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SECTION 07 17 00
BENTONITE CLAY WATERPROOFING
 
 
Copyright 2016 - 2017 ARCAT, Inc. - All rights reserved
** NOTE TO SPECIFIER ** MAPEI Americas and MAPEI Inc. Canada; bentonite clay waterproofing,
This section is based on the products of MAPEI Americas, which is located at:
1144 E. Newport Center Rd.
Deerfield Beach, FL 33442
Toll Free Tel: 800-42-MAPEI
Tel: 888-365-0614
Fax: 954-246-8801
Email: hhays@mapei.com
Web:www.mapei.com/US-EN
This section is based on the products of MAPEI Inc. Canada, which is located at:
2900 Francis-Hughes
Laval, PQ, Canada H7L3J5
Tel: 450-662-1212
Fax: 450-662-0444
Email: hhays@mapei.com
Web: www.mapei.com/CA-EN
MAPEI Americas; Bentonite waterproofing Geosynthetic Clay Liners can be used on both positive side and blind side for both vertical and horizontal structural foundation walls and under slab on grade. Applicable for below-grade foundation walls, retaining walls, elevator pits, tunnels, earth covered structures, under slabs, lagging walls, secant piles, and sheet piles. Do not use when membrane exposed to continuous sunlight. Not recommended for pond and tank liner applications.
 
PART 1 GENERAL
 
1.1
SECTION INCLUDES
A.
Waterproofing system including:
1.
Verification of waterstop in construction joints.
 
** NOTE TO SPECIFIER ** Although waterstop is specified in 03 15 00, it is a critical prerequisite for waterproof sheet membrane warranty and performance.
 
2.
Substrate preparation repair mortars, cants/fillet, crack filler and joint treatment.
3.
Waterproofing shall be composed of granular sodium bentonite clay at a rate of 1.13 lbs. per sq. ft. (5.5 kg per m2) sandwiched between two polypropylene geotextile fabrics - a nonwoven and a woven fabric. The nonwoven fabric is needle-punched through to the woven fabric, with thousands of fibers mechanically locking the sodium bentonite clay in place.
4.
Waterproofing for contaminated sites shall be composed of contaminant resistant granular sodium bentonite clay and polymers at a rate of 1.1 lbs. per sq. ft. (5.3 kg per m2) sandwiched between two polypropylene geotextile fabrics - a nonwoven and a woven fabric. The nonwoven fabric is needle-punched through to the woven fabric, with thousands of fibers mechanically locking the sodium bentonite clay in place.
5.
Accessory components fasteners and washers, granules, mastics, termination bars, waterstop, tie-back covers, expansion joint materials.
6.
Pre-fabricated protection and drainage composite sheet.
7.
Pre-fabricated drainage base.
8.
Drainage accessories.
9.
Rigid insulation board.
10.
Testing and inspection.
1.2
RELATED SECTIONS
 
** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
 
A.
Section 31 20 00 - Earth Moving.
B.
Section 31 23 23.13 - Backfill.
C.
Section 44 41 36 - Prefabricated Spill Containment Berms.
D.
Section 03 30 00 - Cast-in-Place Concrete.
E.
Section 04 20 00 - Unit Masonry.
F.
Section 07 10 00 - Dampproofing and Waterproofing.
G.
Section 07 60 00 - Flashing and Sheet Metal.
H.
Section - .
1.3
REFERENCES
 
** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
 
A.
ASTM International (ASTM):
1.
ASTM D5261 - Standard Test Method for Measuring Mass per Unit Area of Geotextile
2.
ASTM D5993 - Standard Test Method for Measuring Mass Per Unit of Geosynthetic Clay Liners
3.
ASTM D5887 - Standard Test Methods for Measurement of Index Flux Through Saturated Geosynthetic Clay Liner Specimens Using a Flexible Wall Permeameter
4.
ASTM D5890 - Standard Test Method for Swell Index of Clay Mineral Component of Geosynthetic Clay Liners
5.
ASTM D6768 - Standard Test Method for Tensile Strength of Geosynthetic Clay Liners
6.
ASTM D4632 - Standard Test Method for Grab Breaking Load and Elongation of Geotextiles
7.
ASTM D6241 - Standard Test Method for Static Puncture Strength of Geotextiles and Geotextile-Related Products Using a 50-mm Probe
8.
ASTM D6496 - Standard Test Method for Determining Average Bonding Peel Strength Between Top and Bottom Layers of Needle-Punched Geosynthetic Clay Liners
9.
ASTM D903 - Standard Test Method for Peel Adhesion of Waterproofing to Concrete
10.
ASTM D4491 - Test Methods for Water Permeability of Geotextiles by Permittivity
11.
ASTM D4716 - Test Method for Determining the (In-Plane) Flow Rate per Unit Width and Hydraulic Transmissivity of a Geosynthetic Using a Constant Head
12.
ASTM D4833 - Test Method for Index Puncture Resistance of Geotextiles, Geomembranes, and Related Products
13.
ASTM D5385 - Standard Test Method for Hydrostatic Pressure Resistance of Waterproofing Membranes
1.4
SUBMITTALS
A.
Submit under provisions of Section 01 30 00 - Administrative Requirements.
B.
Product Data: Manufacturer's data sheets on each product to be used, including:
1.
Preparation instructions and recommendations.
2.
Storage and handling requirements and recommendations.
3.
Installation methods.
C.
Samples: Representative samples of the following:
1.
Geosynthetic Clay Liner: 2 inches x 3 inches (5 x 7.6 cm).
2.
Waterstop for Concrete Joints: 3 inches (7.6 cm).
3.
Drainage Composite Sheet: 4 inches x 4 inches (10 x 10 cm).
4.
Drainage Composite Base Drain: 6 inches (15.2 cm).
D.
Waterproofing Manufacturer's Sample Warranty
 
