I am looking at a slab from a ~20 year old project. A concrete slab has specified "AQ-131 WWF".
Does anyone know this standard? I would like to compare wire size and spacing.
Thanks
Columns support an exterior canopy adjacent to building. A 4 inch slab on grade will be poured around the columns, but the top of slab will be 22 inches above top of footings.
That makes a massive turn down, might require formwork, and needs about 12 cy of extra concrete over the entire...
After exhausting all options, I am stuck placing steel column base plates below grade, directly on the footings.
My question is: What is the best method of protection?
I have previous, similar designs to my current project, as well as the more experienced designers in the office, and the best...
SacreBleu
PCA notes are a helpful reference for concrete design, but I'm not sure if they address hairpins.
I consider hairpins a matter of "good engineering practice" for continuity of force transfer, not needing a design calc. Adequate development of slab edge reinforcement and/or grade...
Does anyone have member dimensions/details for ISO shipping containers? (CAD would be better) I know overall dimensions but material properties and member dimensions/thicknesses are hard to find. Thanks
PCA notes on ACI 318 are helpful but I've found mistakes in the sample calcs in the past.
Foundation design basics: 1) determine geometry (done), 2) assess allowable soil bearing or get from a geotech, this will determine your system. 3) determine initial column support dimensions on gravity...
Does anyone have member dimensions/details for ISO shipping containers? (CAD would be better) I know overall dimensions but material properties and member dimensions/thicknesses are hard to find. Thanks
The "envelopes" are worst case load combinations on one diagram, so + and - values and max/min locations are shown for V & M. I understand that they need uplift values to design members and bridging, and that with this value, again presumably unfactored, they can plug into their black box to...
With the help of a senior engineer, I designed a large open bay steel warehouse building, 105' wide by 400' long by 45' high, and used steel joists and girders for framing. The joists are 105' long, 8' deep, moment resisting and have restrained top and bottom chords. Standard joist tables are...
