introduction TABLE OF CONTENTS concrete pipe Introduction................................................................................................. Defining Manholes.......................................................................................... Manhole Anatomy........................................................................................... Defining Catch Basins...................................................................................... Standard Specifications................................................................................... Regional Variations......................................................................................... Northern Alberta Products............................................................................... Catch Basin Material......................................................................... Manhole Material................................................................................ Prebenched Manholes....................................................................... PSX Direct Drive Gaskets................................................................ Large Diameter Manholes.................................................................. Regional Specification Highlights......................................................... Southern Alberta Products............................................................................... Catch Basin Material............................................................................ Manhole Material................................................................................ Prebenched Manholes....................................................................... Cast-a-Seal Gaskets............................................................................ 1-S Manholes.................................................................................... Check Valve Manholes....................................................................... Sampling Chambers........................................................................... Large Diameter Manholes.................................................................. Regional Specification Highlights........................................................ Manitoba, Saskatchewan, and Northern Ontario Products............................. Catch Basin Material............................................................................ Manhole Material................................................................................ Prebenched Manholes....................................................................... Large Diameter Manholes.................................................................. Regional Specification Highlights........................................................ Buoyancy of Manholes................................................................................... Manhole Barrels (w/Joints and Gaskets)......................................................... Manhole Openings........................................................................................... Maximum Allowable Openings....................................................................... T-Riser Manholes............................................................................................ Vertical Box Section MHs............................................................................ Big Box Manholes......................................................................................... Catch Basin and Manhole Material Handling..................................................... 2 2 4 6 8 9 10 10 15 16 17 18 19 20 20 22 24 25 26 29 29 30 31 32 32 34 36 38 40 41 42 43 44 46 48 52 55 stormwater treatment technologies box sections manhole and catch basin material