{"revision":"Study 08","sourcePDF":"sources/PANYNJ-12673-WTC.pdf","sourceURL":"https://pacorpredevblobstorage.blob.core.windows.net/board-documents/uploads/documents/freedom-of-information/foi-fulfilled-requests/12673-WTC.pdf","sourcePages":[410,413],"profiles":[{"id":"wtc2-lobby-floor-1","tower":2,"floor":1,"label":"Concourse lobby","drawing":"A-B-20","source":"A-B-20, PANYNJ release 12673, PDF page 410","sourceURL":"https://pacorpredevblobstorage.blob.core.windows.net/board-documents/uploads/documents/freedom-of-information/foi-fulfilled-requests/12673-WTC.pdf#page=410","elevationFt":0,"elevationAbsoluteFt":310,"modelable":true,"status":"independent-Tower-B-drawing-trace","evidencePreviewSHA256":"8bc08129ad3016bed7f7fa58e6454afcda6f12393f42c765cdd5ccf14cbcd0f5","outlineFt":[[-103.58333,96.66667],[-103.58333,-96.66667],[-96.66667,-103.58333],[96.66667,-103.58333],[103.58333,-96.66667],[103.58333,96.66667],[96.66667,103.58333],[-96.66667,103.58333]],"slabRegions":[{"id":"wtc2-f1-floor","label":"South Tower lobby floor","role":"lobby","polygonFt":[[-103.58333,96.66667],[-103.58333,-96.66667],[-96.66667,-103.58333],[96.66667,-103.58333],[103.58333,-96.66667],[103.58333,96.66667],[96.66667,103.58333],[-96.66667,103.58333]],"thicknessIn":4,"deckIn":0,"source":"A-B-20, PANYNJ release 12673, PDF page 410","thicknessBasis":"4 in display depth only; local structural thickness is unresolved."}],"openings":[{"id":"wtc2-f1-outer-shaft-1-1","label":"outer-shaft-1-1","kind":"shaft","pixelPolygon":[[498,402],[526,402],[526,451],[498,451]],"polygonFt":[[-36.89443,64.97615],[-36.89443,57.91078],[-24.4695,57.91078],[-24.4695,64.97615]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-1-2","label":"outer-shaft-1-2","kind":"shaft","pixelPolygon":[[536,402],[563,402],[563,451],[536,451]],"polygonFt":[[-36.89443,55.38743],[-36.89443,48.5744],[-24.4695,48.5744],[-24.4695,55.38743]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-1-3","label":"outer-shaft-1-3","kind":"shaft","pixelPolygon":[[579,402],[608,402],[608,451],[579,451]],"polygonFt":[[-36.89443,44.53705],[-36.89443,37.21935],[-24.4695,37.21935],[-24.4695,44.53705]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-1-4","label":"outer-shaft-1-4","kind":"shaft","pixelPolygon":[[619,402],[647,402],[647,451],[619,451]],"polygonFt":[[-36.89443,34.44367],[-36.89443,27.3783],[-24.4695,27.3783],[-24.4695,34.44367]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-1-5","label":"outer-shaft-1-5","kind":"shaft","pixelPolygon":[[660,402],[689,402],[689,451],[660,451]],"polygonFt":[[-36.89443,24.09795],[-36.89443,16.78025],[-24.4695,16.78025],[-24.4695,24.09795]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-1-6","label":"outer-shaft-1-6","kind":"shaft","pixelPolygon":[[699,402],[730,402],[730,451],[699,451]],"polygonFt":[[-36.89443,14.2569],[-36.89443,6.43453],[-24.4695,6.43453],[-24.4695,14.2569]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-1-7","label":"outer-shaft-1-7","kind":"shaft","pixelPolygon":[[780,402],[810,402],[810,451],[780,451]],"polygonFt":[[-36.89443,-6.1822],[-36.89443,-13.75223],[-24.4695,-13.75223],[-24.4695,-6.1822]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-1-8","label":"outer-shaft-1-8","kind":"shaft","pixelPolygon":[[822,402],[850,402],[850,451],[822,451]],"polygonFt":[[-36.89443,-16.78025],[-36.89443,-23.84562],[-24.4695,-23.84562],[-24.4695,-16.78025]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-1-9","label":"outer-shaft-1-9","kind":"shaft","pixelPolygon":[[864,402],[894,402],[894,451],[864,451]],"polygonFt":[[-36.89443,-27.3783],[-36.89443,-34.94834],[-24.4695,-34.94834],[-24.4695,-27.3783]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-1-10","label":"outer-shaft-1-10","kind":"shaft","pixelPolygon":[[906,402],[933,402],[933,451],[906,451]],"polygonFt":[[-36.89443,-37.97635],[-36.89443,-44.78938],[-24.4695,-44.78938],[-24.4695,-37.97635]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-1-11","label":"outer-shaft-1-11","kind":"shaft","pixelPolygon":[[947,402],[976,402],[976,451],[947,451]],"polygonFt":[[-36.89443,-48.32207],[-36.89443,-55.63977],[-24.4695,-55.63977],[-24.4695,-48.32207]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-1-12","label":"outer-shaft-1-12","kind":"shaft","pixelPolygon":[[986,402