Just as a clarification. The under-reams are located under the grade beams, both the perimeter grade beam and the interior grade beams as well.
I haven't designed a residential slab in quite a while, but if I'm not mistaken, I believe a portion of the design of the grade beam was based on soil...
Thanks for the input. I will let him know the pros and cons and he can discuss with builder. I assume that he will get some type of warranty with the slab and he can base the decision on that as well.
The area is Southeast Texas, expansive clays. A friend is constructing a new residence and wants under reams placed under a conventional slab on grade foundation. The opinions around here are mixed as to whether to tie the slab and the piers together, to resist uplift as well as settlement, or...
Thanks for the input.
The fabricator got back to me and stated that the minimum weld used is 1/4 regardless of the details provided, or the shop drawing callout.
I knew we could get it worked out, I just did not look forward to marking up 250+/- shop drawings.
The client is not located...
Connection details on our design drawings show a 3/16 fillet weld, both sides, for a 3/8" gusset plate welded to the flanges of W shapes, say W10 x 45. Gusset plates are utilized for the connections of vertical bracing, welded to beam, bolted to bracing.
Although a 3/16 fillet is all that is...
JAE,
Thanks for the reply.
The word "lap" was incorrect and Item #4 describes the failure mode I was trying to describe. Items 1, 2, 3, and 5 are met.
The cone of failure is assumed to be at a 45 degree angle from the centerline of the bolt to where it intersects the centerline of the...
I have a situation where anchor bolts need to be developed by using the pedestal reinforcing steel. The height of the pedestal is restricted due to existing conditions and limits on overall foundation depth.
Lets say to fully develop a reinforcing bar in tension requires 30 inches. My...
