Etymology. The term is probably related to bole, meaning a tree trunk. The earliest citation given by the Oxford English Dictionary (referring to a maritime bollard) dates from 1844, although a reference in the Caledonian Mercury in 1817 describes bollards as huge posts.
How do you mount bollards?
- Install a concrete or cement base to keep the bollard in place.
- Provide space for a concrete base and anchor casting.
- Pour the concrete.
- Place the bollard over the anchor casting.
- Thread a rod through the base and tighten for extra integrity.
What does bollard mean in English?
Definition of bollard 1 : a post of metal or wood on a wharf around which to fasten mooring lines. 2 : bitt sense 1. 3 chiefly British : any of a series of short posts set at intervals to delimit an area (such as a traffic island) or to exclude vehicles.
What is a bollard base?
Bollards protect key elements of your buildings from damage, but impact from lift trucks can damage bollards and your slabs and pavements. The PNA Bollard Base protects your investment by allowing the bollard to fail 3-4 inches above the weld while leaving the Bollard Base intact.
How do you anchor a bollard?
To install onto asphalt, a section of asphalt should be cut out and replaced with a concrete footing at least 16″ deep and about 24″ x 24”wide. The bollard can then be secured using the standard concrete anchoring procedure using 5/8” wedge, drop in, or sleeve anchors minimum 4”, and a masonry drill.
How do you place a bollard?
Ideally, bollards should be placed 1.5 feet back from a curb where cars are allowed to park. This makes room for passenger side doors to open and space for passengers to disembark. If there is no vehicle parking allowed beside the bollards, they can be installed close to the curb.
How deep should a bollard be buried?
18 to 24 inches
Do bollards need to be filled with concrete?
Don't place a perfectly good bollard in front of your store to protect your valuable assets only to fill it with cement. Not only will it weaken the bollard, in a couple of months, the rust that forms will leave ugly stains on your front sidewalk.
How far should bollards be placed?
It's recommended that bollards designed to regulate traffic flow be spaced no less than 3 feet apart in order to satisfy the accessibility requirements of the Americans With Disability Act, but no more than 5 feet apart in order to block the minimum width of a vehicle.
How do you size a bollard?
1. Measure the exact bollard circumference (distance around the outside of bollard) with a flat tape measure. 2. Divide the circumference by 3.14 to determine the bollard's outside diameter.
What is concrete bollard?
These round or cylinder shaped bollards are constructed of steel rebar encased in concrete to provide a strong appearance and help guide traffic flow. You can choose from a variety of textures, colors and finishes. ... These concrete bollards usually can be produced and shipped in 4 to 6 weeks.
What is a precast bollard?
Precast concrete bollards are reinforced with steel for high-impact security. Precast concrete bollards offer a unique combination of design and protection. Concrete bollards are available in varying styles and heights to complement a range of architectural and landscape styles.