- The initial stage of a plumbing, electrical, heating, carpentry, and/or other project, when all components that won't be seen after the second finishing phase are assembled. See also Heat Rough, Plumbing Rough, and Electrical Rough.

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Sabin

Measure of sound absorption of a surface, equivalent to 1 sq. ft. of a perfectly absorptive surface.

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Run, roof

The horizontal distance from the eaves to a point directly under the ridge. One half the span.

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Run, stair

the horizontal distance of a stair tread from the nose to the riser.

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Safing

Fire stop material in the space between floor slab and curtain wall in multi-story construction.

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Sanitary Sewage

Waste material containing human excrement and other liquid wastes.

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Saddle

A small second roof built behind the back side of a fireplace chimney to divert water around the chimney. Also, the plate at the bottom of someâ€”usually exteriorâ€”door openings. Sometimes called a threshold. A ridge in a roof deck that divides two sloping parts, diverting water toward roof drains.

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Sack mix

The amount of Portland cement in a cubic yard of concrete mix. Generally, 5 or 6 sack is required in a foundation wall.

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Sand float finish

Lime that is mixed with sand, resulting in a textured finish on a wall.

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Sapwood

The wood near the outside of the log just under the bark.

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Safing Off

Installation of fire safety insulation around floor perimeters, between floor slab and spandrel panels. Insulation helps retain integrity of fire resistance ratings.

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Sanitary Sewer

A sewer system designed for the collection of waste water from the bathroom, kitchen and laundry drains, and is usually not designed to handle storm water. A sewer that receives sanitary sewage without the infusion of other water such as rain, surface water, or other clear water drainage.

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Sandstone

A sedimentary rock formed from sand.

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Sales contract

A contract between a buyer and seller which should explain: (1) What the purchase includes, (2) What guarantees there are, (3) When the buyer can move in, (4) What the closing costs are, and (5) What recourse the parties have if the contract is not fulfilled or if the buyer cannot get a mortgage commitment at the agreed upon time.