Andrews.engineer is a consulting engineering firm specialized in Infrastructure Management and environmental engineering. The firm has recognized expertise in the assessment and management of Large Diameter Trunk Sanitary Sewers. These trunks are typically 1200 to 3000 mm in diameter with high depths of flow and often high velocities with little or no opportunity for de-watering or diversion. Over the years we have developed a wide range of techniques and safety protocols for working with the challenges presented in the trunk sewer environment. Learn more by visiting us on our website: http://www.andrews.engineer/