BELOW-GRADEINJECTION WATERPROOFING
CELLARS | ELEVATOR PITSFLOOR SLABS ON GRADE
MECHANICAL ROOMS | PARKING GARAGESPIPE PENETRATION | TUNNELS
®
CONCRETE | BRICK | STONE | RUBBLE
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CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
The CGI Waterproofing System is acost-effective and environmentallysafe solution to stopping waterinfiltration in below-gradefoundations, cellars, elevator pits,tunnels, mechanical rooms, vaultedstructures, and garages. CGI performs “concrete gelinjection” by drilling and injecting atwo-component hydrophilic resinsystem through the negative, orinterior, side of the structure usingour specialized equipment. The twoliquid components, which arewater-like in viscosity, penetratethe tiniest cracks, fissures andwater pockets to the full depth ofthe substrate and travel to thecompromised membrane above,chemically reacting to form aflexible gel barrier. CGI’smethodology is beneficial andadvantageous as a result of thegel’s properties, and, byimplementing its technology fromthe negative side of the foundation,all costly and disruptive exteriorexcavations, common withtraditional waterproofingapplications, are avoided.
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Properties•Water-like viscosity•Highly elastic and adhesive•Lab tested as non-toxic, non-flammable and non-hazardous
•Little to no odor produced duringand after reaction
•Will not promote growth of fungi,mold or bacteria
•Cleans with water requiring nocleaning solvent
•Resilient against water containingoil, salt and/or sewage
Advantages•Disruptive exterior excavationsavoided
•Implement technology duringactive leaks
•No drilling to the positive siderequired, avoiding damage toexisting waterproofingmembrane(s)
•Controlled setting time calculatedbased on active water pressureand volume
•Occupies and seals water entrypoints for the life of the structure
Benefits•Reclaim unusable space•Restore structural integrity,durability and appearance
•Reduce unhealthy and unsafetenant conditions
The CGI Waterproofing System | A Two-Part Liquid Component System
Component BWater is combined withcatalyst to enable gel
reaction.
Component AGel acryl by De Neef,
combined with accelerator,results in precise tuningbased on desired settingtime. Set time can be asquick as five seconds.
Flexible Water Sealing Geldemonstrates superiorelasticity, adhesion and
durability.
Specialized equipment is utilized to inject at a working pressure exceeding 3,200
psi to combat hydrostatic groundwater pressure.
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
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Active Groundwater Infiltration Through Cracks and Cold Joints
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CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
SOIL
COMPONENT A
COMPONENT B
Concrete Wall Injection
Holes are drilled from the interior side, next to cracks/cold joints, where the two liquid components are then pressure-injected within the substrate to forma flexible water sealing gel, which eliminates water intrusion.
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
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SOIL
COMPONENT A
Masonry Wall Injection
Holes are drilled from the interior side, nextto cracks/cold joints, where the two liquidcomponents are then pressure-injectedwithin the substrate to form a flexible watersealing gel, which eliminates waterintrusion.
