Armstrong World Industries, Inc.

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Armstrong World Industries, Inc.


Ceiling & Suspension System Specification

Please understand that you are responsible for the accuracy of all project specifications, including
any Armstrong guide specifications that you use.

ARMSTRONG SHALL NOT BE
LIABLE FOR ANY DAMAGES ARISING OUT OF THE USE OF ANY OF
ITS GUIDE SPECIFICATIONS.

SECTION 09 22 26.25

(09120)

METAL SUSPENSION SYSTEMS

Stucco
/Plaster

Suspension System

PART 1
-

GENERAL

1.1 RELATED DOCUMENTS

Drawings and general conditions of Contract, incl
uding General and Supplementary Conditions
and Divisions
-
1 Specification sections apply to work of this section.

1.2 SUMMARY

A.

Section Includes:

1.

Metal suspension for the support of stucco
/
plaster and gypsum drywall in ceiling
and soffit installation for int
erior and exterior finishes.

B.

Related Sections:

1.

09 20 00 Plaster and Gypsum Board Assemblies

2.

09 51 00 Ceilings

3.

Division 23 Heating, Ventilating and Air Conditioning

4.

Division 26 Electrical

1.3 REFERENCES

A.

American Society for Testing and Materials (ASTM):

1.

A
STM A 641 Standard Specification for Zinc
-
Coated (Galvanized) Carbon Steel
Wire.

2.

ASTM A 653 Standard Specification for Steel Sheet, Zinc
-
Coated (Galvanized)
by the Hot
-
Dip Process.

3.

ASTM A 1008 Standard Specification for Steel, Sheet, Cold Rolled, Carbon,
Structural, High
-
Strength Low
-
Alloy and High
-
Strength Low
-
Alloy with Improved
Formability"

4.

ASTM B 117 Standard Practice for Operating Salt Spray (Fog) Apparatus

5.

ASTM C 635 Standard Specification for Metal Suspension Systems for
Acoustical Tile and Lay
-
in P
anel Ceilings.

6.

ASTM C 645 Standard Specification for Nonstructural Steel Framing Members

7.

ASTM C 754 Installation of Steel Framing Members to Receive Screw
-
Attached
Gypsum Board

8.

ASTM C1002 Standard Specification for Steel Drill Screws for the Application of

Gypsum Board or Metal Plaster Bases.

9.

ASTM C 1063 Standard for Installation of Lathing and Furring to Receive Interior
and Exterior Portland Cement
-
Based Plaster.

10.

ASTM E 119 Standard Test Method for Fire Tests of Building Construction and
Material (if
applicable).

11.

NOA #07
-
0119.02 Miami/Dade Wind Uplift.

12.

NAO #09
-
0512.02 Miami/Dade Impact.

13.

ESR
-
1289 ICC
-
ES Evaluation Report.

1.4 SUBMITTALS

A.

Samples: Submit samples and data page of
S
tucco
/Plaster

system components,
including main runner, cross tees and angl
e molding.

B.


Manufacturer's Data: Submit technical data and drawings illustrating the details of the
system and the manufacturer’s recommended installation instructions.

1.5 QUALITY ASSURANCE

A.

Single
-
Source Responsibility: To ensure proper interface, all com
ponents shall be
produced or supplied by a single manufacturer.

B.

All accessory components from other manufacturers shall conform to ASTM standards.

C.

Fire Resistance Ratings: As indicated by reference to design designations in UL Fire
Resistance Directory, fo
r types of assemblies in which drywall ceilings function as a fire
protective membrane and tested per ASTM E 119. Installation in accordance with the UL
Design being referenced.

D.

Coordination of Work:

1.

Coordinate work with installers of related trades incl
uding, but not limited to
acoustical ceilings, building insulation, gypsum board, heating ventilating and air
conditioning, electrical s, and sprinklers.

2.

All work above the ceiling line should be completed prior to installing the drywall
sheet goods.

3.


There should be no materials resting against or wrapped around the suspension
system, hanger wires or ties.

1.6 DELIVERY, STORAGE, AND HANDLING

A.

Deliver materials to project site in original, unopened packages and store them in a fully
enclosed space where

they will be protected against damage from moisture, direct
sunlight, surface contamination, and other causes.

1.7 WARRANTY

A.

Suspensions System: Submit a written limited warranty executed by the manufacturer,
agreeing to repair or replace grid components t
hat are supplied with a hot
-
dipped
galvanized coating or aluminum base material. Failures include, but are not limited to:


The occurrence of 50% red rust as defined by ASTM D 610 test procedures as a

result of
d
efects in materials or factory workmanship
.

B.

Warranty Period:


Grid: Ten years from date of installation.

C.

The Warranty shall not deprive the Owner of other rights the Owner may have under
other provisions of the Contract Documents and will be in addition to and run concurrent
with other warranties
made by the Contractor under the requirements of the Contract
Documents.


Note to Specifier: The following Part

2 Products contain
s

a list of all the
products that may used in the installation of
the
Armstrong Stucco
Suspension systems. Delete those items
that are not related to your project.

PART 2
-

PRODUCTS

2.1 MANUFACTURERS

Armstrong World Industries, Inc.

2.2
Stucco
SUSPENSION SYSTEMS

A.

Components:

1.

Main Beam: Shall be double
-
web construction (minimum 0.0179 inch prior to
protective coating
, ASTM C645
),

hot dipped galvanized (per ASTM A653).

a.

SP135
:

135 inch x 1
-
1/2 inch web height, prefinished 15/16 inch flange
with 13
-
1/2 inch Route Spacing and minimum G90 hot dipped
galvanization.

b.

HD8906
: 1
-
11/16 inch web height, 1
-
1/2 inch flange, available with G40
or G90 hot dipped galvanization.

c.

HD8906
HRC
:
1
-
11/16 inch web height, 1
-
1/2 inch flange, available with
G40 or G90 hot dipped galvanization.
(61% Recycle content, 53% Post
Consumer, 8& Pre
-
Consumer).

d.

HD8906F08
: 1
-
11/16 inch web height with pre
-
cut facets (8

inches on
center) for radius installations, 1
-
1/2 inch flange.

e.

HD8906F16
: 1
-
11/16 inch web height with pre
-
cut facets (8 inches from
ends, then 16 inches on center) for radius installations, 1
-
1/2 inch flange.

2.

Primary Cross Tees: Shall be double
-
web stee
l construction (minimum 0.0179
inch prior to protective coating
, ASTM C645
), hot dipped galvanized (minimum
G40 or G90 per ASTM A653),

a.

XL7936G90
: 36 inch
web height 1
-
1/2 inch with rectangular bulb and
pre
-
finished 1
-
1/2" knurled flange.

b.

XL8926
: 24 inch w
eb height 1
-
1/2 inch with rectangular bulb and pre
-
finished 1
-
1/2" knurled flange.

c.

XL8926G90
: 36 inch web height 1
-
1/2 inch with rectangular bulb and
pre
-
finished 1
-
1/2" knurled flange.

3.

Perimeter

Molding:

a.


LAM12
:

12 foot Locking Angle Molding, 1
-
1/4 inch x 1
-
1/4 inch with pre
-
engineered locking tabs punched 8 inches on center, knurled surface,
screw stop hem, pre
-
punched holes in top flange, 4” O.C., .018 mil. 25g.

b.

KAM12
:

12 foot Knurled Angle molding, 1
-
1/4 inc
h x 1
-
1/4 inch, knurled
surface, screw stop hem, pre
-
punched holes in top flange, 4” O.C., .018
mil. 25g.

c.

KAM12HRC
:

12 foot Knurled Angle molding, 1
-
1/4 inch x 1
-
1/4 inch,
knurled surface, screw stop hem, pre
-
punched holes in top flange, 4”
O.C., .018 mil
. 25g. (61% Recycle content, 53% Post Consumer, 8&
Pre
-
Consumer).

d.

KAM10
:

10 foot Knurled Angle molding, 1
-
1/4 inch x 1
-
1/4 inch, knurled
surface, screw stop hem, pre
-
punched holes in top flange 4” O.C., .018
mil. 25g.

e.

KAM1510
10 foot Knurled Angle molding
, 1
-
1/2” inch x 1
-
1/2”, knurled
surface, pre
-
punched holes in top flange 4” O.C., .018 mil. 25g.

f.

KAM1512 10 foot Knurled Angle molding, 1
-
1/2” inch x 1
-
1/2” inch,
knurled surface, pre
-
punched holes in top flange 4” O.C., .018 mil. 25g.

g.

KAM21025
: 10 foot
Knurled Angle molding, 2 inch x 2 inch, knurled
surface, pre
-
punched holes in top flange 4” O.C., .018 mil. 25g.

h.

KAM21020
: 10 foot Knurled Angle molding, 2 inch x 2 inch, knurled
surface, pre
-
punched holes in top flange 4” O.C., .033 mil. 20g.

i.

