CALCULATING A 'COHESION VALUE'
Numerical Equivalents of Cohesion Strength
Numerical equivalents may be assigned to cohesion strength:
- high cohesion:
(H) = 7.00
- intermediate cohesion:
(I) = 3.00
- low cohesion:
(L) = 0.00
- Note that these values are expressed to TWO decimal places.
To determine Cohesion Values for the NYC rocks and sediments, follow these steps (see example):
- Print out a copy of the 'Cohesion Value Calculation Table', (printout # Q-5).
- For each rock or sediment, indicate its particle relationship and cohesion strength by a check mark. (Obtain this information from your Cohesion Strength Answer Form (printout # Q-8.)
- Enter the numerical equivalent of the cohesion strength (see list above).
- Enter the Cohesion Value (which is numerically equal to the cohesion strength).
- Click on the grey bar marked 'Cohesion Value Checking Table' to see if your Cohesion Values are correct.
- Record all eight Cohesion Values in column (c) of the Erosion-Resistance Index Calculation Table (printout #Q-6).
Printout # Q-5