I am doing renovations to a commercial building from the 1920s. It is 1-story rectangle with a basement. the exterior walls are 8" unreinforced masonry. the floor joists are real 2xs embedded into the masonry wall. The issue I am having is the basement walls have no footings. They are built on a...
Hi, I am designing a concrete box that will be used as a bio-filter. What solid pressures have other engineers used? In addition, the box will hold water for at least some time. Should I include water pressure in my design?
Thanks
In an effort to keep up with the latest trends and possibly improve my firm's methods. I want to know how other structural engineering firms train new hires, particularly those fresh out of college. Do you have a designated engineer or manager work one on one with the new hire? Does training...
I have an elevated concrete slab, where a portion of the slab has a finished floor elevation that is 4' higher than the top of the slab elevation. Due to column locations, the easiest thing to do is the overbuild ontop of the structural slab. I have considered a few options, One option is...
I have a 14" conventionally reinforced concrete podium slab with a large amount of long term deflection in a middle span. I want to try and add a top mat to help reduce the creep. what percentage of steel e.g (1%) or layout e.g.(#6@12" O.C) is a good starting point for me to try?
I am designing a few steel beams to support wood party and interior bearing wall. I was wondering if It is cheaper/easier to install continuous steel beams or use simple span beams with shear connections only? The span are short so my beam sizes are the same, (they are all W14x22s.)
Thanks
I have a 4' long 24" deep by 10" wide concrete beam in a wall. There is a heavy point load from a steel beam above (250Kips) acting 8" away from the face of the support on the left side. The shear even with #5 stirrups does not work. Since the point load is less than a distance away from the...
I am a structural engineer, Usually at the beginning of a project we get a geotech report from the owner with the allowable soil bearing capacity we should use to design our footings. However I remember form school that one of the parameters for determining bearing capacity is the size of the...
I have submitted structural plans for permit for a 4 story townhouse project. The county reviewer came back and said per IBC 2308.11.1 "Structures of conventional light-frame construction and assigned to seismic category C shall not exceed two stories above grade plane". I am not sure how to...
I am designing a filtch beam and I need 3- 14" LVLs and 2- 3/8" steel plates. However I am having trouble coming up with a bolt pattern and spacing. the NDS does not have LVLs or anything more than 1/4" steel plates in their tables. Does anyone have any suggestions as to how to design the...
