Robinson_09051867__0436

Masonry[underlined] shall be classified as follows:

Class No. 1. Hammer-dressed Masonry.

Class No. 2. Rubble Bridge Masonry.

Class No. 3. Concrete Masonry

Class No. 4. Includes Culvert Masonry and Foundation
Wall for Trestle Work.

Class No. 5. Slope "of"[crossed out] or Retaining Walls, including
paving in foundations.

Class No. 6. Brick Work.

Class No. 7. Blind or French Drains.

1st. "Hammer Dressed Masonry"[underlined] will embrace piers,
abutments for bridges, viaducts, and tunnel masonry, and
shall be of the best description of hammer-dressed work
with rock face, laid in regular courses, with stone of
uniform thickness, of the best quality, and to be ac=
ceptable to the Engineer

The beds of all face stone shall be in width at least
equal to their rise, and shall be rough dressed to a half=
inch joint.

The end joints shall be dressed back at least eight
inches from the face of the wall to a half-inch joint.

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

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