Hello,
I am looking for opinions on the need for an expansion joint in a building in the early design stages, there's a quick sketch attached. It is 7-stories, load bearing cold formed stud walls supporting concrete on metal deck with composite joists. Ordinary concrete shear walls are...
I am reviewing my company's slab fold details for unbonded post-tensioned elevated slabs, and in doing document research I haven't found much of a consensus on how slab folds should be treated. I attached a clip from a magazine article that gives the kind of information I've been seeing, which...
I've got a project in construction, a concrete podium supporting five levels of timber above. 16" thick flat plate concrete podium, about 190'x60' in plan. The contractor pulled the tendons and basically every one came up to pressure and was under the design elongation, only a handful (out of...
I'm looking at an existing concrete structure, the owner is interested in adding some additional floors. The original structure dates to the late 60's.
-The columns are reinforced with #11 vertical bars and #3 ties, which was OK under ACI 318-63.
-Current ACI code requires #11 vertical...
