Soil tests for expansion of Philadelphia Southwest Airport revealed need for extreme care in placing fills to avoid formation of mud waves; specifications required that compaction should be done with tractor weighing at least 17 tons; field tests showed that 95% compaction was obtained from hauling and spreading operations, and 110 to 115% by six passes of tractor.
Heavy tractors compact swamp fill for airport enlargement
Eng News-Rec
Engineering News-Record ; 140 , n 24
1948
2 pages
Aufsatz (Zeitschrift)
Englisch
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