Caterpillar Performance Handbook, January 2017, SEBD0351-47

Trenching Production

Hydraulic Excavators

7) Estimate cycle time (23 sec) based on anticipated conditions and enter on scale H. 8) Estimate hourly digging time (27 min) and enter on scale I. 9) Connect H through I to scale J for cycles per hour.

(get loose volume from scale E and enter on this page scale E) 5) Enter required linear production rate 9 m/h (30 t/hr) on scale G. 6) Connect E and G. Transfer hourly production rate from scale F to scale K (next page).

E LOOSE VOLUME

F HOURLY PRODUCTION

G LINEAR PRODUCTION

H CYCLETIME

I DIGGING TIME/HR.

J CYCLES PER HOUR

100’s of min Sec

Cycles/hr

LCM/m LCY/ft

m/h

ft/hr

LCM/m LCY/ft

7

% of Hour %

Digging time/hr min

Edition 47 7-259