Steel frame doors that disappear below floor level when in open position are being used on two airplane hangars at Garner Field in Texas to provide 20 1/2 × 100-ft end openings; doors fold into 5 1/2-ft deep trench; their construction calls for exterior covering of 30-in. wide, longitudinal leaves of sheet metal and these leaves are stacked side by side when door is lowered into trench. (see also Engineering v 154 n 4002 Sept 25 1942 p 247-8 (illustrations) p 250)
Collapsible doors for airplane hangars
Eng News-Rec
Engineering News-Record ; 128 , n 19
1942
3 pages
Article (Journal)
English
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Collapsible doors for airplane hangars
Engineering Index Backfile | 1942
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