SECTION 033000 - CAST-IN-PLACE CONCRETE

Sludge Treatment Project Engineered Container Retrieval and Transfer System January 2012
1. Clean metal duct systems using mechanical cleaning methods that extract contaminants
from within duct systems and remove contaminants from building.
2. Use vacuum-collection devices that are operated continuously during cleaning. Connect
vacuum device to downstream end of duct sections so areas being cleaned are under
negative pressure.
3. Use mechanical agitation to dislodge debris adhered to interior duct surfaces without
damaging integrity of metal ducts, duct liner, or duct accessories.
4. Clean coils and coil drain pans according to NADCA 1992. Keep drain pan operational.
Rinse coils with clean water to remove latent residues and cleaning materials; comb and
straighten fins.
5. Provide drainage and cleanup for wash-down procedures.
6. Antimicrobial Agents and Coatings: Apply EPA-registered antimicrobial agents if
fungus is present. Apply antimicrobial agents according to manufacturer's written
instructions after removal of surface deposits and debris.
3.10 START UP
A. Air Balance: Comply with requirements in Division 23 Section "Testing, Adjusting, and
Balancing for HVAC."
3.11 DUCT SCHEDULE
A. Fabricate ducts with galvanized sheet steel except as otherwise indicated and as follows:
1. Exhaust Ducts: stainless steel type 304 or 304L.
B. Supply Ducts:
1. Pressure Class: Positive 3-inch w.g.
2. Minimum SMACNA Seal Class: A.
3. SMACNA Leakage Class for Rectangular: 12.
4. SMACNA Leakage Class for Round: 12.
C. Return Ducts:
1. Pressure Class: Negative 3-inch w.g.
2. Minimum SMACNA Seal Class: A.
3. SMACNA Leakage Class for Rectangular: 12.
4. SMACNA Leakage Class for Round: 12.
D. Exhaust Ducts:
1. Fabrication pressure classification 20 inches w.g., negative pressure, Class 1.
2. Normal operating pressure 10 inches w.g., negative pressure.
3. Leak Test pressure 12.5 inches w.g., negative pressure.
4. Structural Capability Test pressure 15 inches w.g., negative pressure.
5. Seal duct seams and joints in accordance to the duct pressure classification as described
in AG-1, Article SA-4300. All joints and seams shall be welded construction with
flanged joints and gaskets and flanged joints and gaskets at connections to flanged
equipment and dampers.
Contract 44577 KW Annex - Rev. E 44577-CSI-SPEC-001 233113 - 14