Screen capacity is determined by the amount of aggregate the smallest size screen will pass.

Figure 23 illustrates the relationship between screen openings and aggregate processing rates for

the screen which feeds Bin #1. Total screen capacity is then found by applying the following

formula:

Example: Aggregate blend, Figure 20. Bins and fines feeder separations-given in Step 2 (Screen

Selection) and in Figure 20. From Figure 20, the 5/324nch screen is the smallest to

be used. Figure 23 reveals a passing rate of 70 TPH. The amount of aggregate fed to

Bin #1 is 47%. Thus: