Moduel 13-16 Flashcards
List three types of equipment that could be used for most excavation applications for building construction, municipal construction and environmental remediation work.
Excavator, Backhoe, Bulldozer Front End Loader Skid Steer Loader/Bobcat
What is the term used to describe the amount of work that a piece of equipment can accomplish in an hour, under average operating conditions?
Productivity rate
If excavation quantities are computed in cubic metres and the available published cost data is listed in dollars per cubic yard, which value in the equation would be converted before calculating the total cost?
It could be either- volume or unit cost
What factors must be considered in determining a cycle time for trucks hauling excavated material from the site?
Fill time, Travel time, Dump/disposal time and Return time
How would you determine the optimum number of trucks required to remove excavated material from a site without causing waiting time for the excavator?
Divide the cycle time by the fill time
Will adding more trucks decrease the duration of the excavation?
No, the productivity rate of the excavator determines the duration of the excavation operation. Adding additional trucks will not change the fill time or the cycle time, but will increase the waiting time
Will using an excavator with a greater capacity decrease the duration of the excavation
Most likely yes, because each “bite” would be bigger and that would reduce the fill time, which in turn would reduce the cycle time.
What unit costs would apply to a fill delivery operation?
Material: for the granular material Labour: for the equipment operators and any related labourers Equipment: for the cost of the necessary pieces of equipment
Which types of equipment would most likely be required for an excavation operation where the material is stored on site but removed from the actual excavation?
An excavator to dig the hole; A front end loader to move material or A dozer to move material
How is aggregate material priced?
By the metric tonne, or by the cubic metre
What is the term used to describe costs that are associated with the physical parts of the project work?
Direct Costs
What are the two main components of unit costs?
Labour
Material
The allowance for waste generally ranges between what two percentages?
5 & 10%
Name the two methods or formats for recording cost data.
Two-page estimate
Consolidated estimate
How many digits are used for a R.S. Means line number?
12
Describe a composite crew.
List of individual workers & equipment required for a specific task or work item