APPENDIX J.— Continued.
a O
61
RECORD OF SINKING CAISSONS
.CUTJ .0 b .K T P! ICA
PIEK IV.
Date.
Elevations of Cutting EdgeAbove Mean Sea Level.
Sunk in24
Total
SlNKAGE.
Elevations of Sand.
Original Elevation = 175.85.
Average
Pene-
Water
Gauge.
Depth
Immersed.
Weights.
... . . - . 1 .
Air Pressure.
1888.
. N.E.
N.W.
S.E.
s.w.
Average.
Hours.
N.E.
N.W.
S.E.
S.W.
Average.
Caisson.
Caisson.
Sand.
Water.
Total.
Indicated.
Calculated.
Nov. 24
Tons.
Tons.
Tons.
Tons.
Lbs.
Lbs.
if
26
Dec.
<
15
17
23
27
28
<f
It
174.4
175.4
173.28
i.i.9
191.4
19.31
1823
1823
5.5
8.38
29
168.92
168.40
169.17
168.79
168.82
3.27
7.03
171.7
168.7
172.7
178.7
i'
172.95
4.13
191.7
22.88
2416
2416
8.0
9.0
9.5
9.93
11.28
11.57
30
166.72
166.14
165.80
165.34
166.00
2.82
9.85
173.5
174.0
179.0
169.0
173.88
7.88
192.0
26.00
2498
2622
2498
2622
v
31
166.58
t; .
166.04
165.80
165.34
165.94
<>': 06
9.91
170.6
166.6
173.6
177.6
172.10
6.16
192.6
26.66
.........
1889.
Jan. 1“ 2
161.74
160.06
163.03
160.84
162.45
159.59
163.79
160.49
162.75
160.25
3.19
2.50
13.10
15.60
171.2
167.6
170.2
167.6
173.7
173.6
176.7
177.6
172.95171.60172.20172 20
‘10.20
11.35
193.2
193.6
. . tj
30.4533.35
36.4637.11
2918
3232
3272
3518
.
il
2918
3232
13.0
14.0
14.5
1S fl
13.22
14.47
15.82
ns 11
11
3
156.92
156.84
157.62
157.56
157.24
3.01
".65
18.61
168.7
167.7
173.7
174.7
178.7178 7
14.96
15.61
193.7
193 7
8272
851ft
11
4
156.06
156.28
156.87
156.54
156.59
19.26
167.7
167.7
tt
5
154.03
154.09
154.11
154.15
154.10
2.49
21.75
167.5
166.5
180.0
176.5
172.62
18.52
193.5
39.40
; 3943
0 .1).
4092
3943
4092
15!s
l-
T5.0
17.0
18.0
19.5
20.0
17.10
17.66
18.32
19.37
20.73
11
6
151.84
151.87
152.91
1 152.96
152.40
1.70
23.45
167.1
166.6
173.1
173.1
169.98
17.58
193.1
b
40.70
n
u
7
150.16
150.21
150.98
151.02
150.59
1.81
25.26
165.8
172.8
166.8
184.3
172.42
21.83
192.8
42.21
4112
4129
4133
4112
4129
4133
**
8
147.76
147.99
147.96
148.21
147.98
2.61
27.87
167.6
'163.6
176.6
182.6
172.60
24.62
192.6
44.62
'
tt
9
10
144.87
144.87
144.91
144.91
145.35
145.32
145.44
145.42
145.14
145.13
2.84
.01
.00 i
30.71
30.72
166.9
166.9
176.9
186.9
174.40
29.26
192.9
47.76
it
11
144.87
144.91
145.32
145.42
145.13
30.72
30.73
1:165.2165.1
164.2
165.1
174 7
1«f> 7
172 45
27 3^
1^4 9
49 n?
4165
■■V ■ .
