Product Catalog

Supporting new tunnel heading or mine entry where rockfalls are possible and providing support for weak ground at the crown or brow during surface to underground transition.

JENNMAR, in conjunction with our sister affiliate engineering company, JENNMAR Engineering can custom design arch and square set support systems as well as tunnel and shaft rings.

Used for support of new tunnels and excavation in both soft and hard rock tunnels. Circular in profile, comprised of cold-formed or rolled Wide-Flange Beams cut into segments and bolted together in the field.

Our Tunneling Ties are specifically designed for use in tunnel projects where the bottom surface is not flat.