The newest technical doc from the Municipal Advisory Board (MAB) particulars the required wall thickness for a high-density polyethylene (HDPE) water major pipeline that’s topic to the fault crossing seismic hazard. The 38-page MAB-10 2025, Design of HDPE Water Mains for Crossing Seismic Hazard, contains formulation, calculations and charts plus details about pipeline response to strike-slip occasions. It companions with the beforehand revealed MAB-9, Design of HDPE Water Mains for the Lateral Unfold Seismic Hazard. Each can be found at no cost on the group’s web site: www.plasticpipe.orb/MABpubs
“As requested by a number of house owners and consultants, the Municipal Advisory Board developed this doc to help within the design of HDPE for the anticipated fault crossing seismic occasion,” acknowledged Camille George Rubeiz, P.E., F. ASCE, co-chair, HDPE Municipal Advisory Board, and vice chairman for the Plastics Pipe Institute’s (PPI) Municipal & Industrial Division. The MAB serves as an impartial, non-commercial adviser to the Municipal & Industrial Division of PPI, the main North American commerce affiliation representing the plastic pipe trade.
“In MAB-10 2025, easy relations are developed for the required wall thickness for an HDPE water major topic to the fault crossing seismic hazard,” he continued.
“The 2 main seismic hazards to buried pipelines are wave propagation (WP) and everlasting floor deformation (PGD). For the fault crossing hazard as described in MAB-10, the required wall thickness is a operate of website circumstances – burial depth and soil unit weight -, the appropriate pipe pressure, and geometric traits of the hazard, particularly the quantity of fault offset and the pipeline’s fault crossing angle.”
Warmth-fused HDPE pipe sections create a leak-free joint and a monolithic pipeline. The ductility and adaptability of HDPE pipe present excessive resistance to earthquakes and can be an essential issue for ease of set up. The HDPE pipe additionally resists corrosion and isn’t topic to tuberculation, essential for sustaining and maximizing water circulation capability. HDPE pipe could be put in utilizing a wide range of trenchless and open lower strategies.
The MAB-10 volunteer activity power consisted of a number of engineers, utility professionals, trade consultants, and contractors. The mission was led by Michael O’Rourke, Professor Emeritus Civil Engineering, Rensselaer Polytechnic Institute. MAB-10 plus different paperwork could be discovered at www.plasticpipe.org/MABpub.