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Coating Sheet Piling We are designing cofferdam sheeting that will extend through a continuous layer of peat and terminate a minimum of 2 ft. in hard clay. The sheeting is not in a body of water but will be used to construct an access road to a new sewer line through a marsh area. The geotech...

KootK Thanks for the info but unfortunately I am not a member of AISC>

I am designing fillet welds for a moment connection of two HSS tubes made with 316 stainless. I want to use AISC Table 8-4 for the weld group but I am not familiar with weld strengths in stainless and not sure what electrode to choose from Table 8-3 to arrive at the C1 coefficient. Can anyone...

CANPRO, what reference manual would do you think will address my conditions, without downloading all of them. Thanks for the direction!

Can someone help me with the design of a welded connection for a short stub beam to the main beam. This will be a moment connection since the short stub beam ( about 12" long) will support an equipment hanger load. The main beam HSS 14 x 6 x 1/2" has been sized for torsion created by the...

If a steel beam is setting in the sun when the ambient temperature may be 90 deg. F, could the steel have an actual internal temperature that is a much higher temperature, say 120 deg.? I believe I read this somewhere but for the life a me I can't remember where.

KootK, I have looked at Blodgett's text. I have a first printing that I purchased while in college and thought I may try use one of his examples for moment at the base of a column if I couldn't find anything closer to my situation. Back then he had nothing covering HSS sections. Thanks

I would like to clarify my description of original question regarding the design of support for torsion of the HSS section. The HSS is a simply supported beam, no moment about the major axis at the supports. There is torsion (16 ft.-k)about the longitudinal Z-axis which must be resisted. The...

I have a 14 x 4 x 3/8 HSS beam that carries torsion to the end supports and I have been unable to find an example for the design. I am thinking of a stiffener plate on each side of the section welded to the bearing plate and face of the tube with the overturning forces (couple) taken into the...

I am looking into the availability of 14 x 4 x 1/2 sections in stainless steel for the purpose of corrosion resistance, since these members will be spanning above open tanks of water in a treatment plant. Another possibility could be a weathering steel sections but again I don't know if this is...

There will be 18 spring isolators (9 on each side) with two 5/8" diam anchors bolts on each per the Caterpillar drawings.

I am designing a generator pad on ground with an allowable soil bearing of 1500 to 2000 psf. The mat will be 52 ft X 16 ft. The genset operating weight including the enclosure and ancillary equipment will be about 138 kips. My question is what is the rule of thumb for the mass of the pad vs the...

If you have any experience with this Subject please read on. I am reviewing calculations for the design of a temporary crane tower foundation. In the initial review I asked for the breakdown of the loads (DL,LL,W,ect) from the crane manufacturer. With this info I thought the foundation designer...

Thanks JedClampett I guess I will have to get field dimensions in order to answer questions in sji. I was hoping someone would have an old load table since have the size callout on the original drawings.

I am trying to evaluate floor loading on 1986 building construction. The framing plan called for open web steel bar joists, size SJ16 by US Gypsum. I don't have these tables by USG in my office. Can anyone help me locate a copy? I spent several hours on the net and gave up! Thanks for any help

I am removing some concrete walls from a tank in a waste water plant for modifications. When the walls are demolished down to the base slab I am going to require that the vetical dowel bars ( #4 or #5) be cut just above the base slab and then ground flush with the surface. My question is: can...

I do tank designs and water tight testing for our structures on all of our water and waste water projects. I highly suggest using as a guide,"Tightness Testing of Environmental Engineering Concrete Structures" ACI 350.1-01. By the way, this guide suggests that the unlined tank be filled for 3...

I asked this question in October of last year with no responses to date. Perhaps some older or retired structural engineers could help me. I have to determine the load capacity of p/c roof slabs for a building. The old plans do not indicate the design loads that were required but I recognized...

I am used to this problem with wood trusses. The truss designer will tell the owner or the EOR where he needs bracing of his members per his design and indicate same on the submittal drawings. However the truss designer is not responsible for the permanent bracing of anything else. He doesn't...

The truss will weight about 6.9 lb./ft or 3.5psf @ 24" centers. I got this out of tables in "Wood Engineering and Construction" 3 rd Ed. Faherty and williamson.