],[1015,402],[1015,451],[986,451]],"polygonFt":[[-36.89443,-58.16311],[-36.89443,-65.48082],[-24.4695,-65.48082],[-24.4695,-58.16311]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-2-1","label":"outer-shaft-2-1","kind":"shaft","pixelPolygon":[[498,648],[526,648],[526,699],[498,699]],"polygonFt":[[25.48378,64.97615],[25.48378,57.91078],[38.41585,57.91078],[38.41585,64.97615]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-2-2","label":"outer-shaft-2-2","kind":"shaft","pixelPolygon":[[536,648],[563,648],[563,699],[536,699]],"polygonFt":[[25.48378,55.38743],[25.48378,48.5744],[38.41585,48.5744],[38.41585,55.38743]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-2-3","label":"outer-shaft-2-3","kind":"shaft","pixelPolygon":[[579,648],[608,648],[608,699],[579,699]],"polygonFt":[[25.48378,44.53705],[25.48378,37.21935],[38.41585,37.21935],[38.41585,44.53705]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-2-4","label":"outer-shaft-2-4","kind":"shaft","pixelPolygon":[[619,648],[647,648],[647,699],[619,699]],"polygonFt":[[25.48378,34.44367],[25.48378,27.3783],[38.41585,27.3783],[38.41585,34.44367]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-2-5","label":"outer-shaft-2-5","kind":"shaft","pixelPolygon":[[660,648],[689,648],[689,699],[660,699]],"polygonFt":[[25.48378,24.09795],[25.48378,16.78025],[38.41585,16.78025],[38.41585,24.09795]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-2-6","label":"outer-shaft-2-6","kind":"shaft","pixelPolygon":[[699,648],[730,648],[730,699],[699,699]],"polygonFt":[[25.48378,14.2569],[25.48378,6.43453],[38.41585,6.43453],[38.41585,14.2569]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-service-upper","label":"service-upper","kind":"shaft","pixelPolygon":[[780,648],[810,648],[810,673],[780,673]],"polygonFt":[[25.48378,-6.1822],[25.48378,-13.75223],[31.82303,-13.75223],[31.82303,-6.1822]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-2-8","label":"outer-shaft-2-8","kind":"shaft","pixelPolygon":[[822,648],[850,648],[850,699],[822,699]],"polygonFt":[[25.48378,-16.78025],[25.48378,-23.84562],[38.41585,-23.84562],[38.41585,-16.78025]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-2-9","label":"outer-shaft-2-9","kind":"shaft","pixelPolygon":[[864,648],[894,648],[894,699],[864,699]],"polygonFt":[[25.48378,-27.3783],[25.48378,-34.94834],[38.41585,-34.94834],[38.41585,-27.3783]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-2-10","label":"outer-shaft-2-10","kind":"shaft","pixelPolygon":[[906,648],[933,648],[933,699],[906,699]],"polygonFt":[[25.48378,-37.97635],[25.48378,-44.78938],[38.41585,-44.78938],[38.41585,-37.97635]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-2-11","label":"outer-shaft-2-11","kind":"shaft","pixelPolygon":[[947,648],[976,648],[976,699],[947,699]],"polygonFt":[[25.48378,-48.32207],[25.48378,-55.63977],[38.41585,-55.63977],[38.41585,-48.32207]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-outer-shaft-2-12","label":"outer-shaft-2-12","kind":"shaft","pixelPolygon":[[986,648],[1015,648],[1015,699],[986,699]],"polygonFt":[[25.48378,-58.16311],[25.48378,-65.48082],[38.41585,-65.48082],[38.41585,-58.16311]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-1-1","label":"inner-shaft-1-1","kind":"shaft","pixelPolygon":[[499,463],[523,463],[523,493],[499,493]],"polygonFt":[[-21.42666,64.72381],[-21.42666,58.66778],[-13.81956,58.66778],[-13.81956,64.72381]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-1-2","label":"inner-shaft-1-2","kind":"shaft","pixelPolygon":[[499,504],[523,504],[523,534],[499,534]],"polygonFt":[[-11.03029,64.72381],[-11.03029,58.66778],[-3.42319,58.66778],[-3.42319,64.72381]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-1-3","label":"inner-shaft-1-3","kind":"shaft","pixelPolygon":[[499,548],[523,548],[523,575],[499,575]],"polygonFt":[[0.12678,64.72381],[0.12678,58.66778],[6.97317,58.66778],[6.97317,64.72381]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-2-1","label":"inner-shaft-2-1","kind":"shaft","pixelPolygon":[[568,463],[590,463],[590,493],[568,493]],"polygonFt":[[-21.42666,47.31273],[-21.42666,41.76137],[-13.81956,41.76137],[-13.81956,47.31273]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-2-2","label":"inner-shaft-2-2","kind":"shaft","pixelPolygon":[[568,504],[