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SECTION 07242
PRESSURE-EQUALIZED RAINSCREEN EIFS
NOTE ** This section is based on the Infinity7 System
manufactured by Dryvit7 Systems, Inc., at the
following address:
NOTE ** One Energy Way
NOTE ** P.O. Box 1014
NOTE ** West Warwick RI 02893
NOTE ** Tel: (800) 556-7752 and (401) 822-4100
NOTE **
NOTE ** SECTION 07242 - PRESSURE-EQUALIZED RAINSCREEN EIFS,
Copyright 1998, The Architect's Catalog, Inc.
PART 1 GENERAL
1.1 SECTION INCLUDES
A. Exterior Insulation and Finish System (EIFS) configured
in a cavity wall design capable of providing pressure
equalization and moisture drainage technology.
1.2 RELATED SECTIONS
NOTE ** Delete any sections below not relevant to this
project; add others as required.
A. Section 03300 - Cast-In-Place Concrete.
B. Section 04810 - Unit Masonry Assemblies.
C. Section 05400 - Cold-Formed Metal Framing.
D. Section 06100 - Rough Carpentry.
E. Section 06115 - Sheathing.
F. Section 07210 - Building Insulation.
G. Section 07600 - Flashing and Sheet Metal.
H. Section 07900 - Joint Sealers.
1.3 REFERENCES
A. ASCE 7 - Minimum Design Loads for Buildings and Other
Structures; American Society of Civil Engineers.
B. ASTM C 67 - Standard Test Methods of Sampling and Testing
Brick and Structural Clay Tile.
C. ASTM C 150 - Standard Specification for Portland Cement.
D. ASTM C 297 - Standard Test Method for Tensile Bond
Strength of Flat Sandwich Constructions in Flatwise
Plane.
E. ASTM C 794 - Test Method for Adhesion-in-Peel of
Elastomeric Joint Sealants
F. ASTM C 1063 - Specification for Installation of Lathing
and Furring to Receive Interior and Exterior Portland
Cement-Based Plaster.
G. ASTM C 1135 - Test Method for Determining Tensile
Adhesion Properties of Structural Sealants.
H. ASTM C 1177 - Standard Specification for Glass Mat Gypsum
Board Substrate for Use as Sheathing.
I. ASTM D 1784 - Specification for Rigid Poly(Vinyl
Chloride) (PVC) Compounds and Chlorinated Poly(Vinyl
Chloride) (CPVC) Compounds.
J. ASTM D 2247 - Standard Practice for Testing Water
Resistance of Coatings in 100% Relative Humidity.
K. ASTM E 84 - Standard Test Method for Surface Burning
Characteristics of Building Materials.
L. ASTM E 108 - Standard Test Methods for Fire Tests of Roof
Coverings.
M. ASTM E 119 - Test Methods for Fire Tests of Building
Construction and Materials.
N. ASTM E 283 - Standard Test Method for Determining the
Rate of Air Leakage Through Exterior Windows, Curtain
Walls, and Doors Under Specified Pressure Differences
Across the Specimen.
O. ASTM E 330 - Standard Test Method for Structural
Performance of Exterior Windows, Curtain Walls, and Doors
By Uniform Static Air Pressure Difference.
P. ASTM E 331 - Standard Test Method for Water Penetration
of Exterior Windows, Curtain Wall, and Doors by Uniform
Static Air Pressure Difference.
Q. ASTM G 23 - Standard Practice for Operating Light-
Exposure Apparatus (Carbon-Arc Type) With and Without
Water for Exposure of Nonmetallic Materials.
R. EIMA 101.86 - Standard Test Method for Resistance of
Exterior Insulation Finish Systems to the Effects of
Rapid Deformation (Impact); EIFS Industry Members
Association.
1.4 DESIGN REQUIREMENTS
A. Substrate: Comply with the following:
1. Maximum deflection: 1/240 of span, under full
flexural design loads.
2. Flatness: Flat within 1/4 inch, measured from any
point within a 4 foot radius.
3. Material: Dens-Glass Gold, meeting requirements of
ASTM C 1177 at time of EIFS application.
B. Details:
1. Edges: Encapsulate insulation board edges in
reinforced base coat at all system terminations.
2. Slopes: 6 inches in 12 inches minimum slope; 12
inches maximum length of sloped area.
3. Roofs: System shall not be used for areas defined as
roofs by applicable building code.
NOTE ** The following paragraph applies only to pressure
equalized system. Retain if contractor is to
provide compartment design for Architect's
approval. If compartment design is to be
responsibility of Architect or Architect's
consultant, delete the following paragraph
altogether.
