Page 146 - Masonry and Concrete

Masonry Construction Techniques
145
MASONRY CONSTRUCTION TECHNIQUES

in use. This will prevent evaporation of moisture from sand aggregates
as well as excessive wetting, both of which affect how much mixing
water will be needed in the mortar. Packaged mortar ingredients such
as cement, lime, admixtures, and pigments should be stored on pallets
and covered with waterproof tarps or plastic covers to prevent mois-
ture intrusion and damage.

5.2.2 Inspecting Surfaces to Receive Masonry
Concrete supporting elements should be inspected before starting the
masonry work to assure correct layout and dimensions. Footings
should be cleaned to remove laitance, loose aggregate, dirt, and other
substances which would prevent mortar from bonding to the concrete.
In veneer walls, the masonry is laid on flashing rather than directly on
the concrete, but the concrete surface should be relatively smooth and
clean to avoid puncturing the flashing.
5.2.3 Layout and Coursing

The laying up of unit masonry walls is a very ordered and controlled
process. Units must remain in both vertical and horizontal alignment
throughout the height and length of a wall in order to maintain struc-
tural stability and for the coursing to work out with opening locations,
slab connections, anchorage to other structural elements, and so on.

Type of masonry Mortar quantity, cu. yds.
5
1
5
3- ⁄8" 2- ⁄4" 7- ⁄8" modular
3
brick with ⁄8" mortar joints 0.515 per 1000 brick
Nominal 8" 8" 16" concrete block
3
with ⁄8" mortar joints 1.146 per 1000 block
1
4" 1- ⁄2" 8" paving brick
3
⁄8" mortar joints 0.268 per 1000 pavers
1" thick mortar setting bed 0.820 per 1000 pavers
Cut stone 0.04 to 0.10 per cu.yds. of stone
Fieldstone 0.15 to 0.40 per cu.yds. of stone
FIGURE 5-9

Estimating required mortar quantities. (Adapted from Kolkoski, Masonry Estimating.)

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