He have been designing aluminum guards in water treatment plants using posts that are 1.9 Sch 80 Pipe at 4'-0". The aluminum is 6061-T6.
We reviewed the design loads and we noticed that these posts are overstressed. He have seen this design on other drawings and we are wondering how other...
We have a large beam with end plates attached at each end that is too short by about 1/2". What is a common solution to this type of problem?
We are concerned about the bending load on the bolts. We are thinking about installing longer high strength bolts (longer bolts to keep the threads out...
How do you determine if a pre-engineered column has enough bearing when doing a site inspection?
Pre-engineered buildings never have 100% bearing because there is no grout, but how much bearing should there be?
I recently did an inspection where there was only 25% bearing on a column but gaps...
We are doing a structural analysis of an existing fabric covered steel building (curved roof) and the original design calculations show a 85% reduction in the unbalanced snow load. We were wondering where in ASCE 7-05 this reduction is referenced.
I would like to determine if a fabric roof is slippery for a snow load calculation.
The following is a quote for ASCE-7 (C7-4 around page 317):
"It is difficult to define “slippery” in quantitative terms. For that
reason a list of roof surfaces that qualify as slippery and others
that do not...
When designing a new truss for a roof that will have solar panels on one side do you consider the roof as non-slippery on the solar panel side? (i.e. should the slope factor = 1 for lower sloped roofs?) The panels being proposed have a 3/8” high, rounded seal between the panels. I found an...
I’m looking for load table for Plexiglas. I would like to design a guardrail system with supports every 4’-0” with Plexiglas in between. The Plexiglas will be supported on two opposite edges. We have designed this type of system before with tempered glass using ASTM E 1300-94, but I am not...
I have a contractor that would like to place a galvanized column directly onto a pad footing below grade instead of bring a concrete pier above ground.
What is the easiest way to protect the galvanized column from the soil?
Is the galvanizing enough? Probably not.
Would any one know what is the factored weld resistance of a 1/4" fillet weld between stainless Grade 304 material? Where would be a resource I could look this up? What electrode classification number is generally used?
Question: Can you use non-compact sections in a moment connection?
I am designing a moment connection in a steel moment frame. The column is a HSS6x6x3/16 with a W8x28 beam cantilevering over the top. The connection will be an end plate on top of the HSS connecting to the beam flange.
I am...
