Robinson_09051867__0437

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four feet in thickness the headers shall, if required by the
Engineer, extend entirely through the wall.

All stone shall be reduced to their proper dimensions
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 receive the wall caps as said Engineer may direct.

2nd. "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, and rock face, an
arras of one inch to be cut on the angles or corners true
to the batter marked on the plum.

The body of the work shall be laid with suitable stone
of large size in regular courses, which may be made up
in some cases with two or more stones laid to inch joints,
the whole thoroughly and properly bonded with the
proper proportion of headers and stretchers, and shall
in all cases be so scabble pointed or otherwise dressed
with joints not exceeding an inch in width as to have
a good general bearing upon each other without the
aid of chips, pinners, or anything that may be removed

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Notes and Questions

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2MM19

"arras" and "seabble" sound like Lewis Carroll but are stone masonry terms