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 structure comprising:
at least one bollard; and
a base comprising opposed ends and a plurality of structural members which intersect and are tied together, for each bollard of the bollard structure at least one first structural member extending from a first of the opposed ends of the base to a second of the opposed ends of the base in a first direction intersecting with the opposed ends, and at least one structural member extending to intersect with the at least one first structural member;
each bollard being secured to at least one of the at least one first structural member and the at least one structural member of the base for the respective bollard and extending upwardly from the base so as to transmit forces applied to the at least one bollard to the base;
wherein the base is configured to be mounted in a shallow excavation with the at least one bollard extending above grade; and
wherein the at least one first structural member or the at least one structural member or both are configured or tied together to retain within the base supporting media introduced into the base when the base is mounted in the excavation such that the rotation is resisted of a bollard or bollards and the base from an impact against the bollard or bollards.
2. The bollard structure of claim 1 , wherein at least one of the opposed ends is formed by a structural member to which an end of the at least one first structural member is secured.
3. The bollard structure of claim 1 , wherein the intersecting structural members have axes that extend parallel to a plane of the base.
4. The bollard structure of claim 1 , wherein the base has a height of 3 inches to 14 inches.
5. The bollard structure of claim 1 , wherein the plurality of structural members comprise one or more tubular members.
6. The bollard structure of claim 5 , wherein at least one tubular member comprises a pipe.
7. The bollard structure of claim 5 , wherein at least one tubular member comprises a tube.
8. The bollard structure of claim 5 , wherein at least one tubular member comprises an angle.
9. The bollard structure of claim 5 , wherein at least one tubular member comprises a channel.
10. The bollard structure of claim 1 , wherein the plurality of structural members comprises at least one tube.
11. The bollard structure of claim 1 , wherein the plurality of structural members comprises at least one pipe.
12. The bollard structure of claim 1 , wherein the plurality of structural members comprises at least one angle.
13. The bollard structure of claim 1 , wherein the plurality of structural members comprises at least one channel.
14. The bollard structure of claim 1 , wherein the plurality of structural members comprises at least one plate.
15. The bollard structure of claim 1 , wherein the plurality of structural members comprise structural steel members.
16. A bollard structure comprising:
a plurality of bollards; and
a base comprising opposed ends and a plurality of structural members which intersect and are tied together, for each bollard of the bollard structure at least one first structural member extending from a first of the opposed ends of the base to a second of the opposed ends of the base in a first direction intersecting with the opposed ends, and at least one structural member extending to intersect with the at least one first structural member;
each of the plurality of bollards being secured to at least one of the at least one first structural member and the at least one structural member of the base for the respective bollard and extending upwardly from the base so as to transmit forces applied to the at least one bollard to the base;
wherein the base is configured to be mounted in a shallow excavation with the plurality of bollards extending above grade of the excavation; and
wherein the at least one first structural member or the at least one structural member or both are configured or tied together to retain within the base supporting media introduced into the base when the base is mounted in the excavation such that the rotation is resisted of a bollard or bollards and the base from an impact against the bollard or bollards.
17. The bollard structure of claim 16 , wherein at least one of the opposed ends is formed by a structural member to which an end of the at least one first structural member is secured.
18. The bollard structure of claim 16 , wherein the bollard structure is configured to resist impact from a direction of expected impact and the first direction is parallel to the direction of expected impact, and wherein each of the plurality of bollards is secured to at least one structural member that extends in the first direction.
19. The bollard structure of claim 16 wherein the intersecting structural members have axes that extend parallel to a plane of the base.
20. The bollard structure of claim 16 wherein the base has a height of 3 inches to 14 inches.
21. The bollard structure of claim 16 , wherein the plurality of structural members comprise one or more tubular members.
22. The bollard structure of claim 21 , wherein at least one tubular member comprises a pipe.
23. The bollard structure of claim 21 , wherein at least one tubular member comprises a tube.
24. The bollard structure of claim 21 , wherein at least one tubular member comprises an angle.
25. The bollard structure of claim 21 , wherein at least one tubular member comprises a channel.
26. The bollard structure of claim 16 , wherein the plurality of structural members comprises at least one tube.
27. The bollard structure of claim 16 , wherein the plurality of structural members comprises at least one pipe.
28. The bollard structure of claim 16 , wherein the plurality of structural members comprises at least one angle.
29. The bollard structure of claim 16 , wherein the plurality of structural members comprises at least one channel.
30. The bollard structure of claim 16 , wherein the plurality of structural members comprises at least one plate.
31. The bollard structure of claim 16 , wherein the plurality of structural members comprise structural steel members.
32. The bollard structure of claim 16 , comprising a rebar grillage comprising intersecting and tied together rebar members extending coextensively with at least a portion of the base that includes a structural member to which a bollard is secured.
33. A bollard structure comprising:
a plurality of bollards; and
a base comprising opposed ends and a plurality of members which intersect and are tied together, for each bollard of the bollard structure at least one first structural member extending from a first of the opposed ends of the base to a second of the opposed ends of the base in a first direction intersecting with the opposed ends, and at least one structural member extending to intersect with the at least one first structural member;
each of the plurality of bollards being secured to at least one of the at least one first structural member and the at least one structural member of the base for the respective bollard and extending upwardly from the base so as to transmit forces applied to the at least one bollard to the base;
at least one of the plurality of members that extend parallel to the ends of the base extending between a structural member to which a first bollard is secured and a structural member to which a second bollard adjacent to the first bollard is secured;
wherein the base is configured to be mounted in a shallow excavation with the plurality of bollards extending above grade of the excavation; and
wherein the at least one first structural member or the at least one structural member or both are configured or tied together to retain within the base supporting media introduced into the base when the base is mounted in the excavation such that the rotation is resisted of a bollard or bollards and the base from an impact against the bollard or bollards.
34. The bollard structure according to claim 33 , wherein the at least one of the plurality of members that extend between a structural member to which a first bollard is secured and a structural member to which a second bollard adjacent to the first bollard is secured comprises a structural member.
35. The bollard structure according to claim 33 , wherein the at least one of the plurality of members that extend between a structural member to which a first bollard is secured and a structural member to which a second bollard adjacent to the first bollard is secured comprises a rebar member.