substitution request - Alliance Construction Solutions

C. Specification “C”, Flexible Fiberglass Equipment Insulation: ASTM C-553, Type I, 1.5 lb.
per cu. ft. density. “k” factor shall be a maximum of 0.45 at 250° F mean temperature,
450° F temperature limit.
D. Specification “D”, Calcium Silicate Equipment Insulation: ASTM C-533, Type I, block-type.
“k” factor shall be a maximum of 0.87 at 1000° F mean temperature, compression
strength of 200 psi for 5% compression, and minimum transverse strength 60 psi.
E. Specification “E”, Flexible Closed Cell Elastomeric Insulation: ASTM C-534, Type I. “k”
value shall be a maximum of 0.27 at 75° F mean temperature, 220° F temperature limit,
and water vapor permeability of 0.10 perm or less.
F. Jacketing Material for Equipment Insulation: Provide presized glass cloth jacketing
material, not less than 7.8 ounces per square yard, or metal jacket at Installer's option,
except as otherwise indicated.
G. Equipment Insulation Compounds: Provide adhesives, cements, sealers, mastics and
protective finishes as recommended by insulation manufacturer for the applications
indicated.
H. Equipment Insulation Accessories: Provide staples, bands, wire, wire netting, tape, corner
angles, anchors and stud pins as recommended by insulation manufacturer for the
applications indicated.
PART 3 – EXECUTION
3.01 INSPECTION:
A. Examine areas and conditions under which mechanical insulation is to be installed. Do
not proceed with work until unsatisfactory conditions have been corrected in a manner
acceptable to Installer.
B. Workmanship shall be first class and of the highest quality. Poor installation or
unacceptable appearance, as determined by the Engineer, shall be due cause to reject the
entire project in whole, and retainage will be withheld until corrective action is completed
to the Engineer's satisfaction.
3.02 PIPING SYSTEM INSULATION:
A. All portions of the following piping systems shall be insulated with Specification “A”
Fiberglass Piping Insulation. See Table 1 for minimum insulation thicknesses required.
1. Piping systems to be insulated:
Project No.: 10145
550 15 th Street Dual Brand Hotel
03/16/2012
a. Domestic cold water piping.
b. Non-potable cold water piping.
c. Domestic chilled water piping.
d. Domestic hot water: supply, recirculated and tempered.
e. Interior horizontal storm water and overflow drain piping below roofline,
including roof drain bodies.
f. Pumped storm water piping exposed to weather, horizontal and vertical.
22 0719 - 4 PLUMBING INSULATION