590,504],[590,534],[568,534]],"polygonFt":[[-11.03029,47.31273],[-11.03029,41.76137],[-3.42319,41.76137],[-3.42319,47.31273]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-2-3","label":"inner-shaft-2-3","kind":"shaft","pixelPolygon":[[568,548],[590,548],[590,575],[568,575]],"polygonFt":[[0.12678,47.31273],[0.12678,41.76137],[6.97317,41.76137],[6.97317,47.31273]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-3-1","label":"inner-shaft-3-1","kind":"shaft","pixelPolygon":[[603,463],[626,463],[626,493],[603,493]],"polygonFt":[[-21.42666,38.48102],[-21.42666,32.67732],[-13.81956,32.67732],[-13.81956,38.48102]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-3-2","label":"inner-shaft-3-2","kind":"shaft","pixelPolygon":[[603,504],[626,504],[626,534],[603,534]],"polygonFt":[[-11.03029,38.48102],[-11.03029,32.67732],[-3.42319,32.67732],[-3.42319,38.48102]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-3-3","label":"inner-shaft-3-3","kind":"shaft","pixelPolygon":[[603,548],[626,548],[626,575],[603,575]],"polygonFt":[[0.12678,38.48102],[0.12678,32.67732],[6.97317,32.67732],[6.97317,38.48102]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-4-1","label":"inner-shaft-4-1","kind":"shaft","pixelPolygon":[[673,463],[695,463],[695,493],[673,493]],"polygonFt":[[-21.42666,20.8176],[-21.42666,15.26624],[-13.81956,15.26624],[-13.81956,20.8176]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-4-2","label":"inner-shaft-4-2","kind":"shaft","pixelPolygon":[[673,504],[695,504],[695,534],[673,534]],"polygonFt":[[-11.03029,20.8176],[-11.03029,15.26624],[-3.42319,15.26624],[-3.42319,20.8176]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-4-3","label":"inner-shaft-4-3","kind":"shaft","pixelPolygon":[[673,548],[695,548],[695,575],[673,575]],"polygonFt":[[0.12678,20.8176],[0.12678,15.26624],[6.97317,15.26624],[6.97317,20.8176]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-5-1","label":"inner-shaft-5-1","kind":"shaft","pixelPolygon":[[814,463],[837,463],[837,493],[814,493]],"polygonFt":[[-21.42666,-14.76157],[-21.42666,-20.56527],[-13.81956,-20.56527],[-13.81956,-14.76157]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-5-2","label":"inner-shaft-5-2","kind":"shaft","pixelPolygon":[[814,504],[837,504],[837,534],[814,534]],"polygonFt":[[-11.03029,-14.76157],[-11.03029,-20.56527],[-3.42319,-20.56527],[-3.42319,-14.76157]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-5-3","label":"inner-shaft-5-3","kind":"shaft","pixelPolygon":[[814,548],[837,548],[837,575],[814,575]],"polygonFt":[[0.12678,-14.76157],[0.12678,-20.56527],[6.97317,-20.56527],[6.97317,-14.76157]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-6-1","label":"inner-shaft-6-1","kind":"shaft","pixelPolygon":[[886,463],[908,463],[908,493],[886,493]],"polygonFt":[[-21.42666,-32.92966],[-21.42666,-38.48102],[-13.81956,-38.48102],[-13.81956,-32.92966]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-6-2","label":"inner-shaft-6-2","kind":"shaft","pixelPolygon":[[886,504],[908,504],[908,534],[886,534]],"polygonFt":[[-11.03029,-32.92966],[-11.03029,-38.48102],[-3.42319,-38.48102],[-3.42319,-32.92966]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-6-3","label":"inner-shaft-6-3","kind":"shaft","pixelPolygon":[[886,548],[908,548],[908,575],[886,575]],"polygonFt":[[0.12678,-32.92966],[0.12678,-38.48102],[6.97317,-38.48102],[6.97317,-32.92966]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-7-1","label":"inner-shaft-7-1","kind":"shaft","pixelPolygon":[[921,463],[944,463],[944,493],[921,493]],"polygonFt":[[-21.42666,-41.76137],[-21.42666,-47.56506],[-13.81956,-47.56506],[-13.81956,-41.76137]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-7-2","label":"inner-shaft-7-2","kind":"shaft","pixelPolygon":[[921,504],[944,504],[944,534],[921,534]],"polygonFt":[[-11.03029,-41.76137],[-11.03029,-47.56506],[-3.42319,-47.56506],[-3.42319,-41.76137]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-7-3","label":"inner-shaft-7-3","kind":"shaft","pixelPolygon":[[921,548],[944,548],[944,575],[921,575]],"polygonFt":[[0.12678,-41.76137],[0.12678,-47.56506],[6.97317,-47.56506],[6.97317,-41.76137]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-8-1","label":"inner-shaft-8-1","kind":"shaft","pixelPolygon":[[990,463],[1013,463],[1013,493