Friday, February 22, 2013  How to estimate earthwork
construction period.  How to estimate the duration required to
complete Earthwork Excavation? Estimation on the numbers of days
required to complete the task by utilisation of machinery does
not required complex calculation. All it take is
simple mathematics and some knowledge on the efficiency of
 machine capability.  Below is an example of the calculation.
1. Quantity of the Earthwork Excavation = 1000 cu.m. 2. The
machinery needed = Excavator and Lorries       Assumption : 1
no. of Excavator and 1 no. of lorry required.                  
     : Excavator need 3 minutes to make a cycle of excavation
works.                         : Excavator Capacity = 1.5 cu.m 
                      : Lorries capacity =  10 ton             
          : Lorry need 5 minutes to make a cycle of
transportation.                         : Specific Gravity of
the earth = 2.7  Base on the assumption, the calculation is as
follows;          a) Duration required to fill a 10 t