Vehicle barrier fence
An example of a vehicle barrier system for arresting an impacting vehicle of substantial mass within a selected distance of the fence includes a pair of terminal posts positioned in and secured to the ground in a spaced apart relationship; at least three cables, each cable having opposing terminal ends hingedly connected respectively to each of the terminal posts, the at least three cables held in tension a distance above a grade of the ground and vertically spaced apart from one another in relation to the grade; and a line post secured in the ground and positioned between the pair of terminal posts, the line post holding a portion of each of the cables.
1. A vehicle barrier fence for arresting an impacting vehicle of substantial mass within a selected distance of the fence, the fence comprising:
a pair of terminal posts positioned in and secured to the ground in a spaced apart relationship;
a cable having opposing terminal ends hingedly connected respectively to each of the terminal posts, the cable held in tension a distance above a grade of the ground between the pair of terminal posts in a manner such that an identified portion of the impacting vehicle is stopped within a selected distance of the cable; and
a line post positioned between the pair of terminal posts, the line post comprising an internal cavity and a transverse slot formed through opposing sidewalls of the line post substantially perpendicularly to the vertical axis of the line post, wherein the cable extends through the transverse slot.
2. The fence of claim 1 , wherein the selected distance is approximately 36 inches for a vehicle having a mass of at least about 15,000 pounds and traveling at a speed of at least about 30 mph upon impact with the fence.
3. The fence of claim 1 , wherein the selected distance is approximately 36 inches for a vehicle having a mass of at least about 15,000 pounds and traveling at a speed of at least about 40 mph upon impact with the fence.
4. The fence of claim 1 , wherein the selected distance is approximately 36 inches for a vehicle having a mass of at least about 15,000 pounds and traveling at a speed of at least about 50 mph upon impact with the fence.
5. The fence of claim 1 , further comprising a member secured on the cable at a position disposed in the internal cavity of the line post.
6. The fence of claim 5 , wherein the member is held substantially in place with respect to the line post positioning the cable proximate the center of the transverse slot.
7. The fence of claim 1 , further comprising:
a stop positioned in the internal cavity of the line post;
a trap formed in the internal cavity of the line post between the transverse slot in the opposing sidewalls and a face of the line post; and
a member secured to the cable, the member disposed in the trap.
8. The fence of claim 1 , wherein the terminal post comprises an internal cavity and the terminal end of the cable is disposed in the internal cavity.
9. The fence of claim 1 , wherein the terminal end of the cable is hingedly connected to the terminal post at a position in an internal cavity of the terminal post.
10. The fence of claim 7 , wherein the selected distance is approximately 36 inches for a vehicle having a mass of at least about 15,000 pounds and traveling at a speed of at least about 30 mph upon impact with the fence.
11. The fence of claim 1 , wherein the line post is rectangular.
12. The fence of claim 5 , wherein the selected distance is approximately 36 inches or a vehicle having a mass of at least about 15,000 pounds and traveling at a speed of at least about 30 mph upon impact with the fence.
13. The fence of claim 7 , wherein the selected distance is approximately 36 inches for a vehicle having a mass of at least about 15,000 pounds and traveling at a speed of at least about 50 mph upon impact with the fence.
14. A vehicle barrier fence for arresting an impacting vehicle of substantial mass within a selected distance of the fence, the fence comprising:
a pair of terminal posts positioned in and secured to the ground in a spaced apart relationship;
a cable having opposing terminal ends hingedly connected respectively to each of the terminal posts via a spelter socket, the cable held in tension a distance above a grade of the ground between the pair of terminal posts in a manner such that an identified portion of the impacting vehicle is stopped within a selected distance of the cable; and
a line post positioned between the pair of terminal posts, the line post comprising an internal cavity and a transverse slot formed through opposing sidewalls of the line post substantially perpendicularly to the vertical axis of the line post, wherein the cable extends through the transverse slot.
15. The fence of claim 14 , further comprising a member secured on the cable at a position disposed in the internal cavity of the line post.
16. The fence of claim 15 , wherein the selected distance is approximately 36 inches for a vehicle having a mass of at least about 15,000 pounds and traveling at a speed of at least about 30 mph upon impact with the fence.
17. The fence of claim 15 , wherein the member is held substantially in place with respect to the line post positioning the cable proximate the center of the transverse slot.
18. The fence of claim 14 , further comprising:
a stop positioned in the internal cavity of the line post;
a trap formed in the internal cavity of the line post between the transverse slot in the opposing sidewalls and a face of the line post; and
a member secured to the cable, the member disposed in the trap.
19. The fence of claim 15 , wherein the selected distance is approximately 36 inches for a vehicle having a mass of at least about 15,000 pounds and traveling at a speed of at least about 30 mph upon impact with the fence.
20. The fence of claim 18 , wherein the selected distance is approximately 36 inches for a vehicle having a mass of at least about 15,000 pounds and traveling at a speed of at least about 50 mph upon impact with the fence.