Section C BELOW SLAB-ON-GRADE
Transcript of Section C BELOW SLAB-ON-GRADE
Dual Seal® Membrane Waterproofing Installation Manual
An Company
Section CBELOW SLAB-ON-GRADE
RPM/Belgium N.V.H. Dunantstraat 11B • B-8700 Tielt
Tel.: +32 (0) 51 / 40 38 01 • Fax: +32 (0) 51 / 40 55 90E-mail: [email protected] • www.rpm-belgium.be
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WHAT ARE THE DUAL SEAL® AND DUAL SEAL® LG MEMBRANES?
Dual Seal® membranes are two-component membranes manufactured by Paramount Technical Products, Inc. a subsidiaryof RPM International Inc., and exclusively distributed in Europe by RPM/Belgium N.V.. The membranes combine thecharacteristics of the two most effective waterproofing materials available today; high density polyethylene (HDPE) andWyoming Sodium Bentonite clay (approximately 5 kg/m2). These two materials act in concert to produce a self-sealing,self-protecting waterproofing membrane which, when subject to the necessary containment pressure, seals tightly to itselfand any surface it comes in contact with when in the presence of water. The Dual Seal® LG Membrane is the Dual Seal®
Membrane with a protective layer of spun polypropylene imbedded in the bentonite component. This polypropyleneprotects the bentonite during installation while allowing the bentonite to seal against the substrate. Dual Seal® LGMembranes are specifically designed for use in blindside installations such as lagging walls, under floors, and elevatorpits, etc...
Figure 1: Dual Seal® Membrane and Dual Seal® LG Membrane
Wyoming SodiumBentonite
GENERAL INSTALLATION NOTES
Preparation
1. The Dual Seal® and Dual Seal® LG Membranes can beinstalled in conjunction with any of the four most typicalslab-on-grade systems with equal performance (seefigures 2 through 5). The slab-on-grade systemselected and itʼs corresponding Dual Seal® Membraneinstallation is based on such factors as: waterhead,grade condiction, climate, traffic by other trades, etc.
2. The grade should be prepared either by compactingoriginal earth, compacting a granular base, or byinstalling a mud slab / concrete blinding layer ofthickness 75 mm.
3. Bentonite facing up is the preferred installation method.However, if, for reasons of protection, the bentonite sideis face down, 1200 g Polyethylene sheet must first beinstalled on top of the earth or base.
4. When the bentonite side of Dual Seal® Membrane isfacing up, it is recommended to use the Dual Seal® LGMembrane.
5. Overlapped Dual Seal® Membrane installations belowfloor slab shall be a minimum of 75 mm at overlaps.
6. All overlaps shall be stapled every 200 mm when thebentonite side is face up, and taped with 100 mm wideDual Seal® Temporary tape when the bentonite side isface down.
7. Waterproof around all pipe penetrations (details 12-15,also see section K “penetrations”).
8. Prepare all expansion joints (details 10 and 11).
9. Prepare tie-in to existing floor and below floorwaterproofing.
10. Terminate around floor perimeter (details 8 and 9).
11. When the bentonite side is facing up, protect the DualSeal® Membrane from damage caused by reinforcingchairs.
12. Repair any damaged Dual Seal® Membrane prior toconcrete placement, after steel reinforcement is tied inplace.
13. Covering material over Dual Seal® Membranes mustweigh at least 140 kg/m2 to provide the necessarycontainment pressure. In practice this means aminimum thickness of a concrete slab of 75 mm and aminimum thickness of soil of 150 mm.
14. Concrete placement should not be dropped over 600mm directly onto a Dual Seal® Membrane. Best is toflow in place.
15. Install Superstop® at all construction joints.
High Density Polyethylene (HDPE)
Wyoming SodiumBentonite
High DensityPolyethylene (HDPE)
Spun polyproplene protection screed
Dual Seal® Membrane Dual Seal® LG Membrane
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Figure 2: Simple slab-system A (also see fig. 6)
Finished floor slab. Minimum thickness 75 mm togive required containment pressure. Light to mod-erate reinforcement.
Dual Seal® LG Membrane (HDPE side down).Staple overlaps every 200 mm
Compacted Granular Base.20 mm or smaller
SLAB-ON-GRADE FLOOR SYSTEMS
Figure 3: Mat slab - system B (also see fig. 7)
Figure 4: Mat slab with protection slab - system C (also see fig. 8)
Figure 5: Mat slab with mud slab / blinding concrete layer - system D (also see fig. 9)
Anticipatedconditions:
The Dual Seal® LGMembrane is not leftexposed for pro-longed periods.
Light traffic asexpected on DualSeal® Membranebefore casting offinished floor slab.
Mat slab (heavily reinforced)
1200 g Polyethylene base sheet
Dual Seal® Membrane (HDPE side up). 100 mmwide Dual Seal® Temporary tape at overlaps
Compacted Granular Base.20 mm or smaller
Anticipatedconditions:
Dual Seal®
Membrane leftexposed for pro-longed periods.
Moderate trafficexpected on DualSeal® Membranebefore casting of themat slab.
Mat slab (heavily reinforced)
Dual Seal® Membrane (HDPE side up). 100 mmwide Dual Seal® Temporary tape at overlaps
Unexcavated earth
Mud slab / concrete blinding layer of 75 mmthickness
Anticipatedconditions:
Dual Seal®
Membrane leftexposed for pro-longed periods.
Moderate trafficexpected on DualSeal® Membranebefore casting ofmat slab.
Mat slab (heavily reinforced)
1200 g Polyethylene base sheet
Protection slab (not reinforced)
Dual Seal® Membrane (HDPE side up). 100 mmwide Dual Seal® Temporary Tape overlaps.
Compacted Granular Base.20 mm or smaller
Anticipatedconditions:
Heavy traffic expect-ed on Dual Seal®
Membrane beforecasting of mat slab.
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SLAB-ON-GRADE FLOOR SYSTEMS
Figure 7: Mat slab - system B (also see fig. 3)
Figure 6: Simple slab - system A (also see fig. 2)
Finish floor slab. Minimum thickness75 mm to give required containmentpressure. Light to moderate rein-forcement.
Superstop® at construction joint
Dual Seal® LG Membrane (HDPEside down.) Staple 75 mm overlapsevery 200 mm.
Compacted Granular Base20 mm or smaller
Mat slab (heavily reinforced)
Superstop® at construction joint
1200 g Polyethylene base sheet
Dual Seal® Membrane (HDPE sideup.) 100 mm wide Dual Seal®
Temporary tape at 75 mm overlaps.
Compacted Granular Base.20 mm or smaller
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SLAB-ON-GRADE FLOOR SYSTEMS
Figure 9: Mat slab with mud slab / blinding concrete layer - system D (also see fig. 5)
Figure 8: Mat slab with protection slab - system C (also see fig. 4)
Mat slab (heavily reinforced)
Superstop® at construction joint
Protection slab (not reinforced)
1200 g Polyethylene base sheet
Dual Seal® Membrane (HDPE side up.) 100mm Dual Seal® Temporary Tape at 75 mmoverlaps.
Compacted Granular Base.20 mm or smaller
Mat slab (heavily reinforced)
Superstop® at construction joint
Dual Seal® Membrane (HDPE side up.) 100mm Dual Seal® Temporary Tape at 75 mmoverlaps.
