Engineering Insights
Perspectives on civil engineering, hillside construction, grading, and structural engineering in Los Angeles.
Altadena Fire Rebuild Drainage Plans Continue to Go Out
A bit of back and forth still with LA County with our creative solutions to getting Altadena Drainage plans approved. Plan check wanted some minor modifications which is fair enough to bring the plastic lined rain gardens 5 feet off the property lines.
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Altadena Drainage Plans Being Approved
Its been an experience, but we are finally getting the latest batch of Altadena drainage plans approved by LA County. Our technique is to keep the existing drainage pattern so we don't have to install stormwater sump pumps.
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Altadena Multi-Unit Fire Rebuild Drainage Plans
This is our first sideways lot in Altadena, with the entrance on the West side and the topography slopes North to South. The goal is to drain as much stormwater to the street as possible using gravity.
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Altadena Fire Rebuild Drainage Plans - Insurance Question
Going through plan checks and getting the current requirements back in a correction, one of the projects had their insurance ask what code LA County is using to require drainage plans on some lots, and not on others.
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Drainage Plans in Altadena Fire Rebuild
This Altadena Drainage Plan is a corner lot fire rebuild. The proposed house sits in a similar location but we need to adjust the existing contours to keep 5% slope 10 feet from the structure at the top.
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Altadena Grading Plan to Remove Pool
Next up in the Altadena fire rebuilds is a grading plan to remove a pool. This will be our first pool removal plan in Altadena. This particular lot is a large one and the County is requiring a grading plan to remove the pool.
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Altadena Drainage Plans with Lined Rain Garden
We have another longer lot Altadena Fire Rebuild Drainage Plan. This lot, the front yard doesn't slope as heavily as the previous ones we have seen, which allows more room to slightly regrade the contours.
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Drainage Design Models in Altadena
LA County wants us to show earthwork numbers for the difference between the existing and proposed soil. Showing the contours in a 3d orbit view always looks interesting and a quick way to tell if the model is looking good or not.
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