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SECTION 08341
ACOUSTICAL DOOR SYSTEMS
NOTE ** This section is based on products of Krieger Steel
Products, at the following addresses:
NOTE ** Corporate Offices: 4880 Gregg Road
NOTE ** Pico Rivera CA 90660
NOTE ** Tel: 310-695-0645
NOTE ** FAX: 310-692-0146
NOTE ** Branch Offices:
NOTE ** Seattle Office: Tel: 206-547-1382
NOTE ** St. Louis Office: Tel: 314-993-9119
NOTE ** Arizona Office: Tel: 602-834-0555
NOTE **
NOTE ** Krieger Steel Products also manufactures bullet-
resistive steel door systems, sound control steel
door systems, blast-resistant door systems, and
stainless steel doors and frames.
NOTE **
NOTE ** SECTION 08341 - ACOUSTICAL DOOR SYSTEMS, Copyright
1996, The Architect's Catalog, Inc.
PART 1 GENERAL
1.1 SECTION INCLUDES
NOTE ** Delete items in the following paragraphs not
required for project.
A. Acoustical wood door assemblies.
B. Acoustical steel door assemblies.
1.2 RELATED SECTIONS
NOTE ** Delete any sections below not relevant to this
project; add others as required.
A. Section 08710 - Door Hardware.
B. Section 08800 - Glazing.
C. Section 09900 - Paints and Coatings.
1.3 REFERENCES
NOTE ** Delete references from the list below that are not
actually required by the text of the edited
section.
A. ANSI/NWWDA I.S.1. - Wood Flush Doors.
B. ASTM A 366 - Standard Specification for Steel, Carbon,
Cold-Rolled Sheet, Commercial Quality.
C. ASTM A 569 - Standard Specification for Steel, Carbon,
(0.15 Maximum Percent), Hot-Rolled Sheet and Strip,
Commercial Quality.
D. ASTM A 653/A 653M - Standard Specification for Steel
Sheet, Zinc Coated (Galvanized) or Zinc-Iron Alloy-Coated
(Galvannealed) by the Hot Dip Process.
E. ASTM B 117 - Standard Method of Salt Spray (Fog) Testing.
F. ASTM D 1735 - Standard Practice for Testing Water
Resistance of Coating Using Water Fog Apparatus.
G. ASTM E 90 - Standard Test Method for Laboratory
Measurement of Airborne-Sound Transmission Loss of
Building Partitions.
H. ASTM E 336 - Standard Test Method for Measurement of
Airborne Sound Insulation in Buildings.
I. ASTM E 413 - Classification for Determination of Sound
Transmission Class.
J. HMMA 840 - Installation and Storage of Hollow Metal Doors
and Frames; Hollow Metal Manufacturers Association.
K. ISO 4586-2 - High Pressure Decorative Laminates;
International Standards Organization.
L. NEMA LD 3-1995 - High Pressure Decorative Laminates;
National Electrical Manufacturers Association.
1.4 SYSTEM DESCRIPTION
A. Design requirements: Acoustical door assemblies to
include doors, frames, and door hardware to include
gasketing systems, retainers and retainer covers,
automatic or fixed door bottoms, cam-lift hinges,
thresholds, and sills, required to achieve specified
performance requirements.
NOTE ** Insert Sound Transmission Class (STC) requirements
(value 33-55) in the folllowing paragraph.
B. Performance requirements: Sound Transmission Coefficient
rating of STC __ for installed assembly, when tested as
operable door assembly in accordance with ASTM E 90 and
ASTM E 413.
1.5 SUBMITTALS
A. Submit under provisions of Section 01300.
NOTE ** Delete one of the following two paragraphs; first
is for wood doors, second is for steel doors.
B. Product data: Indicate door materials and construction;
indicate veneer species, type and characteristics.
C. Product data: Indicate door materials and construction.
D. Shop drawings: Indicate door opening criteria,
elevations, sizes, types, swings; identify and detail
cutouts.
NOTE ** Delete the following paragraph if door finish is
selected in this section; delete the following two
paragraphs if steel doors are specified.
E. Selection samples: Two (2) sets samples of available
door finishes, representing manufacturer's full range.
F. Verification samples: Two (2) samples of door
construction, 12 inches square in size, cut from corner
of door.
