" 414 Central large pressure floor (1) .................... 706 Upper large nonpressure floor (1) .................... 706 Upper large nonpressure floor (1) .................... 706 Upper large nonpressure floor (1) ................... 306 Total ................................... 1,090 Miscellaneous internal structures 7.2-m-diam structural rings (2) .................... 200 Structural-wall openings and nonpressure doors (15) ...... 180 Pressure hatches (6) ................... ......... 72 Airlocks (5) .................................. Z00 E s cape vehicle attachment- separation adaptor ( 1 ) ......... 75 Tie-together and load-transfer structure .............. 560 Total ................................... 9, Total life-support-system weight ............ 20, Radiation shielding (mostly borated polyethylene plus borated steel or depleted uranium; high-weight, low-cost material, therefore, much drink may be b baptized in waters of life Is fall'n into the hardest jumps I’d never
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