J N A BUILDERS INC
Learn more about what we do:
J N A Builders Inc. is a general engineering contractor specializing in mass transit facilities, heavy civil and commercial construction.
SELF PERFORM WORK:
J N A Builders Inc specializes in structural concrete, trackwork concrete, gas/water proof membrane systems, precast concrete floating slabs, and miscellaneous tunnel ring steel and elastomer assemblies (Omega Seals).
SERVICES
Self Perform Work
Cut & Cover Guideway and Underground Station Construction
Formwork for Structural Concrete Inverts, Walls, Tunnel Walkways, Elevated Decks.
Parking Structures
Formwork - Support for Elevated Decks
Underground Structures
Structural Concrete Placement - Invert, Walls, Decks, Miscellaneous Elements.
Trackwork
Concrete Placement for Trackwork.
Gas and Water Membrane Systems
Hydrocarbon Resistant Membrane (100 Mil HDPE & 60 Mil HDPE with Bentonite Liner), Waterbar, Hydrophilic Waterstops, and Remediation Systems.
Tunnel Seals
Elastomer Tunnel Seal & Steel Assemblies between bored tunnel and cut and cover structure interfaces.
Precast Concrete Floating Slabs
Precast concrete floating slabs for the mitigation of noise and vibration supported by elastomer bearing and side compression pads.