CIV E 638 - SEDIMENTATION AND RIVER ENGINEERING
FALL 2022
HOMEWORK No. 5:  MODIFIED EINSTEIN PROCEDURE


Use the Modified Einstein Procedure (onlinemodifiedeinstein.php) to calculate the total sediment load for the following river data.

  • Discharge Q = 500 cfs

  • Mean velocity u = 3 fps

  • Average depth d = 2 ft

  • Width w = 150 ft

  • Water temperature t = 70°C

  • Diameter D65 = 0.001 ft

  • Diameter D35 = 0.0007 ft

  • Measured concentration C = 320 ppm

  • Vertical distance not sampled = 1 ft

  • Mean water level at sampled verticals = 2.2 ft

Use number of size fractions Normal (9).

The fraction of bed material in each size range is: 0.,0.,0.35,0.40,0.15,0.05,0.03,0.02,0.

The percentage of suspended material in each size range is: 23.,27.,40.,10.,0.,0.,0.,0.,0.


(a) Use the USBR (1955) Z' mode of computation.

(b) Use the USBR (1966) Z' mode of computation.