C. Compartmentalization:
1. Divide building into compartments, or location zones,
which approximate areas of differing wind pressures.
Compartment boundaries shall coincide with the
location zones as defined by ASCE 7-95 or wind tunnel
studies.
2. Vertical Elevations: Divide with horizontal
separation at intervals not in excess of 30 feet.
NOTE ** The following paragraph applies only to pressure
equalized system. Retain if contractor is to
provide venting design for Architect's approval.
If venting design is to be responsibility of
Architect or Architect's consultant, delete the
following paragraph altogether.
D. Venting: Provide minimum 2.25 square inches of vent area
for every 300 square feet of wall area, employing Dryvit
Vent Assembly exclusively.
E. Terminations:
1. Hold system back from adjoining materials 3/4 inch
(19 mm) minimum for sealant application. See
Dryvit's Infinity Installation Details, DS120.
2. Terminate Infinity 8 inches (200 mm) minimum above
finished grade.
3. Cover Infinity terminations along tops of parapet
walls with a continuous metal coping.
1.5 PERFORMANCE REQUIREMENTS
A. Comply with the following for durability and structural
performance of completed system:
1. Wind Load: 100 psf minimum, per ASTM E 330.
2. Water Penetration: No penetration per ASTM E 331.
3. Water Resistance: Passes, per ASTM D 2247.
4. Dynamic Pressure Equalization: At 750 Pa, K = 0.99;
phi = 3.7 degrees; per National Research Council of
Canada.
5. Impact: I.S. Reinforcing Mesh 25-49 inch-lbs.,
Panzer7 20 with I.S. Reinforcing Mesh greater than
350 inch-lbs, per EIMA 101.86.
6. Absorption/Freeze/Thaw: Passes ICBO Procedure, 10
cycles.
7. Accelerated Weathering: Passes after 2,000 hours,
per ASTM G 23.
8. Absorption Freeze/Thaw: Passes after 60 cycles, per
ASTM C 67.
9. Tensile Bond: Passed ICBO procedure; passed
accelerated weathering, per ASTM C 297.
10. Air Leakage: Less than 0.001 CFM/sq. ft. (0.3
L/min/sq. m), per ASTM E 283.
11. Moisture Drainage Efficiency: Minimum 95 percent,
per ASTM E 331 (modified).
12. Transverse Load Test: Negative 100 psf (4.8 kPa)
minimum, par ASTM E 330.
B. Comply with the following for fire performance of
completed system:
1. Fire Testing: No propagation, per ASTM E 108.
2. Multi-Story Test: Passed UBC 26-9 ISMA Multi-Story
Test.
3. Full Scale Test: Passed ASTM E 108 (Modified).
4. Rated Wall Test: Passed ASTM E 119 (one hour).
5. BOCA Radiant Heat Ignitability Test: Passed.
6. Surface Burning, Insulation Board: Flame spread less
than 25, smoke developed less than 450, per
ASTM E 84.
7. Surface Burning, Infinitex Finish: Flame spread 10,
smoke developed 5, per ASTM E 84.
8. Surface Burning, Dryshield ABA: Flame spread 5,
smoke developed 0, per ASTM E 84.
9. Surface Burning, I.S. Base: Flame spread 3, smoke
developed 0, per ASTM E 84.
10. Surface Burning, Stone Mist: Flame spread 10, smoke
developed 30, per ASTM E 84.
C. Comply with the following for sealant testing:
1. Adhesion In Peel: 5 lbs/inch (89 kg/m) minimum, per
ASTM C 794.
2. Tensile Bond at 50 Percent Elongation, per
ASTM C 1135 (modified):
a. Dry: 20 psi (138 kPa).
b. 1 and 7 Day Immersion: 15 psi (104 kPa).
c. Frozen: 20 psi (138 kPa).
3. Modulus of Elasticity at 50 Percent Elongation, per
ASTM C 1135 (modified):
a. At Minus 40 Degrees F. (Minus 40 Degrees C): 35
psi (241 kPa).
b. At 180 Degrees F. (82.3 Degrees C): 20 psi (138
kPa).
1.6 SUBMITTALS
A. Submit under provisions of Section 01300.
B. Product Data: Manufacturer's descriptive literature for
each specified product, including complete installation
instructions.
NOTE ** Retain the following only for pressure equalized
system, and only if Contractor is to provide layout
of Infinity.
C. Shop Drawings: Include layout of compartment and venting
systems, layout of expansion joints, and typical details.
D. Quality Assurance Submittals:
1. Submit results of full scale air leakage test
performed in accordance with ASTM E 283 and conducted
by a recognized independent testing laboratory.