],[990,493]],"polygonFt":[[-21.42666,-59.17245],[-21.42666,-64.97615],[-13.81956,-64.97615],[-13.81956,-59.17245]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-8-2","label":"inner-shaft-8-2","kind":"shaft","pixelPolygon":[[990,504],[1013,504],[1013,534],[990,534]],"polygonFt":[[-11.03029,-59.17245],[-11.03029,-64.97615],[-3.42319,-64.97615],[-3.42319,-59.17245]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-inner-shaft-8-3","label":"inner-shaft-8-3","kind":"shaft","pixelPolygon":[[990,548],[1013,548],[1013,575],[990,575]],"polygonFt":[[0.12678,-59.17245],[0.12678,-64.97615],[6.97317,-64.97615],[6.97317,-59.17245]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-freight-service-1","label":"freight-service-1","kind":"shaft","pixelPolygon":[[707,504],[735,504],[735,533],[707,533]],"polygonFt":[[-11.03029,12.23823],[-11.03029,5.17286],[-3.67676,5.17286],[-3.67676,12.23823]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-freight-service-2","label":"freight-service-2","kind":"shaft","pixelPolygon":[[707,549],[735,549],[735,575],[707,575]],"polygonFt":[[0.38035,12.23823],[0.38035,5.17286],[6.97317,5.17286],[6.97317,12.23823]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-freight-service-3","label":"freight-service-3","kind":"shaft","pixelPolygon":[[744,398],[764,398],[764,412],[744,412]],"polygonFt":[[-37.90871,2.90185],[-37.90871,-2.14484],[-34.35873,-2.14484],[-34.35873,2.90185]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-freight-service-4","label":"freight-service-4","kind":"shaft","pixelPolygon":[[744,674],[764,674],[764,697],[744,697]],"polygonFt":[[32.0766,2.90185],[32.0766,-2.14484],[37.90871,-2.14484],[37.90871,2.90185]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f1-freight-service-5","label":"freight-service-5","kind":"shaft","pixelPolygon":[[776,676],[807,676],[807,696],[776,696]],"polygonFt":[[32.58374,-5.17286],[32.58374,-12.99523],[37.65514,-12.99523],[37.65514,-5.17286]],"source":"A-B-20","modelable":true,"registrationToleranceFt":2}],"calibration":{"sourcePixelBounds":[345,1166,139,956],"referenceImageWidthPx":1650,"sourceImageRotationDegrees":0,"referenceWidthFt":207.16666666666666,"cornerChamferFt":6.916666666666667,"method":"Independent perimeter controls on each sheet; north arrow points right; x east = page down, z south = page left.","registrationToleranceFt":2,"toleranceBasis":"Editorial allowance for manual scan tracing; not surveyed or statistical accuracy."},"scope":"South Tower concourse and plaza surfaces traced from its own architectural drawings; curved atria are open only at plaza level.","limitations":["Original design/revision plans are not a verified 2001 as-built survey.","Major visible shaft interiors are cut; smaller penetrations, stairwells, wall finishes and floor framing remain incomplete.","Four-inch floor depth and escalator tread/rail sizes are display assumptions.","No Tower A architecture is used for this Tower B trace."]},{"id":"wtc2-lobby-floor-2","tower":2,"floor":2,"label":"Plaza balcony","drawing":"A-B-22","source":"A-B-22, PANYNJ release 12673, PDF page 413","sourceURL":"https://pacorpredevblobstorage.blob.core.windows.net/board-documents/uploads/documents/freedom-of-information/foi-fulfilled-requests/12673-WTC.pdf#page=413","elevationFt":22,"elevationAbsoluteFt":332,"modelable":true,"status":"independent-Tower-B-drawing-trace","evidencePreviewSHA256":"af3861a9b1b84a3804e5b2084a0095db24958c32f397a09d213cfb8e0cbcad82","outlineFt":[[-103.58333,96.66667],[-103.58333,-96.66667],[-96.66667,-103.58333],[96.66667,-103.58333],[103.58333,-96.66667],[103.58333,96.66667],[96.66667,103.58333],[-96.66667,103.58333]],"slabRegions":[{"id":"wtc2-f2-floor","label":"South Tower lobby floor","role":"lobby","polygonFt":[[-103.58333,96.66667],[-103.58333,-96.66667],[-96.66667,-103.58333],[96.66667,-103.58333],[103.58333,-96.66667],[103.58333,96.66667],[96.66667,103.58333],[-96.66667,103.58333]],"thicknessIn":4,"deckIn":0,"source":"A-B-22, PANYNJ release 12673, PDF page 413","thicknessBasis":"4 in display depth only; local structural thickness is unresolved."}],"openings":[{"id":"wtc2-f2-outer-shaft-1-1","label":"outer-shaft-1-1","kind":"shaft","pixelPolygon":[[489,413],[517,413],[517,461],[489,461]],"polygonFt":[[-36.97596,64.72381],[-36.97596,57.65844],[-24.81948,57.65844],[-24.81948,64.72381]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-1-2","label":"outer-shaft-1-2","kind":"shaft","pixelPolygon":[[527,413],[555,413],[555,461],[527,461]],"polygonFt":[[-36.97596,55.1351],[-36.97596,48.06973],[-24.81948,48.06973],[-24.81948,55.1351]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-1-3","label":"outer-shaft-1-3","kind":"shaft","pixelPolygon":[[572,413],[600,413],[600,461],[572,461]],"polygonFt":[[-36.97596,43.78004],[-36.97596,36.71468],[-24.81948,36.71468],[-24.81948,43.78004]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-1-4","label":"outer-shaft-1-4","kind":"shaft","pixelPolygon":[[610,413],[638,413],[638,461],[610,461]],"polygonFt":[[-36.97596,34.19133],[-36.97596,27.12596],[-24.81948,27.12596],[-24.81948,34.19133]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-1-5","label":"outer-shaft-1-5","kind":"shaft","pixelPolygon":[[656,413],[684,413],[684,461],[656,461]],"polygonFt":[[-36.97596,22.58394],[-36.97596,15.51857],[-24.81948,15.51857],[-24.81948,22.58394]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-1-6","label":"outer-shaft-1-6","kind":"shaft","pixelPolygon":[[695,413],[722,413],[722,461],[695,461]],"polygonFt":[[-36.97596,12.74289],[-36.97596,5.92986],[-24.81948,5.92986],[-24.81948,12.74289]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-1-7","label":"outer-shaft-1-7","kind":"shaft","pixelPolygon":[[771,413],[801,413],[801,461],[771,461]],"polygonFt":[[-36.97596,-6.43453],[-36.97596,-14.00457],[-24.81948,-14.00457],[-24.81948,-6.43453]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-1-8","label":"outer-shaft-1-8","kind":"shaft","pixelPolygon":[[811,413],[840,413],[840,461],[811,461]],"polygonFt":[[-36.97596,-16.52791],[-36.97596,-23.84562],[-24.81948,-23.84562],[-24.81948,-16.52791]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-1-9","label":"outer-shaft-1-9","kind":"shaft","pixelPolygon":[[853,413],[883,413],[883,461],[853,461]],"polygonFt":[[-36.97596,-27.12596],[-36.97596,-34.696],[-24.81948,-34.696],[-24.81948,-27.12596]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-1-10","label":"outer-shaft-1-10","kind":"shaft","pixelPolygon":[[895,413],[923,413],[923,461],[895,461]],"polygonFt":[[-36.97596,-37.72402],[-36.97596,-44.78938],[-24.81948,-44.78938],[-24.81948,-37.72402]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-1-11","label":"outer-shaft-1-11","kind":"shaft","pixelPolygon":[[937,413],[965,413],[965,461],[937,461]],"polygonFt":[[-36.97596,-48.32207],[-36.97596,-55.38743],[-24.81948,-55.38743],[-24.81948,-48.32207]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-1-12","label":"outer-shaft-1-12","kind":"shaft","pixelPolygon":[[977,413],[1005,413],[1005,461],[977,461]],"polygonFt":[[-36.97596,-58.41545],[-36.97596,-65.48082],[-24.81948,-65.48082],[-24.81948,-58.41545]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-2-1","label":"outer-shaft-2-1","kind":"shaft","pixelPolygon":[[489,659],[517,659],[517,707],[489,707]],"polygonFt":[[25.326,64.72381],[25.326,57.65844],[37.48248,57.65844],[37.48248,64.72381]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-2-2","label":"outer-shaft-2-2","kind":"shaft","pixelPolygon":[[527,659],[555,659],[555,707],[527,707]],"polygonFt":[[25.326,55.1351],[25.326,48.06973],[37.48248,48.06973],[37.48248,55.1351]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-2-3","label":"outer-shaft-2-3","kind":"shaft","pixelPolygon":[[572,659],[600,659],[600,707],[572,707]],"polygonFt":[[25.326,43.78004],[25.326,36.71468],[37.48248,36.71468],[37.48248,43.78004]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-2-4","label":"outer-shaft-2-4","kind":"shaft","pixelPolygon":[[610,659],[638,659],[638,707],[610,707]],"polygonFt":[[25.326,34.19133],[25.326,27.12596],[37.48248,27.12596],[37.48248,34.19133]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-2-5","label":"outer-shaft-2-5","kind":"shaft","pixelPolygon":[[656,659],[684,659],[684,707],[656,707]],"polygonFt":[[25.326,22.58394],[25.326,15.51857],[37.48248,15.51857],[37.48248,22.58394]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-2-6","label":"outer-shaft-2-6","kind":"shaft","pixelPolygon":[[695,659],[722,659],[722,707],[695,707]],"polygonFt":[[25.326,12.74289],[25.326,5.92986],[37.48