A masonry contractor has bid $272,000 for her portion of a project you are managing. The project begins on April 11,
2011. The duration of the masonry tasks: 50 days. 1) Assuming the contractor’s crews completed all work that was
scheduled by April 29, 2011, how much money will the owner pay for masonry work when the monthly draw check is
drafted for masonry? 2) How much will the May 2011 monthly draw total? (May 30 is Memorial Day and thus a non-
work day). Linear Productivity and EV Contract $272,000; Duration 50 days; EV per day = $272,000 / 50 = $5,440.
= # workdays X EV per day (15 X $5,440 =
= # workdays X EV
per day (21 X $5,440 =
Remember, our assumptions are: Linear – 1. productivity 2. EV.
One (1) day after that, start installing forms (SS with 1 day lag).
You must wait 1 day after finishing ex-
cavating before you can finish installing the forms (FF with 1 day lag),
or said another way
, you cannot finish the
forms until 1 day after the excavation has been finished.
Resources: Stuff That Costs $ to purchase, rent, or use
(Labor, Materials, Equipment). Labor: Salaried (generally an overhead cost), Costs the same regardless of outputs.
Accountants, Office Engineers, Estimators, Project Manager, Superintendant, Secretary, etc. Hourly (generally a dir-
ect cost), Cost is directly related to the time worked. Carpenter, Sheet Metal, Mason, Electrician, Foremen, Tile Set-
ter, Carpet Installer, etc. Equipment & materials: Construction Equipment & Mtls; Installed Equipment & Mtls. Con-
struction Equipment (Forklift, Crane, Backhoe,Ventilation Fans, Temporary Generators); Construction Materials
(Ladders, Scaffolding, Forms)
Both are needed to build the project, but do not
become a part of the project.
Equipment (HVAC Equipment, Electrical Components, Elevators, Permanent Generators); Installed Materials (Win-
Both are needed to build the project, and they do
become a part of the
For Estimates: Equipment is mostly construction equip. / Materials are mostly installed components. Re-
source Allocation: the assignment of the required resources to each activity, in the required amount and timing. Is
also called resource loading. When resources are limited
they must be assigned (allocated) in an efficient manner. If
resources are unlimited
, allocation is unimportant. Resource Leveling: minimizing the fluctuations in day-to-day re-
source use through the project. Attempts to make even use of resources on a daily basis. Why do it? Minimize cost
without delaying the project. Goal is to better utilize: personnel / large need to level, equipment / may or may need to
be leveled, materials / will not usually need leveling. Benefits of Leveling Personnel: Balances manpower require-
ments, Less need to find additional workers, Less need to layoff unused workers, Improves morale, Lower direct and
indirect costs. Leveling Ideas: Work within the float of non-critical activities to allocate resources to activities on the