In North America, CIPP installation is governed primarily by ASTM F1216 (inversion-installed CIPP) and ASTM F1743 (pulled-in-place CIPP), which set design, installation, and testing requirements the industry association NASSCO publishes companion guidelines for, and which most municipal specs reference directly. Because it doesn't require open-cut excavation, CIPP is the dominant method for rehabilitating sanitary sewer mains, especially under roads, in tight urban rights-of-way, or where reducing inflow and infiltration is the goal rather than a full pipe replacement. Bid quantities are typically measured by linear foot and diameter, with separate line items for point repairs, lateral reinstatement, and the bypass pumping needed to keep the sewer flowing while the work is underway. CIPP quantities, diameters, and the ASTM standards a spec calls out are usually spread across dozens of drawing sheets and a technical spec section — exactly the kind of scope detail Nonlinear extracts automatically when it reads a sewer rehabilitation bid package, rather than requiring an estimator to build the quantity takeoff sheet by sheet.
Knowledge Base
What is CIPP (cured-in-place pipe)?
CIPP is a trenchless method for rehabilitating a damaged pipe by inserting a resin-saturated liner into the existing pipe and curing it in place — usually with heat, UV light, or ambient cure — so it hardens into a new, jointless pipe inside the old one without digging up the ground above it.
