MJS Monolith Joint Seal System™ Structural Technologies

Overview

STRUCTURAL TECHNOLOGIES’ MJS™ is a proprietary replacement waterstop monolith joint seal system that controls leakage of water through existing joints, particularly in dams, locks, large retaining walls and other structures.

The MJS™ System is a long-lasting solution that holds up to water and joint movement without damaging the system itself.

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Applications

The system is installed in a drilled hole and uniformly pressurized to offset hydrostatic pressure.

Dams
Locks
Large Retaining Walls

Installed in a Drilled Hole

Ensures continuity throughout the length of the joint.
The system won’t track into opened joint – preventing damage to the dam seal
May be removed or replaced

Maintains Uniform Internal Pressure

Offsets hydrostatic pressure from the water source regardless of joint movement
Accommodates pressure heads to 150 psi and depths over 300 feet
Adapts to variation in weather from -50°F to 120° F

Overall System Advantages

Maintains water control when the joint opens and closes
Eliminates the need for divers
Eliminates the need for chemicals to contaminate the water supply
Easily maintained and serviced
Restores original water control features designed into the structure
Easy to inspect via remote cameras during and after installation

Moisture Control Engineering Support

STRUCTURAL TECHNOLOGIES’ experts integrate with engineers, owners and builders to assist with initial assessments through design and material selection.

Design-Assist & Engineered Product Support

Investigation Support
Solution Development
Budget Development
Specification Assistance
Constructability Consulting
Application Engineering
Quality Control Programs
Project-Specific Design-Assist

Meet Our Moisture Control Leader

With over 35 years of experience, Brent Anderson, P.E. is an expert in below-grade and plaza deck waterproofing.

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