An armor structure includes first and second layers individually containing a plurality of i-beams. Individual i-beams have a pair of longitudinal flanges interconnected by a longitudinal crosspiece and defining opposing longitudinal channels between the pair of flanges. The i-beams within individu
An armor structure includes first and second layers individually containing a plurality of i-beams. Individual i-beams have a pair of longitudinal flanges interconnected by a longitudinal crosspiece and defining opposing longitudinal channels between the pair of flanges. The i-beams within individual of the first and second layers run parallel. The laterally outermost faces of the flanges of adjacent i-beams face one another. One of the longitudinal channels in each of the first and second layers faces one of the longitudinal channels in the other of the first and second layers. The channels of the first layer run parallel with the channels of the second layer. The flanges of the first and second layers overlap with the crosspieces of the other of the first and second layers, and portions of said flanges are received within the facing channels of the i-beams of the other of the first and second layers.
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We claim: 1. An armor structure configured as a barrier, comprising: first and second layers individually comprising a plurality of i-beams, individual i-beams comprising a pair of longitudinal flanges interconnected by a longitudinal crosspiece and defining opposing longitudinal channels between t
We claim: 1. An armor structure configured as a barrier, comprising: first and second layers individually comprising a plurality of i-beams, individual i-beams comprising a pair of longitudinal flanges interconnected by a longitudinal crosspiece and defining opposing longitudinal channels between the pair of flanges, the flanges having laterally outermost faces, the plurality of i-beams within individual of the first and second layers running parallel relative to one another with the laterally outermost faces of the flanges of adjacent i-beams facing one another, one of the longitudinal channels in each of the first and second layers facing one of the longitudinal channels in the other of the first and second layers; and the i-beam channels of the first layer running parallel with the i-beam channels of the second layer, the flanges of the i-beams of the first and second layers overlapping with the crosspieces of the other of the first and second layers and portions of said flanges being received within the facing channels of the i-beams of the other of the first and second layers. 2. The armor structure of claim 1 wherein the laterally outermost faces of the flanges of adjacent i-beams within at least one of the first and second layers contact one another. 3. The armor structure of claim 2 wherein the laterally outermost faces of the flanges of adjacent i-beams within each of the first and second layers contact one another. 4. The armor structure of claim 1 wherein the portions of the flanges of the i-beams of the first and second layers received within the facing channel of the other of the first and second layers contact the crosspieces of the other of the first and second layers. 5. The armor structure of claim 1 wherein the laterally outermost faces of the flanges of adjacent i-beams within each of the first and second layers contact one another, and the portions of the flanges of the i-beams of the first and second layers received within the facing channel of the other of the first and second layers contact the crosspieces of the other of the first and second layers. 6. The armor structure of claim 1 comprising a crosspiece lateral midpoint between the flanges of individual i-beams, the overlapping of the flanges of the i-beams of the first and second layers being centered within 25% of said midpoint as a function of crosspiece width between the flanges of individual i-beams. 7. The armor structure of claim 6 wherein the overlapping is centered within 10% of said midpoint. 8. The armor structure of claim 7 wherein the overlapping is centered within 1% of said midpoint. 9. The armor structure of claim 8 wherein the overlapping is at said midpoint. 10. The armor structure of claim 1 wherein the i-beams within individual of the first and second layers are of the same cross sectional size and shape. 11. The armor structure of claim 1 wherein all the i-beams within the first and second layers are of the same cross sectional size and shape. 12. The armor structure of claim 1 wherein, the laterally outermost faces of the flanges of adjacent i-beams within each of the first and second layers contact one another, and the portions of the flanges of the i-beams of the first and second layers received within the facing channel of the other of the first and second layers contact the crosspieces of the other of the first and second layers; the crosspieces comprise a lateral midpoint between the flanges of individual i-beams, the overlapping of the flanges of the i-beams of the first and second layers being centered within 10% of said midpoint as a function of width of the crosspiece between the flanges of individual i-beams; and the i-beams within the first and second layers are all of the same cross sectional size and shape. 13. The armor structure of claim 12 wherein the overlapping is centered within 1% of said midpoint. 14. The armor structure of claim 1 comprising first and second pairs of said first and second layers, the channels of the first pair being oriented at an angle to the channels of the second pair. 15. The armor structure of claim 14 wherein the angle is 90��+/-1��. 16. The armor structure of claim 14 comprising a metal layer received intermediate the first and second pairs. 17. The armor structure of claim 16 wherein the i-beams of the first and second pairs are made of metal, the metal layer being of greater hardness than hardness all metal of the i-beams of the first and second pairs. 18. The armor structure of claim 1 comprising a volcanic glass-comprising material received within at least one of the non-facing channels of the i-beams of the first and second layers. 19. The armor structure of claim 18 wherein the armor structure is configured to have a primary attack side, the volcanic glass-comprising material being received within the non-facing channel which faces the primary attack side of the first and second layer closest to the primary attack side. 20. The armor structure of claim 18 wherein the volcanic glass-comprising material comprises pumice. 21. The armor structure of claim 18 wherein the volcanic glass-comprising material comprises perlite. 22. The armor structure of claim 18 wherein the volcanic glass-comprising material comprises a polymer within which volcanic glass is received. 23. The armor structure of claim 18 wherein the volcanic glass-comprising material fills a majority of said non-facing channel. 24. The armor structure of claim 23 wherein the volcanic glass-comprising material fills at least 90% of said non-facing channel. 25. The armor structure of claim 1 wherein the armor structure is configured to have a primary attack side, an obscurant-generating layer received closer to the primary attack side than are the first and second layers, the obscurant-generating layer configured to generate an obscurant upon sufficient degree of heat to the armor structure. 26. The armor structure of claim 25 wherein the obscurant-generating layer comprises polycarbonate. 27. The armor structure of claim 1 comprising a layer comprising a plurality of elongated hollow tubes oriented parallel one another. 28. The armor structure of claim 27 wherein the hollow tubes comprise four planar exterior faces. 29. The armor structure of claim 27 wherein the hollow tubes comprise substantially right angle corners. 30. The armor structure of claim 29 wherein the hollow tubes are substantially square in cross-section. 31. The armor structure of claim 27 wherein the armor structure is configured to have a primary attack side, the first and second layers being received closer to the primary attack side than is the layer comprising the plurality of elongated hollow tubes. 32. The armor structure of claim 1 wherein the armor structure is configured as a securable door that can be opened and closed relative to a doorway. 33. The armor structure of claim 32 wherein the door and doorway are configured for securing with a plurality of metal locking pin and pin receiver pairs, individual of the pin receivers comprising an outer metal-comprising housing and an inner metal-comprising sleeve received within the outer housing, the inner sleeve comprising an opening therein sized to slidably receive one of the locking pins, the metal of the inner sleeve being softer than that of the housing. 34. The armor structure of claim 32 wherein the metal of the inner sleeve comprises copper and the metal of the outer housing comprises steel. 35. The armor structure of claim 32 wherein the door comprises the pin receivers. 36. An armor structure, comprising: first and second layers individually comprising a plurality of i-beams, individual i-beams comprising a pair of longitudinal flanges interconnected by a longitudinal crosspiece and defining opposing longitudinal channels between the pair of flanges, the flanges having laterally outermost faces, the plurality of i-beams within individual of the first and second layers running parallel relative to one another with the laterally outermost faces of the flanges of adjacent i-beams facing and contacting one another, one of the longitudinal channels in each of the first and second layers facing one of the longitudinal channels in the other of the first and second layers; the i-beam channels of the first layer running parallel with the i-beam channels of the second layer, the flanges of the i-beams of the first and second layers overlapping with the crosspieces of the other of the first and second layers and portions of said flanges being received within the facing channels of the i-beams of the other of the first and second layers and contacting the cross pieces of the other of the first and second layers; the armor structure being configured to have a primary attack side, volcanic glass-comprising material being received in the non-facing channels of the i-beams of the first and second layers which faces the primary attack side of the first and second layer closest to the primary attack side; and a layer comprising a plurality of elongated hollow tubes oriented parallel one another, the first and second layers being received closer to the primary attack side than is the layer comprising the plurality of elongated hollow tubes. 37. The armor structure of claim 36 comprising first and second pairs of said first and second layers, the channels of the first pair being oriented at 90��+/-1�� to the channels of the second pair. 38. The armor structure of claim 36 wherein the volcanic glass-comprising material comprises a polymer within which volcanic glass is received. 39. An armor structure, comprising: first and second layers individually comprising a plurality of metal i-beams, individual i-beams comprising a pair of longitudinal flanges interconnected by a longitudinal crosspiece and defining opposing longitudinal channels between the pair of flanges, the flanges having laterally outermost faces, the plurality of i-beams within individual of the first and second layers running parallel relative to one another with the laterally outermost faces of the flanges of adjacent i-beams facing and contacting one another, one of the longitudinal channels in each of the first and second layers facing one of the longitudinal channels in the other of the first and second layers; the i-beam channels of the first layer running parallel with the i-beam channels of the second layer, the flanges of the i-beams of the first and second layers overlapping with the crosspieces of the other of the first and second layers and portions of said flanges being received within the facing channels of the i-beams of the other of the first and second layers and contacting the cross pieces of the other of the first and second layers, a crosspiece lateral midpoint between the flanges of individual i-beams, the overlapping of the flanges of the i-beams of the first and second layers being centered within 10% of said midpoint as a function of crosspiece width between the flanges of individual i-beams; the armor structure being configured to have a primary attack side, volcanic glass-comprising material being received in the non-facing channels of the i-beams of the first and second layers which faces the primary attack side of the first and second layer closest to the primary attack side; an obscurant-generating layer received closer to the primary attack side than are the first and second layers, the obscurant-generating layer configured to generate an obscurant upon sufficient degree of heat to the armor structure; a layer comprising a plurality of elongated hollow metal tubes oriented parallel one another, the first and second layers being received closer to the primary attack side than is the layer comprising the plurality of elongated hollow tubes; and at least two metal layers received farther from the primary attack side than is the layer comprising the plurality of elongated hollow metal tubes, one of the two metal comprising a metal that is softer than metal of each of the metal i-beams, the elongated hollow metal tubes, and another of the two metal layers. 40. The armor structure of claim 39 wherein the overlapping is centered within 1% of said midpoint. 41. The armor structure of claim 40 wherein the overlapping is at said midpoint. 42. The armor structure of claim 39 comprising first and second pairs of said first and second layers, the channels of the first pair being oriented at an angle of 90��+/-1�� to the channels of the second pair. 43. The armor structure of claim 42 comprising an intermediate metal layer received intermediate the first and second pairs. 44. The armor structure of claim 43 wherein the intermediate metal layer is of greater hardness than hardness of the metal of the i-beams of the first and second pairs. 45. The armor structure of claim 39 wherein the volcanic glass-comprising material comprises a polymer within which volcanic glass is received. 46. The armor structure of claim 39 wherein the volcanic glass-comprising material fills a majority of said non-facing channel. 47. The armor structure of claim 46 wherein the volcanic glass-comprising material fills at least 90% of said non-facing channel.
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