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CBC section 2407.1.1 calls for factor of safety 4 to be used for all glass handrail support members. We are already using 200 # point load or 50 # /ft load for designing the support members. Is it not FS is already built in these loads.

I have a decorative handrail post 42" high , 4 ft spacing connected to 2-2x4 members at the base. The connection is made thru 2 threaded bolts embeded in the post and lag in the base members. With the moment of 8400 # in and lag screw spacing only 2" it is difficult to use lag screws. Any...

What is the design criteria for designing a high rise window cleaning davit post.

I am looking for construction company specialist in precast arch bridge. I have the one name Con Tech. Any other names in Southern CA ? Thanks

I am checking the design of a 3/4" glass panel. If any one has bending, shear values and E for glass please let me know. One reference is ASTM E-1300. I do not have it. Thanks

Does any one knows the link or free software wher I can find the location of nearby faults from my site. I have UBC old fault map book but it does not give exact distance.

Where in the code it specifies to increase or decrease the stresses in masonry walls due to special inspection. Thanks

What will be the appropriate surcharge load in PSF for H20 truck load for the design of retaining wall.

I designed a retaining wall with #7 bars vertical , but contractor used # 5 bars. The bottom of wall (about 16") is over stressed. Instead of demolishing the wall, I was thinking of adding 2 courses of 8" blocks at the base making the wall 16" at the base and vertical dowel into the footing and...

When designing steel stair stringer, I always consider stringer compression flange unbraced, since light Gage tread will not brace the compression flange like a slab or other diaphragm. The stair manufacturer wants me to design assuming compression flange is fully braced. Any opinion?

Are any Live Load requirements in the code regarding the dead load or live load for the free standing storage rack in the warehouse? My client has couple of racks for storing very light computer parts and the city has asked him to provide seismic anchorage.

I am designing steel stairs. What code equation will be the right to anchor the stair to main resisting system.Is there is a minimum lateral force that can be used to anchor the stairs?

The retaining wall is designed with 2000 psi grout strength at 28 days. The contractor wants to back fill in 7 days. I know the grout will gain about 70% strength in 7 days,should I allow back filling in 7 days or increase the grout strength.

Home owner has removed few vertical and diagonal members in an existing wood truss. Of course the wood truss is sagging and they want to repair it. I am recommending to jack up the truss and bring it to level point, add those missing members. Do you thing adding 3/8" plywood sheathing on each...