This document is the Nyloplast 3’ x 3’ Road and Highway Structure. 2 details with nyloplast illustrations shown.

The Nyloplast 3’ x 3’ Road and Highway Structure shows the 3’ x 3’ ductile iron frame and grate to match basin, 18” minimum width & 8” thickness guidelines, minimum pipe burial depth, variable invert heights, adapter angles variable, traffic loads, variable sump depths, watertight joint and various types of inlet/outlet adapters.

Note 1 states that frames and grate shall be ductile iron. Note 2 drain basin to be custom manufactured. Note 3 states that drainage connection stub joint tightness shall conform to ASTM D3212. Note 4 states that adapters can be mounted on any angle. Note 5 says that highway grates shall meet H-20 load rating.