Hi all, I’m designing the lateral resisting system for a house with virtually no available shearwalls on the lakeview side. Please see the attached sketch. This is in SDC D. It is a 2-story structure with a daylight basement. The architect already has concrete columns on the lower floor with...
Hello all, I'm designing a single family residential structure with a basement on potentially liquefiable soils. The geotech has recommended 4" diameter driven micro piles, and the use of battered piles for lateral resistance, but has also given a coefficient of friction to use for sliding...
Hi everyone. I’m working on a 3-story daylight basement residence in SDC D that is adjacent to a lake so the geotech has recommended 4”diameter pin piles down to depths of 60ft.
Typically, I design these basement walls as cantilever CIP walls with the toe of the footing extended out as needed...
Hi all, I’ve got a situation where there is an existing 12’ tall ecoblock wall about 2’ away from a daylight basement house. The wall was reinforced with geogrid which will now need to be cut away for the new structure. The Geotech is aware of this and is reinforcing the wall with piles and/or...
Hello all, the contractor on one of my projects had an issue with the concrete company and was only able to pour about a foot height of 3ksi concrete within 8" wide forms. The stems were to be anywhere from 18"-30" tall throughout the two-story wood framed residential house with 1'-4" x 0'-8"...
Hello Everyone. The contractor on several of my projects would like a typical detail for a situation where a drainage pipe exits the crawlspace of a new residence through the footing. These projects are typically 2-3 story light framed structures. The footings are typically 8" thick by 16"...
Hello everyone. The geotechnical engineer on a residential project that I’m working on suggested either pin piles or a mat foundation due to site conditions. The builder doesn’t want to use piles, so I’m designing my first mat foundation. I’ve never seen them on small light-framed wood...
Hi everyone, I’ve got a situation where I’m designing a three-story house in seismic category D, wind = 110 mph (ULT). The first level is a daylight basement with full height concrete basement walls at several sides where shown on the attached sketch. The front shearwalls on the lower level...
Hi everyone, first time posting to this site but have used it for years for guidance, so thank you! Anyways, I am in the process of gathering my MWFRS diaphragm loads and am looking for advice on how to model the parapet loads when there are multiple parapets along the length of the roof. The...
