structure

huangyhg

150 / 50 ton overhead crane structure
1st - a 150 / 50 ton overhead crane structure is dynamically loaded while in motion correct? if so, shouldn't the structure always be classified as dynamic, from the begining of design, fabrication, and erection?
2nd - as a follow up inspector for the sub-contractor i've found discrepancies from the sub's draftsman/detailer (ie... hole spacing for various structual connections, all over the structure. strut beam to column connections hole spacing(4 1/4" gage at column flange, 4 3/8" gage at strut beam connection clips/lugs: wrong size angle for bracing as per contract drawings, angle toed up instead of down: top cord angle bracing gusset/connection plates erected underneath the top flange of the trusses, as well as bad weldsand lack of welds : bottom cord bracing and strut beams erected with the wrong size a325 bolts.
3rd - to make the structual members fit, the erectors thermally oversized the holes with an oxy-fuel torch, very poor workmanship!
4th - several columns extremely out of plumb, span out of tolerance according to cmaa, as well as straightness of girders.
5th - i'm at a loss, the whole structure has been erected with these problems, can it be repaired or should it be condemned?
what authority do you have as a "follow up inspector"?  the installation should be rejected as noncompliant and let the chips fall where they may.  the situation is serious and cannot be allowed to stand unchallenged.  a 150 ton overhead crane is not a toy.  failure could have disastrous consequences.
your post states that you are a follow up inspector for a sub-contractor.  is there an inspector representing the owner? this sounds very serious and also sounds like a pre-engineered building without a tight spec and contract or a structural engineer of record.  the details of a building with a crane cannot be taken lightly.  notify the structural engineer of record (if there is one) and the owner of your findings.  150 ton cranes are not cheap and neither are the spare parts.  the fourth item in your post will wear out wheels, bearings and rails very quickly and frequently.
this can be repaired but it will take some work.