2. Submit results of dynamic pressure equalization
evaluation conducted in accordance with procedures
developed by the National Research Council of Canada,
Institute for Research in Construction by a
recognized independent testing laboratory.
3. Submit full scale ISMA Multi-Story Fire Test in
accordance with UBC 26-9 procedure.
4. Material shall be manufactured at a facility covered
by a current ISO 9001 certification.
E. Closeout Submittals: Warranty documents, issued and
executed by manufacturer of EIFS materials and installer.
1.7 QUALITY ASSURANCE
A. Qualifications:
1. Manufacturer of EIFS Materials: Minimum five (5)
years documented experience producing EIFS materials
specified in this section, sponsor of applicator
certification program, and sponsor of certification
and quality assurance program for manufacturers of
materials for EIFS installations not produced by EIFS
materials manufacturer.
2. Manufacturer of Insulation Materials: Manufacturer
having insulating board product listed as meeting
EIFS materials manufacturer's insulation board
specification, and as participant in EIFS
manufacturer's third-party certification and quality
assurance program.
3. Installer: Listed by manufacturer of EIFS materials
as a trained contractor and currently certified for
installation of the Infinity system.
B. Mock-Ups:
1. Construct mock-up of size indicated on drawings;
locate on project site as directed by Architect.
2. Prepare substrate and apply finish as specified in
this section.
3. Maintain mock-up at project site until Architect
directs its removal.
C. Pre-Installation Meeting: Conduct pre-installation
meeting at project site not less than one week before
beginning work of this section, to review contract
documents. Require attendance by representatives of
Owner, Architect, Contractor, independent inspection
agency, manufacturers of major systems, and installers of
EIFS and joint sealers.
1.8 DELIVERY, STORAGE, AND HANDLING
A. Packing, Shipping, Handling and Unloading: Deliver
products to project site in manufacturer's labeled and
sealed packaging.
B. Acceptance at Site: Accept only products in sealed in
unopened manufacturer's packaging with labels intact.
C. Storage and Protection:
1. Store products in manufacturer's unopened packaging
until installation.
2. Maintain dry storage area at minimum 40 degrees F for
products until removal for installation.
3. Take precautions to avoid condensation and excessive
heat build-up when using tarpaulins or plastic sheet
coverings.
1.9 PROJECT CONDITIONS
A. Environmental Requirements:
1. Applying products of this section during periods of
inclement weather is prohibited, except where
surfaces to receive products are protected from
weather during application and until applied products
are cured.
2. Apply products of this section only at minimum
ambient temperature of 40 degrees F and when minimum
ambient temperature will remain minimum 40 degrees F
for following 24 hour period.
B. Sequencing and Scheduling:
1. Coordinate installation of work of this section with
other work.
2. Employ sufficient equipment and personnel to ensure a
continuous operation and an installation free of cold
joints, scaffold lines, texture variations, and other
irregularities.
1.10 WARRANTY
A. Manufacturer's Warranty: Manufacturer's performance
warranty against water intrusion through the system and
into wall cavity, as follows:
1. Pressure Equalized System: 12 years.
2. Non-Compartmentalized System: 10 years.
B. Installer's Warranty: Written limited 5-year labor
warranty.
PART 2 PRODUCTS
2.1 MANUFACTURERS
A. Acceptable EIFS System Manufacturer: Dryvit Systems,
Inc.; One Energy Way, P.O. Box 1014, West Warwick RI
02893; ASD. Tel: (800) 556-7752 and (401) 822-4100.
B. Acceptable Substrate Manufacturer: Georgia Pacific
Corporation.
C. Acceptable Joint Sealer Manufacturer: Dow Corning Corp.
NOTE ** Delete one of the two paragraphs below; coordinate
with Division 1 requirements.
D. Requests for substitutions will be considered in
accordance with provisions of Section 01600.
E. Substitutions: Not permitted.
2.2 MATERIALS
A. Substrate: Silicone treated gypsum core board, surfaced
with inorganic glass mats and a gold color, alkali-
resistant coating; thickness of 1/2 inch and 5/8 inch, as
indicated; type X fire-resistant.
1. Provide Dens-Glass Gold by Georgia-Pacific
Corporation.
B. Air Barrier Components:
1. Polymer: High performance polymer based blend
material.
a. Provide DryShield ABA by Dryvit Systems, Inc.
2. Portland Cement: ASTM C 150, Type I, I-II, or II,
white or gray in color, fresh and free of lumps.
3. Grid Tape: Open weave pressure sensitive fiberglass
mesh available in rolls 4 inches wide by 100 yards
long.
a. Provide Dryvit Grid Tape.