G. Quality assurance submittals:
1. Test Reports:
a. Certified laboratory reports, performed in
accordance with ASTM E90 and ASTM E 413, from
independent testing laboratory qualified under
the National Voluntary Laboratory Accreditation
Program (NVLAP) supporting compliance of
assemblies to specified requirements.
b. Minimum five (5) field tests, performed in
accordance with ASTM E 336 and ASTM E 413 by five
separate independent testing agencies,
substantiating acoustical performance when
installed at no less than four (4) FSTC ratings
below the specified STC rating.
2. Certificates:
a. Contractor's certification that:
1) Products of this section, as provided, meet
or exceed specified requirements.
2) Manufacturer of products of this section meet
specified qualifications.
3. Manufacturer's instructions: Printed installation
instructions for each component.
H. Closeout submittals:
1. Warranty documents, executed by manufacturer in
Owner's name.
2. Operation and maintenance data for assembly
components.
3. Certified statement of manufacturer's authorized
representative, as specified in FIELD QUALITY CONTROL
Article of PART 3 of this section.
4. Certified test reports of independent testing agency,
as specified in FIELD QUALITY CONTROL Article of PART
3 of this section.
1.6 QUALITY ASSURANCE
A. Qualifications:
1. Manufacturer: Minimum five (5) years documented
experience producing systems specified in this
section.
2. Installer: Minimum five (5) years documented
experience producing systems specified in this
section, and approved by manufacturer.
1.7 DELIVERY, STORAGE, AND HANDLING
A. Store frames in accordance with requirements of HMMA 840.
NOTE ** Delete the following paragraph if specifying wood
doors.
B. Store steel doors in accordance with requirements of HMMA
840.
C. Remove wraps or covers from doors and frames upon
delivery at the building site; clean and touch-up
scratches or disfigurement caused by shipping or handling
promptly with rust inhibitive primer.
D. Store units on planks or dunnage in a dry location; store
doors in a vertical position spaced by blocking.
E. Store units covered to protect them from damage, but
permitting air circulation.
1.8 SCHEDULING
A. Furnish manufacturer's mounting templates for door
hardware specified in Section 08710 to manufacturer of
products of this section in time for factory preparation
for door hardware.
PART 2 PRODUCTS
2.1 MANUFACTURERS
A. Acceptable manufacturer: Krieger Steel Products, 4880
Gregg Road, Pico Rivera CA 90660; Telephone 310-695-0645,
FAX 310-692-0146.
NOTE ** Delete one of the two Paragraphs below; coordinate
with Division 01 requirements.
B. Requests for substitutions will be considered in
accordance with provisions of Section 01600.
C. Substitutions: Not permitted.
D. Unless otherwise specified for an individual product or
material, supply all products specified in this section
from the same manufacturer.
2.2 MATERIALS
A. Steel sheet: One of the following:
1. Cold-rolled steel sheet conforming to ASTM A 366,
commercial quality.
2. Hot-rolled steel sheet conforming to ASTM A 569,
pickled and oiled, commercial quality.
B. Galvanized steel sheet: ASTM A 653/A 653M, commercial
quality, minimum G60 zinc coating.
C. Acoustical material: Manufacturer's standard for
required STC rating.
D. Primer: Meeting ASTM B 117 salt spray for 150 hours, and
ASTM D 1735 water fog test for organic coatings for 200
hours.
E. Glazing: Specified in Section 08800.
2.3 COMPONENTS
A. Wood doors: 7-ply construction conforming to ANSI/NWWDA
I.S.1, sizes indicated on Architect-approved shop
drawings by 1-3/4 inches overall thickness, and as
follows:
1. Horizontal edges, top and bottom: Softwood solid
lumber, 3 inches wide by 1-3/8 inches thick.
2. Vertical edges: Hardwood, laminated construction,
1/2 inch wide by 1-3/8 inches thick.
3. Reinforce and mortise for fully-templated hardware.
4. Core: Acoustical material.
NOTE ** Retain one of the following two paragraphs; edit
sub-paragraphs for project requirements.
5. Veneer faces:
a. Species: _______.
b. Cut: _______.
6. Faces: Plastic laminate, nominal sheet thickness
0.050 inch, meeting performance requirements of NEMA
LD 3 Standard GP50 and ISO Standard HGS.
a. Color and pattern: ________.
b. Color and pattern: Selected from manufacturer's
full range of available colors and patterns.
B. Steel doors: Fabricate in accordance with Architect-
approved shop drawings, 1-3/4 inches minimum thickness,
and as follows:
1. Face sheets:
NOTE ** Edit the following two paragraphs for project
requirements.
a. Doors for interior use: Steel sheet, minimum 16
gage sheet thickness.
b. Doors for exterior use: Galvanized steel sheet,
minimum 16 gage sheet thickness.
c. Visible seams on face sheets not permitted.
