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  2. Guard rail - Wikipedia

    en.wikipedia.org/wiki/Guard_rail

    An example of a common residential guard rail (US) handrail (Brit.) is a wood railing around a deck or patio. In the US this is typically built on-site from pressure treated lumber thus featuring a simplistic design of vertical baluster spaced every 3.5 inches (8.9 cm) demonstrating compliance with Building Codes (Standards).

  3. Bollard - Wikipedia

    en.wikipedia.org/wiki/Bollard

    Bollards are used to protect buildings and people in public spaces from car ramming attacks [21] and accidental collisions. Related protections against deliberate attacks are wedge barriers and archer barriers. [22] The bollards are effective protection against deliberate attacks if properly deployed and maintained.

  4. Removable bolt - Wikipedia

    en.wikipedia.org/wiki/Removable_bolt

    Removable bolts have been designed for particular climbing and industrial circumstances. ClimbTech's Kinder Edition Removable Bolt was designed for climber Joe Kinder, who required an RB that could be used on particularly dirty and moist rock. The additional surface area of the Kinder Edition RB provides better friction in these circumstances ...

  5. Thread-locking fluid - Wikipedia

    en.wikipedia.org/wiki/Thread-locking_fluid

    Thread-locking fluid or threadlocker is a single-component adhesive, applied to the threads of fasteners such as screws and bolts to prevent loosening, leakage, and corrosion. Most thread-locking formulas are methacrylate -based and rely on the electrochemical activity of a metal substrate to cause polymerization of the fluid.

  6. Permeable paving - Wikipedia

    en.wikipedia.org/wiki/Permeable_paving

    Permeable pavement is commonly used on roads, paths and parking lots subject to light vehicular traffic, such as cycle-paths, service or emergency access lanes, road and airport shoulders, and residential sidewalks and driveways.

  7. Bank vault - Wikipedia

    en.wikipedia.org/wiki/Bank_vault

    A time lock is a clock that prevents the vault's door from opening until a specified number of hours have passed. This is still the "theft proof" lock system that Sargent invented in the late nineteenth century. Such locks are manufactured by only a few companies worldwide. The locking system is supplied to the vault manufacturer preassembled.

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