The Silver Lake Headworks Reservoir Project for Los Angeles Water and Power was built in two phases. The two reservoirs are 562 ft by 630 ft by 34 ft tall, with heavily reinforced slabs and walls from 30 inches to 48 inches thick. The first phase experienced significant cracking. The second phase design, 2015-17, was subjected to a rigorous review that included mass concrete thermal analysis and thermal and shrinkage crack computer simulations intended to minimize crack repairs required to meet the leak rate criteria for the reservoir. GES Tech Group was retained to provide the non-linear concrete material property based thermal and mechanical modeling for the phase two walls, base slab and roof pours.
