Scope. The work covered by this specification consists in furnishing
all plant, labor, equipment, appliances and materials, and in performing
all operations in connection with the furnishing and placing of all
concrete.
Immediately after removal of forms, all unsightly ridges or
lips shall be removed and undesirable local bulging on the surfaces
shall be remedied. Excessive rubbing of formed surfaces shall not
be permitted. All voids and holes left by the removal of tie rods
shall be reamed and neatly filled with dry-patching mortar (preshrunk)
mixed in proportions directed by the Township Engineer. The cement
used in the mortar shall be a blend of Portland cement and White Portland
cement properly proportioned so that the final color of the cured
mortar will be same as the color of the surrounding concrete. Defective
concrete shall be repaired by cutting out the unsatisfactory material
and placing new concrete, which shall be formed with keys, dovetails
or anchors to attach it securely in place. Concrete for patching shall
be drier than the usual mixture and shall be thoroughly tamped in
place. All finishing, filling or voids and tie rod holes, and patching
of exposed surfaces shall be perfumed immediately after form is removed,
unless otherwise authorized or directed by the Township Engineer.
All unformed surfaces of concrete that are not to be covered by additional
concrete or backfill shall have a wood float finish without additional
mortar and shall be true to elevation as shown on the drawings. Care
shall be taken to see that all excess water is removed before making
any finish. Other surfaces shall be brought to the specified finished
elevation and left true and regular. Where indicated on the drawings,
joints shall be carefully made with a jointing tool. Every precaution
shall be taken by the contractor to protect finished surfaces from
stains and abrasions. Surfaces or edges likely to be injured during
the construction period shall be properly protected.