7838
: Hot di
pped galvanized (minimum G40), un
-
hemmed channel
molding, ¾ inch x 1
-
9/16 inch x 1
-
1/4 inch flange.

2.

Transition Molding: Drywall to Acoustical ceiling.

a.

Pre
-
Painted Armstrong Global White integral acoustical flange and
drywall taping flange, hot dipped col
d rolled steel.

A.

7901
: 120 inch with 3/8 inch reveal and 9/16 inch acoustical
flange.

B.

7902
: 120 inch with 3/8 inch reveal and 15/16 inch acoustical
flange.

C.

7903
: 120 inch with 1 inch acoustical flange.

3.

Clips:

A.

DWACS, DW50, DW58
:
Drywall Attachment Clip for

transitions to
acoustical ceilings

B.

MBAC
: Main Beam Adapter Clip

C.

DW58LT
: Transition Clip for 5/8” drywall with Locking Tabs.

D.

DW50LT
: Transition Clip for 5/8” drywall with Locking Tabs.

E.

MBSC2
: Main Beam Spacer Clip.

F.

GSC9
: Adjustable Grid Spacer Clip, 9
inch.

G.

GSC12
: Adjustable Grid Spacer Clip, 12 inch.

H.

GSC14
: Adjustable Grid Spacer Clip, 14 inch.

I.

DW30C
: 30 degree, Drywall Angle Clip

J.

DW45C
: 45 degree, Drywall Angle Clip

K.

DW60C
: 60 degree, Drywall Angle Clip

L.

DW90C
: 90 degree, Drywall Angle Clip

M.

XTAC
:

Cross

Tee Adapter Clip.

N.

DDC
: Double Drywall Clip.

O.

DLCC
: Direct Load Ceiling Clip.

P.

DWC
: Drywall Clip.

Q.

RC2
: Radius Clip required to cover all pre
-
cut facets, including those not
being clipped.

R.

QSUTC
: Uptight Clip.

2. 2.3

CUSTOM PERIMETER TRIM

(For Interior Use

Only)




A. Product/Manufacturer: Axiom


Transitions; Armstrong World Industries, Inc.



B. Components: Edge trim system for transitions between drywall and suspended
ceilings. Extruded a
luminum alloy 6063 trim channel, 10 foot straight or curved channel

to minimum
(____)

inside and outside radii for tegular panel installations and 10 foot
straight channel for Vector panel installations (full size panels). Attachment to grid
system is provided by the specially designed Axiom tee
-
bar connection clips (AX
TBC)
which lock into specially designed bosses on the Axiom trim channel and are screw
-
attached to the web of the intersecting Armstrong suspension system members. Sections
of trim are joined together using the Axiom splice plate (AXSPLICE).



1.
Straight Transition Channel for Tegular (AXTRTESTR): 2
-
9/16 inch high straight
sections with special bosses formed for attachment to the Axiom tee
-
bar connection clip
or hanging clip; commercial quality, extruded aluminum, factory
-
finished in (factory
-
app
lied baked polyester paint to match Armstrong) ( ) color (CC
-
Chemical Conversion
Coating for field painting) (color custom paint finish color
-
matched to approved sample).



2. Curved Transition Channel for Tegular (AXTRTECUR): 2
-
9/16 inch high curved

channel to minimum
(____)

inside and outside radii sections with special bosses formed
for attachment to the Axiom tee
-
bar connection clip or hanging clip; commercial

quality,
extruded aluminum, factory
-
finished in (factory
-
applied baked polyester paint to match
Armstrong) ( ) color (CC
-
Chemical Conversion Coating for field painting) (color custom
paint finish color
-
matched to approved sample).



3. Straight Transi
tion Channel for Vector (AXTRVESTR): 2
-
9/16 inch high straight
sections with special bosses formed for attachment to the Axiom tee
-
bar connection clip
or hanging clip; commercial quality, extruded aluminum, factory
-
finished in (factory
-
applied baked polye
ster paint to match Armstrong) ( ) color (CC
-
Chemical Conversion
Coating for field painting) (color custom paint finish color
-
matched to approved sample).



4. Axiom Straight Transition Channel: (2” AXTR2STR)(4” AXTR4STR)(6”
AXTR6STR)(8” AXTR8STR) w
ide face with 3/4 inch horizontal legs, straight sections
with special bosses formed for attachment to the Axiom tee
-
bar connection clip or
hanging clip; commercial quality, extruded aluminum, factory
-
finished in (factory
-
applied
baked polyester paint to

match Armstrong) ( ) color; (custom paint finish color
-
matched
to approved sample).