248,5.92986],[37.48248,12.74289]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-service-upper","label":"service-upper","kind":"shaft","pixelPolygon":[[771,659],[801,659],[801,684],[771,684]],"polygonFt":[[25.326,-6.43453],[25.326,-14.00457],[31.6575,-14.00457],[31.6575,-6.43453]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-2-8","label":"outer-shaft-2-8","kind":"shaft","pixelPolygon":[[811,659],[840,659],[840,707],[811,707]],"polygonFt":[[25.326,-16.52791],[25.326,-23.84562],[37.48248,-23.84562],[37.48248,-16.52791]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-2-9","label":"outer-shaft-2-9","kind":"shaft","pixelPolygon":[[853,659],[883,659],[883,707],[853,707]],"polygonFt":[[25.326,-27.12596],[25.326,-34.696],[37.48248,-34.696],[37.48248,-27.12596]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-2-10","label":"outer-shaft-2-10","kind":"shaft","pixelPolygon":[[895,659],[923,659],[923,707],[895,707]],"polygonFt":[[25.326,-37.72402],[25.326,-44.78938],[37.48248,-44.78938],[37.48248,-37.72402]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-2-11","label":"outer-shaft-2-11","kind":"shaft","pixelPolygon":[[937,659],[965,659],[965,707],[937,707]],"polygonFt":[[25.326,-48.32207],[25.326,-55.38743],[37.48248,-55.38743],[37.48248,-48.32207]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-outer-shaft-2-12","label":"outer-shaft-2-12","kind":"shaft","pixelPolygon":[[977,659],[1005,659],[1005,707],[977,707]],"polygonFt":[[25.326,-58.41545],[25.326,-65.48082],[37.48248,-65.48082],[37.48248,-58.41545]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-1-1","label":"inner-shaft-1-1","kind":"shaft","pixelPolygon":[[489,474],[511,474],[511,503],[489,503]],"polygonFt":[[-21.5271,64.72381],[-21.5271,59.17245],[-14.18256,59.17245],[-14.18256,64.72381]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-1-2","label":"inner-shaft-1-2","kind":"shaft","pixelPolygon":[[489,515],[511,515],[511,542],[489,542]],"polygonFt":[[-11.14344,64.72381],[-11.14344,59.17245],[-4.30542,59.17245],[-4.30542,64.72381]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-1-3","label":"inner-shaft-1-3","kind":"shaft","pixelPolygon":[[489,553],[511,553],[511,582],[489,582]],"polygonFt":[[-1.51956,64.72381],[-1.51956,59.17245],[5.82498,59.17245],[5.82498,64.72381]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-2-1","label":"inner-shaft-2-1","kind":"shaft","pixelPolygon":[[558,474],[580,474],[580,503],[558,503]],"polygonFt":[[-21.5271,47.31273],[-21.5271,41.76137],[-14.18256,41.76137],[-14.18256,47.31273]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-2-2","label":"inner-shaft-2-2","kind":"shaft","pixelPolygon":[[558,515],[580,515],[580,542],[558,542]],"polygonFt":[[-11.14344,47.31273],[-11.14344,41.76137],[-4.30542,41.76137],[-4.30542,47.31273]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-2-3","label":"inner-shaft-2-3","kind":"shaft","pixelPolygon":[[558,553],[580,553],[580,582],[558,582]],"polygonFt":[[-1.51956,47.31273],[-1.51956,41.76137],[5.82498,41.76137],[5.82498,47.31273]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-3-1","label":"inner-shaft-3-1","kind":"shaft","pixelPolygon":[[590,474],[613,474],[613,503],[590,503]],"polygonFt":[[-21.5271,39.23802],[-21.5271,33.43433],[-14.18256,33.43433],[-14.18256,39.23802]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-3-2","label":"inner-shaft-3-2","kind":"shaft","pixelPolygon":[[590,515],[613,515],[613,542],[590,542]],"polygonFt":[[-11.14344,39.23802],[-11.14344,33.43433],[-4.30542,33.43433],[-4.30542,39.23802]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-3-3","label":"inner-shaft-3-3","kind":"shaft","pixelPolygon":[[590,553],[613,553],[613,582],[590,582]],"polygonFt":[[-1.51956,39.23802],[-1.51956,33.43433],[5.82498,33.43433],[5.82498,39.23802]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-4-1","label":"inner-shaft-4-1","kind":"shaft","pixelPolygon":[[662,474],[685,474],[685,503],[662,503]],"polygonFt":[[-21.5271,21.06994],[-21.5271,15.26624],[-14.18256,15.26624],[-14.18256,21.06994]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-4-2","label":"inner-shaft-4-2","kind":"shaft","pixelPolygon":[[662,515],[685,515],[685,542],[662,542]],"polygonFt":[[-11.14344,21.06994],[-11.14344,15.26624],[-4.30542,15.26624],[-4.30542,21