* Troughed belt load areas & capacity for conveyor (Refer to “Belt Conveyors for Bulk Materials”:CEMA) 1. Troughed belt load areas • Traperzoidal area Ab = {0.371b+0.25+(0.2595b-1.025) cos𝛽} × {(0.2595b-1.025) sin𝛽} = ( ) (in^2) - b = width of belt (inches) - 𝛽= angle of idler roll (° degrees) or Ab = {0.371×b/1000+0.00635+(0.2595×b/1000-0.026035)×cos𝛽} × {(0.2595×b/1000-0.026035)×sin𝛽} = ( ) (m..
