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two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-south-1","startNode":"bulkhead-south-1-a","endNode":"bulkhead-south-1-b","section":{"designation":"W16X26","family":"wide-flange"},"kind":"beam","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-south-2","startNode":"bulkhead-south-2-a","endNode":"bulkhead-south-2-b","section":{"designation":"W16X31","family":"wide-flange"},"kind":"beam","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-cross-1","startNode":"bulkhead-cross-1-a","endNode":"bulkhead-cross-1-b","section":{"designation":"W16X26","family":"wide-flange"},"kind":"beam","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-cross-2","startNode":"bulkhead-cross-2-a","endNode":"bulkhead-cross-2-b","section":{"designation":"W16X26","family":"wide-flange"},"kind":"beam","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-cross-3","startNode":"bulkhead-cross-3-a","endNode":"bulkhead-cross-3-b","section":{"designation":"W16X26","family":"wide-flange"},"kind":"beam","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-cross-4","startNode":"bulkhead-cross-4-a","endNode":"bulkhead-cross-4-b","section":{"designation":"W16X26","family":"wide-flange"},"kind":"beam","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-cross-5","startNode":"bulkhead-cross-5-a","endNode":"bulkhead-cross-5-b","section":{"designation":"W16X26","family":"wide-flange"},"kind":"beam","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-west-north","startNode":"bulkhead-west-north-a","endNode":"bulkhead-west-north-b","section":{"designation":"W14X22","family":"wide-flange"},"kind":"beam","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-west-south","startNode":"bulkhead-west-south-a","endNode":"bulkhead-west-south-b","section":{"designation":"W12X19","family":"wide-flange"},"kind":"beam","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-middle-0-1","startNode":"bulkhead-middle-0-1-a","endNode":"bulkhead-middle-0-1-b","section":{"designation":"W12X16","family":"wide-flange"},"kind":"beam","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-middle-2-3","startNode":"bulkhead-middle-2-3-a","endNode":"bulkhead-middle-2-3-b","section":{"designation":"W16X26","family":"wide-flange"},"kind":"beam","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-middle-4-5","startNode":"bulkhead-middle-4-5-a","endNode":"bulkhead-middle-4-5-b","section":{"designation":"W12X16","family":"wide-flange"},"kind":"beam","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-post-0-0","startNode":"bulkhead-post-0-0-a","endNode":"bulkhead-post-0-0-b","section":{"designation":"W14X90","family":"wide-flange"},"kind":"column","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":"E48 bulkhead note specifies W14\u00d790 posts; floor-to-roof height20\u203210\u2033. Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-post-0-2","startNode":"bulkhead-post-0-2-a","endNode":"bulkhead-post-0-2-b","section":{"designation":"W14X90","family":"wide-flange"},"kind":"column","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":"E48 bulkhead note specifies W14\u00d790 posts; floor-to-roof height20\u203210\u2033. Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-post-1-0","startNode":"bulkhead-post-1-0-a","endNode":"bulkhead-post-1-0-b","section":{"designation":"W14X90","family":"wide-flange"},"kind":"column","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":"E48 bulkhead note specifies W14\u00d790 posts; floor-to-roof height20\u203210\u2033. Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-post-1-2","startNode":"bulkhead-post-1-2-a","endNode":"bulkhead-post-1-2-b","section":{"designation":"W14X90","family":"wide-flange"},"kind":"column","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":"E48 bulkhead note specifies W14\u00d790 posts; floor-to-roof height20\u203210\u2033. Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-post-3-0","startNode":"bulkhead-post-3-0-a","endNode":"bulkhead-post-3-0-b","section":{"designation":"W14X90","family":"wide-flange"},"kind":"column","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":"E48 bulkhead note specifies W14\u00d790 posts; floor-to-roof height20\u203210\u2033. Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-post-3-2","startNode":"bulkhead-post-3-2-a","endNode":"bulkhead-post-3-2-b","section":{"designation":"W14X90","family":"wide-flange"},"kind":"column","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":"E48 bulkhead note specifies W14\u00d790 posts; floor-to-roof height20\u203210\u2033. Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-post-5-0","startNode":"bulkhead-post-5-0-a","endNode":"bulkhead-post-5-0-b","section":{"designation":"W14X90","family":"wide-flange"},"kind":"column","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":"E48 bulkhead note specifies W14\u00d790 posts; floor-to-roof height20\u203210\u2033. Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-post-5-2","startNode":"bulkhead-post-5-2-a","endNode":"bulkhead-post-5-2-b","section":{"designation":"W14X90","family":"wide-flange"},"kind":"column","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":"E48 bulkhead note specifies W14\u00d790 posts; floor-to-roof height20\u203210\u2033. Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-post-0-1","startNode":"bulkhead-post-0-1-a","endNode":"bulkhead-post-0-1-b","section":{"designation":"W14X90","family":"wide-flange"},"kind":"column","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":"E48 bulkhead note specifies W14\u00d790 posts; floor-to-roof height20\u203210\u2033. Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-post-5-1","startNode":"bulkhead-post-5-1-a","endNode":"bulkhead-post-5-1-b","section":{"designation":"W14X90","family":"wide-flange"},"kind":"column","role":"perimeter","face":"roof","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":"E48 bulkhead note specifies W14\u00d790 posts; floor-to-roof height20\u203210\u2033. Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-north-brace-a","startNode":"bulkhead-north-brace-a-a","endNode":"bulkhead-north-brace-a-b","section":{"designation":"L6X6X3/8","family":"angle","dimensionsIn":{"depth":6.0,"width":6.0,"flangeThickness":0.375,"webThickness":0.375}},"kind":"brace","role":"perimeter","face":"north","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-north-brace-b","startNode":"bulkhead-north-brace-b-a","endNode":"bulkhead-north-brace-b-b","section":{"designation":"L6X6X3/8","family":"angle","dimensionsIn":{"depth":6.0,"width":6.0,"flangeThickness":0.375,"webThickness":0.375}},"kind":"brace","role":"perimeter","face":"north","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-south-brace-a","startNode":"bulkhead-south-brace-a-a","endNode":"bulkhead-south-brace-a-b","section":{"designation":"L6X6X3/8","family":"angle","dimensionsIn":{"depth":6.0,"width":6.0,"flangeThickness":0.375,"webThickness":0.375}},"kind":"brace","role":"perimeter","face":"south","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-south-brace-b","startNode":"bulkhead-south-brace-b-a","endNode":"bulkhead-south-brace-b-b","section":{"designation":"L6X6X3/8","family":"angle","dimensionsIn":{"depth":6.0,"width":6.0,"flangeThickness":0.375,"webThickness":0.375}},"kind":"brace","role":"perimeter","face":"south","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-west-brace-a","startNode":"bulkhead-west-brace-a-a","endNode":"bulkhead-west-brace-a-b","section":{"designation":"WT7X21.5","family":"wide-flange"},"kind":"brace","role":"perimeter","face":"west","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-east-brace-a","startNode":"bulkhead-east-brace-a-a","endNode":"bulkhead-east-brace-a-b","section":{"designation":"L4X4X3/8","family":"angle","dimensionsIn":{"depth":4.0,"width":4.0,"flangeThickness":0.375,"webThickness":0.375}},"kind":"brace","role":"perimeter","face":"east","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."},{"id":"bulkhead-east-brace-b","startNode":"bulkhead-east-brace-b-a","endNode":"bulkhead-east-brace-b-b","section":{"designation":"L4X4X3/8","family":"angle","dimensionsIn":{"depth":4.0,"width":4.0,"flangeThickness":0.375,"webThickness":0.375}},"kind":"brace","role":"perimeter","face":"east","sourceRegion":"S16 roof bulkhead plan and E48 bulkhead plan/elevations","sourceIds":["cantor-S16","frankel-E48"],"sourceCrops":["analysis/wtc7-blueprint-reconstruction/roof-source-crops/S16-bulkhead.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-elevations.png","analysis/wtc7-blueprint-reconstruction/roof-source-crops/E48-bulkhead-north.png"],"note":" Display uses drawing worklines; two-inch erection offsets, rolled fillets, connection cuts and hardware remain to be detailed."}],"counts":{"beams":16,"posts":10,"braces":7},"datumElevationFt":941.4583333333334,"sourceIds":["cantor-S16","frankel-E48"],"limitations":["Post and brace end setbacks are not resolved; general roof/bulkhead steel datums define displayed worklines.","The plan includes additional trolley,shaft,opening and local roof members that remain untranscribed.","Cooling-tower support frame and the other rooftop equipment enclosure are separate assemblies.","E48 specifies local2in member/post offsets; these remain untranscribed and must not be implied by dimension-derived center worklines."]}