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HDPE pipe is a type of flexible plastic pipe used to transfer fluids and gases.It is often employed for replacing aging concrete or steel main pipelines.Constructed from the thermoplastic HDPE (high-density polyethylene), it has low permeability and robust molecular bonding, making it suitable for high-pressure pipelines.
Price (nominal) Reference Year Price (ref. year) Price (2023 Inflation) Project 1956–present $425 billion 2006 $425 billion $642 billion Interstate Highway System: 1992–2006 $14.6 billion [1] [2] 1982 $8.08 billion $25.5 billion Big Dig, Boston, Massachusetts: 2000–2022 $1.4 billion [3] 2022
50 Divisions refers to the 50 divisions of construction information, as defined by the Construction Specifications Institute (CSI)'s MasterFormat beginning in 2004 ...
The 16 Divisions of construction, as defined by the Construction Specifications Institute (CSI)'s MasterFormat, is the most widely used standard for organizing specifications and other written information for commercial and institutional building projects in the U.S. and Canada.
A culvert under the Vistula river levee and a street in Warsaw. Construction or installation at a culvert site generally results in disturbance of the site's soil, stream banks, or stream bed, and can result in the occurrence of unwanted problems such as scour holes or slumping of banks adjacent to the culvert structure. [2] [4]
HDPE is known for its high strength-to-density ratio. [4] The density of HDPE ranges from 930 to 970 kg/m 3. [5] Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength (38 MPa versus 21 MPa) than LDPE. [6]