Hi Everyone,
I’m currently evaluating an existing concrete roof due to modifications made to the roof’s mechanical supporting structure.
I’ve outlined my thought process and questions in the sketch below. Feel free to share any comments or suggestions. Any help would be greatly appreciated.
I
Per Table 7-1, a ¾” diameter A325 bolt has a shear capacity of φ * rₙ = 17.9 k when the threads are included in the shear plane. Page 10-89 indicates that bolt shear must be checked with the assumed eccentricity shown in Table 10-9, where e is determined to be a/2 for a 2-bolt connection. Page...
Hi everyone,
Can you please advise on the following questions?
1. Per ACI 318-11, Section 12.15, the use of Class A splices is intended to encourage splicing locations away from areas of high tensile stress. Does this imply that Class B tension splices can be used anywhere, since they are...
I'm designing a solid concrete flood wall. I've looked through FEMA P-55 but still have questions on how to combine different flood load cases.
For one case, I think I need to combine hydrostatic + hydrodynamic + impact.
But how should I combine the loads when there is breaking wave? The...
Referring to Appendix B of the guide, why is the normal force Ne=T+4M/L? M produces a force couple and the forces are not in the same direction. Need help understanding this.
I have a situation where the roof column has no beam frames into it. The tip of the column is connected to diagonal bracing though. What k factor should I use? I'm thinking of using the horizontal stiffness of the bracing as a beam and calculating G. Does this make sense?
Per the first sentence of ASCE7-10 ch.13 - " This chapter established minimum design criteria for nonstructural components that are permanently attached to structures and for their supports and attachments. "
For illustration purposes, let's say we have a one-story steel-braced building with a...
Hi Everyone,
I have some questions regarding this previous discussion: https://www.eng-tips.com/viewthread.cfm?qid=401855.
Navigating the various references in the post, I tried to understand the crack pattern at the intersection between the retaining wall and the footing. Using plane stress...
