SECTION 033000 - CAST-IN-PLACE CONCRETE

Sludge Treatment Project Engineered Container Retrieval and Transfer System January 2012
PART 2 - PRODUCTS
2.1 PRODUCT OPTIONS AND SUBSTITUTIONS
A. Alternate products may be accepted; follow Section 012513, Product Substitution Procedures.
2.2 FABRICATED METAL EXHAUST STACK
A. The building exhaust stack is freestanding and without access ladder and platform. See
Drawings for elevation, diameter, sample port locations and breech information.
B. Fabricate stack, stack breaching, and stack base from Type 304 or 304L stainless steel sheet or
plate, meeting the requirements of ASTM A 240/ A 240M.
1. Equal to or Less Than 16 Inches in Diameter: 0.125 inch.
2. Larger Than 16 inches in Diameter: 0.1875 inch.
C. Fabricate stack reinforcement and flanged connections from stainless steel bars, and shapes
Type 304 or 304L, meeting the requirements of ASTM A 276.
D. Fasteners for the primary stack connections shall meet the requirements of ASTM A 193, nuts
shall meet the requirements of ASTM A 194, washers shall be 300 series stainless steel.
E. Stack shall have a false bottom for the collection of rain water. False bottom can be flat plate or
elliptical head type with a low point drain. Drain pipe will be routed so that it is accessible from
the outside of the stack structure. Drain connection will be 1 inch schedule 40 NPT threaded
with pipe material compatible with stack.
F. Nozzles shall be Type 304 or 304L minimum schedule 10S pipe meeting the requirements of
ASTM A 312 with Class 150 slip-on flanges meeting the requirements of ASTM A 182/A
182M.
G. Design, fabricate, and inspect stack in accordance with SMACNA “Guide for Steel Stack
Construction” and ASME STS-1. Where there are conflicts, ASME STS-1 shall govern.
1. Seismic and wind loading: In accordance with Section 230548, Section Vibration and
Seismic Controls for HVAC, Piping, and Equipment.
PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine areas and conditions for compliance with requirements.
3.2 CLEANING
A. After completing fabrication, remove burrs, dirt, and construction debris.
Contract 44577 KW Annex - Rev. E 44577-CSI-SPEC-001 235100 - 2