This document is the 501 Water Quality Unit WQU 20ft Detail. It shows details for the unit with dimensions chart.

The unit detail shows the dimensions, HDPE access risers, match top stub invert to top chamber invert, sediment chamber, HDPE stand pipe, reducing plates, saw tooth HDPE weir plate, match outlet stub invert with orifice invert, outlet orifice and HDPE inverted weir plate.

A chart is provided with model numbers, main pipe diameters, treatment flow rate, sieve size, inlet stub diameter, outlet stub diameter, orifice diameter and A/B/C/D dimensions.

Notes state that all dimensions are nominal and all fitting connections will be made using a standard Bell/Bell or split coupler.

The unit illustrations shows the saw tooth detail, saw tooth HDPE weir plate in sediment chamber, HDPE inverted weir plate for oil chamber, the stand pipe, reducing plate, welded stiffener plate and dispersion baffle detail.