Agriculture Reference
In-Depth Information
strength and you can cut it with a knife! Thus the soft rubbing bricks with small
joints of overtly weak lime putty:sand mortar can perform magnificent tasks in
buildings. The evidence is not only out there in the buildings but can be easily
numerically substantiated in the professional design standards.
Table 3
Crushing Strength of Bricks (UNWIN), Mitchell & Mitchell, 1904 (Single bricks. Faces
made smooth and parallel by plaster of Paris).
Description
Dimensions
Cracked at tons
Crushed at tons
Colour
Remarks
per sq. ft.
per sq. ft.
London Stock max.
9
2
4
2
8
-
185
-
Twelve from
Different
London Stock min.
8
8
4
0
2
5
84
89
Yellow
localities
London Stock mean
9
0
4
2
2
6
-
121
Error!
-
Aylesford common
8
9
4
4
2
7
48
183
Pink
Aylesford common
8
9
4
4
2
7
111
228
Pink
Aylesford pressed
9
1
4
3
2
7
71
141
Red
Frog
Grantham wire-cut
9
2
4
2
3
2
-
83
Red
Leicester wire-cut
8
9
4
5
3
2
228
246
Red
Leicester wire-cut
9
1
4
2
2
8
115
229
Red
Leicester wire-cut
4
4
4
2
2
7
225
365
Red
Mean of 7 half
bricks
Gault wire-cut max.
8
9
4
3
3
0
119
198
White
Gault wire-cut min.
8
7
4
1
2
7
89
145
White
Gault wire-cut mean
8
8
4
2
2
8
-
178
White
Arlesley white max.
9
1
4
2
2
9
-
207
White
Arlesley white min.
8
8
4
1
2
7
50
107
White
Arlesley white mean
8
9
4
2
2
7
-
161
White
Arlesley white wire-cut
9
0
4
2
2
7
151
239
White
Coventry wire-cut
4
5
4
4
3
0
-
256
Red
Half brick
Fletton
8
6
4
2
2
7
137
203
Pink
Fletton
8
8
4
1
2
7
126
169
Pink
Fletton
8
6
4
2
2
7
199
239
Pink
Glazed brick wire-cut
8
8
4
4
3
3
69
166
White
Frog
