Rev.9-1-95
SAWED JOINTS IN CONCRETE
BARRIER
602-R-257
Joint B as shown on Standard Sheet
CB-1 shall be constructed to a depth of 25 mm (1 in.) for
standard concrete barrier of 0.84 m (33 in.) in height or to a
depth of 38 mm (12 in.) for concrete barrier of 1.17 m (46 in.)
in height. The spacing of all joints shall be as shown on the
plans.
Sawing of joints shall commence as
soon as the concrete has hardened sufficiently to permit sawing
without excessive raveling, usually 2 to 12 hours. All such
joints shall be sawed before uncontrolled shrinkage cracking
takes place. If necessary, the sawing operations shall take place
during both daytime and nighttime hours, regardless of weather
conditions.