Liquid retaining structures such as water treatment plants, wastewater treatment plants, reservoirs and various liquid containment vessels used in the municipal engineering field are often referred to as "municipal structures" or "sanitary engineering structures". Most often these structures are constructed of cast-in-place concrete. Such structures have very rigorous performance requirements with respect to water-tightness, durability and longevity. Successful design and construction of economical, functional, durable and trouble free municipal structures depend on specialized knowledge and experience.

Performance problems are commonly experienced in liquid retaining structures. The cause of such problems can often be traced back to inadequate design and / or poor construction practices. The cost of leakage repairs can frequently run into millions of dollars. When the involved parties cannot agree on the cause of the performance problems and / or cost sharing arrangements for repairs, arbitration, and sometimes litigation, often results.

Dullerud Associates Limited (DAL) is a company of professionals with long, highly specialized, experience in the design and construction of municipal structures. The Company also has special expertise in the design, analysis and construction of conveyance structures such as tunnels and pipelines.

DAL provides services to Owners, Operators, Consultants and Contractors who are involved with the design, construction, repair and/or rehabilitation of liquid retaining and other municipal structures. Our staff has special experience in failure analysis and forensic engineering.

DAL frequently provides Clients with expert advice and support in arbitration and litigation matters. A list of litigation cases supported by the firm is available upon request.