Estimating And Costing Basic

Compute a rough cost estimate from plan theory by calculating total external length and breadth, plan area, unit rate, water and electricity charges, lump-sum costs, and contingencies.

Compute a cubical content estimate for a g+2 building: 600 m² area, 3 m height, 5400 m³ total, plus water 8%, electricity 7%, contingency 2%, and contractor profit 10%.

Identify unit rate as the cost per unit and compute total cost by multiplying total number of units by the unit cost, as shown with 60 at $500 each.

Learn how item rate estimates are built by calculating item-by-item quantities, assembling abstract of quantities and a detailed measurement form, and applying revised, supplementary, and repair and maintenance estimates.

Develop an Excel measurement and costing sheet to calculate project quantities, including serial numbers, descriptions, length, breadth, and depth. Use a total quantity formula for excavation and foundation work.

Learn estimate methods: the long and short wall method and center line method, distinguishing external and internal wall dimensions and computing quantities from center line length times breadth and depth.

Learn to estimate excavation and PCC for foundation by reading plan and sections, determining length, breadth, and depth, and preparing abstract of cost.

Compute brick works from foundation to plant level, including DPC, brick walls in foundation and superstructure, plaster works, and excavation, and assemble a comprehensive cost abstract for all items.

Create an abstract of cost from the abstract of quantity for six items, assign units, input rates from schedule of rate, and calculate the total amount.

Estimate cement, sand, and coarse aggregates for a 10 cubic meter concrete mix using a 1:4:2 ratio with a 1.54 dry volume factor, and convert cement to bags.

Estimate cement and sand in plaster from area and thickness, convert wet volume to dry volume using plaster ratio and volume factors, and determine cement bags required.

Calculate bricks for 10 m3 at 500 per m3 (5000 bricks); determine cement and sand with a 1:6 cement-mortar ratio, and convert cement to bags (0.035 m3 per bag).

Learn to build a material statement in Excel by calculating cement, sand, and bricks from given ratios, converting dry volume to bags, and detailing quantities for foundation and brickwork.

Learn to create a material statement by converting square meters to cubic meters with thickness, calculate plaster and concrete volumes, and estimate cement and sand bags using ratios in Excel.