HomeMy WebLinkAbout07 17 00 Bentonite Waterproofing.docPEDCOR SQUARE; BUILDING 5
07 17 00 -
PEDCOR SQUARE Date 12.18.15 BENTONITE WATERPROOFING
PEDCOR SQUARE; BUILDING 5
SECTION 07 17 00 - BENTONITE WATERPROOFING
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. All of the Contract Documents, including General and Supplementary
Conditions, and Division 1 General requirements, apply to the work of this
section.
1.2 WORK SUMMARY
A. The work of this section includes, but is not limited to the furnishing and
installing the following materials, per project specifications and drawings, or as
directed by manufacturer:
1. Sodium bentonite geotextile sheet waterproofing membrane with all
applicable accessory products.
2. Associated prefabricated drainage composite and base drain
components.
1.3 RELATED SECTIONS
A. Other specification Sections which directly relate to the work of this section
include, but are not limited to, the following:
1. Division 2: Subsurface and Geotechnical Investigations.
2. Division 3: Water stops
3. Division 7: Joint Treatment and Sealants
4. Division 31: Earthwork, Excavation and Fill, Shoring.
5. Division 33: Foundation Drainage.
1.4 SYSTEM DESCRIPTION
A. Provide bentonite waterproofing system and prefabricated drainage composite
system to prevent the passage of liquid water and install without defects,
damage or failure. Waterproofing shall be two high strength geo-textiles
interlocked, encapsulating a minimum of 1.10 pounds per square foot of
granular sodium bentonite.
1.5 SUBMITTALS
A. General: Prepare and submit specified submittals in accordance with
"Conditions of the Contract" and Division 1 Submittals Sections.
B. Product Data: Submit manufacturer’s product data, with complete general and
specific installation instructions, recommendations, and limitations.
C. Product Samples: Submit representative samples for approval.
D. Material Certificates: Submit certificate(s) signed by manufacturer certifying
materials comply with specified performance characteristics and physical
requirements. Submit certification that waterproofing system and components,
drainage and protection materials are supplied by a single-source
manufacturer.
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E. Contractor Certificate: At time of bid, submit written certification that installer
has current Approved Applicator status with waterproofing material
manufacturer.
1.6 QUALITY ASSURANCE
A. Installer Qualifications: Installing company should have at least three (3) years
experience in work of the type required by this section, who can comply with
manufacturer's warranty requirements, and who is an Approved Applicator as
determined by waterproofing/drainage system manufacturer.
B. Manufacturer Qualifications: Waterproofing membranes and all accessory
products shall be provided by a single manufacturer with a minimum of 10
years experience in the direct production and sales of waterproofing systems.
Manufacturer shall be capable of providing field service representation during
construction, approving an acceptable installer, and recommending appropriate
installation methods.
C. Pre-Installation Conference: A pre-installation conference shall be held prior to
commencement of field installation to establish procedures to maintain required
working conditions and to coordinate this work with related and adjacent work.
Verify that final waterproofing and water stop details comply with waterproofing
manufacturer's current installation requirements and recommendations. Pre-
con meeting attendees should include representatives for the owner, architect,
inspection firm, general contractor, waterproofing contractor, concrete
contractor, excavating/backfill contractor, and mechanical and electrical
contractors if work penetrates the waterproofing.
D. Materials: Obtain waterproofing with accessory products and prefabricated
drainage materials from a single manufacturer to assure material compatibility.
E. Independent Inspection: Owner shall make all arrangements and payments for
an independent inspection service to monitor waterproofing material installation
compliance with the project contract documents and manufacturer’s published
literature and site specific details. Independent Inspection Firm shall be an
approved company participating with the waterproofing manufacturer’s Certified
Inspection Program. Inspection service shall produce reports and digital
photographs documenting each inspection. Reports shall be made available to
the Contractor, waterproofing installer, waterproofing material manufacturer, and
Architect. Inspections should include substrate examination, beginning of
waterproofing installation, periodic intervals, and final inspection prior to concrete
or backfill placement against the waterproofing.
F. Water Sample Test: Waterproofing contractor shall supply project site water
sample to waterproofing membrane manufacturer for analysis. Manufacturer
shall conduct test free of charge. Contractor is responsible for collection and
shipment of one liter of actual site water. Water should be shipped in
uncontaminated, sealed plastic. Also provide project name, city and state along
with return address to forward test results.
1.7 PRODUCT DELIVERY, STORAGE AND HANDLING
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A. Delivery and Handling: Deliver materials in factory sealed and labeled
packaging. Sequence deliveries to avoid delays, while minimizing on-site
storage. Handle and store following manufacturer's instructions,
recommendations and material safety data sheets. Protect from construction
operation related damage, as well as, damage from weather, excessive
temperatures and prolonged sunlight. Remove damaged material from site and
dispose of in accordance with applicable regulations.
B. Storage: Do not double-stack pallets during shipping or storage. Protect
waterproofing materials from moisture, excessive temperatures and sources of
ignition. Provide cover, top and all sides, for materials stored on-site, allowing
for adequate ventilation.
