Lower Colorado River Authority Dalchau Service Center Office Building

The Dalchau Service Center Engineering Office Building was constructed for the Lower Colorado River Authority (LCRA) to house various engineering departments. The building is a LEED-certified, three-story structure that provides Class A office space and multiple conference rooms with integrated A/V systems. It includes energy-efficient elements such as an insulated tiltwall envelope, LED parking lot lighting, and a high-efficiency HVAC system with magnetic drive chillers. Rainwater collection and HVAC condensate recycling were incorporated for use in landscape irrigation.

Energy and water consumption was a key focus for the project. Tiltwall concrete sandwich panels with integrated insulation provided efficient structural and insulating properties at a competitive price. High-performance glazing, overhangs, and louvered sunshades combine to block excess glare and heat from entering the building. To reduce the heat island effect around the building, 100% of impervious surfaces have been constructed with high-albedo materials. A computer model estimated the building would save 20% in energy cost over the industry baseline, and the owner has noted the results. Looking at data from the first eight months, energy use was 40% less than their other comparable offices.

“I’ve worked with many general contractors on large commercial projects in the course of my career and I can state without a doubt that the ACI team is one of the best. I appreciated their hard work and dedication. They don’t have a weak link anywhere in their organization.”


Brian Saari, Former Senior Project Manager

Owner Lower Colorado River Authority (LCRA)
Architect STG Design, Inc.
Engineers Datum Engineers, Inc.
Type Municipal Projects
Square Footage 78,952 square feet
Location Austin, Texas
  • ABC Central Texas Excellence in Construction Eagle Award