ELASTIC CONSTANTS OF ROCKS- 
Carrara Marble. 
No. ... 
a 
b 
6 
C 
C 
Size .. 
1.032 X 1,035 
1.017 X 1.016 
.985 
.985 
Area . . 
1.07 
1.033 
1.033 
.762 
.762 
.... 
8,120,000 
7,800,000 
8,055,000 
8,210,000 
8,045,000 
<r 
.281 
.274 
.273 
.275 
.269 
D .... 
6,170,000 
5,750,000 
5,920,000 
6,100,000 
5,790,000 
C 
3,170,000 
3,060,000 
3,160,000 
3,210,000 
3,170,000 
LONGITUDINAL COMPRESSION. MULTIPLY READINGS BY 4 FOR MILLIONTHS. 
Load (in 
pounds). 
Side 
U. 
- Side 
P. 
Side 
U. 
Side 
P. 
Side 
U. 
1,000. 
2 ( 000 . 
3,000. 
4,000 
5,000 
6,000 . 
7,000 . 
8,000 
9,000 . 
8,000. 
7,000. 
6,000 . 
5,000 . 
4,000. 
3,000. 
2,000 . 
T.OOO. 
O 
35 
75 
no 
145 
1 80 
216 
216 
185 
152 
118 
82 
44 
o 
O 
4 
80 
120 
1 60 
205 
240 
275 
310 
290 
247 
210 
171 
125 
85 
45 
5 

35 
80 
120 
1 60 
200 
235 
270 
300 
295 
260 
215 
170 
130 
90 
30 
-5 
O 
50 
IOO 
150 
20O 
2 5 
250 
2IO 
1 60 
105 
53 
o 

50 
IOO 
155 
.205 
255 
255 
2IO 
165 
no 
55 
4 
LATERAL EXTENSION. MILLIONTHS. 
No 
a 
b 
b 
C 
Size 
1.032 
1.016 
1.017 
.985 
Load (in pounds). 
Side 
P. 
Side 
U. 
I,OOO 
o 
30 
62 
95 
130 
165 
20O 

35 
75 
1 10 
145 
183 
'183 
150 
1 20 
3 
40 
4 
O 
37 
73 
108 
141 
177 
177 
1 80 
112 
75 
35 
2 

45 
95 
130 
175 
217 
217 
180 
137 
IOO 
50 
4 
2,000. 
3,000. 
4 OOO 
5,000 
6,000 
7,000 
8,000. 
9,000. 
8,000. 
7 ooo 


200 
170 
154 
105 
/O 
35 
3- 
6,000 . . . 
5,000 
4,000. 
3,000. . 
2,000. 
I OOO 


