Has anyone ever ran ice load combinations in both ASD and LRFD? I am analyzing an existing structure that had a pipe rack added to the roof. The original design had 30psf Lr where as now code only requires 20psf. The current loading has 11psf more DL due to the pipe and over 13psf more of ice...
For concrete with exposure type C2, the ACI dictates that larger concrete covers are used, higher strength concrete is specified along with a lower w/cm ratio. I am not seeing any recommendations on additional corrosion resistance for the reinforcement. If all these extra concrete...
I am using HDA-T anchors (4.9” embed roughly) and they are going into a concrete arched beam (16” wide, 3’+ deep). The ceiling is also concrete (integral with beam). Being conservative, I am using an edge distance of 5”, but I am pushing the capacities of these anchors above their limits doing...
ASCE 7-10 4.3.2 provisions for partitions
Exception: A partition live load is not required where the minimum specified live load exceeds 80psf.
For a second floor office if one were to use the office loading (50psf) the 15 psf load would need to be added. Where corridors are not defined and...
I have a hanging bridge crane that is connected to an existing concrete structure using expansion anchors. Holes were drilled for these anchors and many hit existing reinforcing before making the required depth. I have contacted a Hilti rep for guidance on this issue and they said that they...
Received an RFI asking if it is okay to have primer on joists that are to have studs. Concern is that the primer will be where the studs are shot through decking due to the joists being dipped and will interfere with stud connection. Is dipping the joists in primer acceptable?
I have a Building with multiple roof heights. The roof steps up twice in a relatively small distance. The middle roof height drift load can be easily calculated using ASCE-7. The middle height roof drift length comes to about 23' so 2' short of the entire length. So for the lower roof height...
