3.2
MOISTURE AND ALKALINITY TESTS
Concrete slab shall be tested for moisture content and excessive alkalinity
in accordance with CRI 104.
3.3
PREPARATION OF CONCRETE SUBFLOOR
**************************************************************************
NOTE: Designer must coordinate need for sealing of
concrete slab with project requirements such as wet
conditions which might occur in hospital care.
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Installation of the carpeting shall not commence until concrete substrate
is at least 90 days old. The concrete surfaces shall be prepared in
accordance with instructions of the carpet manufacturer. Type of concrete
sealer, when required, shall be compatible with the carpet.
3.4
INSTALLATION
All work shall be performed by installers who are CFI certified
(International Certified Floorcovering Installer Association), or
manufacturer's approved installers. Installation shall be in accordance
with the manufacturer's instructions and CRI 104. Edges of carpet meeting
hard surface flooring shall be protected with molding; installation shall
be in accordance with the molding manufacturer's instructions.
Ventilation, personal protection, and other safety precautions recommended
by the manufacturer of the adhesive shall be followed. Ventilation ahall
continue for at least 72 hours following installation.
3.4.1
Broadloom Installation
Broadloom carpet shall be installed [direct glue down] [pre-applied
adhesive glue down] and shall be smooth, uniform, and secure, with a
minimum of seams. Seams shall be regular, unnoticeable, and treated with a
seam adhesive. Side seams shall be run toward the light where practical
and where such layout does not increase the number of seams. Breadths
shall be installed parallel, with carpet pile in the same direction.
Patterns shall be accurately matched. Cutouts, as at door jambs, columns
and ducts shall be neatly cut and fitted securely. Seams at doorways shall
be located parallel to and centered directly under doors. Seams shall not
be made perpendicular to doors or at pivot points. Seams at changes in
directions of corridors shall follow the wall line parallel to the carpet
direction. Corridors with widths less than 1.8 m 6 feet shall have the
carpet laid lengthwise down the corridors.
3.4.2
Modular Tile Installation
Modular tiles shall be installed with [permanent vinyl-compatible]
[release] adhesive and shall be snugly jointed together. Tiles shall be
laid in [the same direction] [an alternating pattern] with accessibility to
the subfloor where required.
3.4.3
Entrance Carpet Installation
[Tiles shall be installed with [[permanent vinyl-compatible]] [[release]]
adhesive and shall be snugly jointed together. Tiles shall be laid in
[[the same direction]] [[an alternating pattern]]. [Roll goods shall be
SECTION 09680
Page 18
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