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Scotch
Christiania, Spruce..
Quebec
New England

Norway
Larch

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0003017

.0002681

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·0007463 •0007078

·0003704
.0003168

Barlow
Tredgold

Barlow
Tredgold

Mean
Tredgold

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16
1
1

Lime-tree
Mahogany, Honduras

Spanish ..
Maple, common
Oak, English

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0005287
0006068

·0002939
0002520

Barlow
Tredgold
Ebbels

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•0003596 ·0002392 •0003172 .0002895 .0002395 · 0001944 ·0001562 .0004873 .0003810 .0002712 .0003411 ·0001923 .0003966 .000 1050 ·0003330 •0003942 .0002239 • 0001447 •0003708 .0005378 ·0003527 .0002318 • 0002661 ·0003216 •0005663 0001211 0001790 .0005161 •0007627

(4)

6
5
1
12
3
3

1,201,340
1,806,000
1, 244, 240
1,492,230
1,803, 760

873,800
946,950

886,500
1,133,850
1,592,920
1,255,450

877,514
1,089, 260
1,066,670
1,297,300
1,095,900
1,929,440

971,440
1,165,050

803,273
1,224,840
1,838,600
1,623,450
1,313,280

762,850
1,025,880
2,413,410

837,050
566,409
(7)

.001863
·001239
• 001798
.001500
.001241
.002561
·002363
·002524

001973
·001405
•001782
·002550
.002070

002098
. 001725
·002042
.001160
. 002304
·001921
·002786
•001827
.001216
·001378
.001660
·002933
002182
.000927
·002673
.003951

(8)

Mean

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Barlow

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.0002384
·0005319
.0001327

.0002092
•0003327
.0002937

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1

Ebbels
Barlow

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Canadian
Adriatic

Dantzio
Pear-tree
Pine, Pitch

Red..

American
Plane-tree
Poplar, Lombardy
Sycamore
Teak
Walnut
Willow

(1)

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Tredgold
Ebbels

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(2)

(3)

(5) TABLE 106.-Of the DEFLECTION of

Lengths between supports, 13.5 ft
Depth

1.027 inch. Breadth ..

... 5.510 inches.

Length between supports, 13.5 ft.
Depth
1.515 inch,

Per-
Weight in Breadth ::

5.523 inches.

manent Centre,

Set.
Deflection. Modulus of

Elasticity in
By Ex- Calcu- Lbs. per Square
periment. lated. Inch.

Deflection. Modulus of

Elasticity in By Ex Cal- Lbs. per Square periment. culated. Inch.

lbs. 28

56

..

112 168 224 280 336 392 448 504 560 616

672 728 781

inches.
• 051 0561 31,092,700
• 112 •1123 27,672,000

-3585 •3613 27,817,800
• 232
• 2246 26,717,000

• 7200 •7226 27,701,900 • 344 •3368 27,028,500 .001 |1.0700 1.084 27,960, 700 • 458 •4491 27,067,900 .002 1.3940 1:445 28,616,000 •571 •5614 27,139,000.003 1.7410 1.804 27,477,800 .684 .6737 27,186,600 .003 2.1590 2:168 27,778,500 .800 •7860 27,118,600 .004 2.5065 2.529 27,851,000

.916 .8982 27,067,900 006 2.8015 2.890 28,478,100 1.005 1.010 27,754,700 .007 3.1635 3.252 28,371,800 1.124 1.223 27,573,600| +008 3.6095 3.613 27,629,000 1.222 1.235 27,895,000 .010 3.9595 3.974 27,705,300 1.332 1.374 27,921,400 .011 4.3370 4.336 27,593,300 1.434 1.459 28,096,500 .017 1.547 1.572 28,047,700 .019

..

..
1.693 1.684 27,459, 600 .019
1.824 1.797 27,264,200 .019
1.933 1.909 27,256,900 .020
2.044 2.021 27,293,000 .021
2.165 2.133 27,199, 100 .022
2.256 2.246 27,470,000
2.461 2:470 27,705,800
2.546 2.582 27,998,100
2.659 2:695 27,978,100
3:057 3:144 28,387,100 .024
3.567 3.592 27,803,300
4:160 4.042 26,820,600 .268

840 896 952

1008 1064 1120

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1568 1792 2016

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: : :

“Limit of Elasticity" = 788 lbs. (2) (3)

.9040

.9032

27,579,300

1.084

1.093
1.299
1.536

1.264
1.445

27,384,900
26,870,000
25,970,500

“Limit of Elasticity” = 1722 lbs.
(3)

(4)

(2)

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• 398

100 •117 200 .225 300 .333 400 • 427 500 • 534 600

.632 700 •741 800

.860 900 .982 1000 1.092 1100 | 1.192 1150 / 1.242 1200 | 1.302 1300

1.372 1400 1.512 1450 1.562 1500 | 1.662 1600 1.832 1710 | 2.062 1766 | 2.302 1822 2.662 1878 3:042

•1058 27,262,900 • 141 • 2116 28,353,400 • 268 3174 | 28,736,600 • 4232 29,880,600 •522 •5290 29,866,700 .653 .6348 30,187,000 .804 •7416 30,132,700 •924 .8164 | 29,672,200 || 1.064 .9522 29,234,100 1.194 1.058 29,210,000 || 1.274 1.164 29,435,800 || 1.454 1.217 29,534,800 1.504 1.270 29,398,600 1.594 1.375 30,223,700 1.924 1.481 29,534,800 || 2.884 1.534 29,610,000 || 3.294 1.587 28,788,400 1.693 27,858,200 1.809 26,452,400 1.868 24,470,000 1.928 21,832,200 1.987 19,692,200 2.046 15,530,000

•1338 28,599,600 • 2676 30,093,500 • 4014 | 30,396,000 •5352 30,900,650 .6690 30,877,000 .8028 30,093,500

•9366 30,549,500 1:0704 30,300,000 1.204 30,396,000 1.338

31,652,500 1.472 30,507,500 1.539 30,833,800 1.606 30,357,800 1.739 27,246,800 1.873 19,597,400 1.940 17,759,800

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