TTEK vs SSD Comparison

Tetra Tech Inc provides consulting and engineering services for environmental, infrastructure, resource management, energy, and international development markets. It specializes in providing water-related services for public and private clients. It designs infrastructure, facilities, and other structures with complex plans and resource management. it has two reportable segments. Its Government Services Group (GSG) segment includes activities with U.S. government clients (federal, state and local) and activities with development agencies world-wide. Commercial/International Services Group (CIG) segment, which derives maximum revenue, includes activities with U.S. commercial clients and international clients other than development agencies.

Simpson Manufacturing Co Inc designs, manufactures, and markets systems and products to make buildings and structures safe and secure. It produces wood construction products, including connectors, truss plates, fastening systems, fasteners, and shearwalls, as well as concrete construction products such as adhesives, specialty chemicals, mechanical anchors, powder actuated tools, and fiber reinforcing materials. The company serves residential, industrial, commercial, and infrastructure construction, remodeling, and do-it-yourself markets, operating exclusively in the building products industry. It has three regional segments: North America, Europe, and Asia/Pacific. The majority of its revenue comes from wood products.