Anti-ram system and method of installation
An anti-ram system and method of construction having a shallow mounted base pad from which extend a plurality of bollards. Very little or only a shallow excavation is required for the base of the bollard system, which can be partially or fully assembled prior to bringing it to the installation site. The shallow mounting pad or base of the bollard system of this invention may be formed or constructed in various ways and of various materials, and in various configurations. The shallow mounting pad or base is constructed so as to have considerable mass.
1. A bollard assembly comprising:
at least one bollard comprising a hollow tubular member having an upper and a lower end,
a base member formed of a plurality of hollow tubular base members which are secured to each other, and intersect to form a grid, said at least one bollard secured to said base member at an intersection of said tubular base members, so as to project upwardly from said tubular base members.
2. The bollard assembly of claim 1 , wherein axes of said plurality of tubular base members lie in the same plane.
3. The bollard assembly of claim 1 , wherein a plurality of holes are formed in said plurality of hollow tubular base members, and said plurality of hollow tubular base members and said hollow tubular member forming said at least one bollard are filled with a material to add weight and strength to said bollard assembly.
4. The bollard assembly of claim 3 wherein said material to add weight and strength is concrete.
5. The bollard assembly of claim 4 , wherein said base member includes a rebar grid.
6. The bollard assembly of claim 1 , wherein said base member includes rebar grids.
7. The bollard assembly of claim 6 , wherein a first rebar grid is located below said tubular base members and a second rebar grid is located above said tubular base members.
8. The bollard assembly of claim 7 , wherein said rebar grids and said tubular base members are encapsulated in concrete.
9. The bollard assembly of claim 1 , wherein said base member is placed in a shallow recess, such that a top of said base member is essentially flush with an adjoining surface.
10. The bollard assembly of claim 1 , wherein said base member is less that eighteen inches thick.
11. The bollard assembly of claim 1 , wherein two or more bollards are supported on said base member.
12. The bollard assembly of claim 1 , wherein said bollard is a hollow cylindrical member.
13. The bollard assembly of claim 12 , wherein said hollow cylindrical member is filled with a heavy material.
14. The bollard assembly of claim 12 , wherein said hollow cylindrical member is filled with concrete.
15. The bollard assembly of claim 1 , wherein said hollow tubular base members are rectangular in cross-section, having a top, bottom and sides.
16. The bollard assembly of claim 1 , wherein tops of said tubular base members are provided with holes through which said tubular members are filled with a heavy material.
17. The bollard assembly of claim 16 , wherein said heavy material is concrete.
18. A bollard assembly comprising:
a base member formed of a grid of interconnected tubular members,
two or more bollards, each having upper and lower ends,
said lower end of each of said two or more bollards being secured to said base member at an intersection of two of said tubular members.
19. The bollard assembly of claim 18 , wherein, for each said bollard:
the lower end of said bollard is received in an aperture in a rectangular tubular member, said aperture being located closer to one end of the tubular member than the other,
the base member including a portion which extends from the lower end of the bollard in the direction of the expected impact on the bollard,
the base member including a member attached to the lower end of the bollard and extending perpendicular to the bollard in the expected direction of impact on the bollard,
the member including a first member extending in the expected direction of impact on the bollard, said first member extending a greater distance on the side of the bollard opposite the side of expected impact, than on the side of expected impact, and a second member extending generally perpendicular to the first member from the lower end of the bollard.
20. A bollard assembly comprising:
a plurality of bollards, each having a lower end and an upper end, and
a base member comprising,
a grid of tubular members comprising,
a plurality of first tubular members, each of said first tubular members extending perpendicular to one of said plurality of bollards, and having holes therein through which said lower end of said one bollard extends, said first tubular members extending in the direction of expected impact on said bollards, said first tubular members extending a greater distance on the opposite side of the one bollard from the expected side of impact, than on the side of expected impact, and
a plurality of second tubular members, each of said second tubular members extending perpendicular to said first tubular members and aligned with the holes in the first tubular members.
21. The bollard system of claim 20 , wherein said bollards, and first and second tubular members are formed of steel.
22. The bollard system of claim 20 , wherein said bollards are formed of cylindrical hollow members.
23. The bollard system of claim 22 , wherein said bollards are formed of steel.
24. The bollard system of claim 21 , wherein said bollards are filled with a heavy strengthening material.
25. The bollard system of claim 24 , wherein said heavy strengthening material is concrete.
26. The bollard system of claim 20 , wherein said plurality of first tubular members are formed from rectangular tubular members.
27. The bollard system of claim 26 , wherein said plurality of first tubular members are formed of steel.
28. The bollard system of claim 26 , wherein at least one hole is provided in a top surface of each of said first tubular members, through which a heavy strengthening material may be introduced into said first tubular members.
29. The bollard system of claim 20 , wherein said first tubular members are filled with a heavy strengthening material.
30. The bollard system of claim 29 , wherein said heavy strengthening material is concrete.
31. The bollard system of claim 20 , wherein said second tubular members are formed from rectangular tubular members.
32. The bollard system of claim 31 , wherein said plurality of second tubular members are formed of steel.
33. The bollard system of claim 31 , wherein at least one hole is provided in a top surface of each of said second tubular members, through which a heavy strengthening material may be introduced into said second tubular members.
34. The bollard system of claim 20 , wherein said second tubular members are filled with a heavy strengthening material.
35. The bollard system of claim 34 , wherein said heavy strengthening material is concrete.