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CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
Interior Cellar Space
CONCRETE
Urethane Sealant
Gravity Feeding of Two LiquidComponents
A and B
Backer Rod
Existing Concrete Wearing Slab
Existing Structural Slab
Vaulted Concrete Sidewalk Application
The CGI AQUA LOC Resin LV-GEL SealsCompromised Membranes and Cracks
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
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Interior Cellar Space
GRANITE
Urethane Sealant
Gravity Feeding of Two LiquidComponents
A and B
Backer Rod
Granite Sidewalk Slab
SOFT ROC - Similar to Mineral Wool Fiber Filler orOakum - acts as a Form Stop
Vaulted Granite Sidewalk Application
Sand Infused with CGI AQUA LOC Resin LV toOccupy Joint’s Volume to the Full Depth
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CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
CGI Specialized Equipment | Automatic Injection Tool Utilizing Compressed Air
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
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CGI Specialized Equipment | Pipe Penetration Tools
CORE TO PIPE PENETRATION CONDUIT SLEEVE TO CABLE(S) PENETRATION(ANNULAR INJECTION)
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CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
CONDUIT SLEEVE TO CABLE(S) PENETRATION (ANNULAR INJECTION)
CGI Specialized Equipment | Pipe Penetration Tools
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
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In the C4 Level Broadcast Tank Room, the south facing concrete foundation wallwas showing signs of active below-grade water infiltration along with signs ofprevious water staining and efflorescence. Upon review, our team found verticalfoundation wall cracks that started at the floor slab and continued upward on thewall, in addition to several locations with 3/4-inch diameter holes that were activelyleaking. As a result of the structural defects, ponding of water was found on thefloor slab on grade. The elevation of the cracks and holes were well within thegroundwater table and under tremendous hydrostatic pressure as this C4 Level wasat least 50 feet below-grade and very thick, as this structural wall was necessary tosupport the Freedom Tower above.It was very critical that these actively leaking locations were rectified so that thespecialized epoxy floor slab coating could be properly applied to a dry surface.These water entry points were successfully resolved using the CGI waterproofingsystem where our specialized pumps created the necessary pressure output of over3,000 psi for the two-component gel to penetrate full depth toward the exteriorside. Thus, the resulting gel was able to reach deep within the cracks and the holesfor a complete waterproofing seal. Consequently, the general contractor was ableto perform the application of the specialized epoxy coating effectively.
Featured Project
Address: One World Trade Center285 Fulton Street , New York, NYBuilding Type: CommercialLocation: Oil Tank RoomSubstrate: ConcreteOwner: The Durst OrganizationGeneral Contractor: Tishman Construction
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
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Concrete Floor Slab CracksConcrete Floor Slab Cracks
1 Northside Piers, Brooklyn, NY
®
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
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Concrete Floor Slab Cracks & Seams
The Uniondale Public Library400 Uniondale Avenue, Uniondale, NY
Concrete Floor Slab
| Before |
®
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NY-Presbyterian HospitalThe Helmsley Medical Tower
1320 York Avenue, New York, NY
Oil Tank Room
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
®
| After |
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Tunnel
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
| After |
| Before |
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Public School 101The Verrazano School
Brooklyn, NY
Concrete Floor Slab Cracks
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
®
Boiler Room
| Before injections
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
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®
|
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
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Vaulted Structural Slab Below Courtyard
Cracks
®
London Terrace Gardens435 West 23rd Street, New York, NY
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
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Perimeter Expansion Joints
Parking Garage Below
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The GM BuildingThe Fifth Avenue Apple Store
767 Fifth Avenue, New York, NY
Cellar | Storage and Locker Area
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
®
New York University246 Greene Street, New York, NY
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
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Vaulted Structure | Sidewalk
®
| Resulting gel |
| Injection from below |
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
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Vaulted Masonry Structure | Below Street Grade
The Evelyn Hotel 7 East 27th Street, New York, NY
®
| Before |
111 Mercer Street, New York, NY
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
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Rubble Walls
®
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1185 Avenue of the Americas, New York, NY
Concrete Floor Slab Cracks
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
Vaulted Sidewalk | Expansion Joints Above Cellar Level
Cellar Level
Gravity Feeding Two Liquid Components
®
| After |
Silver Towers South620 West 42nd Street, New York, NY
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
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Elevator Pit
®
| Before |
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Lincoln Center70 Lincoln Center Plaza, New York, NY
Tunnel
CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
®
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CGINORTHEAST.COM BELOW-GRADE INJECTION WATERPROOFING
| Before |
Leonidas Tsampas – Vice PresidentM: 516.790.2983
CGI NORTHEAST49-28 31st Place, Long Island City, NY 11101
CGInortheast
cgi-northeast-inc.
George Doukas – PresidentM: 917.518.1679
®
CGI Northeast Inc. is an AIA CES Approved Provider
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