378 



STEEL STAND-PIPES AND ELEVATED TANKS ON TOWERS. CHAP. XI. 



The details work out very satisfactorily. Mr. Wolff has designed a number of elevated tanks 

 and towers following the standard details in the Jackson tank. The details of construction are 

 shown by the drawings. 



STAND-PIPE 

 20 FT. IN DIAMETER 

 90 FT. HIGH 



General Notes: 



Actual capacity of Stand-pipe = 211 490 gaL 

 Wind load = 30 lb.pr 8q.ft.onVj diameter 

 Ultimate strength In plate! =12 000 Ih.per BqJn. 

 Rivets: shear=9000 Ib.per sq.in. 

 Bearing on plate=18 000 Ib.per sq.ln. 

 Material and workmanship according to 

 General Specifications for Elevated Steel 

 Tanie and Sund- Pipes. 



FIG. ii. 



STANDARD PLAN OF STAND-PIPE, BY C. W. BIRCH-NORD. 

 (Trans. Am. Soc. C. E., Vol. 64, 1909.) 



SPECIFICATIONS. The details of design of steel stand-pipes and elevated tanks on 

 towers are given in the specifications prepared by Mr. C. W. Birch-Nord and the specifications 

 of the American Railway Engineering Association. Both of these specifications are printed in 

 the last part of this chapter. 



