Robinson_09051867__0402

An arras of one inch shall be cut around the
face joints of each stone, leaving the balance a rock
face; or the face may be pitched off to the face joints,
true to the batter marked on the plan.

The face stone shall be laid with one header to
two stretchers, the headers to be in length at least
twice the width of the stretchers, and where the wall
is less than four feet in thickness the headers
shall, if required by the Engineer, extend entirely
through the wall.

All stones shall be reduced to their proper di=
mensions before being brought upon the wall, and
no work will be allowed on the wall to the injury
of the stone already laid.

The backing shall be laid so as to have a
proper bond with the face stone, and shall be
carried up at the same time, all irregularities or
cavities shall be filled up and made solid before
the next course is commenced.

The tops or coping of all abutments and piers shall
be laid with broad stone, dressed down to an even
surface "to an even surface"[crossed out] to receive the wall caps
as said Engineer may direct.

2d. "Rubble Bridge Masonry"[underlined] will include smaller
bridges for streams, road and farm bridges, and
shall be built of a quality of stone acceptable to the
Engineer, as follows: The corner stones and coping
shall be dimension stone, with dressed beds and joints,

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