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| STROKES PER MINUTE (SPM)
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Straight-line sanders are rated in strokes per minute (spm), which is the number of back-and-forth strokes the pad makes in a minute. |
| STRONGBACK
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(1) Reinforcing structural piece. (2) Steel beam, etc. which is used as a part of rigging to hoist an object. |
| STROP
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(1) Leather strip used to sharpen a blade. (2) Band that supports a pulley block. |
| STRUCK CAPACITY
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A full load of a bucket on a piece of earthmoving equipment when filled to the rim. |
| STRUCK JOINT
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Mortar joint with indentations at the bottom of the joint, grooved with the edge of a trowel. |
| STRUCTURAL
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Pertaining to the solid part of a structure that carries the load. |
| STRUCTURAL ANALYSIS
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Evaluation of the dimensions of a building to determine its ability to meet the needs of the occupant. |
| STRUCTURAL ATTACHMENT
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An attachment, appended to an object, to help carry some of the load placed on that object. |
| STRUCTURAL BLOCK
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Masonry block, with a compression strength of between 1800 to 3000 psi, usable in a wall that will carry a structural load. |
| STRUCTURAL CLAY TILE
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Fired clay block tiles that are durable, fireproof, lightweight, etc. but that are not used as often as concrete block. |
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