Pocketbook of Useful Formulæ and Memoranda
for Civil and Mechanical Engineers

G78 moleswobth’s pocket-book Length of Circular Arcs. ,. Tabla of differsace between th« chord and tho are; chord being - 1 'CO. To find th« length of any arc, divide tliu versed sine by the chord, and hiul Iba talMilnr No. (diff.) duo to the result; then Length ot arc _ chord X U + diff)■ Vers. •030 •001 | 002 | •003 •004 •005 •006 ■007 •008 •cw Chord. I diff. I diff. I diff. | diff.f | diff. J | diff. diff. cliff. : diff. •100 0270 •0275 •0281 0286 0291 •0297 ■0303 •Ü308 0314 ’110 • 0320j •03251 •0331, •0337 0343 0349 *0355 •0361 ■0367 0373 • 120 •0380| •0386 •0392 •0399 0405 0412 •0418 * 1)425 •0431 043s • 130 •0445 •0451 •0458 •0465 •0472 0479 •0486 •0493 •0500 •0574 0307 ’140 '0515 •0522 •0530 •0537 •0544 0552 •0559 •0567 0582 • 150 •0590 •0597 •0605 •0613 ■0621 0629 •0637 •0645 •0653 0661 •160 •0GG9 ■0677 •0686. •0694 •0702 •0711 •0719 ■0728 •0736 0745 j17o •0754 •0762 ■0771 •0780' •0789 •0798 •0807 •0816 *0825 0S34 ‘180 •0843 •0852 •0861 •0870 •0880 •0889 •0898 •0908 -0917 0927 '190 •0936 •0916 •0956 •0965 •0975 •0985 •0995 •1005 *1015, 1025 *200 •1035 •1045 •1055 •1065 •1075 •1085 '1096 •1106 ’ 1116 1127 '210 •1137 •1148 •1158 ■1169 •1180 •1190 •1201 •1212 ■1222 1233 ’220 •1244 •1255 •1266 ■1277 •1288' •1300 •1311 ■1322 *1333 •1436,‘1448 1344 •230 •1356 •1387 •1379 ■1390 •1402 •1414 •1425 1460 *240 •1471 •1483 •1495 •1507 •15191 •1531 •1543 •1555 •1567, 1579 •250 •1591 •1603 •1616 •1628 •1640 •1653 ■1665 •1677 ■1690 1102 •260 •1715 •1727 •1740 •1753 •1765 ■1778 •1791 •1804 •1816 1829 •270 •1843 •1856 •1869 •1882 •1895 •1908 •1921 •1934 'ia48j 1961 •280 •1974 •1988 •2001 •2015 •2028 •2042 •2056 '2070 •2Ü83 2097 •290 •2111 •2124 •2138 •2152 ■2166 •2179 •2193 •2206 -2220 2235 *300 "2249 •2263 •2278 •2292 •2306 •2320 •2335 •2349 '2364| •237« •310 •2392 •2407 •2422 •2436 ■2451 •2465 •2480 •2495 "2509 •2644 '26591 •2524 •320 •2539 •2554 •2569 •2584 •2599 •2614 ■ 2629 •2674 •330 •2689 •2704 •2720 •2735 •2750 •2766 •2781 •2796 -2812 •2827 •340 •2843 •2858 •2874 •2889 ■2905 •2921 •2937 •2952 -2968 ■2984 •350 •3000 •3016 ■3031 •3047 •3063 ■3079 •3095 ■3111 •3128 •3144 •360 •3160 •31T6 •3192 •3209 •3225 •3241 •3258 •3274 -3290 •3440/3456 •3307 •370 *3323 •3340 •3356 •3373 •3390 •3406 •3423 •3473 •380 •3490 •3507 •3524 •3541 •3557 •3574 ■3591 •3608-3625 •3642 •390 ■3660 •3077 •3694 *•3711 •3728 ■3745 •3763 •3780 '3797 •3815 •400 •3832 •3850 •3867 •3885 •3902 •3920 • 39371’3955 ’39721 • 3990 •410 •4008 •4025 •4204 ,•4043 ' '4061 •4079 •4097 •4114 ■4132 •4150 •4168 •420 •4186 1'4222 •4240 •4258 •4276 •4294 •4313 -4331 •4349 •430 •4367 •4386 •4404 •4422 •4440 <4459 ■4477 '4496 *4514 •4533 •440 •4551 •4570 •4588 '•4607 ■4625 •4644 •4ßü3 ‘>4681 • 4700 •4719 •450 1'4738 •4756 •4775 |'4794 •4813 •4832. '4851 1«48T0 -4889 •4908 •460 1’4927 •49-1C •4965 •4984 •5003 •5022 •5042, '5Ü61 -50S0 •5099 •470 [•5118 • 5138 •515s 1-5176 •5196 ■ 5215i • 5235 ' 5254, • 5274 •5293 •480 1’5313 •5332 • 5352 •53H ■5391 •5411 j'5430 ‘5450, •5470 •5489 •490 1-5509 •552S •554t '■55GS •55 «8 •5608 ,‘5648 ’5668 •5688 •500 >5708 —• — 1- I