Pipeline

Northeast Water Purification Plant Expansion

Northeast Water Purification Plant Expansion Houston, Texas DCCM partnered with the Houston Waterworks Team to perform a progressive design-build project to expand the existing City of Houston Northeast Water Purification Plant from 80 million gallons per day to 400 million gallons per day treatment capacity. DCCM was responsible for the structural and mechanical design of the new raw water intake pump station, located 1,000 feet offshore in the middle of Lake Houston. It has an access bridge and pump station platform with ten 1,000-horsepower vertical turbine pumps capable of delivering up to 560 million gallons per day (ultimate capacity) of raw water from Lake Houston to the Northeast Water Purification Plant. DCCM performed structural design modeling and simulation of a 30,000-square-foot pump station platform that supported the pump facility building, pump equipment, piping and electrical switchgears, and process mechanical design to install ten 1,000-horsepower vertical turbine pumps with two 96-inch header pipes, control valves, and a 25-ton bridge crane. The intake pump station platform is 13 feet above normal water level and 250 feet long by 120 feet wide, supported on a cast-in-place 1-foot-thick concrete deck with 3.5-foot-deep grade beams. DCCM designed and analyzed the intake pump station using the finite element program Structural Analysis and Designing Program. Dynamic analyses were also performed to verify the platform’s dynamic behavior under pump dynamic loads during operation. Bentley 3D models were used in the final design by structural, architectural, process mechanical, piping, plumbing, instrumentation, and electrical design disciplines. All design models were integrated to detect conflicts and complete the final product. At a Glance 400 million Gallons per Day $165 million Construction Cost Markets Municipal Services Water & Wastewater Utilities

US 290-IH 610 Interchange Gas Relocation

US 290/IH 610 Interchange Gas Relocation Houston, Texas TxDOT is widening and reconstructing the 25-mile US 290 Corridor at an estimated cost of $4.7 billion to accommodate growth on the west and northwestern sides of Houston. The project is being completed within 13 segments, the widening includes five/six general purpose lanes in each direction from IH 610 to just west of SH 6, four general-purpose lanes in each direction from just west of SH 6 near to the proposed SH 99 (Grand Parkway), three general-purpose lanes in each direction from nearby proposed SH 99 (Grand Parkway) to the end of project, and two to three lane frontage roads in each direction throughout the corridor. DCCM was selected to install over 4 miles of polyethylene and steel pipes. The main pipe diameters ranged from 2 to 12 inches for intermediate-pressure (IP) and high-pressure (HP) lines. Designs for open cut and horizontal directional drill (HDD) methods were used, in accordance with our client’s policies and guidelines, as well as state and municipal requirements.  This project will extend the IH 10 West and IH 610 reconstruction, where DCCM provided complete utility services. We support communities by providing utility designs to deliver much-needed infrastructure relief, aiming to reduce delays and injuries for the 250,000 vehicles that travel through this intersection daily.  At a Glance 4 Miles Polyethylene and Steel Pipes $4.7B Overall Construction Cost Markets Power Services Utilities

Neighborhood Replacement Program

Neighborhood Replacement Program Various Locations, Texas DCCM provided engineering services for replacing pre-84 distribution system pipelines for a confidential client. All low-pressure and intermediate-pressure pipelines made of ductile iron or steel were replaced with IP high-density polyethylene pipelines. Replacement of pipelines was part of the natural gas distribution Integrity Management Program as established in Texas Administrative Code, Title 16, Part 1, Rule 8.209. DCCM has currently designed over 16 miles of pipeline replacements in multiple areas throughout the cities of Mart, Hillsboro, and Waco. Services for this project included permit coordination with TxDOT and the cities of Mart, Hillsboro, and Waco; plan views of proposed gas mains; replacement of residential service lines; placement of proposed valves and mainline fittings; design of connection details; estimating project quantities; and retirement of regulator stations. All designs were completed in accordance with the client’s standards and specifications, as well as with federal, state, and municipal requirements. At a Glance 16 Miles of Pipeline Replacement Confidential Project Cost Markets Power Services Utilities

30-Inch Pipeline Replacement

30-Inch Pipeline Replacement Jefferson and Port Arthur, Texas DCCM replaced 8,000 linear feet of 30-inch natural gas pipeline in Jefferson County. Two 4,000 linear foot horizontal directional drills were used to relocate the proposed pipeline through the wetland and under three drainage canals. Close coordination took place with the U.S. Army Corps of Engineers and Jefferson County Drainage District No. 7 to minimize disturbance to the existing wetland and canals. DCCM provided engineered plan and profile drawings, topographical surveys, line verification, metes-and-bounds descriptions for new easements, construction staking, as-built surveys, and as-built plans. At a Glance 8,000 Linear Feet 30-inch Natural Gas Pipeline $203,671 Project Cost Markets Power Services Utilities

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