2. Core:
a. Stiffen face sheets with continuous vertical
sections, formed of steel sheet, which, upon
assembly, span full thickness of interior space
between door faces.
b. Spot-weld stiffeners to both face sheets.
c. Fill spaces between stiffeners with acoustical
material.
3. Vertical edges:
a. Join face sheets at vertical edges by continuous
welding:
1) Join door faces by continuous weld on each
edge, extending full door height.
2) Grind, fill, and dress welds to provide
smooth flush surface.
b. Form edge profiles both vertical edges of doors
with 1/8 inch in 2 inches bevel.
c. Visible seams on vertical edges not permitted.
4. Horizontal edges:
a. Close top and bottom edges of doors with
continuous steel channels, 16 gage minimum; spot-
weld channels to both door faces.
b. Provide openings in bottom closure of exterior
doors to permit escape of entrapped moisture.
c. Provide additional flush closing channel at top
and bottom edges of doors; spot-weld channel to
both door faces.
5. Hardware preparation:
a. Mortise, reinforce, drill, and tap doors at
factory for fully templated mortised hardware
only, in accordance with approved hardware
schedule and supplied templates.
b. Provide reinforcing plates at surface-mounted or
non-templated hardware locations.
NOTE ** Delete the following paragraph if no acoustical
panels required.
C. Acoustical panels: Same materials, construction, and
finish as doors; sizes as indicated on Architect-approved
shop drawings.
D. Frames: Fabricate in accordance with Architect-approved
shop drawings, and as follows:
1. Frames for interior use: Fabricate from steel sheet,
minimum 14 gage thickness.
2. Frames for exterior use: Fabricate from galvanized
steel sheet, minimum 14 gage thickness.
3. Form frame members straight, and of uniform profile
through lengths, as welded units with integral trim,
of sizes and profiles indicated.
a. Weld contact edges of joints closed tight.
b. Miter perimeter trim faces and weld continuously.
4. Stops:
a. Where integral stops are indicated, form minimum
5/8 inch in depth.
b. Butt stop joints.
5. When shipping limitations so dictate, fabricate
frames for large openings in sections designed for
assembly in the field; install alignment plates or
angles, of same material and gage as frame, at each
joint.
6. Hardware preparation:
a. Mortise, reinforce, drill, and tap frames at
factory for fully templated mortised hardware
only, in accordance with Architect-approved shop
drawings and supplied templates.
b. Provide reinforcing plates at surface-mounted or
non-templated hardware locations.
7. Floor anchors:
a. Fabricate of same material as frame material;
minimum 14 gage.
b. Weld anchors inside each jamb for floor
anchorage.
8. Jamb anchors:
a. Fabricate of same material as frame material;
weld anchors inside each jamb for wall anchorage.
b. Provide anchor types for indicated adjacent wall
construction:
1) Frames for installation in masonry walls:
Adjustable jamb anchors, 16 gage, T-shape
type.
2) Frames for installation in stud partitions:
Continuous 16 gage steel channel to surround
stud, welded inside each jamb.
9. Plaster guards: Fabricate from minimum 22 gage
steel; weld in place at hardware mortises on frames
to be set in plaster, masonry, or concrete openings.
10. Provide welded frames with temporary steel spreader
welded to jamb feet for bracing during shipping and
handling.
NOTE ** Delete the following two paragraphs if vision lites
not required.
E. Vision lites:
1. Factory-assemble lites in doors indicated to have
lites, using glazing materials and assembly methods
indicated on approved shop drawings for required STC
rating; field assembly not permitted.
2. Fabricate dual-glazed lites permitting individual
removal of each glazing pane.
F. Loose stops:
1. Fabricate of minimum 12 gage steel, with factory-
drilled and countersunk holes for fasteners.
2. Form stops for mitered corner joints.
3. Supply cadmium-coated or zinc-coated fasteners, size
and quantity required for fastener holes.
G. Door hardware:
1. Supply gasketing systems, retainers, retainer covers,
automatic door bottoms, fixed door bottoms, cam-lift
hinges, thresholds, and sills as indicated on
Architect-approved shop drawings, or specified in
manufacturer's product data for project conditions,
to achieve specified performance requirements.
2. All other door hardware is specified in Section
08710.
2.4 FINISHES
A. Shop priming for door frames:
1. After fabrication, fill and sand tool marks and
surface blemishes on both faces and both vertical
edges smooth and free from irregularities.