A1 A*
“
12
144.86
144.90
145.30
145.42
145.12
.01 :
179.1
183! 6
173^22
28.10
195.1
49! 98
4190
4190
20.0
21.69
<<
13
14
15
143.19
142.18
139.11
143.23
142.23139.18
143.60
142.67
139.55
143.74
142.82
139.72
143.44
142.47
139.39
1.68 '.973.08
32.41
33.38
36.46
165.6
165.0
164.0
163.6
167.0
166.5
168.6
173.0
171.5
185.6
183.0
181.5
170.85
172.00
170.87
27.41
29.53
31.48
r 196.6
0 198.0199.5
53.1655.53" 60.11
4190
4190
4190
5 117
212
400
4307
4402
4590
"22!5 '24.0
25.0
26.0
23.07
24.10
26.09
27.37
28.07
28.91
29.82
30.04
30.26
30.62
31.4032.49
32.41
«
16
137.31
137.38
137.82
138.01
137.63
1.76
38.22
163.7
165.7
t ■ ;
171.7 J
1
isi 7
170.70
33.07
200.7
63.07
4190
1 520
4710
4785
f f
17
136.45
136.52
136.89
137.07
136.73
.90
39.12
163.4
169.4
174.4
181.4
172.15
,35.42
201.4
64.67
, 4198
587
It
18
134.90
135.00
135.14
135.33
135.09
1.64
40.76
162.7
165.7
168.7
187.7
171.20
' 36.11
201.7
66.61
4206
664
4870
4948
4986
5010
5042
5205
1 53315344
„ 27.0
Bi 27.027.0
28.5
29.0
30.0
31.0
31.0
19
133.55
133.64
133.71
133.90
133.70
1.39
42.15
160.4
164.4
171.4
180.4
169.15
35.45
202.4
68.70
4206
742
4 t
20
133.54
133.61
133.71
133.90
133.69
.01
42.16
161.9
164.9
168.9
178.9
168.65
34.96
202.9
69.21
4213
773
t,
21
133.54
133.61
133.67
133.87
133.67
.02
42.18
165.4
163.4
168.4
178.4
168.90
35.23
203.4
69.73
4217
793
tt
22
133.48
133.56
133.49
133.68
133.55
' .12
42.30
161.1
165.1
168.1
177.1
167.85
34.30
35.59
36.11
36.68
204.1
70.55
4217
825’
it
23
24
25
132.23
129.98
129.98
132.24
129.96
129.94
132.23
129.86
129.82
132.36
129.96
129.94
132.26
129.94
129.92
1.29
2.32
.02
43.59
45.91
45.93
'161.6
161.8
161.6
164.6164.8
163.6
168.6
162.8
165.6
176.6174.8
175.6
167.85
160.05
166.60
204.6
204.8
204.6
72.34
74.86
74.68
4219
1 42194224
('•
4232
4232
4234
4234
4234
146
179
212
840
933
908
tt
11
tt
26
27
28
29
30
128.19
126.35
126.06
125.92
125.84
128.14
126.39
126.13
126.02
125.91
127.89126.21126.00
125.90125.80
128.02
126.33
126.07
125.94
125.87
128.06
126.32
126.06
125.94
125.86
1.86
1.74
.26
.13
.08
47.7949.53
49.7949.9149.99
i60.2
160.5
161.6161.5 '161.0
163.2
162.5
163.6163.0161.5
164.2
160.5
160.6
163.5
168.5
175.2
170.0
171.6
170.5
171.0
165.70
163.37
164.35
164.62
165.50
37.6437.0538.2938.68
39.64
204.2
203.5
202.6201.5201.0
76.1477.1876.5475.56
75.14
224
260
260
260
260
1001
1049
967
922
902
5457
5541
‘5461
5416
5396
32.0
31.5
31.5
31.5
32.0
33.04
38.50
33.22
33.79
32.61
“
31
125.70
125.83
125.72
125.73
125.75
.11
50.10
•161.3
160.8
169.3
169.8
165.30
39.55,
200.8
75.05
4234
260
898
5392
32.0
32.57
Feb.
II
....
