Page 170 - Masonry and Concrete

Masonry Construction Techniques
169
MASONRY CONSTRUCTION TECHNIQUES

5.5 Stone Masonry T 00LS
Construction
To work with stone requires very few
Stone masonry is similar in many ways to tools besides those required for working
unit masonry, but there are also some dif- with mortar. Cutting and shaping rubble
stone will require a brick or stone
ferences. Stone is a natural material, so its
mason’s hammer, a small club hammer,
size and shape are not uniform, and it’s
and a couple of chisels called a pointing
also a very heavy material. Stone is dimen-
chisel and a large pitching chisel or small
sionally stable and does not expand and
mason’s chisel (Figure 5-31).
contract with changes in temperature or
moisture content, so stone masonry con-
struction does not require expansion or control joints.

5.5.1 Cutting and Shaping Stone
When rubble stone is laid in mortar, irregular shapes are taken up to
some degree in the mortar joints themselves. When stone is dry-
stacked without mortar, the fit of the stones must be more precise. For

1 2 3 4 5 6 7 8
1. 2 – 3" WIDE DROVE CHISEL
2. 3 1 /2 – 4 1 /2" WIDE BOASTER OR BOLSTER TOOL
3. 19TH CENTURY TOOTH CHISEL
4. 16TH CENTURY ITALIAN TOOTH CHISEL
5. 19TH CENTURY NARROW CHISEL
6. SPLITTING CHISEL
7. 1 3 / 4", 7 – TOOTH CHISEL
8. 1 1 /2" CHISEL
FIGURE 5-31
Stone working tools. (from Harley J. Mckee, Introduction to Early American Masonry—
Stone, Brick, Mortar and Plaster. The Preservation Press).

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