I am looking for the manufacturer of the following concrete coil inserts: PAI-15 and FCL-5.
They were specified for concrete covers, which were constructed back in the mid to late 1970's. I have contacted various manufacturers but have had no luck. Does anybody recognize these inserts? Thanks.
I am designing a 30' ladder (approx) that will not have any intermediate supports along its height. Is there a rule of thumb regarding the required stiffness of the ladder side rails to satisfy serviceability requirements (i.e. ladder does not shake or sway excessively to cause discomfort to the...
Attached is a sketch that shows a small W-section connected to a larger W-section by fillet welds at the flange tips. The smaller beam is relatively short and transfers a tension load to the larger beam. The welds are the only connections between the beams (i.e. no bolts, end plates, etc.). The...
Can anyone see any issues with calculating the thread capacity of a anchor bolt nut that is not fully engaged and comparing it to the applied load to determine if it is acceptable?
The anchors are 1" diameter Red Head anchors and are oversized for the loads they will see (approximately a 3:1...
I'm analyzing some trapeze hanger supports for a 72" diameter duct and I'm not sure about the load distribution from the ducting to the hangers.
The hangers are semi-circular straps, unreinforced, attached to 3/8" hanger rods while the ducting is 12 ga. thick.
Would the duct self-weight be...
I'm performing a design check on temporary staging used to repair concrete on an existing structure. The staging consists of a 8' wide floor and a 16' high outside wall and encircles the existing 150' diameter structure. The staging is not covered (i.e. no roof). The floor and the wall are...
Can anybody tell me how I would determine the "K" value for a post fixed at it's base and laterally supported at midheight? The axial load is applied at the top of the post.