Unexcavated earth
Mud slab / concrete blinding layer of 75 mmthickness
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DETAILS
Detail 1: Tie-in between backfilled wall/footing and floor slab
Detail 2: Tie-in between backfilled wall/footing and mat slab and protection slab
Detail 3: Tie-in between backfilled wall and mat slab and protection slab
Nail Dual Seal® LG Membrane every 450 mm
Dual Seal® LG Membrane (HDPE side down)
25 mm Dual Seal® Mastic Fillet
Compacted Granular Base
50 mm Dual Seal® Mastic Fillet
Superstop® installed 50 mm in from outer face of wall
300 mm Dual Seal® LG Membrane corner strip.(Staple edges every 75 mm)
Dual Seal® LG Membrane (bentonite facing installer)(Placed to the interior of footing formwork)
50 mm Dual Seal® Mastic Fillet
Superstop® installed a minimum of 50 mm in fromouter face of wall
Protection slab
Dual Seal® Membrane (HDPE side up.) Staple termi-nation every 75 mm) (see figures 4 and 8)
Dual Seal® LG Membrane (bentonite facing installer)Placed to the interior of mat slab formwork
1200 g Polyethylene base sheet
Compacted Granular Base
Superstop® installed a minimum of 50 mm in fromouter face of wall
25 mm Dual Seal® Mastic Fillet
Protection slab
Dual Seal® Membrane (HDPE side up.) Nail to footingevery 200 mm. (see figures 4 and 8)
Polyethylene base sheet
Compacted Granular Base
Dual Seal® LG Membrane (see detail 1)
Dual Seal® LG Membrane (see detail 1)
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DETAILS
Detail 4: Tie-in between backfilled wall and mat slab and mud slab / blinding concrete layer
Detail 5: Tie-in between blindside wall/footing and floor
Detail 3: Tie-in between blindside wall and mat slab and protection slab
50 mm Dual Seal® Mastic Fillet
50 mm Dual Seal® Mastic Fillet
Superstop® installed 50 mm in from outer face of wall
Dual Seal® LG Membrane (bentonite facing installer)Placed to the interior of mat slab formwork
Dual Seal® Membrane (HDPE side up) (see figures 5 and 9)
Mud slab / Concrete blinding layer
Unexcavated earth
Superstop® installed 50 mm in from outer face of wall
Dual Seal® LG Membrane (Bentonite facing installer.All overlaps shall be 75 mm with nails every 600 mmand staples every 75 mm)
Dual Seal® Membrane (HDPE side up.)Staple termination every 75 mm.(see figures 4 and 8)
1200 g Polyethylene base sheet
Compacted Granular Base
Nail Dual Seal® LG Membrane every 200 mm
25 mm Dual Seal® Mastic Fillet
Dual Seal® LG Membrane (HDPE side down) (see figures 2 and 6)
Dual Seal® LG Membrane (bentonite against con-crete) Placed to the interior of footing formwork
Compacted Granular Base
Protection slab
Superstop® installed 50 mm in from outer face of wall
300 mm Dual Seal® LG Membrane corner strip.(Bentonite against concrete.) Staple edges every 75 mm.
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Finish floor slab
Wall
Footing
Nail Dual Seal® LGMembrane every 150mm over Superstop®
Dual Seal® LG Membrane(HDPE side down)
25 mm Dual Seal® MasticFillet
Finish floor slab
Backer rod andsealant
Footing
Dual Seal® Termina-tion bar nailed every200 mm over DualSeal® Membrane andSuperstop®
Dual Seal® LGMembrane (HDPEside down)
25 mm Dual Seal®
Mastic Fillet
Detail 7: Tie-in between blindside wall and below floor waterproofing
Detail 8: Termination at floor to interior wall face - HDPE side down
Detail 9: Termination at floor to interior wall face - HDPE side up
DETAILS
Superstop® installed 50 mm from outer face of wall
Mud slab / concrete blinding layer
Dual Seal® LG Membrane (bentonite facing installer) (see section B)
Dual Seal® (HDPE side up. Staple termination every75 mm) (see figures 5 and 9)
Finish floor slab
Wall
Footing
Nail Dual Seal® Membraneevery 200 mm and tapewith Dual Seal®
Permanent Seam Tape
Dual Seal® Membrane(HDPE side up)
25 mm Dual Seal® MasticFillet
Finish floor slab
Backer rod andsealant
Footing
Dual Seal®
Termination barnailed every 200mmDual Seal®
Membrane(HDPE side up)
25 mm Dual Seal®
Mastic Fillet
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Detail 10: Floor to wall expansion joint
Detail 11: Mid floor expansion joint
Detail 12: Through floor penetration (cast-in-place)
DETAILS
Sealant and backer rod
Finish floor slab
Precompressed expandable joint filler
Joint filler
Dual Seal® Membrane termination strip. (HDPE sideup. Nail every 600 mm and install 100 mm wideDual Seal® Temporary Tape
Dual Seal® LG Membrane (HDPE side down)
Superstop® wrapped around pipe, held in placewith tying wire.
