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A qualified masonry inspector approved by the Contracting Officer shall
perform inspection of the masonry work. Minimum qualifications for the
masonry inspector shall be 5 years of reinforced masonry inspection
experience or acceptance by a State, municipality, or other governmental
body having a program of examining and certifying inspectors for reinforced
masonry construction. The masonry inspector shall be present during
preparation of masonry prisms, sampling and placing of masonry units,
placement of reinforcement (including placement of dowels in footings and
foundation walls), inspection of grout space, immediately prior to closing
of cleanouts, and during grouting operations. The masonry inspector shall
assure Contractor compliance with the drawings and specifications. The
masonry inspector shall keep a complete record of all inspections and shall
submit daily written reports to the Quality Control Supervisory
Representative reporting the quality of masonry construction.
1.5.2
Unit Strength Method
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NOTE: Use this method for clay masonry conforming
to ASTM C 216, ASTM C 62, or ASTM C 652, and tested
by ASTM C 67, with bed joints not exceeding 16 mm
(5/8 inch) and grouted, ASTM C 476, with strength at
least equal to f'm, and also for concrete masonry
units conforming to ASTM C 90 or ASTM C 55, with bed
joints and grout same as clay masonry. If masonry
does not meet these requirements, use Prism Test
Method.
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Compute compressive strength of masonry system "Unit Strength Method," ACI
530/530.1. Submit calculations and certifications of unit and mortar
strength.
1.5.3
Seismic Requirement
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NOTE: For Army projects refer to TI 809-04; for
Navy projects refer to minimum seismic reinforcing
required in NAVFAC P-355, Chapter 13.
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In addition to design requirements of ICC IBC, the Contractor shall provide
additional seismic reinforcement [in accordance with TI 809-04] [as
detailed on [the drawings] [sketches [_____] which are attached at the rear
of this section]]. The total minimum reinforcing percentage for structural
walls shall be 0.20 percent and non-structural walls shall be 0.15 percent.
The maximum spacing of reinforcing bars shall be as follows:
Wall Type
Vertical
Horizontal
Structural
0.609 m
1.219 m
Non-structural
1.219 m
2.032 m
SECTION 04200
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