Thanks to everyone for the help. However, I got my "Ratings" to work for the timber deck-planks by using Allowable-Stress-Design instead of Load-Factor-Design. Never thought it would make that much of a difference, but such is life ....... well, at least in engineering :)
Thanks to everyone for the help. However, I got my "Ratings" to work for the timber deck-planks by using Allowable-Stress-Design instead of Load-Factor-Design. Never thought it would make that much of a difference, but such is life ....... well, at least in engineering :)
I have a multi-girder steel bridge with a timber-plank deck. There are nine steel girders (each a W12x50 with 8" flange width) spaced at 27" c/c (i.e., net out/out width of 18'). The deck is made up of 4" x 12" timber planks (spanning over and perpendicular to the girders). The intended...
I have a multi-girder steel bridge with a timber-plank deck. There are nine steel girders (each a W12x50 with 8" flange width) spaced at 27" c/c (i.e., net out/out width of 18'). The deck is made up of 4" x 12" timber planks (spanning over and perpendicular to the girders). The intended...
I am only designing the foundations for the structure, so all I wanted was some "rough" dead-weights for the roof trusses. The trusses will be 2-ft c/c spacing with 19 psf snow load and 20 psf wind-uplift. I am going to assume a dead weight of 1100 lbs/truss (includes bridging members). Roof...
Hi,
Was hoping someone could tell me what an 80-foot span wood roof truss might weigh? The truss is for a gable roof with a 4/12 pitch. Would appreciate any "ballpark" estimates or site-links. TIA
Hi,
Was wondering if anyone can tell me "ballpark" ASCE crane-rail section sizing for overhead cranes? Or is it really dependent on wheel loadings? Any site-links would be appreciated. TIA
Bridges normally are constructed with expansion joints along the deck (i.e., strip seal, compression seal, tooth dam). The sizing of the joints is generally based on thermal movement.
In turn, the deck is supported on beams which sit on bearings (normally classified as fixed or expansion)...
Was wondering if "weathering steel" (Gr.50W) is available in standard rolled wide-flange shapes? If so, can someone supply any information as to section availability? Any websites, links or company contact #'s would be appreciated.
Thanks in Advance (TIA)
Hmmmm, well ... I have a maximum service load of 21.6K (steel leg) sitting on this 6" floor ..... following ACI 318, Chap.22 (struct. "plain" concrete) with phi=0.65, fc=4000 psi, load factor of 1.4 ..... I get a minimum base plate req'mt of 8.5" x 8.5"; and the fiber reinf. does nothing to help...
Hoping someone can help me here. I'm trying to find some design standards/equations for allowable "Punching Shear" (i.e., two-way shear) on a 6-inch thick concrete floor that only has synthetic fiber reinforcement (uniformly dispersed). Normally, I would follow the provisions of ACI...
