The Judy Company develops & installs anchoring systems of rock bolts, rock anchors, tiebacks, tiedowns, earth anchors, soil nails, concrete anchors, & post-tensioned tendons.
Anchors are durable, reliable, economical tension supports used in a wide variety of situations to stabilize, secure, and augment structures. Made of high strength steel bars or strands, they can be bonded to rock, concrete and many types of soil. Anchors are used to counteract external, overturning, uplift, and seismic forces, and are used actively (prestressed) or passively (non stressed).
Soil and rock nails are fully grouted, passive (non-tensioned) anchors used to resist uplift forces and failure forces on slopes or excavations. The nails take advantage of residual stresses in soil or excavations (broken or solid) for load transfer. Passive anchors are generally used where prestressing is neither not possible nor not desirable.
Rock and concrete anchors are prestressed tendons which can be bars or multiple strands. A portion of the length is bonded to rock or concrete by cement grout, resin, or fixed by a mechanical anchor. The upper portion, or free length, is left ungrouted for prestressing, but is grouted afterwards to lock in tension and protect against corrosion.