| Associated Standards |
 | | MTO 407 | - | The Construction of Manholes, Catchbasins, Ditch Inlets and Valve Chambers |
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 | | OPSD 0701.0300 | - | Precast Concrete Maintenance Hole Components, 1200 mm Diameter, Tapered Top and Flat Cap |
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 | | OPSD 0701.0400 | - | Precast Concrete Maintenance Hole Components, 1500 mm Diameter, Transition Cone and Slabs |
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 | | OPSD 0701.0500 | - | Precast Concrete Maintenance Hole Components, 1800 mm Diameter, Transition Slabs |
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 | | OPSD 0701.0600 | - | Precast Concrete Maintenance Hole Components, 2400 mm Diameter, Transition Slab |
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 | | OPSD 0701.0700 | - | Precast Concrete Maintenance Hole Components, 3000 mm Diameter, Transition Slab |
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 | | OPSD 0701.0800 | - | Precast Concrete Maintenance Hole Components, 3600 mm Diameter Transition Slab |
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 | | OPSD 0702.0400 | - | Precast Concrete Ditch Inlet Maintenance Hole, Type A, 1200 mm x 1200 mm |
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 | | OPSD 0702.0500 | - | Precast Concrete Ditch Inlet Maintenance Hole, Type B, 1200 mm x 1200 mm |
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 | | OPSD 0703.0110 | - | Precast Concrete Single Inlet Flat Cap, 1500 mm Diameter |
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 | | OPSD 0703.0120 | - | Precast Concrete Single Inlet Flat Cap, 1800 mm Diameter |
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 | | OPSD 0703.0130 | - | Precast Concrete Single Inlet Flat Cap, 2400 mm Diameter |
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 | | OPSD 0703.0140 | - | Precast Concrete Single Inlet Flat Cap, 3000 mm Diameter |
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 | | OPSD 0703.0150 | - | Precast Concrete Single Inlet Flat Cap, 3600 mm Diameter |
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 | | OPSD 0705.0200 | - | Precast Concrete Twin Inlet Catch Basin, 600 mm x 1450 mm |
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 | | OPSD 0706.0100 | - | Precast Concrete Ditch Inlets, 600 mm x 1200 mm with 1500 mm Dia Flat Cap |
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 | | OPSD 0706.0200 | - | Precast Concrete Ditch Inlets, 600 mm x 1200 mm with 1800 mm Dia Flat Cap |
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 | | OPSD 0706.0300 | - | Precast Concrete Ditch Inlets, Type A, 600 mm x 1200 mm with 2400 mm Dia Flat Cap |
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 | | OPSD 0706.0400 | - | Precast Concrete Ditch Inlets, Type A, 600 mm x 1200 mm with 3000 mm Dia Flat Cap |
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 | | OPSS 1351 | - | Precast Reinforced Concrete Components for Maintenance Holes, Catch Basins, Ditch Inlets and Valve Chambers |
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 | | OPSS 407 | - | Maintenance Hole, Catch Basin, Ditch Inlet and Valve Chamber Installation |
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