Is there a minimum temperature to bend rebar? We have a legit bar bending operation at our construction site so I am not worried about bend radius and the like as we have machines that govern all that. But there was a question thrown out if there was a minimum ambient temperature to perform the...
Gentlemen,
I have a design that specifies Grade 10.9 Anchor bolts which are very difficult to source here in the middle east. If you know of someone in the middle east that can supply them that would be very helpful. In lieu of that, my contractor can supply AISI 4340 grade bolts which appears...
ACI limits the temperature differencial between parts of conrete during the curing process. To monitor this thermal couplers are placed in the concrete during the pour. What brand names would you recommend for use. My company specifies the use of them, but not the best brand to use. Any input...
Is there a maximum spacing for crane rail clips? The 1989 version of the AISC ASD manual suggests a spacing of 3', but it is not a hard number. My clips are 9" long and I want to space them 4.5' on center. Strucuturally the crane rail is okay with the lateral loads applied, I am mostly curious...
Is there a maximum spacing for crane rail clips? The 1989 version of the AISC ASD manual suggests a spacing of 3', but it is not a hard number. My clips are 9" long and I want to space them 4.5' apart. Strucuturally the crane rail is okay with the lateral loads applied, I am mostly curious if...
How do I find the strength of my bolt if it is only partially threaded?
There is the general rule that a half inch bolt needs an half inch of thread to fully develop. I can't get a half inch, so what do I do?
AISC 13th edition (Black book) pages 16.2-21 states that short slotted holes can be used in both plys of a SC connection. it also states that a long-slotted hole can only be used in one ply of the SC connection. My question is, can I use a long-slotted hole in one ply and a short-slotted hole in...
It appears that most of the values in the UBC for drywall strength are based on anchoring to wood studs. I have metal studs in my building, do you know where I can find values for the shear and tension if I attach to metal instead of wood studs?
Thanks
I have an embedded plate in a wall that have studs extending to within 0.5 inches of the far side. What is the clear cover requirement for this distnace. ACI 349 B.8.3 sort of addresses it, but that is more for edge distances. Section 7.7 only covers for reiforcing. the plates are...
Somewhere in my math i am a factor of 10 off for my natural frequency for a beam. What is the equation for the natural frequency of a pinned-pinned beam. Thanks
I have a problem. I have an overhead crane that carries 25 tons and moves at 0.5mph. I am incharge of designing the protection so it won't accidently hit something really important. It is designed as basically a jail cell around the important item, what loads should I use when I am designing...
What is the ultimate strength of 60 ksi rebar? 60 ksi rebar is ASTM A706. For the life of me I can't seems to find the ultimate strength. I guess I am assuming that 60 ksi is the yield strength, which I think is a pretty safe assumption, but maybe not.
I have a floor system with steel beams 6 feet on center and a 12 inch concrete slab on top of them. The steel beems span about 20 feet so the slab acts like a one-way slab. In addition to live and dead loads, during construction I am going to have some pretty large point loads from small mobile...
I have a floor system with steel beams 6 feet on center and a 12 inch concrete slab on top of them. The steel beems span about 20 feet so the slab acts like a one-way slab. In addition to live and dead loads, during construction I am going to have some pretty large point loads from small mobile...
