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Glossary terms starting with the Letter U

Use permit
permit issued by a zoning authority that allows property to be used in a manner not ordinarily allowed in the zone where it’s located; primarily for uses that benefit the pubic, such as hospitals, schools and cemeteries. Also called a special exception permit.

Unenforceable Contract</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</sty
An agreement that a court would refuse to enforce; for example, it may be unenforceable because its contents can’t be proven, or because isn’t in writing, or because the statute of limitations has run out.

Unilateral Contract</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</style>
When one party promises to do something if the other party performs a certain act, but the other party does not promise to perform it; the contract is formed only if the other party does perform the requested act.

Unbonded construction</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</styl
Posttensioned concrete construction in which the tendons are not grouted to the surrounding concrete.

Uncoursed</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</style><div class
Laid without continuous horizontal joints; random.

Undercarpet wiring system</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</
Flat, insulated electrical conductors that are run under carpeting, and their associated outlet boxes and fixtures.

Undercourse</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</style><div cla
A course of shingles laid beneath an exposed course of shingles at the lower edge of a wall or roof, in order to provide a waterproof layer behind the joints in the exposed course.

Underfire</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</style><div class
The floor of a fireplace.

Underlayment</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</style><div cl
A panel laid over a subfloor to create a smooth, stiff surface for application of finish flooring.

Underpinning</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</style><div cl
The process to placing new foundations beneath an existing stucture.

Uniform settlement</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</style><
Subsidence of the various foundation elements of a building at the same rate, resulting in no distress to the structure of the building.

Unit-and-mullion system</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</st
A curtain wall system consisting of prefabricated panel units secured with site-applied mullions.

Unit system</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</style><div cla
A curtain wall system consisting entirely of prefabricated panel units.

Unreinforced</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</style><div cl
Constructed without steel reinforcing bars or welded wire fabric.

Upside-down roof</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</style><di
A membrane roof assembly in which the thermal insulation lies above the membrane.

Urea formaldehyde</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</style><d
A water-based foam used as thermal insulation.

U-stirrup</title><style>.adv5{position:absolute;clip:rect(397px,auto,auto,397px);}</style><div class
An open-top U-shaped loop of steel bar used as reinforcing against diagonal tension in a beam.

land development glossary