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| NET AREA |
| The net area of a section is the gross area less deductions for holes. |
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| NETURAL AXIS (ELASTIC) |
| An axis passing through the centroid of the section normal to the plane of bending. |
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| NORTH LIGHT ROOF TRUSS |
| Asymmetrical pitched roof truss, with glazing on the steeper slope. |
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| NOTCH |
| A fabrication process to cut away a small section of one member to ensure a connection to be made to another member of the same size or to maintain level flanges. |
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| 'N' GIRDER |
| Parallel chord lattice frame with internal panels formed with verticals and single diagonal tension members in each panel. |
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| NUT |
| Hexagonal part of a fastener assembly which has been drilled and tapped to screw on to the shank of the fastener. |
