final bid specs 09328.pdf - Freese and Nichols, Inc.

f. Where several pipes can be installed in parallel and at same elevation, provide
multiple or trapeze hangers. Consult with project structural engineer for approval.
g. Support riser piping independently of connected horizontal piping.
h. For below floor hanger installations, place one hanger at each pipe penetration thru a
concrete grade beam, at either side, a minimum of 12 inches from the face of the
grade beam.
X. HANGER RODS
1. Steel Hanger Rods: Threaded both ends.
Y. INSERTS
1. Inserts: Malleable iron case of galvanized steel shell and expander plug for threaded
connection with lateral adjustment, top slot for reinforcing rods, lugs for attaching to
forms; size inserts to suit threaded hanger rods.
Z. INSULATION
1. Pipe insulation for domestic hot and cold water pipe, roof drains and horizontal roof drain
pipe.
a. Heavy duty preformed fiberglass (ASTM C 547, type 1, 2 or 3). Schuller, Knauf or
Certainteed.
b. Preformed flexible elastomeric insulation (ASTM C 534) Armstrong “Armaflex”, or
Schuller “Rubatex”.
c. Preformed unicellular polyolefin foam (ASTM C534) tubular preslit with adhesive.
IMCOA.
INSULATION SCHEDULE
Cold Water
Hot Water
1" thick up to 2" pipe size
1-1/2" thick over 2" pipe size
1" thick up to 2" pipe size
1-1/2" thick over 2" pipe size
d. Provide all purpose jacket, high density white kraft bonded to aluminum foil,
reinforced with fiberglass yarn lap and butt, self sealing, pressure sensitive. Schuller
“Micro-Lok”, Certainteed “Snap-On”.
e. PVC fitting covers, one piece pre molded high impact PVC white gloss insulating
fitting covers and jackets. Schuller “Zeston 2000PVC”.
2. Fire-Test-Response Characteristics: As determined by testing materials identical to
those specified in this Section according to ASTM E 84, by a testing and inspecting
agency acceptable to authorities having jurisdiction. Factory label insulation and jacket
materials and sealer and cement material containers with appropriate markings of
applicable testing and inspecting agency.
a. Insulation Installed Indoors: Flame-spread rating of 25 or less, and smoke-developed
rating of 50 or less.
b. Insulation Installed Outdoors: Flame-spread rating of 75 or less, and smokedeveloped
rating of 150 or less.
AA. PIPING IDENTIFICATION
1. Install manufactured pipe markers indicating service on each piping system. Install with
flow indication arrows showing direction of flow.
a. Pipes with OD, Including Insulation, Less Than 6 Inches: Pre-tensioned pipe
markers. Use size to match pipe and ensure a tight fit.
b. Pipes with OD, Including Insulation, 6 Inches and Larger: Shaped pipe markers.
Use size to match pipe and secure with fasteners.
c. Locate pipe markers and color bands on piping as follows: Near each valve and
control device; Near each branch connection, excluding short takeoffs; Where flow
Plumbing Systems 15400-14
DPR09328