Compressed Air Work And Diving 1909
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TAB LE I.
[A. E. Boycott, G. C. C. Damant, and J. S. Haldane.]
Stof pages during the Ascent ofa Diver af ter Ordinary Limits of Time
from Surface.
De Feet. pth. Fathoms Pressure. Pounds per sq. in. Time from Surface to Beginning of Asceut. Approx Time tc First Stop. Stoppages in Minutes at different Depths.* Total Timefor Ascent in mins.
60 ft 50 ft 40 ft 30 ft 20 ft 10 ft
0-36 36-42 42-48 48-54 54-60 60-66 66-72 72-78 78-84 84-90 90-96 96-108 108-120 120-132 132-144 144-156 156-168 108-180 180-192 192-204 0-6 6-7 7-8 8-9 9-10 10-11 11-12 12-13 13-14 14-15 15-16 16-18 18-20 20-22 22-24 24 26 26-28 •28-30 30-32 32-34
0-16 16-18£ 181-21 •21-24 ‘24-264 26|-29| 29J-32 32-34^ 34^-37 37-40 40-42J 421-48 48-53| 53^-59 59-64J 64|-70 70-75 75-80 i 80A-80 86-91Å No limit - Over 3 hours - C Up to 1 hour - 41 to 3 hours ( Over 3 hours - / Up to | hour - | | to hours - i l.j to 3 hours - ( Over 3 hours - /Up to 20 mins. 20 to 45 mins. - f to H hours - H to 3 hours • (Over 3 hours - ’ Up to £ hour - i to i hour < | to 1 hour 1 to 2 hours .2 to 3 hours / Up to hour - 1 J to hour I -!> to 1 hour (1 to 2 hours ( Up to 20 mins. •! 20 to 45 mins. - ( y to 1 j hours - [ U p to 20 mins. ! 20 to 45 mins. - l j to hours - /Up to 10 mins. 1 10 to 20 mins. - i 20 to 40 mins. - ( 40 to 60 mins. - f Up to 10 mins. 1 10 to 20 mi ns. - i 20 to 35 mins. - (35 to 55 mins. - / Up to 15 mins. -[ 15 to 30 mins. - [ 30 to 40 mins. - C Up to 15 mins. 4 15 to 25 mins. - (25 to 35 mins. - / Up to 15 mins. ) 15 to 30 mins. - f Up to 12 mins. ( 12 to 25 mins. - ( Up to 10 mins. ) 10 to 20 mins. - ( Up to 10 mins. 5 10 to 16 mins. - 6 Up to 9 mins. - ( 9 to 14 mins. - Up to 13 mins. Up to 12 mins. i 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 ... ... 2 2 2 2 3 2 3 3 3 3 3 3 5 2 5 2 5 3 5 3 3 5 5 5 10 3 5 10 3 10 5 10 10 3 5 10 3 10 3 7 10 3 5 10 10 10 10 5 7 5 i 7 1 7 10 10 20 5 10 15 20 5 10 15 20 2 12 20 5 10 20 5 15 20 3 15 15 3 15 15 5 10 15 7 10 15 7 15 12 5 12 5 10 10 10 10 0-1 6 U 6| 114 7 12 2 7 12 22 32 2 7 15 22 32 4 10 19 32 7 17 32 7 22 32 10 22 30 6 10 22 30 11 23 33 15 23 33 17 33 16 32 16 32 18 30 18 30 30 32
During each stoppage the diver should continue to movc his arms and legs.