Civil Engineering Reference
In-Depth Information
Resource loading
, along with the “Resource Dictionary,”
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will result in cost load-
ing to each activity but in a smarter way than just assigning cost figures. Let's compare
the cost of an Excavation activity with 12 days' duration, assigned in two different
ways:
a.
A cost number of $19,152
b.
One Equipment Operator, one Laborer, and one Hydraulic Excavator
From the Resource Dictionary we find the unit cost for these resources:
Equipment Operator @ $45/hour
Laborer @ $32/hour
Hydraulic Excavator @ $980/day
So, the total cost for Excavation = 12 days ∗[8 hours∕day ∗(45 + 32)+980]=
$19
152.
Assigning a budget by assigning resources to activities (method “b”) has many
advantages, such as:
,
•
Ease of changing/updating the cost of an activity and the project when the unit
price of a resource changes, especially when multiple activities use that resource
•
Ability to integrate with accounting and procurement
•
Ability to estimate and store (in a database) productivities and man-hours and
to do a cost analysis
•
Ability to do resource leveling and to set upper
limits on resource
consumption
•
Ability to use “resource-driven” activities (i.e., allow the computer program to
assign the maximum available resource amount to an activity, thus controlling
its duration and timing within its float)
10. Resource leveling
This topic is discussed in detail in Chapter 6.
Resource leveling
is simply the attempt
to maintain the uniform daily use of a resource (or resources) for the entire life cycle
of the project or for the longest continuous segment of it. The objective of this step
is to improve the efficiency of resource utilization (particularly labor and equipment)
during the life cycle of the project.
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Resource Dictionary in Oracle Primavera P3 or P6 is a small database, at the level of the project, containing
information on all resources such as cost and availability. It can—and usually is—exported from one (existing)
project to another (new) one.
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