Engineer's Package
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Don't be in the dark, use HDPE literature, notes, references and specifications.

PE Handbook
WRF Earthquake Report
Alliance Operator Qualifications
Alliance Insider's Guide
Alliance Decision Trees
Alliance Pipe Chart
Model Specifications
HDPE Standard Details
PPI MAB Contacts
PPI MAB EF 1 - < 12"
PPI MAB EF 2 - > 14"
PPI MAB Repair
PPI 44 - Long Term Resistance
PPI 49 - Service Tubes
PPI 54 - Squeeze Off
PPI Transitions