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).
1.02 RELATED WORK:
Section 01330, SUBMITTALS
Section 02085, POLYVINYL CHLORIDE GRAVITY PIPE AND FITTINGS
Section 02300, EARTHWORK.
Section 02745, ROAD RESTORATION
mo Oo BP PS
Section 03302, FIELD CONCRETE
1.03 SYSTEM DESCRIPTION:
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 3-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
2019 Sewer Replacement Project Precast Manholes and Catch Basins
Nashua, NH 0263 1-1
