transportation difficulties and also allows the fine aggregates to reach a fairly stable and uniform moisture content
and bulking factor. Large stockpiles are usually rectangular for ease in computing volumes. They are flat on top
to retain gradation uniformity and to avoid segregation caused by dumping aggregate so that it runs down a long
slope. Be sure to maintain enough cement at the cement batching plant. The amount of concrete required by the
project and the placement rate determine the size of the stockpiles. If you will use admixtures, make sure that
enough are on hand.
Lumber at Construction Sites
Stockpile plenty of formwork and scaffolding materials at the construction site. The size and quantity of lumber
you store depends on the type of forms and scaffolding you plan to use.
Batching Plants
The initial location of the aggregate, cement, and water; the aggregate quality; and the location of the work can all
affect where you position the cement batching plant. Depending on these conditions, you can operate the cement
batching plant at the same place as the aggregate batching plant or closer to the mixer. After developing a layout,
position the batching plant within crane reach of the aggregate stockpiles and astride the batch truck routes.
Although the crushing and screening plant is normally located at the pit, it can be operated at the batching plant or
at a separate location. If the road is good, a hillside location permits gravity handling of materials without
excessive new construction and may eliminate the need for cranes or conveyors.
Safety Facilities
Plan, and in some cases construct, the safety facilities during site preparation. They include overhead canopies
and guardrails both to protect personnel from falling debris and to prevent anyone from falling into open
excavations. Certain sites, such as those where landslides may occur, require additional safety facilities.
PART B - PLAN FORMWORK USED IN CONSTRUCTION PROJECTS
MANAGEMENT ASPECTS
To perform a proper analysis, you must have a working knowledge of the equipment necessary for the formwork
job and a good idea of how much work the form builders can turn out per unit of time.
EQUIPMENT
The average formwork job requires claw hammers, pinchbars, handsaws, a table saw, levels, plumb lines, and
carpenter's squares. Make sure these tools are readily available.
TECHNIQUES
Develop standardized methods for constructing, erecting, and stripping forms to the maximum extent possible.
This saves time and material and simplifies design problems.
4-3
EN5466
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