1.8 PROJECT CONDITIONS
A. Substrate Condition: Proceed with work only when substrate construction and
preparation work is complete and in condition to receive waterproofing.
B. Weather Conditions: Perform work only when existing and forecasted weather
conditions are within the guidelines established by the manufacturer of the
waterproofing materials. Do not apply waterproofing materials into standing
water or over ice and snow. The General Contractor shall maintain site
conditions to remove standing water from precipitation or ground water
seepage in a timely manner. Should bentonite materials be subjected to pre-
hydration as a result of prolonged immersion, inspection of the material and
written acceptance from manufacturer is required prior to concrete or backfill
placement.
1.9 WARRANTY
A. Waterproofing Warranty: Upon completion and acceptance of the work
required by this section, the waterproofing materials manufacturer will provide
a written five (5) year warranty, covering both materials and labor, to the
project owner. Issuance of Manufacturer's Warranty requires the following: (1)
System waterproofing products and drainage composite products shall have
been provided by a single manufacturer; (2) Installation of waterproofing
products and prefabricated drainage composite by Manufacturer's Approved
Applicator; (3) Installation inspected by Independent Inspection Firm per
Section 1.06E; (4) In Section 3 work, manufacturer’s water stop must be
installed in all applicable horizontal and vertical cold pour concrete construction
joints and around applicable penetrations. Manufacturer's warranty shall be
independent from any other warranties made by the Contractor under
requirements of the Contract Documents and may run concurrent with the
other warranties.
PART 2 - PRODUCTS
2.1 MANUFACTURER
A. Provide Voltex bentonite interlocking geo-textile waterproofing membranes and
applicable accessories as manufactured by Colloid Environmental
Technologies Company (CETCO), 1500 West Shure Drive, Arlington Heights,
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Illinois 60004-1440, USA. Phone: (847)392-5800; Fax: (847)506-6195; Web-
site: http://www.cetco.com., or approved equal.
2.2 MATERIALS
A. Sodium Bentonite:
1. Wyoming granular sodium bentonite with 90% passing through a
20-mesh sieve and 10% passing through a 200-mesh sieve.
B. Voltex Bentonite Geotextile Waterproofing:
1. Voclay Voltex: 4’ x 15’ roll of interlocking geo-textiles encapsulating a
minimum of 1.10 lbs. per square foot of contaminant resistant
granular sodium bentonite.
Performance properties:
PROPERTY TEST METHOD TYPICAL VALUE
Peel Adhesion to Concrete ASTM D 903 mod. 10 lbs. /in.
Hydrostatic Pressure
Resistance
ASTM D 5385
mod.
231 ft.
Permeability ASTM D 5084 <1 x 10-11 cm/sec.
Grab Tensile Strength ASTM D 4632 100 lbs.
Puncture Resistance ASTM D 4833 75 lbs.
Low Temperature Flexibility ASTM D 1970 Unaffected at -25°F
Geo-textile interlock Peal ASTM D 4632 15 lbs.
C. Accessory Waterproofing Products:
1. All accessory waterproofing materials shall be provided by the
bentonite waterproofing manufacturer or shall have manufacturer’s
written approval for substitution.
2. Trowel grade sodium bentonite compound used as detailing mastic
around penetrations, corner transitions and grade terminations.
3. 2” diameter x 2’ long, water soluble tube container filled with granular
sodium bentonite
4. 50 lbs. bag of granular Volclay sodium bentonite.
5. 2” wide butyl rubber sealant tape.
6. Termination Bar: Min. 1” wide aluminum bar with pre-punched holes on
12”centering for fastening.
7. Cementitious Wall Board: ½” thick cementitious board for protection of
waterproofing during the removal of metal soldier pile cap and top
lagging boards.
8. Performed EPDM tie-back cover or field fabricated 26 gauge
galvanized sheet metal tie-back covers.
9. Link-Seal modular seal for sealing pipe penetration.
D. Base and Sheet Drainage Composite:
1. Drainage composite shall be used where specified to promote positive
drainage. Use base drain accessory connectors and outlets as
required.
2. 4-ft by 52-ft roll of a three-dimensional polystyrene drainage core with
a non-woven geo-textile adhered to one side to allow water passage
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while restricting soil particles. Composite includes a thin polyethylene
sheet on the back of the drainage core.
a. Compressive Strength, 15,000psf;
b. Water Flow Rate, 20gpm/ft;
c. Thickness, 7/16”.
3. Base Drain – 1” thick x 12” high base drain composite designed to
collect water from sheet composite drainage and then discharge the
water to proper sump system or gravity to daylight.
a. Compressive Strength, 10,000psf.
b. Water Flow rate, 97gpm/ft.
c. Thickness, 1”.
PART 3 – EXECUTION
3.1 GENERAL
A. Comply with contract documents and manufacturer's product data, including
product application and installation instructions.