4. Flashing Tape: High density polyethylene film backed
with a rubberized asphalt adhesive available in rolls
4 inches and 6 inches wide by 100 feet long.
a. Provide Dryvit Flashing Tape.
C. Adhesive Material:
1. Polymer: High performance polymer based blend
material.
a. Provide DryShield ABA by Dryvit Systems, Inc.
2. Portland Cement: ASTM C 150, Type I, I-II, or II,
white or gray in color, fresh and free of lumps.
D. I.S. Insulation Board: Aged, expanded polystyrene with a
nominal density of 1.0 lb per cubic foot, and meeting
current published specifications of Dryvit's Publication
DS131.
1. Minimum density for every board supplied for the work
shall be 0.95 pcf, not as an average.
2. Dimensions: 2 ft by 4 ft maximum, with minimum
thickness of 2 inches. Provide 45 degree factory cut
bevels at perimeter, as indicated in Infinity
Installation Details DS120.
3. Back Surface: Factory cut vertical grooves running
the width of the board and measuring 1/4 inch deep by
1 inch wide, positioned 12 inches on center.
E. I.S. Insulation Board Closure Blocks: Aged, expanded
polystyrene with a nominal density of 1.0 lb per cubic
foot, and meeting current published specifications of
Dryvit's Publication DS131.
1. Minimum density for every board supplied for the work
shall be 0.95 pcf, not as an average.
2. Dimensions: Minimum 6 inches wide.
F. Dryvit Starter Strip: Expanded polystyrene configured to
receive Dryvit Vent Track and Dryvit Track.
1. Dimensions: 2 inches by 6 inches by 48 inches.
2. Locations: Base of all walls, base of horizontal
compartments, head of windows, and other openings.
G. Dryvit Vent Assembly: Expanded polystyrene configured to
contain Dryvit Vent Material and receive Dryvit Vent
Track.
1. Locations: Base of all walls and base of horizontal
compartments.
2. Vent Material: Formed aggregate matrix capable of
draining water; 2 inches by 6 inches by 10 inches.
H. Dryvit Vent Track: J-shaped track complying with
ASTM D 1784 and ASTM C 1063 and containing a slot for
venting and drainage.
1. Locations: Base of all walls and base of horizontal
compartments.
I. Dryvit Track: Solid, J-shaped track complying with
ASTM D 1784 and ASTM C 1063.
1. Locations: Above Dryvit Starter Strip.
J. Reinforcing Mesh:
1. I.S. Reinforcing MeshJ:
a. Minimum weight: 5 oz per sq. yard.
b. Minimum tensile strength: 225 pounds/inch.
2. Panzer 20 Mesh:
a. Minimum weight: 20 oz per sq. yard.
b. Minimum tensile strength: 550 pounds/inch.
3. Corner Mesh:
a. Minimum weight: 7.2 oz per sq. yard.
b. Minimum tensile strength: 274 pounds/inch.
4. Detail(R) Mesh:
a. Minimum weight: 4.3 oz per sq. yard.
b. Minimum tensile strength: 150 pounds/inch.
K. I.S. Base Material:
1. Acrylic base material.
2. Portland Cement: ASTM C 150, Type I, I-II, or II,
white or gray in color, fresh and free of lumps.
L. Finish Material:
1. Elastomeric finish with quartz aggregate, mildewcide
chemistry, and dirt resistant technology:
a. Coarse Texture: Infinitex QP.
b. Rough Pebble Texture: Infinitex SP.
c. Fine Pebble-Like Texture: Infinitex SPF.
d. Smooth Texture: Infinitex ADB.
2. Specialty finish:
a. Blend of natural aggregates varying in size and
color.
1) Ameristone, multi-colored flamed granite
appearance.
2) Stone Mist, ceramically-colored quartz
aggregate.
M. Primer: A water-based, pigmented acrylic primer.
1. Provide Color Prime.
N. Coatings:
1. Non-textured, water based acrylic coating: Demandit
PMR.
O. Joint Sealer Materials:
1. Primer: Dow 1200 Primer.
2. Ultra-Low-Modulus Silicone Sealant: Dow Corning 790.
3. Medium Modulus Sealant: Dow Corning 791 or 795.
a. Application: Sealing between EIFS and aluminum
frames only.
P. Water: Clean and potable.
2.3 MIXES
A. Air Barrier: Mix DryShield ABA one-to-one by weight with
Portland cement.
B. Adhesive Material: Mix DryShield ABA one-to-one by
weight with Portland cement.
C. Base Material: Mix I.S. Base two-to-one by weight with
Portland cement.
