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| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
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| WALKWAY |
| A narrow footway supported by the main structure to provide access to a maintenance platform. |
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| WARREN GIRDER |
| A parallel chord triangulated frame with diagonal internal members. |
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| WASHER |
| A flat steel ring placed under a bolt head or nut to distribute pressure and avoid damage on tightening the connection. |
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| WEB |
| Central section of a H, I or J section, central vertical plate of a plate girder. |
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| WIND LOAD |
| The force on a structure due to wind pressure effects. (See British Standard CP3 Chapter 5.) |
