transverse field joints which satisfy the requirements for one or more of
the joint performance categories can be obtained with the following types
of connecting bands furnished with suitable band-end fastening devices:
corrugated bands, bands with projections, flat bands, and bands of special
design that engage factory reformed ends of corrugated pipe. The space
between the pipe and connecting bands shall be kept free from dirt and grit
so that corrugations fit snugly. The connecting band, while being
tightened, shall be tapped with a soft-head mallet of wood, rubber or
plastic, to take up slack and ensure a tight joint. [The annular space
between abutting sections of part paved, and fully paved pipe and pipe
arch, in sizes 750 mm (30 inches) 30 inches or larger, shall be filled with
a bituminous material after jointing. ]Field joints for each type of
corrugated metal pipe shall maintain pipe alignment during construction and
prevent infiltration of fill material during the life of the installations.
The type, size, and sheet thickness of the band and the size of angles or
lugs and bolts shall be as indicated or where not indicated, shall be as
specified in the applicable standards or specifications for the pipe.
3.4.2.2
Flexible Watertight, Gasketed Joints
Installation shall be as recommended by the gasket manufacturer for use of
lubricants and cements and other special installation requirements. The
gasket shall be placed over one end of a section of pipe for half the width
of the gasket. The other half shall be doubled over the end of the same
pipe. When the adjoining section of pipe is in place, the doubled-over
half of the gasket shall then be rolled over the adjoining section. Any
unevenness in overlap shall be corrected so that the gasket covers the end
of pipe sections equally. Connecting bands shall be centered over
adjoining sections of pipe, and rods or bolts placed in position and nuts
tightened. Band Tightening: The band shall be tightened evenly, even
tension being kept on the rods or bolts, and the gasket; the gasket shall
seat properly in the corrugations. Watertight joints shall remain
uncovered for a period of time designated, and before being covered,
tightness of the nuts shall be measured with a torque wrench. If the nut
has tended to loosen its grip on the bolts or rods, the nut shall be
retightened with a torque wrench and remain uncovered until a tight,
permanent joint is assured.
3.5
DRAINAGE STRUCTURES
**************************************************************************
NOTE: Coordinate with paragraph MISCELLANEOUS
MATERIALS.
**************************************************************************
3.5.1
Manholes and Inlets
**************************************************************************
NOTE: Prepare the required paragraph or section
covering the essential requirements for reinforced
concrete inlet construction and insert the required
reference to the paragraph or section prepared to
cover these items.
Delete the requirement for flexible watertight
connectors (last sentence) when a watertight
connection between pipe and manholes and inlets is
not required.
**************************************************************************
SECTION 02630
Page 36
Previous Page
