UNITED STATES DEPARTMENT OF AGRICULTURE 

 BULLETIN No. 376 



Contribution from the Office of Public Roads and Rural En^eering 

 LOGAN WALLER PAGE, Director 



Washington, D. C. PROFESSIONAL PAPER November 25, 1916 



THE FLOW OF WATER IN WOOD-STAVE PIPE 



By 



FRED. C. SCOBEY, Irrigation Engineer 

 with discussion by 



GARDNER S. WILLIAMS, THERON A. NOBLE, D. C. HENNY 

 E, A. MORITZ, E. W. SCHODER, L. M. HOSKINS 



CONTENTS 



Introduction 1 



Nomenclature 3 



Formulas for Flow of Water in Wood- 

 Stave Pipe 4 



Trend of Engineering Tliought Regarding 

 the Carrying Capacity of Wood-Stave 

 Pipes 7 



Necessary Field Data for Determination 

 of Retarding Elements of Various 

 Formulas 14 



Equipment and Methods Employed for 

 Collecting and Interpreting Field Data . 16 



Elements of Field Tests to Determine 

 Friction Losses and Comparison of Ob- 

 served Velocities with Velocities Com- 

 puted from Various Formulas .... 26 



Page 



Description of Pipes 40 



A New Set of Formulas for the Flow of 



Water in Wood-Stave Pipe 48 



Comparison of the Various Formulas . . 55 

 Sutter's Formula as Applied to Wood- 

 Stave Pipe 56 



Effect of Age upon the Carrying Capacity 



of Wood-Stave Pipe ....... 58 



Capacity of Wood-Stave Pipes .... 58 



Estimate Diagrams and Table .... 66 



Capacity of Wood-Stave Pipe Compared 



with that of Cast Iron and Riveted Steel 72 



Conclusions 73 



Acknowledgments 74 



Appendix 74 



Discussion 81 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1916 



