Experimental studies were performed on 24-in. and 36-in. concrete culvert pipe to determine the effect of interior surface finishes and joint irregularities on the frictional resistance of the pipe. Cast and vibrated pipe and machine-tamped pipe were used in the tests. The studies are grouped
into several more or less related categories.
The State Road Department of Florida; The Bureau of Public Roads
Straub, Lorenz G.; Bowers, Charles A.; Pilch, Meir.
Resistance to Flow in Two Types of Concrete Pipe.
St. Anthony Falls Hydraulic Laboratory.
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