2.4 MIXING
A. Perform all mixing with a clean mixer equivalent to
Goldblatt Jiffler Mixer No. 15311H7, powered by a 1/2
inch drill or equivalent, at 400-500 rpm.
PART 3 EXECUTION
3.1 EXAMINATION
A. Verification of Conditions:
1. Substrates are in proper condition to receive
Infinity.
NOTE ** Ensure that expansion joints are located and
detailed on drawings; consult manufacturer's
product data for recommended types and spacings.
NOTE **
NOTE ** Dryvit Systems, Inc. recommends a minimum 3/4 inch
wide joint; design and location is the
responsibility of the designer. Continuous
expansion joints for the Infinity system shall be
installed but not limited to the following
locations:
NOTE ** 1. Where expansion joints occur in the substrate.
NOTE ** 2. Where building expansion joints occur.
NOTE ** 3. When Infinity abuts a dissimilar material.
NOTE ** 4. At floor lines in wood frame construction.
NOTE ** 5. Where substrate materials change.
NOTE ** 6. At changes in roof line, building shape, or
structural system.
NOTE ** 7. At a maximum of 75 feet in long, continuous
elevations.
2. Expansion joints are located and sized as indicated
on drawings.
3. Products indicated to be installed in surfaces to
receive Infinity are installed in correct locations.
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. Protection: Mask surfaces of adjacent materials to
prevent damage to finishes.
B. Surface Preparation: Prepare surfaces to receive
Infinity in accordance with manufacturer's printed
installation instructions.
3.3 INSTALLATION
A. Comply with manufacturer's latest printed instructions
for installation of each system component.
B. Substrate: Install in accordance with Georgia-Pacific
Bulletin No. 94-2; Dens-Glass Gold Application Procedures
for Dryvit Infinity Series.
1. Examine installed substrate to verify that it meets
specified performance criteria and is clean, dry,
free of grease, oil, paint, and other foreign
materials.
2. Replace any areas of substrate not in compliance with
specified requirements or where gaps or damage to
surface exceed 3/8 inch in any direction.
C. Air Barrier:
1. Install pressure sensitive grid tape at all vertical
and horizontal joints, exposed edges at terminations,
and inside and outside corners of substrate.
2. Apply Dryshield ABA mixture to substrate, including
exposed edges, prior to installing I.S. insulation
board.
3. Cover all expansion joints with flashing tape.
D. Accessories:
1. Install Dryvit Starter Strip, Dryvit Vent Assembly,
and Dryvit Vent Track at the base of walls and the
base of horizontal compartments, in compliance with
manufacturer's typical details and printed
instructions.
2. Install I.S. Insulation Board Closure Blocks around
the perimeter of all openings and to close off
vertical compartments where indicated.
E. I.S. Insulation Board:
1. Apply insulation board to completed air barrier in
running bond pattern starting from base of wall, with
long edges oriented horizontally.
a. Begin in field of wall and work outward to
corners, ensuring alignment of vertical drainage
grooves.
b. Offset joints in insulation board from joints in
substrate by a minimum of 8 inches.
2. Install I.S. Insulation Board Closure Blocks at
corners in staggered and interlocked pattern, field
cutting adjacent I.S. insulation board as necessary
to achieve proper fit.
3. Precut insulation board to fit openings, corners, or
projections. Do not allow board edges to align with
corners of wall openings.
F. Base and Finish Coat Application: Comply with
manufacturer's detailed installation instructions.
1. Install double layer of reinforcing mesh at ground
floor and high traffic areas, as indicated on
drawings. In these areas, use mesh types specified
but not less than base layer of Panzer 15 and top
layer of I.S. Reinforcing Mesh.
2. Reinforce corners by double wrapping reinforcing mesh
or by using corner mesh.
3. Reinforce corners of openings using strips of Detail
Reinforcing Mesh laid at a 45 degree angle.
4. Cover terminations of Infinity System with continuous
metal coping, as shown in manufacturer's standard
details.
G. Joint Sealers: Install sealants in accordance with Dow
Corning Procedures for the installation of Dow Corning
Silicone Building Sealants with Dryvit Infinity System.
3.4 PROTECTION
A. Protect finishes from damage by subsequent construction
activities until Date of Substantial Completion.
B. Repair finishes damaged by subsequent construction
activities in accordance with manufacturer's printed
installation instructions; replace finish to extent of
nearest adjacent termination each way at areas where
repair to finish is judged unacceptable.
C. Architect will be sole judge of acceptability of repaired
finishes.
NOTE ** Complete the following suggested schedule if more
than one finish or color is required for project;
delete Article if not required.
3.5 SCHEDULES
A. Location: _______________.
1. Texture: ____________.
2. Color: ______________.
END OF SECTION