I'm curious about how to brace the hinge points in a Reduced Beam Flange Special Moment Frame with a wood diaphragm. I've seen a lot of steel angle braces back to the wood diaphragm, but it doesn't seem like the wood diaphragm will be able to resist the code required brace load (6% of beam...
I'm curious if anyone has read the new ACI318-08 Appendix D, Section D3.3.6? Am I understanding correctly that if the anchor material is brittle, then the anchor design strength is limited to 0.4 x concrete failure strength per D3.3.3?
Why is the brittle anchor design strength a function of...
Hi All,
I'm involved with a multi-unit housing retrofit project which includes dry rot repair for many of the architectural elements. I'm wondering if there are general specifications for dry rot repair that I can use as a starting point. I looked into Masterspec index and didn't see anything...
Does anyone have recommendations for weldable rebar coupler? I have used Lenton weldable mechanical coupler in the past. However, I just found out that they don't have a current ICC-ER report for IBC. Are there other options for weldable couplers?
I'm using the coupler to attach rebars to...
I'm currently designing a school building with Special Steel Moment Frames. The columns of MF run through the depth of a 30" deep mat slab and sits on a bearing pad below the mat slab. I used fixed condition at the base in the MF analysis to limit the drift. My question is, do I need to to...
Hi All,
I'm designing a mat foundation with a 5" topping slab. The topping slab is added so the architect can depress the finish elevation for walk-off mats and restroom tiles, and also coloring the topping slab w/o coloring the entire mat.
My question is: Should the topping slab be poured...
