Vista Water Tank


CLIENT

Town of Hillsborough, CA

SERVICE TYPE

  • Building & Safety
  • Civil & Structural Design
  • Construction Management & Inspection

CSG managed the planning and the initial design of this project which replaces two existing tanks and an existing pump station on a small site. CSG managed a team that included five subconsultants (Geotechnical, Pump Station, Electrical, Landscaping and Arborist ); coordinated with the tank design/builder; and prepared bid plans, specifications and cost estimate for the General, Civil, Architectural, and Structural disciplines.


The existing 350,000 gallon steel tank and existing abandoned wood tank were replaced with a 580,000-gallon pre-stressed concrete tank. The existing pump station with two pumps was replaced with two pumps of a capacity close to existing in a larger up-to-date structure. The tree covered site was completely cleared of nearly all the trees and all improvements, and was graded to accommodate the much larger tank footprint. A significant design challenge included laying out the new facilities and underground piping on the small site.


CSG also prepared architectural and structural plans and specifications for the 22’ x 23’ 2-room new pump station as well as the site retaining walls. The pump station structure is a concrete masonry unit (CMU) with a wood roof covered by metal seam panels. The largest wall is a soldier pile and lagging wall, approximately 70 feet long and as high as 6 feet.

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