** NOTE TO SPECIFIER ** Delete if not required.
 
E.
Sustainability Submittals: Provide VOC content of all components.
F.
Material Certificates: Certification that waterproofing system and components, drainage and protection materials comply with specified performance characteristics and physical requirements and are supplied by single-source manufacturer.
G.
Contractor Certificate: Approved Applicator status with waterproofing material Manufacturer.
H.
Site Condition Reports: Indicate ambient and substrate surface temperatures, relative humidity and dew point, wind velocity and precipitation during application.
1.5
QUALITY ASSURANCE
A.
Installer Qualifications:
1.
Have minimum three years of experience in type of work required by this section.
2.
Comply with manufacturer's warranty requirements.
3.
Be approved applicator as determined by waterproofing/drainage system manufacturer.
4.
Attend necessary job meetings. Provide competent and full time supervision, experienced mechanics, all materials, tools, and equipment necessary to complete, in acceptable manner, the drainage composite installation.
B.
Manufacturer Qualifications:
1.
Capable to supply all components of complete prefabricated drainage composite system.
2.
Minimum of five years of experience in manufacturing of prefabricated drainage composite systems.
3.
Capable of providing product and technical support representation during construction, approving an acceptable applicator and suggesting appropriate installation methods.
4.
ISO 9001-2000 Certified Organization.
5.
ISO 14001-2004 Certified Environmental Management Organization.
 
** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or quality warrant taking such a precaution. The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project.
 
C.
Mock-up:
1.
Area designated by Architect will be considered mock-up.
2.
Prepare and clean a minimum 4 feet x 4 feet (1.2 x 1.2 m) area of each substrate material type and project condition.
3.
Demonstrate methods, products and tools to prepare acceptable substrate meeting membrane manufacturer's installation instructions
4.
Install waterproofing system with drainage composite and accessories.
D.
Independent Inspection: Owner provided independent inspection service to monitor waterproofing material installation. Inspection to include:
1.
Compliance with project contract documents.
2.
Compliance with manufacturer's published literature and site specific details.
3.
Produce reports and digital photographs documenting each inspection. Make reports available in timely manner to Contractor, Waterproofing Installer, Waterproofing Material Manufacturer and Architect.
4.
Substrate examination at beginning of waterproofing installation, at periodic intervals during waterproofing installation and at final inspection.
5.
Authorization to proceed prior to concrete or backfill placement against the waterproofing.
E.
Water Sample Test: Ground water analysis is required on projects that have ground water present to test for contamination and compatibility with waterproofing membrane.
1.
Waterproofing contractor is responsible for collection and shipment of 64-fluid ounces (2-liters) of actual site ground water to manufacturer. Water shall be shipped in uncontaminated, sealed plastic container to: MAPEI, 1144 E Newport Center Drive, Deerfield Beach, FL 33442, Attn: Technical Services - Water Sample Test.
2.
Water sample shall be taken from the lowest part of the site in the water table or from dewatering wells and not surface water from rain.
3.
Waterproofing contractor shall provide project name, city and state along with their company information (contact person, address, phone number and email) so that results can be forwarded.
4.
Manufacturer shall test submitted ground water sample for contamination and compatibility with waterproofing membrane and provide waterproofing contractor written results and formulation recommendation.
5.
Waterproofing contractor shall submit to architect a letter of compatibility recommending which formulation to use.
1.6
PRE-INSTALLATION MEETINGS
A.
Pre-Installation Conference:
1.
Establish procedures to maintain required working conditions.
2.
Coordinate this work with related and adjacent work and trades.
3.
Verify dewatering plan for projects in the water table.
4.
Review special project details.
5.
Verify with Architect and Contractor that waterproofing and waterstop details comply with waterproofing manufacturer's current installation requirements and recommendations.
6.
Attendees shall include representatives for Owner, Architect, Quality Assurance, General Contractor, Waterproofing Contractor, Waterproofing Manufacturer, Concrete Contractor, Excavating/backfill Contractor and MEP contractors if MEP work penetrates waterproofing.
7.
Give minimum five 5 days notice to Owner, General Contractor and Manufacturer prior to commencing work. Immediately notify parties of changes in work schedule.
1.7
DELIVERY, STORAGE, AND HANDLING
A.
Delivery: Deliver materials in factory sealed and labeled packaging. Sequence material deliveries to avoid work delays and minimize on-site storage. Follow manufacturer's instructions, recommendations and safety data sheets for material handling and storage.
B.
Storage: Do not double-stack pallets during shipping or storage. Protect pre-fabricated drainage composite materials from moisture, excessive temperatures and sources of ignition. Cover material top and all sides while stored on-site, allowing for adequate ventilation. Protect material from construction operation, weather, excessive temperatures and prolonged sunlight.
C.
Store and manage hazardous materials in accordance with Contract Requirements and Division 1. Remove damaged material from site and dispose of in accordance with applicable regulations.
1.8
PROJECT CONDITIONS
A.
Substrate Condition: Proceed with work only when substrate construction and preparation work is complete and is acceptable for waterproofing application. All structural, plumbing, electrical, and mechanical work to be under or penetrating through the waterproofing to be completely secured in proper position prior to waterproofing system installation. Substrate preparation to comply with waterproofing manufacturer's guidelines.
B.
Submit written report to General Contractor of substrate surface defects and work prepared by other Trades which adversely affect quality or dimensions of waterproofing work.
C.
Weather Conditions: Perform work only when existing and forecasted weather conditions are within Manufacturer's guidelines including but not limited to:
1.
Do not apply waterproofing materials in areas of standing or active water; or over snow, ice or frost.
2.
Timely remove standing water caused by precipitation or ground water seepage to maintain acceptable site conditions.
D.
Schedule work so membrane will not be exposed for longer than recommended by Manufacturer.
1.9
SEQUENCING
A.
Ensure that products of this section are supplied to affected trades in time to prevent interruption of construction progress.
1.10
WARRANTY
A.
Waterproofing System Warranty: Waterproofing Manufacturer to provide sample of warranty, including waterproofing system requirements. Issuance of Manufacturer's Waterproofing Warranty requires the following:
 
** NOTE TO SPECIFIER ** Delete warranty period not required.
 
1.
Warranty Period: Five years.
2.
Warranty Period: Ten years.
3.
Warranty Period: Fifteen years.
4.
Waterproofing System products and drainage composite products provided by single manufacturer.
5.
Installation of waterproofing products, prefabricated drainage composite and all appropriate system accessories are installed by a Manufacturer's Approved Applicator in full accordance with manufacturer's recommendations, installation instructions, specifications and details.
6.
Concrete Accessories Waterstop installed in concrete cold construction joints, formed construction joints, isolation joints and penetrations is required by Sheet Membrane Waterstop Warranty
 
** NOTE TO SPECIFIER ** Verify that Spec Section 03 15 00 includes Waterstop required for Sheet Waterproofing Warranty to be in full effect.
 
