San Mateo/Estero Municipal Improvement District Wastewater Treatment Plant Secondary Clarifiers Retrofit Design, City of San Mateo

After peforming the evaluation of the secondary clarifiers for the City, Beyaz & Patel provided design and specifications for the structural rehabilitation/ retrofit design. The work included site visit inspection; design for the filleted clarifier basin geometry; development of concrete repair for damaged and spalled concrete on walkway deck; design of new overlay to walkway design to protect the reinforcing steel; development of method to remove and replace two-inch grout topping on clarifier base; design of new mechanism center column anchor bolt attachment to clarifier slab; and design of new walkway guardrail system.

The modifications to accommodate a new mechanism center column included modifying and reconstructing the concrete raised pad and anchoring the adhesive anchor bolts 24-inches into the concrete pad.