3.9.2
[Training Walls
Concrete for training walls shall be as shown in the drawings and as
specified in paragraph VERTICAL FACINGS FOR RCC CONSTRUCTION.]
3.9.3
Finishing
3.9.3.1
General
The ambient temperature of spaces adjacent to surfaces being finished shall
be not less than 10 degrees C 50 degrees F. In hot weather when the rate
of evaporation of surface moisture, as determined by use of Figure 2.1.5 of
ACI 305R, may reasonably be expected to exceed 1 kg/sq m 0.2 lb/sq ft per
hour, provisions for windbreaks, shading, fog spraying, or wet covering
with a light-colored material shall be made in advance of placement, and
such protective measures shall be taken as quickly as finishing operations
will allow. All unformed surfaces that are not to be covered by additional
concrete or backfill shall have a float finish, unless a trowel finish is
specified, and shall be true to the elevation shown. Surfaces to receive
additional concrete or backfill shall be brought to the elevation shown in
the drawings and left true and regular. Exterior surfaces shall be sloped
for drainage unless otherwise shown or as directed. Joints shall be
carefully made with a jointing or edging tool. The finished surfaces shall
be protected from stains or abrasions.
3.9.3.2
Float Finish
Surfaces shall be screeded and darbied or bullfloated to bring the surface
to the required finish level with no coarse aggregate visible. No water,
cement, or mortar shall be added to the surface during the finishing
operation. The concrete, while still green but sufficiently hardened to
bear a man's weight without deep imprint, shall be floated to a true and
even plane. Floating may be performed by use of suitable hand floats or
power-driven equipment. Hand floats shall be made of magnesium or
aluminum. Tolerance for a floated finish shall be true plane within 8 mm
in 3000 mm 5/16 inch in 10 feet as determined by a 3-m 10-foot straightedge
placed anywhere on the slab in any direction.
3.10
TESTS AND INSPECTIONS
3.10.1
General
**************************************************************************
NOTE: The title of the certification provided by
ACI that concrete inspectors/technicians have to
have to perform concrete testing was changed from
"Concrete Transportation Construction Inspector" to
"Concrete Construction Inspector" in 2004. Since
the certification is good for 5 years, both titles
will be kept in the specifications through 2006;
pick the correct bracketed statement for projects
prior to 2004.
**************************************************************************
The Contractor shall perform the inspection and tests as described below,
and based upon the results of these inspections and tests, he shall take
the action required and submit reports as required. When, in the opinion
of the Contracting Officer, the concreting operation is out of control,
SECTION 03701
Page 58
Previous Page