PART 2 PRODUCTS
 
2.1
MANUFACTURERS
A.
Acceptable Manufacturer: MAPEI Americas, 1144 E. Newport Center Rd., Deerfield Beach, FL 33442; ASD. Toll Free Tel: 800-42-MAPEI; Tel: 888-365-0614; Fax: 954-246-8801; Email: hhayes@mapei.com; Web: www.mapei.com/US-EN
B.
Acceptable Manufacturer: MAPEI Inc. Canada, 2900 Francis-Hughes, Laval, PQ, Canada H7L3J5; ASD. Tel: 450-662-1212; Fax: 450-662-0444; Email: hhayes@mapei.com; Web: www.mapei.com/CA-EN.
C.
Requests for substitutions will be considered in accordance with provisions of Section 01 60 00 - Product Requirements.
 
** NOTE TO SPECIFIER ** Delete paragraph above or below; coordinate with Division 1 requirements.
 
D.
Substitutions: Not permitted.
 
** NOTE TO SPECIFIER ** Delete if not required.
 
2.2
GEOSYNTHETIC CLAY LINER BENTONITE WATERPROOFING MEMBRANE
 
** NOTE TO SPECIFIER ** Delete membrane type not required.
 
A.
MAPEI Mapeproof HW Membrane: 3 feet-7 inches x 16 feet-5 inches (1.09 x 5.0 m) roll is a 1/4 inch (6 mm) thick GCL Bentonite Waterproofing consisting of granular sodium bentonite clay at a rate of 1.13 lbs. per sq. ft. (5.5 kg per sq.m) encapsulated between two polypropylene geotextile fabrics - a nonwoven and a woven fabric. The nonwoven fabric is needle-punched through to the woven fabric, with thousands of fibers mechanically locking the sodium bentonite clay in place.
B.
MAPEI Mapeproof SW Membrane: 3 feet-7 inches x 16 feet-5 inches (1.09 x 5.0 m) roll is a 1/4 inch (6 mm) thick GCL Bentonite Waterproofing consisting of contaminant resistant granular sodium bentonite clay and polymers at a rate of 1.1 lbs. per sq. ft. (5.3 kg per m2) encapsulated between two polypropylene geotextile fabrics - a nonwoven and a woven fabric. The nonwoven fabric is needle-punched through to the woven fabric, with thousands of fibers mechanically locking the sodium bentonite clay in place.
 
** NOTE TO SPECIFIER ** Delete if not required.
 
2.3
BENTONITE CLAY - GCL
A.
Performance Properties:
1.
Thickness - ASTM D5199: 1/4 inch (6 mm).
2.
Mass per unit area, nonwoven ASTM D5261: 5.9 U.S. oz. per sq. yd. (200 g per sqm).
3.
Mass per unit area, woven ASTM D5261: 3.2 U.S. oz. per sq. yd. (110 g per sqm).
4.
Bentonite at 12% moisture - ASTM 5993: 1.13 lbs. per sq. ft. (5.5 kg per sqm).
5.
Bentonite at 0% moisture - ASTM 5993: 1.00 lbs. per sq. ft. (4.9 kg per sqm).
6.
Swell Index - ASTM D5890: greater than 27 ml/2g.
7.
Hydraulic conductivity - ASTM D5887: 1 x 10-9power cm/sec.
8.
Index flux - ASTM D5887: 2 x 10-9power- cu.m/sq.m/s max.
9.
Tensile strength (MD/CMD) - ASTM D6768: 80/80 lbf/ft. (14.0/14.0 kN/m).
10.
Grab tensile strength - ASTM D4632: 135 lbf (600 N).
11.
Static puncture strength - ASTM D6241: 540 lbf (2.4 kN).
12.
Peel strength (MDsq) - ASTM D6496: 3.6 lbf/in. (625 N/m).
13.
Peel adhesion to concrete - ASTM D903: 17.7 lbf/in. (3.1 kN/m).
14.
Hydrostatic head - ASTM D5385: 231 ft. (70.4 m) of water.
 
** NOTE TO SPECIFIER ** Typically retain all accessories.
 
2.4
WATERPROOFING ACCESSORIES
A.
Concrete Repair Mortars & Coating:
1.
MAPEI Planitop X or XS for vertical repair: One-component, fast-setting, vertical and overhead repair mortar to be shrinkage-compensated, fiber-reinforced, polymer-modified and containing a corrosion inhibitor. Mix with MAPEI Planicrete AC Acrylic Latex Admixture diluted with water.
2.
MAPEI Planiseal 88 for surface preparation: One-component, polymer-modified, cementitious coating.
3.
MAPEI Mapecem Quickpatch mixed with MAPEI Planicrete UA additive for horizontal repair.
B.
Granules: MAPEI Mapeproof Granules. Bag of loose granular sodium bentonite clay.
C.
Mastics/Sealants: MAPEI Mapeproof Sealant. Trowel grade of bentonite detailing mastic.
D.
Flexible Waterproofing Tape for Movement Joints: MAPEI Mapeband TPE 170 and 325. Highly durable and flexible band tape used to waterproof expansion and other dynamic joints subject to movement of up to 2 inches (5 cm) for Mapeband TPE 170 and up to 4 inches (10 cm) for Mapeband TPE 325. Anchor with MAPEI Planibond AE high-strength, two-part, non-sag, epoxy anchoring gel.
E.
Exposed Waterproofing: MAPEI Planiseal 88 a one-component, polymer-modified, cementitious damp-proofing coating. Mix with MAPEI Planicrete AC diluted with water.
F.
Termination Bar: Min. 1/8 inch (3 mm) thick by 1 inch (2.5 cm) wide stainless steel or aluminum termination bar with pre-punched holes punched 6 inches (15.24 cm) on center for fastening.
 
