APPROXIMATE ESTIMATION AND COST ANALYSIS

RESIDENTIAL TOWER

DATE: 01/05/2018

Data given for analysis:  

·         RCC frame structure

·         Raft UG Tank

·         Two level basement

·         Ground + 22 floors residential tower

·         Per floor plate area is 500 sq mtr

·         23^rd is terrace floor

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 SOLUTION:

Construction Area Estimation: 500 sqmtr x 25 floor = 12500 sqmtr (approx.)

                                                      i.e.:  12500 sqmtr x 10.76 = 134500 sq ft. (approx.)

Cost analysis:

1.       CONCRETE: (assume 2.5 per sqft)

Total Quantity = 134500 x 2.5 = 336250 cubic ft = 9525 cubic mtr.

Total Cost = 9525 x 8000 rs. = Rs. 7,62,00,000/-

2.       STEEL: (assume 6.5kg per sqft)

Total Quantity = 134500 x 6.5 = 874250 kg = 874.3 tonne.

Total Cost = 874.3 x 60000 rs. = Rs. 5,24,58,000/-

3.       BLOCK MASONRY, PLASTER AND WATERPROOFING: (assume 450 Rs. per sq ft)

Total Cost = 134500 x 450 rs. = Rs. 6,05,25,000/-

4.       EXCAVATION AND OTHER MISCILLENIOUS ACTIVITY: (assume 200 Rs. per sq ft)

Total Cost = 134500 x 200 rs. = Rs. 2,69,00,000/-

5.       LABOUR COST: (assume 400 Rs. per sq ft)

Total Cost = 134500 x 400 rs. = Rs. 5,38,00,000/-

6.       INTERIOR COST: (assume 800 Rs. per sq ft)

Total Cost = 134500 x 800 rs. = Rs. 10,76,00,000/-

7.       PASSENGER LIFT: (assume 150 Rs. per sq ft)

Total Cost = 134500 x 150 rs. = Rs. 2,01,75,000/- 

8.       FIRE FIGHTING SYSTEM: ( assume 100 Rs. per sq ft)

Total Cost = 134500 x 100 rs. = Rs. 1,34,50,000/-

                               TOTAL COST = Rs. 41,11,08,000/-

                               

                                  RATE PER SQ FT = 3057 Rs. per sq ft.

MATERIAL AND CONSTRUCTION METHOD SPECIFICATION

1.       CONCRETE:

·         The grade of concrete should be between M25 to M40 grade.

·         Consider both RMC as well as site mix method for pouring.

2.       STEEL:

·         FE500 grade of steel can be use.

·         Higher diameter of steel should be 36mm.

3.       BLOCK MASONARY, PLASTER AND WATERPROOFING WORK:

·         For masonry work consider light weight blocks of 100mm to 150mm width.

·         Apply sand face plastering on both external and internal face of wall.

·         All wet areas are consider for waterproofing work which includes bath, wc, kitchen sunk, balcony, chajja.

·         UG water tank and OH water tank is also include in waterproofing activity.

·         Compound wall, storm water channel and ground surface treatment is included in masonry work.

4.       EXCAVATION AND OTHER MISCELLANEOUS ACTIVITY:

·         Excavation from ground level to required final foundation level using machine or manual as require on site conditions.

·         Pile breaking work.

·         Anchoring shore pile.

·         The surface below raft foundation should be treat with proper waterproofing material such as Shahabad ladi or any geotextile material.

·         Walls of lower and upper basement should be waterproof.

5.       LABOUR WORK:

·         Commercial plywood shuttering is considered for concreting work.

QUANTITY ESTIMATION OF PAINTING WORK

HOW TO CALCULATE QUANTITY OF PAINT FOR BUILDING:

Painting is one of the most essential steps to be done after construction of any building/house.
Painting is done to protect the surface of the walls as well as to increase appearance.

                                                  

In this article, I will discuss how to calculate the quantity of paint required in a building.

Before starting the calculation let me tell you one important thing that quantity of paint is calculated in gallon.

There are two types of gallon

                                                                                                               

US gallon and Uk gallon.

1 US gallon = 3.785 litres

1 Uk gallon = 4.546 litres.

In this calculation we will use US gallon.

Let the length of the wall = 15 feet

The height of the wall = 12 feet.                                 

Area of the wall 15 x 12 = 180 sft.

THUMB RULE FOR PAINT CALCULATION:

Generally, 1 gallon of paint can cover up to 350 sft area of wet wall and

1 gallon of paint can cover up to 200 sft area of dry wall.

                             

PAINT QUANTITY OF WET WALL:

Area of wet wall =180 sft

Paint covered area = 300 sft

Quantity of paint = 180/350 = 0.514 litre.

Let the price of 1 gallon paint = Rs 1200.

Price of 0.514 gallon paint = 0.514 x 1200 =  617 Rs.

PAINT QUANTITY OF DRY WALL:

Area of dry wall = 180 sft.

Paint covered area = 200

Quantity of paint = 180/200 =0.9 gallon.

Price of 0.9 gallon paint = 0.9 x 1200 = 1080 Rs.

Note:

1. If the wall has any openings, subtract the area of openings from total area & then calculate paint quantity.

APPROXIMATE ESTIMATION

ESTIMATING QUANTITIES

PROJECT : RESIDENTIAL BUILDING    

BUILT-UP AREA : 100000 sq ft   

1) CONCRETE: 

    Concrete = 1.5 to 2 cubic ft per sq ft of built up area.

                This quantity would increase slightly for a building having basements as extra concrete would go in the raft, retaining walls and to the ramps to basement.

Example: Consider concrete = 1.5 cubic ft per sq ft.

                                              = 1.5 x 100000

                                              = 150000 cubic ft

                                which is = 4248 cubic mt of concrete.

2) STEEL:  

     Steel = 5 to 6 kg per sq ft of built up area.

                      High rise buildings require more steel in the columns and amount of steel per sq ft built up area would increase with the height of the building.

Example: Consider steel = 5 kg per sq ft

                                        = 5 x 100000

                                        = 500000 kg

                          which is equal to 500 ton of steel.

    

   

                                                                
                                                                       

3) BRICKWORK:

                Brickwork = 1.3 times the built up area.

                        However, the total area of the walls would depend a lot on the size of rooms.

Example: Brickwork area = 1.3 x 100000 

                                         = 130000 sq ft

4) PLASTERING WORK:

                  Plastering work = 2.5 to 3 times of the brick work area.

  

                         Note that this also includes ceiling & staircase plastering.

Example: Consider plastering area = 3 x 130000 sq ft

                                                        = 390000 sq ft