Volume-IF - JantERmantER

DCPL-K4A02
carriageway as constructed shall be correct within a tolerance of
25 mm therefrom. The corresponding tolerance for edges of the
roadway and lower layers of pavement shall be 40 mm.
ii)
Longitudinal Profile
The levels of the subgrade and different pavement courses as
constructed, shall not vary from those calculated with reference to the
longitudinal and cross-profile of the road shown on the drawings or as
directed by the Engineer, beyond tolerances mentioned below :
Sub-grade
Sub-base
Base course
25 mm
20 mm
15 mm
Wearing course 10 mm
Tolerance in wearing course shall not be permitted in
conjunction with the positive tolerance for base course if the
thickness of the former is thereby reduced by more than 6 mm.
iii)
Surface Regularity of Subgrade and Pavement Courses
The surface regularity of completed sub-bases, base courses and
wearing surfaces in the longitudinal and transverse directions shall be
within the tolerances indicated in Table-I.
The longitudinal profile shall be checked with a 3 metre long straight
edge, at the middle of each traffic lane along a line parallel to the
centre of the road. The transverse profile shall be checked with a set
of three camber boards at intervals of 10 metres.
(PCA.775.S034sca7) V.II-D2/S-VII : 3