** NOTE TO SPECIFIER ** Coordinate with Section - Flashing and Sheet Metal.
 
G.
Fasteners: Provide fasteners and 1 inch washers for membrane and termination bar which is compatible with the substrate.
H.
Waterstop: MAPEI Idrostop 25 hydrophilic expandable, pre-formed, flexible rubber strip for watertight construction.
 
** NOTE TO SPECIFIER ** Coordinate with Section - Concrete Accessories.
 
I.
Waterstop Adhesive: An MS-Polymer-Based Adhesive supplied in cartridges used for the attachment of MAPEI Idrostop 25 to the substrate.
J.
Tie-Back Covers: Fabricated metal tie-back cover in accordance with manufacturer's detail for specific project conditions.
 
** NOTE TO SPECIFIER ** Delete if not required.
 
2.5
PROTECTION AND DRAINAGE COMPOSITE SHEET - PREFABRICATED
 
** NOTE TO SPECIFIER ** Delete Mapedrain types not required.
 
A.
General: MAPEI Mapedrain prefabricated drainage composite sheet to promote positive drainage. High-Strength, High-Flow, Prefabricated Drainage Composite with Filter Fabric. Three-dimensional polypropylene drainage core with geotextile adhered to one side to allow water passage while restricting soil particles.
B.
MAPEI Mapedrain 30 for horizontal applications with high compressive strength and flow rates.
1.
Woven filter fabric allows concrete to be poured directly on top of the drainage composite.
2.
Compressive Strength per ASTM D1621: 21,000 psf (1005 kN/sqm).
3.
Flow Rate per ASTM D4491: 60 gal/min/sqft (2460 L/min/sqm).
4.
Flow (hydraulic gradient = 1) per ASTM D4716: 23 g/min/ft (286 L/min/m).
5.
Core Thickness 0.40 inch (10.16 mm).
C.
MAPEI Mapedrain 50 for horizontal applications with ultimate compressive strength and flow rates.
1.
Woven filter fabric allows concrete to be poured directly on top of the drainage composite
2.
Compressive Strength: ASTM D1621 - 33,000 psf (1580 kN/sqm).
3.
Flow Rate per ASTM D4491: 60 gal/min/sqft (2460 L/min/sqm).
4.
Flow (hydraulic gradient = 1) per ASTM D4716: 24 g/min/ft (298 L/min/m).
5.
Core Thickness 0.40 inch (10.16 mm).
D.
MAPEI Mapedrain 20 for vertical applications with high compressive strength and flow rates.
1.
Geotextile fabric non-woven.
2.
Compressive strength 15,000 psf (718 kN/sqm).
3.
Flow Rate per ASTM D4491: 140 gal/min/sqft (5704 L/min/sqm).
4.
Flow (hydraulic gradient = 1) per ASTM D4716: 21 g/min/ft (260 L/min/m).
5.
Core Thickness 0.40 inch (10.16 mm).
E.
MAPEI Mapedrain 25 for vertical applications with high compressive strength and flow rates. Has backer film to prevent potential "die cutting" of a waterproofing membrane installed behind drainage composite.
1.
Geotextile fabric non-woven.
2.
Compressive strength 15,000 psf (718 kN/sqm).
3.
Flow Rate per ASTM D4491: 140 gal/min/sqft (5704 L/min/sqm).
4.
Flow (hydraulic gradient = 1) per ASTM D4716: 21 g/min/ft (260 L/min/m).
5.
Core Thickness 0.40 inch (10.16 mm).
F.
MAPEI Mapedrain 40 for vertical and horizontal applications with high compressive strength and flow rates.
1.
Geotextile fabric non-woven.
2.
Compressive strength 21,000 psf (1005 kN/sqm).
3.
Flow Rate per ASTM D4491: 95 gal/min/sqft (3870 L/min/sqm).
4.
Flow (hydraulic gradient = 1) per ASTM D4716: 23 g/min/ft (286 L/min/m).
5.
Core Thickness 0.40 inch (10.16 mm).
 
** NOTE TO SPECIFIER ** Delete if not required.
 
2.6
DRAINAGE COMPOSITE BASE DRAIN - PREFABRICATED
A.
MAPEI Mapedrain TD Drainage Composite to promote positive drainage.
B.
Mapedrain TD: 1 inch (2.5 cm) thick x 12 inches (30 cm) by 165 feet-0 inch (50.3 m) roll base drain composite designed to collect water from sheet composite drainage and then discharge the water to proper sump system or gravity to daylight.
1.
Compressive Strength: 9,500 psf (455 kN/sqm).
2.
Water Flow Rate, 47 gpm/ft width (639 Lpm/m).
3.
Thickness, 1 inch (2.5 cm).
4.
MAPEI Base drain accessory connectors and outlets as required.
 
** NOTE TO SPECIFIER ** Delete if not required.
 
2.7
BOARD INSULATION
A.
Extruded-polystyrene board insulation complying with ASTM C 578, Type IV, 25 psi (173 kPa) minimum compressive strength.
 
** NOTE TO SPECIFIER ** EXECUTION contains work sections pertaining to both blindside (zero-lot line) construction and backfilled foundation wall construction. Therefore, PART 3 should be edited to only include work sections specific to the job site conditions required on the project.
 
