FUTURE DEMAND TOR TIMBER 



393 



u-i 



o 



10,000 

 8,000 



6,000 

 4,000 



2,000 



200 



100 



NOTE: Chart is plotted on a logarithmic scale. 

 Equal vertical distances denote equal 

 percentage change. 



VOLUME OF MAINTENANCE 

 AND REPAIR 



VOLUME OF ALTERATIONS 

 AND ADDITIONS 



> 



NUMBER OF HOUSEHOLDS 



20 



1915 '20 '25 "30 '35 



SOURCE: U.S. Department of Labor, U.S. Department of Commerce 



'40 



'45 



10 



'50 



'55 



Figure 116. — Estimated volume of residential alterations and additions, 1915-55; and of residential maintenance 

 and repair, 1915-54; in dollars at 1953 prices; number of households, 1915-55. 



