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tractor shall construct same as directed by the City Engineer and
be paid for such curb a price per cubic yard, equivalent to
the price per cubic yard of normal section.

This to be calculated from price per running foot as
given in attached proposal.

Upon this base or sub grade shall be placed a layer of
gravel four (4) inches thick and thoroughly tamped and
compacted and on this foundation the forms in which con-
crete is to be placed shall be erected.

These The forms shall consist of two continuous rows of
plank, one for the back of the curb and one for the front,
and shall be made of two-inch plank well joined.

These plank shall be kept in place by means of stakes
driven on both sides of the form and by braces to adjoin-
ing banks. The curb shall be five (5) inches wide at top and
seven (7) inches wide at bottom and sixteen (16) inches deep and
divided into sections 6 feet long. Metal partitions shall be
used.

These shall be left in position until the blocks are prac-
tically finished when they can be driven out.

These partitions shall be 3-16 inches thick and of shape
and size conforming to the finished cross-section of the curb.
They shall be placed within the form and 6 feet apart. The
form shall then be clamped with suitable steel screw or
wedge clamps.

After the planks for the front of the curb are in place
a 1-inch plank 12 inches wide shall be placed immediately
behind and securely fastened to it. After plastering as usual specified.

The concrete for the body of the curb shall then be
placed within the forms and thoroughly tamped. After
the initial set has taken place, the 1x12-inch plank shall be
carefully removed and the mortar for the face and top of
the curb immediately put into the vacant space and on top
of the concrete.

Concrete.—The concrete shall be composed of one part
Portland cement and eight parts first-class pit gravel con-