3.2 SUBSTRATE INSPECTION AND CONDITIONS
A. General:
1. The installer, with the Owner’s Independent Inspector present, shall
examine conditions of substrates and other conditions under which this
section work is to be performed and notify the contractor, in writing, of
circumstances detrimental to the proper completion of the work. Do
not proceed with work until unsatisfactory conditions are corrected and
are acceptable for compliance with manufacturer's warranty
requirements. General substrate conditions acceptable for the
waterproofing installation are listed below. For conditions not
covered in this Section, contact the waterproofing manufacturer for
guidance.
B. Soil Substrates:
1. Site conditions allowing, applications do not require a mud-working
slab. Grade substrates should consist of well-leveled soils without
voids and debris, and compacted to a minimum of 85% Modified
Proctor density. If substrate consists of large aggregate, place a
high-strength geo-textile layer over the aggregate and then
provide several inches of compacted soil or sand for uniform support
and containment of waterproofing sheets
C. Concrete:
1. Cast-in-place concrete to receive waterproofing shall be of sound
structural grade with a smooth finish, free of debris, oil, grease,
laitance, dirt, dust, or other foreign matter which will impair the
performance of the waterproofing and drainage system and which do
not comply with manufacturer's warranty
requirements. Manufacturer recommends gaining instructions from
project structural engineer regarding any site specific concrete curing
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time requirement. Do not apply water proofing over lightweight
insulating concrete.
a. Form fins, ridges, and other protrusions should be level and
smooth with monolithic concrete surface. Honeycombing,
aggregate pockets, tie-rod holes and other voids should be
completely filled with non-shrink cementitious grout and level
with monolithic concrete surface.
b. All expansion joints should receive applicable expansion joint
sealant product manufactured by others prior to the installation
of the waterproofing System. Expansion joint material is the
primary seal at the expansion joint and the expansion joint
material manufacturer is responsible for water tightness of
the joint.
c. Related work to be completed under Division 3. Water stop
material shall be installed in all applicable vertical and
horizontal concrete construction cold pour joints and around
applicable penetrations and structural members.
3.3 SURFACE PREPARATION
A. Remove dirt, debris, oil, grease, cement laitance, or other foreign matter which
will impair or negatively affect the performance of the waterproofing and
drainage system.
B. Protect adjacent work areas and finish surfaces from damage or contamination
from waterproofing products during installation operations.
3.4 GENERAL INSTALLATION GUIDELINES
A. Follow manufacturer’s guidelines.
3.5 SLAB / BACKFILLED WALL FOOTING EDGE TRANSITION COURSE
A. Provide a minimum of 6” overlap between under slab and vertical wall
waterproofing. Secure overlap with washer-head fasteners a minimum of 24”
on center and apply membrane to the overlap edge.
B. At the slab/footing form edge, secure sheet horizontally oriented to the top
inside edge of the exterior slab/footing form with the sheet conforming to the
interior form sides and then extending out onto the horizontal slab substrate a
minimum 12". Overlap edges of adjacent sheets a minimum 4" and secure to
prevent sheet movement during construction or concrete placement.
3.6 BACKFILLED CAST-IN-PLACE CONCRETE WALLS – WATERPROOFING
A. Place drainage tubes along the wall/footing intersection with ends “butted”
tightly together to form a continuous installation.
B. Trowel 3/4" thick, continuous caulk sealant fillet at all inside wall corner
transitions. Trowels caulk sealant to form-tie pockets/patches and any slightly
irregular honeycomb areas.
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C. Starting at the base of the wall, install waterproofing sheet horizontally covering
drainage tubes and extending onto the footing a minimum of 6”.
D. After the bottom horizontal course, waterproofing sheets can be installed either
vertically or horizontally oriented.
E. Cut waterproofing to fit snugly around penetrations.
F. Terminate waterproofing at grade with metal termination bar fastened 12” on
center. Cover top edge of waterproofing with 1/2” thick, 2” wide layer of caulk
sealant.
G. Inspect finished waterproofing installation and repair any damaged material
prior to backfill placement. Assure that waterproofing is not displaced during
backfill placement or soil compaction.
3.7 INSULATION
A. Always apply waterproofing directly to properly prepared structural concrete
substrates. Insulation, if used, should be applied over the waterproofing and
drainage. Do not apply waterproofing over lightweight insulating concrete.
3.8 BACKFILL EXCAVATED CAST-IN-PLACE CONCRETE WALLS
A. Closely coordinate installation with Backfill conducted under Division 31 work.
Care should be used during backfill operation to avoid damage to the
waterproofing system. Follow generally accepted practices for backfilling and
compaction. Backfill should be added in 6" to 12” lifts and compacted to a
minimum 85% Modified Proctor density. If gravel backfill, specify angular
aggregate <3/4” with fines.
3.9 CLEAN UP
A. In areas where adjacent finished surfaces are soiled by work of this Section,
consult manufacturer of surfaces for cleaning advice and conform to their
recommendations and instructions. Remove all tools, equipment and remaining
product on-site. Dispose of section work debris and damaged product following
all applicable regulations.
END OF SECTION 07 17 00