|
|
| Spruce, sitka
|
|
Very tough and strong wood which is lightweight and moderately hard. |
| Spud
|
|
To remove the top surfacing of a roof by scraping it with special tools called spud bars or power spudders. |
| Spud bar
|
|
A long-handle tool with a stiff flat blade on one end (usually 4" or 6" wide) that is used to scrape and remove the top surfacing of a roof down to the membrane. |
| Spunbond
|
|
Describes nonwoven fabrics made from continuously bonded fibers. |
| Spunlaced
|
|
Describes nonwoven fabrics that have the fibers intertwined by water-jet method. |
| Spur gear
|
|
Spur gears have teeth that are cut directly across the face of the gear for a smooth, efficient transfer of power. |
| Sputtering
|
|
A process used to apply photovoltaic semi-conductor material to a substrate by a physical vapor deposition process where high-energy ions are used to bombard elemental sources of semiconductor material, which eject vapors of atoms that are then deposited in thin layers on a substrate. |
| Square
|
|
(1) Construction measure in which one square equals 100 square feet of material. (2) A plane figure with four equal sides and four right angles. (3) An instrument with two sides that form an angle of 90 degrees, used for drawing or testing at right angles. (4) The product of a number multiplied by itself. (5) An area bounded by streets or buildings on all four sides. |
| Square boxes
|
|
Square shaped electrical junction boxes. |
| Square drive screw
|
|
Screw that has a square indention in the head and is used when a set screw must carry a load. |
|
|
|
|
|
