1903.] Stress and Strain in the Cross-section of a Beam. 29 



Table VIII (see fig. 6). — Stress and Lateral Strain in Cast Iron for 

 comparison with Beam No. 2. 



Tension. 



Compression. 



Stress 

 kilos, per 

 sq. cm. 



Lateral strain 

 (elastic only). 



Stress 

 kilos, per 

 sq. cm. 



Lateral strain 

 (elastic only). 



169 

 337 

 506 

 675 

 843 

 1012 

 1181 

 1350 

 1518 

 1687 



3 -37 x 10-" 5 



6*80 

 10 -25 

 13 -65 

 17 -08 

 20-45 

 23 -85 

 27 32 

 30 -75 

 34 -25 



207 

 414 

 621 

 828 

 1035 

 1243 

 1450 

 1657 

 1864 

 2071 

 2278 

 2485 



3 -95 x 10~ 5 



8-12 

 12 -48 

 16 83 

 21 -28 

 25-70 

 30-14 

 34 -53 

 38 -98 

 43 -45 

 47 '85 

 52 30 



Table IX (see fig. 6). — Stress and Lateral Strain in Wrought Iron 

 under Compression. 



Load. 



Increments 

 of strain 

 (scale divisions). 



Total strain, 

 scale divisions 

 (elastic only). 



Elastic 

 lateral strain. 



Stress, 

 kilos, per 

 sq. cm. 



Tons. 











i 



2 



1 -80 



1-80 



1 '58 x 10~ 5 



112 



1 



1 -84 



3 -64 



3-20 



224 





L-85 



5-49 



4-83 



336 



2 



1 -90 



7'39 



6-50 



448 



3 



3-80 



11 -19 



9-85 



672 



4 



3-82 



15*01 



13 -21 



895 



Table X. — Cast-iron Beam No. 1. 



Point in 



depth 

 of beam. 



Total strains at different loads. 



(Scale divisions.) 



















to \ ton. 



1 ton. 



1^ tons. 



2 tons. 



2i tons. 



1 



9-36 



18 



•99 



29 



•11 



39 



•41 



45 -14 



2 



6 -48 



12 



•30 



18 



•45 



24 



•62 



27-69 



3 



2-40 



4 



•32 



6 



•41 



8 



•60 



9-44 



4 



o-oo 







•06 







•09 



- 



•03 



- 0-34 



5 



-2-20 



- 4 



•08 



- 6 



•21 



- 8 



•50 



-10-19 



6 



-5-90 



-11 



•15 



-16 



•75 



-22 



•75 



-26 -20 



7 



-9-74 



-19 



•14 



-28 



•14 



-36 



•69 



-40-65 



