penetrations will not be permitted unless recommended by the manufacturer
and approved by the Contracting Officer. Bearing surfaces shall be level
and free from irregularities. Irregularities in masonry bearing surfaces
shall be leveled as recommended by the manufacturer or with a stiff cement
grout. Grout shall be allowed to harden before installing the units.
Units shall be installed at right angles to bearings, drawn up tight
without forcing or distortion, and with sides plumb. Slab ends shall be
aligned. Underside of slabs shall present true ceiling surface when the
ceiling is exposed to view. Where shown on approved detail drawings, the
keyways between units and other spaces shall be cleaned and filled solid
with grout. Grout that may have seeped through to surfaces in spaces below
shall be removed before hardening. Joints in ceilings that will be exposed
to view or painted shall be caulked as specified in Section 07920 JOINT
SEALANTS. Erected units shall be temporarily covered until finish roofing
is applied.
3.2
CONCRETE TOPPING
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NOTE: For structures in seismic zones 2 and above,
the minimum thickness of 63 mm (2-1/2 inches) must
be selected.
If topping is not required, delete this paragraph.
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Concrete topping reinforced with welded wire fabric shall be applied to
tops of units continuous over the entire span. Welded wire fabric of the
size indicated shall be as specified in Section 03200A CONCRETE
REINFORCEMENT. Tops of units shall be clean and free of any material that
would reduce adhesion or bond. The concrete topping shall be a minimum of
[63] [50] mm [2-1/2] [2] inches thick of 21 MPa 3,000 psi minimum
compressive strength at 28 days. Concrete materials, quality, placing,
curing, and finishing shall be as specified in Section 03300A CAST-IN-PLACE
STRUCTURAL CONCRETE.
3.3
SPECIAL INSPECTION AND TESTING FOR SEISMIC-RESISTING SYSTEMS
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NOTE: Include this paragraph only when special
inspection and testing for seismic-resisting systems
is required by paragraph 3.2 of FEMA 302, NEHRP
RECOMMENDED PROVISIONS FOR SEISMIC REGULATIONS FOR
NEW BUILDINGS AND OTHER STRUCTURES.
This paragraph will be applicable to both new
buildings designed according to TI 809-04, SEISMIC
DESIGN FOR BUILDINGS, and to existing building
seismic rehabilitation designs done according to TI
809-05, SEISMIC EVALUATION AND REHABILITATION FOR
BUILDINGS.
The designer must indicate on the drawings all
locations and all features for which special
inspection and testing is required in accordance
with Chapter 3 of FEMA 302. This includes
indicating the locations of all structural
components and connections requiring inspection.
SECTION 03410A
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