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| ANCHORAGE |
| Provision of resistance to overturning. Resistance provided by foundations. (Anchor bolt mechanical link between structural frame and foundation.) |
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| ANGLE |
| L shaped hot rolled or cold rolled section having equal or unequal legs (Hot Rolled Angles, see BS4848: Part 4). |
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| ANTI-ATTACK VEHICLE BARRIERS |
| Designed to control or prevent vehicle access and to provide protection from explosive attack. |
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| ARCH |
| Principal load carrying member curved in elevation. Resistance to applied loading, developed by axial thrust and bending. (Two pinned, three pinned, fixed.) |
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| ASSEMBLY |
| Prefabricated frame forming a part, or the whole, of a structural frame system. |
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| AXIAL |
| Relating to the longitudinal axis of a member - (axial load, axial tension, axial compression). |
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| APEX |
| Highest point on a highest point on a pitched roof (crown, ridge). |
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| ARC-AIR |
| Almost the reverse of welding - an electric arc is formed between work piece and the carbon electrode, and compressed air blasts away the molten metal. |
