Masonry Magazine December 1988 Page. 18
TABLE A1
Guide for the Selection of Masonry MortarsA
Mortar Type | Location | Building Segment | Recommended | Alternative
---|---|---|---|---
Exterior, above grade | loadbearing wall | | N | S or M
| non-loadbearing wall | | N | O or S
| parapet wall, chimney and veneer wall | | N | S
Exterior, at or below grade | foundation wall, retaining wall, manholes, sewers, pavements, walks and patios | | M | SC or NC
Interior | loadbearing wall | | N | S or M
| non-loadbearing partitions | | O | N
This table does not provide for many specialized mortar uses, such as reinforced masonry, acid-resistant mortars and fire box mortar.
Type O mortar is recommended for use where the masonry is unlikely to be frozen when saturated or unlikely to be subjected to high winds or other significant lateral loads. Type N or S mortar should be used in other cases.
Masonry exposed to weather in a nominally horizontal surface is extremely vulnerable to weathering. Mortar for such masonry should be selected with due caution.
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