A Dual Seal® Membrane “washer” slipped over pipe. (HDPE side down)
50 mm Dual Seal® Mastic Fillet around pipe.
Compacted Granular Base
Interior treatment per architect
Ship lap style expansion joint (preferred)
Joint filler
600 mm wide strip of Dual Seal® Membrane(HDPE side up)
Dual Seal® Membrane (HDPE side up)
Dual Seal® LG Membrane (HDPE side down)
Compacted Granular Base
Pipe, elevator cylinder or other
1200 g Polyethylene base sheet
Compacted Granular Base
Note: RPM/Belgium N.V. makes no warranty with respect to expansionjoints.
Note: RPM/Belgium N.V. makes no warranty with respect to expansionjoints.
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Detail 13: Through floor penetration (cast-in-place)
Detail 14: Through floor penetration (blocked out and plugged)
Detail 15: Through floor penetration
DETAILS
Superstop® wrapped around pipe, heldin place with tying wire
50 mm Dual Seal® Mastic Fillet aroundpipe
A Dual Seal® Membrane ”washer”slipped down over pipe. (Undersizehole in “washer”. HDPE side up. Dual Seal® Temporary Tape
Dual Seal® Membrane (HDPE side up)
1200 g Polyethylene base sheet
Concrete blinding layer
Pipe, elevator cylinder or other
Concrete plug (to be placed)
Fold down Dual Seal® Membrane thathas been cut to fit around pipe
25 mm deep Dual Seal® Granular
Compacted granular base
Dual Seal® LG Membrane cut to fitaround pipe (HDPE side down)
Steel dowel to tie mat slab to concreteplug to oppose water head (per struc-tural engineer)
Minimum 50 mm Dual Seal® Granular
Dual Seal® Membrane (HDPE side up)
1200 g Polyethylene base sheet
Concrete blinding layer
Hydraulic cement plug. (to be foundedconcrete blinding layer to opposewater head)
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Detail 16: Concrete pile with pile cap.
Detail 17: Concrete pile with mat slab
Detail 18: Footing at interior column
DETAILS
Concrete pile cap.
Treated Plywood (or otherwise stabilized earth)(see section A when cap is backfilled)
Superstop® wrapped around pile
300 mm Dual Seal® LG Membrane corner strip (see detail 5)
50 mm Dual Seal® Mastic Fillet
Dual Seal® LG Membrane (bentonite against concrete)
1200 g Polyethylene
50 mm Dual Seal® Mastic Fillet
Pile
Interior column
Superstop® typical all construction joints
Mat slab
Dual Seal® Permanent Seam Tape onto primedconrete
1200 g Polyethylene
50 mm Dual Seal® Mastic Fillet
Dual Seal® Membrane (HDPE side up) (See figures 5 and 9)
Dual Seal® LG Membrane (HDPE side down) (Seefigures 2 and 6)
Dual Seal® LG Membrane transition sheet(HDPE down)
Nail every 300 mm
300 mm Dual Seal® LG Membrane Corner strip(See detail 5)
Dual Seal® LG Membrane (bentonite side againstconcrete; place to the interior of footing formwork
Footing
Mud slab / concrete blinding layer
Concrete pile
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DETAILS
Detail 19: Typical fold detail at below floor to wall inside corner
Slit Dual Seal® Membrane or Dual Seal® LGMembrane and overlap as shown
This brochure is not intended to establish product recommendations for any installation. To the best of our knowledge theinformation contained herein is true and accurate at the time of issue, but is subject to change without prior notice. © RPM/Belgium N.V. - 05/2009 (version 2)
Detail 20: Blindside construction of elevator, sump or other below floor pit
Floor slab
Dual Seal® LG Membrane (HDPE side down)(See figures 2 and 6)
Dual Seal® LG Membrane (Bentonite against con-crete)
300 mm Dual Seal® LG Membrane Corner strip.Bentonite side against concrete. Staple edges every75 mm
Superstop® installed 50 mm from outer face of wall
Compacted granular base
50 mm Dual Seal® Mastic Fillet
Treated Plywood (or otherwise stabilized earth)(See section A when pit wall is backfilled)