Engineering Economics
Which method is adopted to develop an approximate or conceptual estimate for perimeter works for buildings from the following?

Cost per linear metre method
Base unit method
Cost per function method
Cost per square metre method

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Engineering Economics
In a cash flow series:

Uniform gradient signifies that an income or disbursement changes by the same amount in each interest period
The gradient in the cash flow may be positive or negative
All of these
Either an increase or decrease in the amount of a cash flow is called the gradient

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