PART 3 EXECUTION
 
3.1
SUBSTRATE INSPECTION AND CONDITIONS
A.
Examine conditions of substrates and other conditions affecting work of this section with waterproofing Installer, General Contractor and Owner's Independent Inspector present. Notify General Contractor, in writing, of defects in substrate preventing installation of waterproofing. Do not proceed with work until defects in substrate are corrected and acceptable for waterproofing installation and comply with manufacturer's recommendations.
B.
Substrates to receive waterproofing shall be clean, dry and free of voids, protrusions and surface irregularities.
C.
Related work: Verify Waterstop is installed in vertical and horizontal concrete construction cold pour joints and around penetrations, structural members, and tie-rod form holes that extend through the wall.
D.
Prepare substrate surfaces to accept waterproofing system per requirements of membrane Manufacturer and as directed by Architect.
E.
Apply waterproof membrane only in dry weather.
3.2
PREPARATION
A.
Remove contaminants such as dirt, debris, oil, grease, wax, cement laitance or other foreign matter which will impair or negatively affect performance of waterproofing and drainage system.
B.
Protect adjacent work areas and finish surfaces not receiving waterproofing from damage or contamination from waterproofing products spillage and overspray during installation operations.
C.
Form fins, ridges, ponding ridges and other protrusions shall be level and smooth with concrete surface.
D.
Honeycombing, aggregate pockets, tie-rod holes and other voids shall be completely filled with non-shrink cementitious grout and level with adjacent concrete surface.
E.
Working Mud Slab: Working concrete mud slabs shall have a float finish providing a flat surface; without sharp angular depressions, voids or raised features.
F.
Compacted Soil: Sub-grade shall be compacted to a minimum Modified Proctor compaction of 85% or greater as specified by civil/geotechnical engineer. The finished sub-grade surface shall be well-leveled, uniform, and free of debris, standing water, ice or snow.
G.
Compacted Gravel Base: Aggregate sub-grades shall consist of 3/4 inch (19 mm) stone or smaller and be mechanically compacted flat, free from any protruding sharp edges, standing water, ice or snow.
H.
Wood Lagging Shoring: Wood lagging shoring shall extend to the lowest level of the waterproofing installation with any voids or cavities on the exterior side of the lagging timbers filled with compacted soil, gravel or cementitious grout. Interior building side surface of lagging boards shall be flat, smooth and tight together with gaps less than 1 inch (25 mm). Gaps in excess of 1 inch shall be filled with cementitious grout, wood, extruded polystyrene (20 psi min.) or polyurethane spray foam. Do not use plywood or other surface treatment over large lagging gaps that leave the cavity void. In areas where lagging gaps are 2-1/2 inches (63 mm) or less, Mapedrain drainage composite shall be installed over lagging to provide uniform surface to mount the waterproofing without the requirement of filling gaps. Mapedrain and Mapedrain TD base drain system shall be connected to an operative water discharge system or piped to daylight. All lagging board nails and other mechanical projections shall be removed or pounded flush. Install a protection material over all soldier piles with raised lagging hanger bolts, form tie rods, or other irregular surface; protection material shall extend a minimum 6 inches (150 mm) to both sides of the steel piling.
I.
Secant Piles or Cut Rock Face Shoring: Interior secant piles and cut rock shall be flat and smooth without irregular surface conditions, voids and sharp transitions that would leave a void space to the outside of the drainage and waterproofing installation. Irregular rock, void pockets, cracks and sharp concave transitions shall be completely filled or smoothed with cementitious grout, shotcrete or other approved solid material.
J.
Structural Concrete Substrate: Structural concrete to be waterproofed shall be properly placed and consolidated. 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. Mapeproof can be installed on green structural concrete as soon as the forms are removed provided the contractor has written approval. Do not apply Mapeproof waterproofing directly over CMU, lightweight insulating concrete or insulating concrete forms.
K.
Under Concrete Slab on Grade: Reinforced concrete slab(s) on compacted grade shall be a minimum of 4 inches (100 mm) thick. Reinforced structural slabs shall be a minimum of 6 inches (150 mm) thick when placed on a working mud slab. When hydrostatic conditions exist, install Mapeproof under all footings, grade beams and elevator pits.
3.3
GENERAL INSTALLATION GUIDELINES
A.
Comply with contract documents and manufacturer's product data, including product application and installation instructions.
B.
Always install membrane with the white non-woven geotextile side facing the installer, with the black woven geotextile side against the substrate.
C.
Overlap membrane edges a minimum 4 inches (100 mm) for side and end laps.
D.
Fasten membrane to substrate with fasteners compatible with the substrate and 1 inch washers.
E.
For tunnels and structures with earth covered roofs, install a 1/8 inch (3 mm) thick layer of granules to the top of tunnels and earth-covered roofs prior to the main waterproofing material course. Install membrane with the white non-woven geotextile side outward, away from the concrete and facing the installer with the black geotextile against the concrete substrate.
F.
Expansion Joints: Sodium Bentonite Clay waterproofing membranes are not expansion joint filler or sealant, but may be used as an expansion joint cover over a properly installed expansion joint material placed during substrate preparation. To use membrane as an expansion joint cover, trowel 1/8 inch (3 mm) thick, 6 inches (150 mm) wide layer of bentonite mastic or sealant centered over installed mechanical expansion joint by others. Install a 24 inches (60 cm) wide strip of membrane centered over the expansion joint. Then install the main waterproofing membrane course.
G.
Related work to be completed under Division 3. Idrostop 25 Waterstop shall be installed in all concrete joints, around applicable slab penetrations and structural members using an MS-polymer-based adhesive to adhere it to the substrate. Refer to Idrostop 25 Waterstop Technical Data Sheet for further installation procedures and guidelines.
H.
Always apply waterproofing membrane directly to properly prepared structural concrete substrates.
I.
Insulation, if used, shall be installed to the exterior of the waterproofing and to the inside of Mapedrain.
J.
Do not apply Mapeproof HW/SW waterproofing over lightweight insulating concrete or CMU.
K.
Terminate membrane 4 inches to 6 inches below finished grade with metal termination bar and Mapeproof Sealant.
L.
Always inspect finished Mapeproof installation and repair any damaged material prior to backfill or concrete placement.
M.
Mapedrain drainage composite installation:
1.
Blindside waterproofing applications: Use drainage composite in blindside applications to provide a suitable substrate for waterproofing membranes. Apply Drainage Composite and other related materials in accordance with manufacturer's recommendations.
2.
Positive side waterproofing applications: Use drainage composite in positive side applications to protect the waterproofing membrane. Apply Drainage Composite and other related materials in accordance with manufacturer's recommendations.
 
