Per my reference the allowable shear load for a grade 5 bolts is 0.4/sqrt(3)*Fu*Root area. I am designing to an ultimate loading condition (blast loading). I understand the safety factor to be 2.5 (aka 1/0.4). Is this correct, and if so where does the sqrt 3 factor represent. Thanks in advance.
If a horseshoe shim is used between a base plate and slab (assume no grout) is the threaded rod subjected to shear, tension and moment; tension and shear, or something in between (if so is it quantifable). Any help or references would be a great help. Thanks
With the 1/3 stress increase being phased out, I began to wonder exactly why it came about. So far the research I have done still has not given a definative answer on how the stress increase came about. Doe anyone know the history of the 1/3 stress increase or a good reference on the topic...
A wind tunnel study was done for a high rise condominum complex in Philadelphia, PA. The wind tunnel study was done by a Candian firm. The Candian Building Code requires the wind tunnel study to include an addtional 2 psf for mechanical effects and 4psf/100m of building height for stack effect...
Is it possible to embed Aluminum in concrete without spalling the concrete? Do all Aluminum alloy react the same? Does anyone know of a good reference? I have not been able to find much on this topic.
How are wind cladding loads combined? For example a corner of a building, how are the wind cladding loads combined, for design the corner support?
To the best of my knowledge the ASCE 7 code does not address cladding load combination, it applies orthoginal loads seperately. I see the corner...
What alloy is typically used in A449 bolts? I would like to specify a smooth rod of equivalent properties. The smooth rod would be 5/8" diameter. Thank you.
Does SAE J429 specify a material properties and bolt properties or just bolt properties. (i.e. can I purchase a non threaded SAE J429 rod or would it be a ASTM AXXX steel) I seem to get conflicting responses from coworkers. Any help would be appreciated.
I am trying to reinforce an aluminum member with steel to control deflection. I do not have enough room to add enough steel to meet the deflection criteria. Does anyone now of a higher modulus material that is readily available in barstock? I have looked into tungsten wihout much luck. Thanks...
Does anyone know of a good stainless steel extrusion reference? Also I would like to know what the industry standard tolernaces are, or where to find them? Thanks
Does anyone know of a good stainless steel extrusion reference? Also I would like to know what the industry standard tolernaces are, or where to find them? Thanks
I current have a 1/2" diamter stainless steel pipe that transitions to a 1/4" diameter steel pipe via a compression fitting. When flowing at steady state the connection emits a low frequecy hum and causes gases to come out of solution. the operating pressure is approximately 20 psi. I have not...
Does any one know of a through welding symbol reference? I would like to know what the differnt finish symbols represent. I have been refered to AWS A2.4.
I am trying to analyse a wide flange section with web stiffners to verify that it will be able to accept a torsional load. The W14X30 currently has 1/4" plate each side at 48" o.c. AISC Steel design guide 9 "Torsional Analysis of Structural Steel Members" does not address this situation. Does...
Does A36 connected to Stainless Steel require seperation? Also does Stainless Steel connected to Aluminum 6061-T6 need sperations? The galvanic diffence for both connections is not great, but I do not know what an acceptable difference would be?
Does anyone know of a non-destrucitve means of determining the thickness of a concrete slab? So far the only means if have found is Ground Penerating Radar (GPR). Is GPR difficult to used and/or interpret? Thanks
I need to embed a 1/2" dia. 6061 aluminum alloy threaded rod in an exist concrete slab. The aluminum is necessary due to high intensity RF fields. The appliedloads are small, the bolts are mainly for maintaining a position. Does anyone know of a epoxy that is used and/or certified for this...