5. Axiom Curved Transition Channel: (2” AXTR2CUR)(4” AXTR4CUR)(6” AXTR6CUR)
wide face with 3/4 inch horizontal legs, curved channel to minimum 36 inch

inside and
ou
tside radii sections with special bosses formed for attachment to the Axiom tee
-
bar
connection clip or hanging clip; commercial quality, extruded aluminum, factory
-
finished
in (factory
-
applied baked polyester paint to match Armstrong) ( ) color; (custo
m paint
finish color
-
matched to approved sample).



6. Axiom Splice Plate (AX4SPLICE): Galvanized steel finish; formed to fit into special
bosses and locked in place with 4 factory
-
installed screws.



7. Axiom Tee
-
Bar Connection Clip (AXTBC): Galvanize
d steel (unfinished) (finish to
match trim channel) formed to fit into special bosses and locked in place by factory
-
installed screws and attached to Armstrong (Prelude

) (Prelude Plus XL Fire Guard)
(Suprafine

) (Interlude

) (Silhouette

) (Trimlok

) (Clea
n Room) (Drywall Furring
System) suspension system members.







PART 3
-

EXECUTION

3.1 INSTALLATION
-

GENERAL

A.

Install
S
tucco
/Plaster

suspension system in accordance with the manufacturer's
technical
guide
CS3541,and

in compliance with ASTM installation standard, and with applicable
codes as required by the authorities having jurisdiction.

B.

The Armstrong Drywall Grid System can be installed in interior or exterior applications.

C.

Install
suspension
spaced as required for

interior applications, exterior applications, or
wind load applications.

D.

Main beams shall be suspended from the overhead construction with hanger wire,
spaced as required for expected ceiling loads, along the length of the main beams. Add
additional wire
as needed when using compatible clips and accessories.

E.

Install cross tees at on center spacing as specified by the
Stucco/Plaster
system
manufacturer.

F.

Install diamond mesh or flat ribbed lath with wafer head self
-
drilling screws spaced as
required to cross

tees.

G.

Install perimeter hot dipped galvanized channel molding or angle at wall/ceiling junctures
to support main runners and cross tees in an isolation manner. Isolation is mandatory
when installing any stucco system.

H.

Isolation:

1.

Do not fasten main runner
s or cross tees to perimeter masonry or concrete
construction. Allow clearance between such construction at the ends of main
runners and cross tees.

2.

Channel molding is permitted when screws are attached to main runner flange
for isolation.

I.

Expansion Joint
s: Provide expansion joints where shown on drawings.

J.

Control Joints: Install as shown on drawings, provide discontinuous laps over joints. Do
not bridge joints.

K.

Plaster stops, grounds, and corner pieces are attached to system with wafer head screws
and/or
#18 gauge tie wire.

L.

Stucco/P
laster mixture and thickness to be in accordance with manufacturer's
recommendations and applied in the same manner as when using channel iron for
suspension, per American National Standards Institute (ANSI) Specifications.

M.

For
light fixtures (Type G, Type F) use secondary framing cross tees as required to frame
opening.

N.

Single cross tees in a route hole to be secured by 7/16 inch framing screw or alternative
methods.

3.2 INSTALLATION
-

EXTERIOR APPLICATIONS

A.

Use G90 components f
or exterior applications.

B.

Use vertical bracing as required by codes and standards in accordance with local
jurisdiction (non
-
fire rated installations).

C.

Install main beams as required according to Wind Uplift Design or local codes and
standards.

D.

Install
cross tees as required according to Wind Uplift Design or local codes and
standards, with additional tees when point loading (vertical), and with additional hanger at
midspan of cross tee, as needed.

3.3 INSTALLATION
-

INTERIOR APPLICATIONS

A.

Install main
beams and cross tees at the on center spacing required for ceiling loading,
and location of in
-
ceiling services.

B.

Additional bracing as required by code.

3.4 INSTALLATION
-

RADIUS APPLICATIONS

A.

Determine the bow or camber (Convex or Concave) in a main runner
.

B.

Establish a jig or pattern on a flat surface; mark locations to cut main beam; and use four
pan head screws to fasten a Radius Clip (RC2) flat to the web between the bulb and the
flange, per the manufacturer's instructions.

C.

Install main beams with on cen
ter spacing and wire spacing, as needed, to support
expected ceiling load.

D.

Additional bracing may be required by code.

E.

Install cross tees at on center spacing as specified by the manufacturer.

END OF SECTION