** NOTE TO SPECIFIER ** Delete if not required.
 
3.4
BLINDSIDE APPLICATIONS
A.
Under Slab Installation:
1.
Reinforced structural foundation slabs shall be a minimum of 6 inches (150 mm) thick when placed on a working mud slab. Reinforced concrete slab(s) on compacted grade shall be a minimum of 4 inches (100 mm) thick. For Hydrostatic conditions, slab thickness shall be designed by project engineer. Install Mapeproof under all footings, grade beams and elevator pits when hydrostatic conditions exist or are anticipated per the historical high ground water elevation reported in the project's geotechnical documents.
2.
Install underslab Mapeproof membrane extending to base of shoring wall (white non-woven geotextile side facing side up) fully overlapping the corner transition sheet. Secure corner edge of membrane with washer-head fasteners or pneumatic staples 12 inches (300 mm) on center.
3.
Place Mapeproof directly on properly prepared substrate (white non-woven geotextile side up facing installer; black woven geotextile side down) with adjoining edges overlapped a minimum of 4 inches (100 mm). Stagger sheet end seams a minimum of 12 inches (30 cm). Mechanically fasten or staple Mapeproof membrane as required to prevent movement from construction operations or concrete placement. When the slab is poured in sections, extend Mapeproof a minimum 12 inches (300 mm) beyond the slab edge and rebar to enable proper overlapping.
4.
Install waterproofing system at all grade beams, pile caps and other detail areas in accordance with manufacturer's details for specific project conditions.
5.
Slab Penetrations: For all pipe, rebar, structural or other penetrations install waterproofing system in accordance with manufacturer's standard details for specific project conditions.
6.
Inspect finished Mapeproof installation and repair any damaged material prior to concrete slab placement.
B.
Blindside Underslab to Shoring Wall Transition:
1.
At base of shoring wall, install full sheet of Mapeproof oriented horizontally centered on corner with white non-woven geotextile side up facing installer; black woven geotextile side down against shoring wall and horizontal substrate. Secure Mapeproof sheet to shoring wall through the Mapedrain with fasteners compatible with the substrate and 1 inch washers as required to secure the sheet. Overlap edges of Mapeproof sheets a minimum of 4 inches (10 cm).
2.
Install Mapeproof underslab membrane overlapping transition corner sheet extending over to the corner.
3.
Install Mapeproof wall membrane overlapping transition corner sheet extending down to the corner.
4.
Detail the membrane that is cut, to follow contour of vertical/horizontal intersection, with Mapeproof Sealant and/or Mapeproof Granules.
C.
Wood Lagging Wall Installation:
1.
Install Mapedrain:
a.
At the base of the lagging wall, install Mapedrain TD foundation drain horizontally oriented with the dimple side facing the lagging wall. Secure Mapedrain to the lagging wall with fasteners compatible with the substrate and 1 inch washers approximately every 2 feet. Use corner fittings and splice connectors as required forming a continuous installation. Install Mapedrain TD Fittings side or end outlet to connect with discharge pipes as required for the project.
b.
Install the bottom course of Mapedrain drainage composite (geotextile side against the lagging wall) with the bottom edge fabric flap tucked behind the top edge of the Mapedrain TD and against the lagging to prevent the passage of soil into the core at the connection. Bottom edge of Mapedrain core shall be in contact with top edge of Mapedrain TD.
c.
Install subsequent courses of Mapedrain to within 4 inches to 6 inches of finished grade or as shown on the construction documents. Tightly abut adjoining sheet drain core edges and tuck the extra fabric flaps behind the adjacent roll edge to prevent soil from entering the sheet drain. Secure sheet drain to lagging wall with fasteners compatible with the substrate and 1 inch washers. Where drainage sheet panels are installed overlapped, bottom edge of higher course shall be installed to the outside of the lower course, to shed water like a roof shingle.
d.
Prior to installing drainage composite near grade, install 1/2 inch (12 mm) thick cementitious wall board centered over metal soldier pile from finished grade elevation to specified depth of soldier pile removal. Cementitious wall board will protect the Mapedrain drainage composite and Mapeproof waterproofing membrane when the top of the soldier piles are excavated and removed. Remove cementitious board with removal of soldier pile top and lagging boards.
e.
Around penetrations and tie-back heads, cut Mapedrain drainage composite to fit and wrap extra filter fabric around open core edge to prevent soil from entering core.
f.
At the top of the sheet drain installation, wrap the filter fabric flap behind the exposed top core edge to prevent intrusion of soil into the core and secure sheet drain to wall with termination bar fastened 12 inches (30 cm) on center with the fabric wrapped.
2.
Install Mapeproof:
a.
Starting at the base corner, install base course of Mapeproof (horizontally oriented) to lagging wall over the previously installed drainage composite and corner transition Mapeproof course. Secure sheet edges to shoring wall with fasteners compatible with the substrate and 1 inch washers placed a maximum of 18 inches (46 cm) on center around sheet edge and provide enough fasteners in the field to secure the sheet. Overlap adjacent Mapeproof sheet edges a minimum of 4 inches (10 cm)
b.
After installing the horizontal base course, Mapeproof sheets can be installed either vertically or horizontally oriented. Continue Mapeproof installation up the wall to finished grade elevation detail, staggering all sheet roll ends of adjacent courses a minimum of 12 inches (30 cm). Do not allow horizontal Mapeproof overlap joints to run at the same elevation as the concrete pour lift joints; extend membrane past pour joint or rebar a minimum of 12 inches (30 cm). Overlap adjacent Mapeproof sheet edges a minimum of 4 inches (10 cm).
c.
Tie-Back Heads: For all tie-back heads and soil nails, install waterproofing system with field-fabricated or pre-fabricated tie-back cover in accordance with manufacturer's detail. Fill tie-back cover with a 50/50 mix of Mapeproof Sealant and Mapeproof Granules.
d.
