Crane Rail & Hook Bolts
Crane Rail & Hook Bolts
(OP)
Hello,
Thank you in advance for you valuable time.
Pre-Engineered Building Design Engineer do not agree to use crane attachment detail proposed by crane vendor supplier, C- channel on top of crane runway I-Beam. Building design Engineer argument : we have installed many crane rails on I-Beam, top flange wider, without Chanel.
My questions:
1) What makes different with C-channel on top of I- beam and only I-beam as crane runway beam to set rail?
2) What should be division of responsible of Building Design Engineer and Crane supplier?
Thanks,
Thank you in advance for you valuable time.
Pre-Engineered Building Design Engineer do not agree to use crane attachment detail proposed by crane vendor supplier, C- channel on top of crane runway I-Beam. Building design Engineer argument : we have installed many crane rails on I-Beam, top flange wider, without Chanel.
My questions:
1) What makes different with C-channel on top of I- beam and only I-beam as crane runway beam to set rail?
2) What should be division of responsible of Building Design Engineer and Crane supplier?
Thanks,






RE: Crane Rail & Hook Bolts
In the past I have seen different divisions of responsibility. Sometimes the metal building manufacturer supplies the runway and sometimes the crane sub does.
RE: Crane Rail & Hook Bolts
You definitely can use the W section without capped channel if it can pass the design. For a quick check you can go to http://www.civilbay.com and download the crane beam design or crane girder design spreadsheet and run a quick check. The crane beam design spreadsheet can handle crane runway beam design with and without cap channel.
RE: Crane Rail & Hook Bolts
RE: Crane Rail & Hook Bolts
This is not what the OP is asking.
The crane supplier should not care at all what the runway girders are or if they have a cap channel or not.
The crane MIGHT have some concern with rail size, but it ends there.
If the building designer designs a girder where no cap is needed, thats it, it doesnt require it.
IMO, depending on crane size/capacity, j-bolts are not the way to go. J-bolts for certain runway girders and girders with caps have to be custom made and are only good for light duty cranes. You and the client are much better off using rail clips.
RE: Crane Rail & Hook Bolts
1) What makes different with C-channel on top of I- beam and only I-beam as crane runway beam to set rail?
The originator wants to know what makes the difference for crane runway beam to use cap channel or not to use cap channel. You can go to http://www.civilbay.com and download the crane beam design or crane girder design spreadsheet and run a quick check on the crane runway beam design. The AISC approach of designing crane beam assume the W section's top flange, or W section's top flange combined with cap channel take the lateral load and thus no torsional analysis is required.
With regard to the crane supplier and crane runway beam supply, it all depends on the contract. I have seen crane supplier submit vendor drawing with crane runway beam design, connection design numerous times in the past.
RE: Crane Rail & Hook Bolts
Any ref. materials for selection of attachment detail of rail to runwaybeam.
RE: Crane Rail & Hook Bolts