2. Treat for paint adhesion, then apply primer to all
accessible surfaces; allow to cure prior to shipment.
2.5 SOURCE QUALITY CONTROL
NOTE ** Delete the following paragraph if wood doors not
specified.
A. Wood door fabrication tolerances: In accordance with
ANSI/NWWDA I.S.1.
B. Hardware location on doors and frames:
1. Hinges:
a. Top: 5 inches from head of frame to top of
hinge.
b. Bottom: 10 inches from finished floor to bottom
of hinge.
2. Unit and integral type locks and latches: 38 inches
from finished floor to centerline of knob.
3. Deadlocks: 48 inches from finished floor to
centerline of strike.
4. Panic hardware: 38 inches from finished floor to
centerline of cross bar, or as indicated on hardware
template.
NOTE ** Finished floor is defined as the top surface of the
floor, except when resilient tile or carpet is
used, when it is the top of the concrete slab.
PART 3 EXECUTION
3.1 EXAMINATION
A. Verification of conditions:
1. Prior to installation, check and correct frames for
size, swing, squareness, alignment, twist and plumb.
2. Verify openings are in accordance with approved shop
drawings.
B. Installer's examination:
1. Have installer of this section examine conditions
under which construction activities of this section
are to be performed, then submit written notification
if such conditions are unacceptable.
2. Transmit two copies of installer's report to
Architect within 24 hours of receipt.
3. Beginning construction activities of this section
before unacceptable conditions have been corrected is
prohibited.
4. Beginning construction activities of this section
indicates installer's acceptance of conditions.
3.2 PREPARATION
A. Remove steel spreaders from welded frames prior to
installation; use of spreaders for installation purposes
not permitted.
3.3 INSTALLATION
A. Install units in accordance with approved shop drawings
and manufacturer's printed installation instructions; in
addition, install steel components in accordance with
HMMA 840.
NOTE ** Delete the following paragraph if no oversize
assemblies.
B. Oversize assemblies:
1. Weld field joints in accordance with AWS D1.1 and
approved shop drawings.
2. Finish exposed field welds smooth; touch-up with rust
inhibitive primer.
C. Fill voids between concealed side of frame and adjacent
wall construction with dense fiberglass or lightweight
gypsum plaster in accordance with approved shop drawings
or manufacturer's printed installation instructions.
D. Finish surfaces having abrasion damage smooth; touch-up
with rust inhibitive primer.
E. Install gasketing systems, retainers, retainer covers,
automatic door bottoms, fixed door bottoms, cam-lift
hinges, thresholds, and sills in accordance with
manufacturer's printed instructions.
F. Installation of all other door hardware is specified in
Section 08710.
NOTE ** Verify section references in the following two
paragraphs.
G. Field painting is specified in Section 09900.
H. Site tolerances: Do not exceed the following
installation tolerances:
1. Squareness: Plus or minus 1/16 inch measured on a
line, 90 degrees from one jamb, at the upper corner
of the frame at the other jamb.
2. Alignment: Plus or minus 1/16 inch measured on jambs
on a horizontal line parallel to the plane of the
wall.
3. Twist: Plus or minus 1/16 inch measured at face
corners of jambs on parallel lines perpendicular to
the plane of the wall.
4. Plumb: Plus or minus 1/16 inch measured on the jamb
at the floor.
NOTE ** The above tolerances provide a reasonable guideline
for proper installation of hollow metal frames.
However, it should be noted that the cumulative
effect of the tolerances at their maximum levels
will result in sufficient misalignment to prevent
the door from functioning properly. Care should be
taken to keep each of these tolerances as close to
zero as possible.
3.4 FIELD QUALITY CONTROL
A. Engage and pay for the field services of manufacturer's
authorized representative to:
1. Inspect completed installation of door and frame
assemblies.
2. Test all components through a minimum of ten complete
cycles of operation.
3. Verify each component is correctly installed.
4. Direct installer in adjusting components for correct
operation.
5. Issue certified statement of compliance of installed
door and frame assemblies to Architect-approved shop
drawings.
6. Instruct Owner's maintenance personnel in correct
operation and maintenance procedures for components
of door and frame assemblies.
B. Engage and pay for the services of independent testing
agency to:
1. Test door and frame assemblies selected by Owner or
Architect in accordance with ASTM E 336.
2. Issue certified report documenting compliance of
installed door and frame assemblies to specified
acoustical performance requirements.
C. Notify Architect a minimum of four (4) calendar days
prior to scheduled testing dates.
END OF SECTION