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| GALVANISE |
| Process for coating steel sections with zinc in order to provide corrosion protection from aggressive environments. (Hot dipped, spun galvanizing.) |
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| GANTRY |
| A steel structure for supporting an overhead crane assembly. |
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| GANTRY GIRDER |
| Beam supporting an overhead traveling crane. (Crane beam.) |
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| GAS SHIELDED WELDING |
| An automatic or semi-automatic welding process where the arc is shielded by an inert gas. (MIG=metal inert gas, CO2=Carbon dioxide) |
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| GRADE 4.6 BOLTS |
| Bolts with a UTS of 400 N/mm2 and a yield stress which is 60% of this. |
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| GRADE 8.8 BOLTS |
| Bolts with a UTS of 800 N/mm2 and a yield stress which is 80% of this. |
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| GRADIENT |
| The fall or rise per unit length of land, railway, road. |
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| GRID |
| A rectangular layout of straight lines used for locating points on a plan. (Grid lines for stanchion layout.) |
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| GRIP LENGTH BOLT |
| A layer of parallel steel beams set on a concrete foundation in order to spread heavy concreted loads over a wide area. (Grillage beam, two tier grillage.) |
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| GROUT |
| A mixture of Portland cement and water. (Grouts are used to fill the space between the underside of a base plate and the top of a concrete foundation.) |
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| GUSSET |
| Fabricated plates used to make joints between members forming a truss or lattice frame. (Bolted gusset, welded gusset.) |