.06994]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-4-3","label":"inner-shaft-4-3","kind":"shaft","pixelPolygon":[[662,553],[685,553],[685,582],[662,582]],"polygonFt":[[-1.51956,21.06994],[-1.51956,15.26624],[5.82498,15.26624],[5.82498,21.06994]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-5-1","label":"inner-shaft-5-1","kind":"shaft","pixelPolygon":[[807,474],[829,474],[829,503],[807,503]],"polygonFt":[[-21.5271,-15.51857],[-21.5271,-21.06994],[-14.18256,-21.06994],[-14.18256,-15.51857]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-5-2","label":"inner-shaft-5-2","kind":"shaft","pixelPolygon":[[807,515],[829,515],[829,542],[807,542]],"polygonFt":[[-11.14344,-15.51857],[-11.14344,-21.06994],[-4.30542,-21.06994],[-4.30542,-15.51857]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-5-3","label":"inner-shaft-5-3","kind":"shaft","pixelPolygon":[[807,553],[829,553],[829,582],[807,582]],"polygonFt":[[-1.51956,-15.51857],[-1.51956,-21.06994],[5.82498,-21.06994],[5.82498,-15.51857]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-6-1","label":"inner-shaft-6-1","kind":"shaft","pixelPolygon":[[879,474],[901,474],[901,503],[879,503]],"polygonFt":[[-21.5271,-33.68666],[-21.5271,-39.23802],[-14.18256,-39.23802],[-14.18256,-33.68666]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-6-2","label":"inner-shaft-6-2","kind":"shaft","pixelPolygon":[[879,515],[901,515],[901,542],[879,542]],"polygonFt":[[-11.14344,-33.68666],[-11.14344,-39.23802],[-4.30542,-39.23802],[-4.30542,-33.68666]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-6-3","label":"inner-shaft-6-3","kind":"shaft","pixelPolygon":[[879,553],[901,553],[901,582],[879,582]],"polygonFt":[[-1.51956,-33.68666],[-1.51956,-39.23802],[5.82498,-39.23802],[5.82498,-33.68666]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-7-1","label":"inner-shaft-7-1","kind":"shaft","pixelPolygon":[[912,474],[934,474],[934,503],[912,503]],"polygonFt":[[-21.5271,-42.0137],[-21.5271,-47.56506],[-14.18256,-47.56506],[-14.18256,-42.0137]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-7-2","label":"inner-shaft-7-2","kind":"shaft","pixelPolygon":[[912,515],[934,515],[934,542],[912,542]],"polygonFt":[[-11.14344,-42.0137],[-11.14344,-47.56506],[-4.30542,-47.56506],[-4.30542,-42.0137]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-7-3","label":"inner-shaft-7-3","kind":"shaft","pixelPolygon":[[912,553],[934,553],[934,582],[912,582]],"polygonFt":[[-1.51956,-42.0137],[-1.51956,-47.56506],[5.82498,-47.56506],[5.82498,-42.0137]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-8-1","label":"inner-shaft-8-1","kind":"shaft","pixelPolygon":[[982,474],[1004,474],[1004,503],[982,503]],"polygonFt":[[-21.5271,-59.67712],[-21.5271,-65.22848],[-14.18256,-65.22848],[-14.18256,-59.67712]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-8-2","label":"inner-shaft-8-2","kind":"shaft","pixelPolygon":[[982,515],[1004,515],[1004,542],[982,542]],"polygonFt":[[-11.14344,-59.67712],[-11.14344,-65.22848],[-4.30542,-65.22848],[-4.30542,-59.67712]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-inner-shaft-8-3","label":"inner-shaft-8-3","kind":"shaft","pixelPolygon":[[982,553],[1004,553],[1004,582],[982,582]],"polygonFt":[[-1.51956,-59.67712],[-1.51956,-65.22848],[5.82498,-65.22848],[5.82498,-59.67712]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-freight-service-1","label":"freight-service-1","kind":"shaft","pixelPolygon":[[696,513],[726,513],[726,542],[696,542]],"polygonFt":[[-11.64996,12.49056],[-11.64996,4.92052],[-4.30542,4.92052],[-4.30542,12.49056]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-freight-service-2","label":"freight-service-2","kind":"shaft","pixelPolygon":[[697,554],[726,554],[726,581],[697,581]],"polygonFt":[[-1.2663,12.23823],[-1.2663,4.92052],[5.57172,4.92052],[5.57172,12.23823]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-freight-service-3","label":"freight-service-3","kind":"shaft","pixelPolygon":[[735,415],[755,415],[755,424],[735,424]],"polygonFt":[[-36.46944,2.64951],[-36.46944,-2.39718],[-34.1901,-2.39718],[-34.1901,2.64951]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-freight-service-4","label":"freight-service-4","kind":"shaft","pixelPolygon":[[736,689],[756,689],[756,706],[736,706]],"polygonFt":[[32.9