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2. Guard stone - Wikipedia

   en.wikipedia.org/wiki/Guard_stone

   Obsolete cannons were often used as wheel guards in the Netherlands, such as for the Catherine's gate in Dordrecht. A guard stone, jostle stone or chasse-roue (French lit. "wheel chaser"), is a projecting metal, concrete, or stone exterior architectural element located at the corner and/or foot of gates, portes-cochères, garage entries, and walls to prevent damage from vehicle tires and wheels.

3. Wall stud - Wikipedia

   en.wikipedia.org/wiki/Wall_stud

   sill - a stud sized member forming the base of a window assembly or the base of wall. mudsill - a stud sized member that forms the base of a wall and has been treated against insects and decay. top plate or double top plate - a stud sized member that forms the top of the wall. In cases where other members must bear or brace on the top of the ...

4. Traffic barrier - Wikipedia

   en.wikipedia.org/wiki/Traffic_barrier

   Traffic barrier with a pedestrian guardrail behind it. Traffic barriers (known in North America as guardrails or guard rails, [1] in Britain as crash barriers, [2] and in auto racing as Armco barriers [3]) keep vehicles within their roadway and prevent them from colliding with dangerous obstacles such as boulders, sign supports, trees, bridge abutments, buildings, walls, and large storm drains ...

5. SAFER barrier - Wikipedia

   en.wikipedia.org/wiki/SAFER_barrier

   The Steel And Foam Energy Reduction Barrier (SAFER Barrier), sometimes generically referred to as a soft wall, is a technology found on oval automobile race tracks and high-speed sections of road and street tracks, intended to absorb and reduce kinetic energy during the impact of a high-speed crash, and thus, lessen injuries sustained to ...

6. Tie (cavity wall) - Wikipedia

   en.wikipedia.org/wiki/Tie_(cavity_wall)

   Since ties in a cavity wall are typically made of metal (iron or steel), they are prone to corrode over time. When metal corrodes, it expands its size, causing ties to lift up from the brickwork . Cracks caused by vertical loads leave parts of buildings vulnerable to corrosion, such as eaves and gable walls above purlin positions, or placed ...

7. Flood barrier - Wikipedia

   en.wikipedia.org/wiki/Flood_barrier

   The Oosterscheldekering contains 62 steel doors, each 42 metres (138 ft) wide The Maeslantkering closes the main entrance to the Port of Rotterdam, the largest port in Europe. A flood barrier , surge barrier or storm surge barrier is a specific type of floodgate , designed to prevent a storm surge or spring tide from flooding the protected area ...