Resources

Guides for choosing storm drain pipe in Houston and for reading SDR, DR and C900 ratings.

• HDPE vs PVC vs RCP: Choosing Storm Drain Pipe in Houston

  When to use HDPE, PVC, polypropylene or reinforced concrete pipe for storm drains and culverts in Houston, with the City of Houston rules for each one.

• Pipe Spec Quick Reference: SDR, DR and C900 Ratings

  Quick reference for SDR 26 vs SDR 35 sewer pipe, C900 DR18 vs DR14 pressure ratings, SDR 35 vs Schedule 40 and HDPE DR, with sources for every number.