THE TABLES of M. Garidel,

TABLE III.

Showing the Horizontal Thrust of an Arch, the Radius of whose Intrados is Unity, and the weight of each Cubic Foot of its Material and that of its Loading, Unity. (See Art. 344.)

N.B. To find the horizontal thrust of any other arch, multiply that given in the table by the square of the radius of the intrados and by the weight of a cubic foot of the material.

0:45

0.50

0-14124 017240 020374 0-23520 026674 0-29835
013619 0 16396 0.19168 0.21957 0-24760 0.27573

0.45693

0.41728

9:45

0:50

0:15097 0:18212 0-21344 0-244-8 0-27641
0-15099 0-17860 0-20642 023459 026247 029 65

015

0-20

0:05 0:06102 013346 0206210-27599 0-35178 042458 078857 0:10 0-08700 015053 021407 | 0:27760| 0-34113; 04466 ; 0-72283 0:10877 | 016567 022257 0-27947 0:33638 0:39328, 067778 0-12635 017785 0 22936 028087| 0-33239] 038391 | 064150 0-25 0-14037 0-18716 0-23399 0-28082 0:32767 0:37453 | 0-60886 0:30 0:15129 019381 0:23640 0-27902 032166 036432 0 7778 0:35 0-15948 019804 0-23669 0-27540 031415 0:35292 0-16525 0-20005 0-23497 0-26999 0-30506 0:34017

0547 V

0:40

051608

0:05

0.10

0.15

0-20

025

0.30

0:25

0.09355 0:16408 023605 0:30845 0-38101 0.45365 0.81731
011297 017592| 0^23922 0:30263 0.36609 0:42957 07471)
0:13295 0.18962 024640 0:30323 0-36009 0.41696
0:15038 0·20172 025314 030459
0-16493 0-21160] 0-25834 030513
017673 021917 | 026170: 0-30127
0.18599 0-22452 0·26314 0-30182 0-34055

070138

0:35606

0:40 0-19293 0-22777 | 0-26271 0:29773 0:33280
0:45 0.19774 022906 0-26050 0-29202 0:32361 0.35524
0.50 0'20060 0.22854 0.25661 0:28476 0.31299 034128

0:05 0.14749 0-21733 0.28854 | 0-36038 0.43255 0.10 0.15949 0.22174 0·28457 0:34768 0:41093 0.15 0.17605 0.23233 0.28886 0:34553 040226 0.20 0-19209 0.24321 0.29448 034583 0.39722 0.25 0.20627 0-25282 0-29948 0.34619 0:39294 0.21827 0-26066 0.30314 | 0-34568 0.38825

0:30 0:35

0:40

050490 | 0-86784 0-47426 | 0-79141 0459049-74322

0:44865 070598 0:43972 067382

0:43085 0·64406

0:34062

0:38259
0.37571

0 42133
0:41083

061529

0.58673

0 22805 0.26659 0·30521 0.34388 0:23570 027060 | 0·30558 0:45 024130 0 27275 0-30427 0.33586 0-36749 0-39916 055787 0·27312 | 0·30132 | 0.32958 0.35789 0:38625 0.52845

0.50 0-24499

044305 | 0·51485 0.58688
0:42034 0.48333 0.54646

0.94881 0.86300

0.47013 0.52678 0-81059 0:46281 051415 077124 045744 0-50417 0.73809

0:05 0-23105 0.30081 0:37162
0.10 0.23318 0-29507 0.35754
0.15 0.24478 030079 0.35708 0:41355
0.20 0*25819 0.30915 0:36028 0-41151
0.25 0-27104 031752 036410 | 0·41074
0.30 0.28248 0.32486 0.36731 0:40981 0 45235 0:49493
0:35 0.29216 0:33073 036935 040803 | 0:44674 | 048547
0:40 0-29997 0.33494 0.36998 0:40506 044016 047530
0:45 0:30589 0:33745 0.36907 040072
0.50 0.30996 0.33824 0:36657 0.39494

0.70803

0:67939

0.65123

0:43240 | 0:46412

0.62294

TABLE IV.

Mechanical Properties of the Materials of Construction.

Note. The capitals affixed to the numbers in this table refer to the following authorities: