shown in a schedule should
interval, such as a day, a week,
be some convenient
or a month.
In the late 1950s, a new system of project
planning, scheduling, and control came into
widespread use in the construction industry. The
critical path analysis (CPA), critical path method
(CPM), and project evaluation and review technique
(PERT) are three examples of about 50 different
approaches. The basis for each of these approaches is
the analysis of a network of events and activities. The
generic title of the various networks is network
The network analysis approach is now the
accepted method of construction planning in many
organizations. Network analysis forms the core of
project planning and control systems and is
accomplished by completing the following steps:
1. Develop construction activities. After careful
review of the plans and specifications (specs), your first
step is to break the job down into discreet activities.
Construction activities are generally less than 15 days
in duration and require the same resources throughout
the entire duration.
2. Estimate construction activity requirements.
Evaluate the resource requirements for each
construction activity. Identify and list all of the
materials, tools, equipment (including safety-related
items), and manpower requirements on the
Construction Activity Summary (CASS) Sheet.
3. Develop logic network. List the construction
activities logical] y from the first activity to the last,
showing relationships or dependencies between
4. Schedule construction activities. Determine
an estimated start and finish date for each activity based
on the sequence and durations of construction activities.
Identify the critical path. This will help focus attention
of management on those activities that cannot be
delayed without delaying the project completion date.
5. Track resources. As the crew leader, you must
be sure the necessary resources are available on the
project site on the day the work is to be performed. For
materials on site, this will be as easy as submitting a
material request, NAVSUP Form 1250-1, to the
material liaison office (MLO) several days in advance.
For local purchase requirements, such as a concrete
request to MLO, a request can be required 2 to 3 weeks
6. Control resources. As the crew leader, you are
also responsible for on-site supervision of all work
performed. Productive employment of available
resources to accomplish assigned tasking is your
Progress control is the comparing of actual
progress with scheduled progress and the steps
necessary to correct deficiencies or to balance
activities to meet overall objectives.
In planning any project, you must be familiar with
construction drawings and specifications. The
construction of any structure or facility is described
by a set of related drawings that gives the Seabees a
complete sequential graphic description of each phase
of the construction process. In most cases, a set of
drawings shows the location of the project,
boundaries, contours, and outstanding physical
features of the construction site and its adjoining
areas. Succeeding drawings give further graphic and
printed instructions for each phase of construction.
TYPES OF CONSTRUCTION
Drawings are generally categorized according to
their intended purposes. Some of the types commonly
used in military construction are discussed in this
Master Plan Drawings
MASTER PLAN DRAWINGS are commonly
used in the architectural, topographical, and
construction fields. The y show sufficient features to
be used as guides in long-range area development.
They usually contain section boundary lines,
horizontal and vertical control data, acreage, locations
and descriptions of existing and proposed structures,
existing and proposed surfaced and unsurfaced roads
and sidewalks, streams, right-of-way, existing
utilities, north point indicator (arrow), contour lines,
and profiles. Master plan and general development
drawings on existing and proposed Navy installations
are maintained and constantly upgraded by the