Compressed Air Work And Diving 1909
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8
COMPRESSED AIR WORK.
TABLE II.
[A. E. Boycott, G. C. C. Damant, and J. S. Haldane.]
Stoppages during the Ascent of a Diver af ter Delay beyond the Ordinary
Limits of Time from Surface.
Depth. Pressure. Pounds Time from Surface to Beginning of Approx. Time to Stoppages in Minutes at different Depths. Total Time for
First Stop. Ascent in mins.
Feet. Fathoms. per sq.in. Ascent. 80 ft. 70 ft. 60 ft. 50 ft. 40 ft. 30 ft. 20 ft. 10 ft.
60-G6 10-11 •26J-29A Over 3 hours - 2 10 30 42
66-72 11-12 29A-32 f 2 to 3 hours ( Over 3 hours - 2 10 20 30 30 42
72-78 12-13 32-34J f 1| to 2J hours - ( Over hours - 2 2 20 30 25 30 47 62
( to 2 hours - 2 15 30 47
78-84 13-14 34^-37 -! 2 to 3 hours 2 5 30 30 67
1 Over 3 hours - 2 10 30 35 77
fl to 14 hours - 2 5 15 25 47
84-90 14-15 37-40 - to hours - 5 30 35 72
lOver 2Jj hours - 2 •20 35 35 92
H to 1| hours - 2 5 15 30 52
90-96 15-16 40-421 4 to hours - 9 10 30 35 77
[Over 2| hours - 2 30 35 35 102
l 40 to 60 mins. - 2 10 15 20 47
96-108 16-18 42^-48 4 1 to 2 hours 2 5 15 25 35 82
lKOver 2 hours - 2 15 30 35 40 122
( 35 to 60 mins. - 2 5 10 15 25 57
108-120 18-20 48-53^ -! 1 to 2 hours Q 10 20 30 35 97
1. Over 2 hours - 2 30 35 35 40 142
( 30 to 45 mins. - 3 5 10 15 20 53
120-132 20-22 53^-59 -! 2 to 14- hours - 3 5 10 20 30 30 98
[ Over H hours - 3 15 30 35 40 40 163
125 to 45 mins. - 3 3 5 10 15 25 61
132-144 22-24 59-64^ - f to 14 hours - 3 10 10 20 30 35 108
(Over 1| hours - 3 30 30 35 40 40 178
T 20 to 35 mins. - 3 3 5 10 15 20 56
144-156 24-26 64>-70 ■I 35 to 60 mins. - 3 7 10 15 3(1 30 95
[Over 1 hour 3 20 25 30 35 40 40 193
(' 16 to 30 mins. - 3 3 5 10 15 “20 56
156-168 26-28 70-75 K 30 to 60 mins. - 3 3 10 10 15 30 30 101
(Over 1 hour 3 5 25 25 30 35 40 40 203
l 14 to 20 mins. - 3 3 3 7 10 15 41
168-182 28-30 75-801 I 20 to 30 mins. - 1 30 to 60 mins. - 3 3 3 2 3 2 7 3 10 10 20 15 30 25 35 60 111
(Over 1 hour 3 15 25 30 30 35 40 40 218
(13 to 20 mins. - 3 3 3 7 15 15 46
182-194 30-32 80|-86 | 20 to 30 mins. - 3 3 3 5 10 15 25 64
| 30 to 60 mins. - 3 3 10 12 20 30 35 118
(Over 1 hour 3 5 20 25 30 30 35 40 40 228
(12 to 20 mins. - 3 3 3 5 7 10 20 51
194-206 32-34 86-9U 1 20 to 30 mins. - 3 3 3 3 5 10 20 20 67
I 30 to 60 mins. - 3 3 3 5 10 15 20 30 35 124
1 Over 1 hour 3 15 20 25 30 30 35 40 40 238