222 



Journal of Agricultural Research 



Vol. VI, No. 6 



STRESS DISTRIBUTION OVER THE WHOLE SLAB 



For the purpose of determining the distribution of stress over the top 

 of the whole slab, deformation readings at right angles to each other 

 were taken on slab 934 for a working load of 10,000 pounds concentrated 

 at the center. 



Fig. 16. — Deflection curves for slab 934 vrith 2-point loading. 



Figures 20 and 21. — The deformations measured perpendicular to the 

 supports and plotted on base lines parallel to the supports are shown in 

 figure 20. These curves show the variation of deformations along lines 

 parallel to the supports. The same deformations plotted on bkse lines 

 perpendicular to the supports, to show the variation in that direction, 