Penetrations: For all pipe, rebar, structural and other penetrations install waterproofing system in accordance with manufacturer's detail for specific project conditions.
3.
Lagging Wall Termination:
a.
Coordinate with excavation and backfill operations conducted under Division 31 Work to remove the required wood lagging timbers and top end of the metal soldier piles per local building code or project requirements. Identify and repair any waterproofing and drainage sheet damaged by excavation and removal of soldier pile heads and lagging. Where excavated, fasten all exposed Mapeproof overlap seams a maximum of 18 inches (46 cm) on center.
b.
Terminate Mapeproof membrane 4 inches to 6 inches (10 cm - 15 cm) below finished grade elevation and secure with fasteners compatible with the substrate and 1 inch washers to exterior surface of concrete wall. Per manufacturer's detail for specific project condition(s), install Planiseal 88 to concrete substrate extending down below the top edge of Mapeproof membrane a minimum of 4 inches (10 cm) and extending above grade a minimum of 4 inches (10 cm). At the top termination edge of Mapeproof, install Mapeproof Sealant 2 inches (5 cm) wide x 1/4 inch (6 mm) thick to concrete, behind the top edge of Mapeproof. Install a rigid termination bar along the top edge of the Mapeproof; fastened a maximum of 12 inches (300 mm) on center.
c.
Inspect finished Mapeproof installation and repair any damaged material prior to concrete placement.
D.
Steel Sheet Piling Installation:
1.
Trowel a 1/2 inch (12 mm) thick layer of Mapeproof Sealant over all steel sheet piling interlocks. Any areas of water seepage at the interlocks shall be welded prior to Mapeproof installation to prevent pre-hydration of the Mapeproof and Mapeproof Sealant.
2.
Starting at the base corner of the shoring, install the first course of Mapeproof (horizontally oriented) to metal sheet piling wall over the previously installed sheet drainage (if used) and corner transition Mapeproof course. Secure sheet edges to shoring wall with washer-head fasteners placed a maximum of 18 inch (46 cm) on center around sheet edge and provide enough fasteners in the field to secure the sheet.
3.
After installing the horizontal base course, Mapeproof sheets can be installed either vertically or horizontally oriented. Continue Mapeproof installation up the wall to finished grade elevation detail, staggering all sheet roll ends of adjacent courses a minimum of 12 inches (30 cm). Do not allow horizontal Mapeproof overlap joints to run at the same elevation as the concrete pour lift joints; extend membrane past pour joint or rebar a minimum of 12 inches (30 cm). Overlap adjacent Mapeproof sheet edges a minimum of 4 inches (10 cm).
4.
Tie-Back Heads: For all tie-back heads and soil nails, install waterproofing system with field-fabricated or pre-fabricated tie-back cover in accordance with manufacturer's detail. Fill tie-back cover with a 50/50 mix of Mapeproof Sealant and Mapeproof Granules.
5.
Penetrations: For all pipe, rebar, structural and other penetrations install waterproofing system in accordance with manufacturer's detail for specific project conditions.
6.
Terminate the Mapeproof membrane 4 inches to 6 inches (10 cm - 15 cm) below the finished grade elevation and secure with fasteners compatible with the substrate and 1 inch washers to exterior surface of concrete wall. Per manufacturer's detail for specific project conditions, install Planiseal 88 to concrete substrate extending down below the top edge of Mapeproof membrane a minimum of 4 inches (10 cm) and extending above grade a minimum of 4 inches (10 cm). At the top termination edge of Mapeproof, install Mapeproof Sealant 2 inches (5 cm) wide x 1/4 inch (6 mm) thick to concrete, behind the top edge of the Mapeproof. Install a rigid termination bar along the top edge Mapeproof; fastened a maximum of 12 inches (30 cm) on center.
7.
Inspect finished Mapeproof installation and repair any damaged material prior to concrete placement.
E.
Cut Rock Face or Secant Piles:
1.
Cut rock face or secant pile (auger cast caisson) wall shall be sufficiently flat and smooth to provide an adequate surface to apply Mapeproof. Mapeproof will conform to large gradual change in planes (e.g. around secant/caisson column) but shall not be installed over sharp surface deflections or voids. Deflections/voids and inside corners between secant/caisson piles shall be filled with cementitious material to create a suitable substrate for waterproofing installation
2.
Starting at the base corner of the shoring wall, install the first course of Mapeproof (horizontally oriented) to rock face or secant pile wall over the previously installed sheet drainage (if used) and corner transition Mapeproof course. Secure sheet edges to shoring wall with fasteners compatible with the substrate and 1 inch washers placed a maximum of 18 inches (46 cm) on center around sheet edge and provide enough fasteners in the field to secure the sheet.
3.
After installing the horizontal base course, Mapeproof sheets can be installed either vertically or horizontally oriented. Continue Mapeproof installation up the wall to finished grade elevation detail, staggering all sheet roll ends of adjacent courses a minimum of 12 inches (30 cm). Do not allow horizontal Mapeproof overlap joints to run at the same elevation as the concrete pour lift joints; extend membrane past pour joint or rebar a minimum of 12 inches (30 cm). Overlap adjacent Mapeproof sheet edges a minimum of 4 inches (10 cm).
4.
Tie-Back Heads: For all tie-back heads and soil nails, install waterproofing system with field-fabricated or pre-fabricated tie-back cover in accordance with manufacturer's detail. Fill tie-back cover with a 50/50 mix of Mapeproof Sealant and Mapeproof Granules.
5.
Penetrations: For all pipe, rebar, structural and other penetrations install waterproofing system in accordance with manufacturer's detail for specific project conditions.
6.
Terminate Mapeproof membrane 4 inches to 6 inches (10 cm - 15 cm) below the finished grade elevation and secure with fasteners compatible with the substrate and 1 inch washers to exterior surface of concrete wall. Per manufacturer's detail for specific project condition(s), install Planiseal 88 to concrete substrate extending down below the top edge of the Mapeproof membrane a minimum of 4 inches (10 cm) and extending above grade a minimum of 4 inches (10 cm). At the top termination edge of Mapeproof, install Mapeproof Sealant 2 inches (5 cm) wide x 1/4 inch (6 mm) thick to concrete behind the top edge of the Mapeproof. Install a rigid termination bar along the top edge Mapeproof; fastened a maximum of 12 inches (30 cm) on center.
7.
Inspect finished Mapeproof installation and repair any damaged material prior to concrete placement.
F.
Backfilled Poured-In-Place Concrete Walls:
1.
Install Mapeproof:
2.
Place 1-1/2 inches fillet of Mapeproof Granules along the wall/footing intersection. Mapeproof Granules may be substituted with a 3/4 inch fillet of Mapeproof Sealant.
3.
Install a 3/4 inch (18 mm) thick fillet application of Mapeproof Sealant at all inside wall corner transitions. Use Mapeproof Sealant to detail form-tie pockets/patches and any slightly irregular concrete surface and/or honeycomb areas.
4.
Starting at the base of the wall, install Mapeproof sheet oriented horizontally (black woven geotextile side against the wall; white non-woven geotextile side facing installer) covering the Mapeproof Granules and extending onto the footing a minimum of 6 inches (150 mm). For hydrostatic conditions, cover the entire footing and overlap waterproofing membrane from underslab work a minimum of 6 inches (150 mm). Attach Mapeproof using fasteners compatible with the substrate and 1 inch washers a maximum of 18 inches (46 mm) on center. Overlap all adjacent sheet edges a minimum of 4 inches (10 cm). Stagger all vertical overlap seams a minimum of 12 inches (30 cm).
5.
After installing the horizontal base course, Mapeproof sheets can be installed either vertically or horizontally oriented. Continue Mapeproof installation up wall to the finished grade elevation detail, staggering all sheet roll ends of adjacent courses a minimum of 12 inches (30 cm). Do not allow horizontal Mapeproof overlap joints to run at the same elevation as the concrete pour lift joints; extend the membrane past the pour joint or rebar a minimum of 12 inches (30 cm). Overlap adjacent Mapeproof sheet edges a minimum of 4 inches (10 cm) and fasten at 18 inches (46 cm) on center using fasteners compatible with the substrate and 1 inch washers.
6.
Penetrations: For all pipe, rebar, structural and other penetrations install the waterproofing system in accordance with manufacturer's details for specific project conditions.
7.
Terminate Mapeproof membrane 4 inches to 6 inches (10 cm - 15 cm) below finished grade elevation and secured with fasteners compatible with the substrate and 1 inch washers to exterior surface of concrete wall. Per manufacturer's detail for specific project condition(s), install Planiseal 88 to concrete substrate extending down below the top edge of Mapeproof membrane minimum 4 inches (10 cm) and extending above grade minimum 4 inches (10 cm). at the top termination edge of Mapeproof. Install Mapeproof Sealant 2 inches (5 cm) wide x 1/4 inch (6 mm) thick to concrete behind top edge of Mapeproof. Install a rigid termination bar along the top edge Mapeproof; fastened maximum 12 inches (300 mm) on center.
8.
Inspect finished Mapeproof installation and repair any damaged material prior to backfill placement.
G.
Install Mapedrain:
1.
At the base of the wall, place Mapedrain TD foundation drain horizontally oriented standing up tight to wall with the dimple side facing out over the previously installed Mapeproof waterproofing using fasteners compatible with the substrate and 1 inch washers approximately 24 inches (60 cm) on center. Use Mapedrain TD accessory fittings, as required, to form a continuous installation. Install Mapedrain TD discharge outlet fittings to connect to discharge pipes as required for the project.
2.
Install the bottom course of Mapedrain drainage composite (flat plastic core side against the wall/waterproofing) with the Mapedrain bottom core edge in contact with top core edge of Mapedrain TD. Secure Mapedrain drainage composite to wall using fasteners compatible with the substrate and 1 inch washers approximately 24 inches (60 cm) on center. Secure extra fabric flap of Mapedrain extending down the top front edge of Mapedrain TD to prevent the passage of soil into the core at the connection.
3.
Install subsequent courses of Mapedrain drainage composite to the top termination edge of Mapeproof. Tightly abut adjoining drainage composite core edges together and secure the extra fabric flaps over the front of adjacent roll edges, to prevent soil from entering the drainage composite. Secure Mapedrain drainage composite to wall using fasteners compatible with the substrate and 1 inch washers approximately 24 inches (60 cm) on center. Where drainage composite panels are installed overlapped, the bottom edge of higher course shall be installed to the outside of the lower course; shingle style to shed water.
4.
Around penetrations and tie-back heads, cut Mapedrain drainage composite to fit and wrap extra filter fabric around open core edge to prevent soil from entering core.
5.
At the top of the Mapedrain drainage composite installation, wrap the filter fabric flap behind the exposed top core edge to prevent intrusion of soil into the core.
3.5
BACKFILL EXCAVATED CAST-IN-PLACE CONCRETE WALLS
A.
Backfill shall be placed in lifts up to 2 feet deep. Each lift shall be compacted to a minimum 85% Modified Proctor density promptly after waterproofing system and drainage composite system has been installed.
B.
Coordinate with contractor responsible for backfill work by informing them each time a waterproofed area is ready for backfill.
C.
Backfill shall consist of compactable clean soil or angular aggregate (3/4 inch or less) free of debris, sharp objects, and stones larger than 3/4 inch (18 mm).
D.
Care shall be used during backfill operation to avoid damage to the waterproofing system. If damage occurs, cease backfilling and report damage. Damaged waterproofing shall be repaired per manufacturer's guidelines.
3.6
CLEAN UP
A.
In areas where adjacent finished surfaces or work are contaminated by waterproofing material, immediately notify General Contractor and trade responsible for area. 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 debris and damaged product in accordance with applicable regulations.
B.
Maintain work area in a neat and workmanlike condition. Remove empty cartons and rubbish from site daily.
C.
Repair or replace defaced or disfigured finishes caused by the work of this section.
END OF SECTION