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A manhole cover is a removable plate forming the lid over the opening of a manhole, an opening large enough for a person to pass through that is used as an access point for an underground vault or pipe. It is designed to prevent anyone or anything from falling in, and to keep out unauthorized persons and material.
Hard barriers are fixed into the ground as a bollard or gate, removable on stands, or clipped to a structure. Regardless of the barrier type, the components and overall assembly will be similar. Regardless of the barrier type, the components and overall assembly will be similar.
Small mushroom-bollards are found on lock approaches for advancing boats waiting for lock access. [ citation needed ] A conventional measure of the pulling or towing power of a watercraft is known as bollard pull , and is defined as the measured force exerted by a vessel under full power on a shore-mounted bollard through a tow-line.
Bollard sleeves in various alloys or finishes are designed to cover security bollards to enhance their visual attractiveness. [citation needed] U-shaped bollards are typically used for the protection of equipment and are common in areas that need coverage over a wider area than of a normal bollard, such as fuel stations and bike lanes.
Everything in American health care seems to cost more, across the board, year after year. Millions of insurance claims get denied. Medical debt routinely drives patients into bankruptcy.
A 17-year-old cheerleader from California was stabbed to death just days before Christmas — and police say they've arrested an "acquaintance" in connection with the case. On Friday, Dec. 20, at ...
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