Masonry Magazine April 1992 Page. 31
ROOF
FLOOR
FOUNDATION
10 FT (3 m) MAXIMUM
REINFORCEMENT LOCATION, MINIMUM AREA OF 0.2 IN.2 (129 mm²), EACH
Mimimum Reinforcement Requirements for Seismic Zone 2
FIG. 6
24 IN. (610 mm) OR 40 BAR
DIAMETERS, TYPICAL
ALTERNATE LOCATION
IN FOUNDATION
MATERIALS AND CONSTRUCTION
General
The provisions of ACI 530.1-92/ASCE 6-92, "Specifications for Masonry Structures" have minimum material and construction requirements for masonry structures designed in accordance with Chapter 9 empirical provisions. Masonry units, mortar, grout, reinforcement and accessories are included. This document should be referenced in the project specifications and can be modified as required for the particular project.
Masonry Units
The products section permits the use of clay brick, concrete masonry units and stone masonry in empirically designed masonry structures. ASTM standards for clay or shale masonry covered by ACI 530.1/ASCE 6 are ASTM C 34, C 56, C 126, C 212, C 216 and C 652. Grade or class of the units to be used in construction are determined by exposure conditions and required durability. For further information on the manufacture, designation and selection of clay masonry units, see Technical Notes 9 Series.
Mortar and Grout
Mortar is required to conform to ASTM C 270 Mortar for Unit Masonry. When job site pigments are used to color mortar there are maximum percentages of color pigment by weight of the cement content which can be added. For portland cement-lime mortars, the maximum content of the coloring pigment is limited to 10 percent for mineral oxide pigments and 2 percent for carbon black. If masonry cements are used, the percentage by weight for color pigments are halved.
Grout is required to conform to ASTM C 476 Grout for Unit Masonry. This is a proportion specification for either fine or coarse grout used in construction.
Reinforcement and Accessories
ACI 530.1/ASCE 6 contains provisions for reinforcement and metal accessories. All reinforcement and metal accessories are required to be corrosion resistant. Procedures described represent current construction practices and are consistent with model building codes now in existence. Topics that are covered are ASTM standards for the materials, inspection, and de-