1
2
3
A
5
125.46
125.35
123.62
423.61
122.90
125.59
125.45
123.72
123.71
123.03
125.34
125.34
123.68
128.67
122.98
125.39
125.39
123.76
128.73
123.05
125.45
125.88
123.69
123.68
122.99
' :30' .071.69.01.69
50.40
50.47
52.16
52.1752.86
161.9
162.3162.8
162.4
162.9
161.4161.8162.8
163.4
162.4
168.9
169.3
171.8
171.9
169.9
169.9
169.3168.8
169.4169.9
165.52
165.68
166.55
166.77
166.28
40.07:
40.30 *42.86:43.0948.29
200.9
201.3201.8
202.4
202.9
75.45
75.92
78.11,
78.72
79.91
4234
4234
4234
4234
4230
260
260
260 j260 -260
917
989
1040
1068
1124
5411
5433
5584
5562
5614
32.0
33.0
32.5
33.0
32.5
32.75
32.95
33.90
34.16
34.68
«•
6
7
8
122.90
122.90
122.90
123.03
122.96
122.96
122.98
122.88
122.88
123.05
123.03
123.03
122.99
122.94
122.94
.00
.05
.00
52.86
52.91
52.91
161.2
159.1
159.8
161.2
161.1
158.8
177.2
169.1
171.8
169.2169.1
168.3
167.20
164.60
164.68
44.21
41.66
41.74
203.2
203.1
202.8
80.21
80.16
79.86
4230
4230
260
260
1138
1135
5628
5625
33.0
33.0
32.0
30.0
34.81
34.79
9
122.90
122.96
122.88
123.03
122.94
.00
52.91
161.1
160.1
167.6
167.6
164.10
41.16
202.1
79.16
it
10
122.90
122.96
122.88
123.03
122.94
.00
52.91
201.1
78.16
_
_
ReactionDue toAir
Pressure.
Tons.
941
1115
1267
1300
1 14851625177718091921
1984
2058
2176
'2328
Net
Weight.
Tons.
882
1301
1231
1322
y 14331607149517092022
2108
2054
1953
1805
Surface
Contact.
AverageWeight perSq. Ft. ofSurfaceExposed toFriction.
Sq. Ft.
204
.. ,|.
-710
1355
1059
1754,195225732685^ 3186
3024. 375542355033
Lbs.
8647
3665
1817
2497
1634
1646
1162
1273
1268
1394
1094
921'
717
Material.
Fine river sand
Fine river sandMud
If
Coarse sand and gravel
2392
2436
2591
2707
2930
1773
1754
1716
1695
"1660
1
4699
4833
4714
5079
5414
755
725
728
667
613
3074
3153
3247
3349
3374
1636
1632
1623
1599
1612
5688 16092621160976013
575
536
523
524536
tt
n ft n ft.
if ft . ft f(
If tt’ it
Mud
Remarks.
Caisson built on shore; cutting edge placed.Began building.
Caisson launched.
Caisson placed in position.Began concreting.
Put on air at 8 p.m.
Started sand pump at 2 a.m.
K 1 '.
TT
' -• ’ I, . ..
TE.Om.
All timber of caisson proper in place.
Let oil air at 9.20 a.m. to put in last .foot of concrete without[air holes. Began building crib.
Crib completed.
I | I•’ ! 01 *
Let oil air at 4 p.m. to concrete around main shaft.Started air pumps at 4 a.m. .'J
■ .1
8399
1611
3439
1603
3527
1078
3649
1682
3640
1704
3711
1746
3763
1778
3731
1730
3683
1733
3663
1733
6060
531
5899
543
6121
548
6211
541
6309
540
6474
539
6373
558
6586
525
6653
521
6818
508
ft
'<) '
' ft
Clay
f <tl
3658
3678
3701
3808
3837
3895
1734
6802
509
1733
1732
1726
1725
1719
6892
6932
7372
7411
7446
508
499
468
465
461
Clay
tt
"..0
tit
Stopped sand pumps at 6.30 p.m. Pump men went on clay.. [hoist. Started well.
: (> ;
0
■ i.;
7 ': ■ -1 .. ■1 ; •' ' i ;
ve>v.f ; t:P* <■':! ! ■■■!
Took o£E clay hoist.
3910
3908
1718 7604
1717 7164
452
479
tl
tt
Began sealing at 10.30 a.m.
Stopped air pumps at 10.50 a.m.