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In the case of preliminary estimate prepared per unit basis, the service units to be considered for a school and hospital are respectively ___________.
bench and bed
bench and ward
classroom and bed
classroom and ward
classroom and bed
Preliminary estimates are prepared using the unit rate method, where the total cost is calculated by multiplying the number of service units by the unit cost. For a school, the service unit is the 'classroom', and for a hospital, it is the 'bed' capacity.
CPWD Manual on Estimation and Costing
Preliminary estimates are prepared using the unit rate method, where the total cost is calculated by multiplying the number of service units by the unit cost. For a school, the service unit is the 'classroom', and for a hospital, it is the 'bed' capacity.
Total┬аCost=Number┬аof┬аUnits├ЧRate┬аper┬аUnit
This method relies on historical cost data per unit. By dividing the total project requirements into quantifiable standard functional units, engineers can perform a quick assessment of capital expenditure before detailed designs are finalized.
Unit rate estimates are used for quick budgetary approvals.
The accuracy of this method depends on the reliability of the cost per unit data obtained from similar previous projects.
A school's capacity is effectively measured by the number of students it can accommodate, which is proportional to classrooms.
A hospital's infrastructure demand is directly linked to patient capacity, measured in beds.
Rapid preparation of estimates.
Useful for comparing different design alternatives at the feasibility stage.
Lower accuracy compared to detailed estimates.
Does not account for variations in specifications or local site conditions effectively.
Feasibility studies for public buildings.
Budget allocation for educational and healthcare institutions.
The selection of the unit depends on the primary function of the building type.
Option A and B are incorrect because 'bench' and 'ward' are not standard metrics for cost estimation in these specific contexts.
C is correct тАФ The service units for a school and a hospital are defined as a classroom and a bed, respectively.
When asked for unit metrics in exams, focus on the 'functional capacity' of the building; always link the building type to its primary utility, like school to classroom and hospital to bed.
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