In which of the following types of estimates for buildings will the running meter cost of walls be required? 

Explanation:

• In the Approximate quantity method, the cost estimation is based on the approximate quantities of materials (like walls, floors, etc.) required for the construction.
• In this method, the running meter cost of walls is important because the quantities are calculated based on measurements, such as the length of walls, and the cost is determined per meter.

Additional Information

Plinth Area method:

• In the Plinth Area method, the cost estimate is based on the plinth area (the floor area at the ground level) of the building.
• This method doesn't specifically require the running meter cost of walls; instead, it uses a general cost per square meter of the plinth area.

Cubical method:

• The Cubical method calculates the cost based on the volume of the building (length × breadth × height).
• While the wall volume might be considered in the total volume, it doesn’t require the running meter cost of walls.

Linear method:

• The Linear method is based on the length of walls, where the cost is calculated per meter of the wall length.
• This method directly requires the running meter cost of walls for accurate estimation, as it involves measuring the length of walls to determine material quantities and cost.