SECTION 033000 - CAST-IN-PLACE CONCRETE

Sludge Treatment Project Engineered Container Retrieval and Transfer System January 2012
2. Antimicrobial compound shall be tested for efficacy by an NRTL and registered by the
EPA for use in HVAC systems.
3. Coating containing the antimicrobial compound shall have a hardness of 2H, minimum,
when tested according to ASTM D 3363.
4. Surface-Burning Characteristics: Maximum flame-spread index of 25 and maximum
smoke-developed index of 50 when tested according to UL 723; certified by an NRTL.
5. Shop-Applied Coating Color: White.
6. Antimicrobial coating on sheet metal is not required for duct containing liner treated with
antimicrobial coating.
E. Reinforcement Shapes and Plates: ASTM A 36/A 36M, steel plates, shapes, and bars;
galvanized. ASTM A 276/A 276M steel plates, shapes, and bars; Type 304 or 304L stainless
steel.
F. Flanges: (exhaust ductwork) Flanges shall be fabricated of minimum 1/4-in.-thick stainlesssteel
plate or angle, round flanges shall match the dimensions specified in SMACNA Round
Industrial Duct Construction Standards, Class 1. Rectangular flanges shall be fabricated in
accordance with SMACNA Rectangular Industrial Duct Construction Standards, Class 1. Plate,
shapes or bars shall be Type 304 or 304L-series stainless-steel meeting the requirements of
ASTM A 276/A 276M. Flange material shall match the duct material. Submit material test
reports.
G. Flange Gaskets: (exhaust ductwork) 1/8” thick, ASTM D1056, Grade 2C3 or 2C4, Neoprene,
or EPDM polymer with polyisobutylene plasticizer. Flange bolt torques shall be identified on
the shop drawings and in accordance with gasket manufacturer’s recommendations.
H. Fasteners: (exhaust ductwork): Stainless-steel bolts, cap screws, and washers shall be used on
all stainless-steel materials. Bolts, cap screws, and washers shall meet the requirements of
ASTM A 193/A 193M, Grade B8. Nuts shall be heavy hex nuts meeting the requirements of
ASTM A 194/A 194M, Grade 8. Bolts and cap screws shall be grade marked. Submit material
test reports or Certificate of Conformance.
I. Anti-galling compound: Loctite® 8013 or 8009 shall be applied where stainless-steel bolts are
used.
J. Tie Rods: Galvanized steel, 1/4-inch minimum diameter for lengths 36 inches or less; 3/8-inch
minimum diameter for lengths longer than 36 inches.
2.5 SEALANT AND GASKETS
A. General Sealant and Gasket Requirements: Surface-burning characteristics for sealants and
gaskets shall be a maximum flame-spread index of 25 and a maximum smoke-developed index
of 50 when tested according to UL 723; certified by an NRTL.
B. Two-Part Tape Sealing System:
1. Tape: Woven cotton fiber impregnated with mineral gypsum and modified
acrylic/silicone activator to react exothermically with tape to form hard, durable, airtight
seal.
2. Tape Width: 3 inches.
Contract 44577 KW Annex - Rev. E 44577-CSI-SPEC-001 233113 - 6