SECTION 02631
PRECAST MANHOLES AND CATCH BASINS PART 1 -
GENERAL
1.01 WORK INCLUDED:
A. This Section covers all precast manholes and catch basins complete, including, but not limited
to, bases, walls, cones, mortar, inverts, frames and covers.
B. Work shall comply with City of Nashua Standard Specifications for Sewers and Drains
(Appendix A).
102 RELATED WORK:
A. Section 01330, SUBMITTALS
B. Section 02085, POLY VINYL CHLORIDE GRAVITY PIPE AND FITTINGS
C. — Section 02300, EARTHWORK
D. Section 02745, ROAD RESTORATION
1.03 = SYSTEMDESCRIPTION:
A. Precast sections shall conform in shape, size, dimensions, materials, and other respects to the details
indicated on the drawings or as ordered by the Engineer.
B. — All manholes and catch basins shall have precast concrete bases, risers and cone sections. Invert
channels shall be formed of brick and mortar upon the base.
C. Catch basins shall have a 4-foot deep sump unless otherwise specified.
1.04 REFERENCES:
A. The following standards form a part of this specification as referenced:
American Society for Testing and Materials (ASTM)
ASTM A48 Gray Iron Castings
ASTM C32 Sewer and Manhole Brick
ASTM C144 _— Aggregate for Masonry Mortar
ASTM C207 Hydrated Lime for Masonry Purposes
ASTM C478 _ Precast Reinforced Concrete Manhole Sections
ASTM C923 Specification for Resilient Connectors Between Reinforced Concrete
2022 Sewer Replacement Project Precast Manholes and Catch Basins
Nashua, NH 02631-1
