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| Sr. | Term | Definition |
| 1 | Negative Moment | A condition of flexture (Bending) in which top fibers of a horizontally placed member (Beam), or external fibers of a vertically placed exterior member (Column), are subjected to tensile stresses. |
| 2 | Neoprene | Synthetic rubber resistant to chemical compound, oil, light, etc. |
| 3 | Neutral Surface | In a beam bent downwards, the line or surface of zero stress, below which all fibres are stressed in tension and above which they are compressed. The neutral axis passes through the center of area of the section (Centroid), if it is of homogeneous material. |
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