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 RELATEDWORK:
A. Section 02300, EARTHWORK
B. Section 02745, PAVING
C. 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 concrete bases. Concrete bases shall be precast
unless otherwise specified. Invert channels shall be formed of brick and mortar upon the
base.
C. Catch basins shall have a 4-foot deep sump supplied by E.L. Lebaron Foundry
Company, Brockton, MA., or approved equal unless otherwise specified.
D. Riser and cone sections shall be precast concrete.
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
02631-1