238,2.39718],[32.9238,-2.64951],[37.22922,-2.64951],[37.22922,2.39718]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-freight-service-5","label":"freight-service-5","kind":"shaft","pixelPolygon":[[770,692],[798,692],[798,706],[770,706]],"polygonFt":[[33.68358,-6.1822],[33.68358,-13.24756],[37.22922,-13.24756],[37.22922,-6.1822]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-west-atrium","label":"west-atrium","kind":"atrium","pixelPolygon":[[474,388],[477,324],[486,289],[503,266],[528,253],[560,247],[640,241],[741,238],[842,241],[934,249],[965,257],[984,271],[998,292],[1008,328],[1013,388]],"polygonFt":[[-43.30746,68.50883],[-59.5161,67.75183],[-68.3802,65.48082],[-74.20518,61.19113],[-77.49756,54.88276],[-79.01711,46.80806],[-80.53667,26.6213],[-81.29645,1.13551],[-80.53667,-24.35028],[-78.51059,-47.56506],[-76.48452,-55.38743],[-72.93888,-60.18179],[-67.62042,-63.71447],[-58.50306,-66.23782],[-43.30746,-67.49949]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-east-atrium","label":"east-atrium","kind":"atrium","pixelPolygon":[[473,727],[476,790],[486,830],[505,853],[539,869],[607,878],[740,883],[866,879],[937,871],[971,859],[992,839],[1006,807],[1013,768],[1015,727]],"polygonFt":[[42.54768,68.76117],[58.50306,68.00416],[68.63346,65.48082],[74.45844,60.68646],[78.51059,52.10708],[80.78993,34.94834],[82.05623,1.38784],[81.04319,-30.40631],[79.01711,-48.32207],[75.978,-56.90144],[70.9128,-62.20047],[62.80848,-65.73315],[52.93134,-67.49949],[42.54768,-68.00416]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2},{"id":"wtc2-f2-B1-B2-escalator-aperture","label":"B1-B2-escalator-aperture","kind":"escalator","pixelPolygon":[[1034,411],[1091,411],[1091,522],[1034,522]],"polygonFt":[[-37.48248,-72.79852],[-37.48248,-87.18159],[-9.37062,-87.18159],[-9.37062,-72.79852]],"source":"A-B-22","modelable":true,"registrationToleranceFt":2}],"calibration":{"sourcePixelBounds":[335,1156,150,968],"referenceImageWidthPx":1650,"sourceImageRotationDegrees":0,"referenceWidthFt":207.16666666666666,"cornerChamferFt":6.916666666666667,"method":"Independent perimeter controls on each sheet; north arrow points right; x east = page down, z south = page left.","registrationToleranceFt":2,"toleranceBasis":"Editorial allowance for manual scan tracing; not surveyed or statistical accuracy."},"scope":"South Tower concourse and plaza surfaces traced from its own architectural drawings; curved atria are open only at plaza level.","limitations":["Original design/revision plans are not a verified 2001 as-built survey.","Major visible shaft interiors are cut; smaller penetrations, stairwells, wall finishes and floor framing remain incomplete.","Four-inch floor depth and escalator tread/rail sizes are display assumptions.","No Tower A architecture is used for this Tower B trace."]}],"escalators":[{"id":"wtc2-escalator-B1","upperXZ":[-40.5216,-76.07887],"lowerXZ":[8.74816,-75.82653],"upperEL":332,"lowerEL":310,"widthFt":4.333333333333333,"treadWidthFt":3,"inclineDegrees":30,"railHeightFt":3,"illustrativeRiserFt":0.65,"source":"A-B-20 / A-B-22 endpoints; A-AB-264 shared A1/A2 and B1/B2 section. NIST NCSTAR 1-7 Figure 2-5 corroborates the connection.","status":"plan-traced endpoints; simplified inclined connection","limitations":"Overall 4 ft 4 in assembly width follows A-AB-264. Tread width/count, rail section and landing transitions are simplified; no machinery or operational simulation."},{"id":"wtc2-escalator-B2","upperXZ":[-40.5216,-80.87322],"lowerXZ":[8.74816,-80.36855],"upperEL":332,"lowerEL":310,"widthFt":4.333333333333333,"treadWidthFt":3,"inclineDegrees":30,"railHeightFt":3,"illustrativeRiserFt":0.65,"source":"A-B-20 / A-B-22 endpoints; A-AB-264 shared A1/A2 and B1/B2 section. NIST NCSTAR 1-7 Figure 2-5 corroborates the connection.","status":"plan-traced endpoints; simplified inclined connection","limitations":"Overall 4 ft 4 in assembly width follows A-AB-264. Tread width/count, rail section and landing transitions are simplified; no machinery or operational simulation."}],"checks":[{"floor":1,"source":"A-B-20, PANYNJ release 12673, PDF page 410","openingCount":53,"areaSqFt":39466.103,"atriumCount":0},{"floor":2,"source":"A-B-22, PANYNJ release 12673, PDF page 413","openingCount":56,"areaSqFt":29596.852,"atriumCount":2}]}