Project Number: 228730 WWTEF SCADA Upgrades
Issue Date: September 2017 Nashua, NH
3. Seal all joints around pipes, ducts, or electrical outlets penetrating the
ceiling. Apply a continuous ribbon of acoustical sealant on vertical web of
wall or edge moldings.
4. Wipe back of tile to remove accumulated dust. Daub acoustical units on
backside with four equal daubs of adhesive. Apply daubs near corners of
tiles. Ensure that contact area of each daub is at least 2-inch diameter in
final position. Press units into place, aligning joints and abutting units tight
and uniform without differences in joint widths.
3.02 SCHEDULING
A. Complete and dry interior finish work before ceiling installation. Complete all
Work above the ceiling line; install and start operating heating, ventilating, and air
conditioning systems in order to maintain temperature and humidity requirements.
3.03 CLEANING
A. Following installation, clean dirty or discolored surfaces of acoustical units and
leave them free from defects. Remove units that are damaged or improperly
installed and provide new units as directed.
3.04. FIELD QUALITY CONTROL
A. Provide in accordance with Division 01 General Requirements.
3.05 STARTUP & COMMISSIONING
A. Provide in accordance with Division 01 General Requirements.
3.06 CLOSEOUT ACTIVITIES
A. Provide in accordance with Division 01 General Requirements.
END OF SECTION
ADDENDUM NO. 3 ACOUSTICAL CEILINGS
WOODARD & CURRAN 09 51 00-6 (3)
