# ESTIMATION OF TWO STOREYED RESIDENTIAL BUILDING

Estimation is the process of finding an estimate, or approximation, which is a value that is usable for some purpose even if input data may be incomplete, uncertain, or unstable. The value is nonetheless usable because it is derived from the best information available.Typically, estimation involves "using the value of a statistic derived from a sample to estimate the value of a corresponding population parameter".The sample provides information that can be projected, through various formal or informal processes, to determine a range most likely to describe the missing information. An estimate that turns out to be incorrect will be an overestimate if the estimate exceeded the actual result,and an underestimate if the estimate fell short of the actual result.

How estimation is done?

Estimation is often done by sampling, which is counting a small number of examples something, and projecting that number onto a larger population.An example of estimation would be determining how many candies of a given size are in a glass jar. Because the distribution of candies inside the jar may vary, the observer can count the number of candies visible through the glass, consider the size of the jar, and presume that a similar distribution can be found in the parts that can not be seen, thereby making an estimate of the total number of candies that could be in the jar if that presumption were true. Estimates can similarly be generated by projecting results from polls or surveys onto the entire population.

Uses of estimation

In mathematics, approximation describes the process of finding estimates in the form of upper or lower bounds for a quantity that cannot readily be evaluated precisely, and approximation theory deals with finding simpler functions that are close to some complicated function and that can provide useful estimates. In statistics, an estimator is the formal name for the rule by which an estimate is calculated from data, and estimation theory deals with finding estimates with good properties. This process is used in signal processing, for approximating an unobserved signal on the basis of an observed signal containing noise. For estimation of yet-to-be observed quantities, forecasting and prediction are applied. A Fermi problem, in physics, is one concerning estimation in problems which typically involve making justified guesses about quantities that seem impossible to compute given limited available information.
 Sl. No Description No Dimension Remark L (m) B (m) D (m) Qty. 1. Earth work Excavation a) Footing 17 2.20 2.20 2.00 164.56 b) Plinth Beam i) Wall allround 1 22.68 0.23 0.40 2.086 c/w b/w ii) M. Bed & Drawing 1 1.80 0.23 0.40 0.165 iii) Kitchen & Drawing 1 2.52 0.23 0.40 0.232 iv) M.Bed & Toilet 1 2.67 0.23 0.40 0.246 v) Toilet & Kitchen 1 2.07 0.23 0.40 0.191 vi) Drawing & Bed 1 2.06 0.23 0.40 0.189 vii) Drawing & Study 1 1.76 0.23 0.40 0.162 viii) Toilet 1 6.10 0.45 0.45 1.235 169.066m3 2. River Sand Filling a) Footing 17 2.20 2.20 0.10 8.228 b) Plinth beam i) Wall allround 1 50.26 0.23 0.05 0.578 8.806m3 3. P.C.C. 1:4:8 a) Footing 17 2.20 2.20 0.15 12.342m3 4 Random Rubble Masnory Wall allround 50.26 0.3 0.3 4.52 Toilet 6.17 0.3 0.3 0.55 5.07m3 5 R.C.C. 1:2:4 a) Footing i) at Rectangular portion 17 2.2 2.2 0.1 8.228 ii) above Rectangular portion upto column junction 17 2.4 46 0.55 22.870 iii) Column (Upto plinth level) 17 0.23 0.23 1.35 1.215 iv) Upto I floor 17 0.23 0.23 3 2.698 v) Upto I to II floor 12 0.23 0.23 3 1.904 36.195m3 6. Plinth Beam i) Wall alround 17 50.26 0.23 0.30 58.467 ii) M.bed & Drawing 3.96 0.23 0.30 0.273 iii) Kitchen & Drawing 4.72 0.23 0.30 0.325 iv)  M.bed & Toilet 4.87 0.23 0.30 0.336 v) Toilet & Kitchen 4.27 0.23 0.30 0.294 vi) Drawing & Bed 4.26 0.23 0.30 0.294 vii) Drawing & Study 3.96 0.23 0.30 0.273 viii) Toilet 6.10 0.23 0.30 0.420 60.682m3 7. Lintel @ I floor i) Wall alround 17 50.26 0.23 0.15 29.47 ii) M.bed & Drawing 3.96 0.23 0.15 0.136 iii) Kitchen & Drawing 4.72 0.23 0.15 0.163 iv)  M.bed & Toilet 4.87 0.23 0.15 0.168 v) Toilet & Kitchen 4.27 0.23 0.15 0.147 vi) Drawing & Bed 4.26 0.23 0.15 0.147 vii) Drawing & Study 3.96 0.23 0.15 0.136 viii) Toilet 6.10 0.23 0.15 0.210 30.577m3 8. Lintel @ IInd floor i) Wall allround 1 49.06 0.23 0.15 1.673 ii) Drawing & Bed 1 3.96 0.23 0.15 0.137 iii) Bed & Drawing 1 4.72 0.23 0.15 0.163 5.53m3 9. Sunshade i) Wall allround I floor 1 46.85 0.45 0.087 1.834 ii) Wall allround II floor 1 43.59 0.45 0.087 1.706 10 Roof Slab @ I floor with 1:1½:3 i) Kitchen 1x1 4.73 5.18 0.12 2.940 ii) Toilet &Bath 1x1 4.23 1.52 0.12 0.772 iii) Master bed 1x1 5.32 4.42 0.12 2.827 iv) Drawing 1x1 6.10 10.67 0.12 7.810 v) Bed Room 1x1 4.42 4.72 0.12 2.503 vi) Study 1x1 4.19 4.19 0.12 2.107 vii) Toilet 1x1 1.75 3.13 0.12 0.657 19.63m3 Deduction Opening area 1x1 7.93 4.10 0.12 (-) 3.902 Stair Case 1x1 1.00 6.10 0.12 (-) 0.732 Stair Case 1x1 1.20 1.00 0.12 (-) 0.288 (-) 4.922m3 11. Second Floor Room 1x1 4.73 5.18 0.12 2.940 Hall 1x1 6.10 10.67 0.12 7.810 Bed 1x1 4.19 4.19 0.12 2.107 Toilet I 1x1 1.75 3.13 0.12 0.657 Toilet II 1x1 4.23 1.52 0.12 0.772 14.286m3 12. Beam Ist Floor Front Side Kitchen 1x2 4.27 0.23 0.45 0884 Rear Side Kitchen 1x2 4.72 0.23 0.45 0.977 Master bed room 1x2 4.87 0.23 0.45 1.008 Master bed room 1x2 3.96 0.23 0.45 0.820 Toilet 1x2 1.52 0.23 0.45 0.315 Drawing 1x2 6.10 0.23 0.45 1.263 Bed Front Side 1x2 3.96 0.23 0.45 0.820 Bed Read Side 1x2 4.26 0.23 0.45 0.882 Study & Bed 1x2 3.96 0.23 0.45 0.820 Game area 1x3 1.98 0.23 0.45 0.615 Curved Beam 1x1 3.11 0.20 0.45 0.322 8.726m3 13. Stair Case Beam 1x1 4.32 0.30 0.45 0.583 Beam 1x2 8.43 0.30 0.45 0.656 Beam 1x2 1.70 0.30 0.45 0.459 Steps 1x20 1.80 0.30 0.07 0.756 Waist Slab 1x1 6.56 1.00 0.15 0.984 3.438m3

 14. I Class Brick work in C.M. 1:4 Ist Floor Front Side Kitchen 1x2 4.27 0.23 2.40 4.714 Rear Side 1x2 4.72 0.23 2.40 5.211 Master bed room 1x2 4.87 0.23 2.40 5.376 Master rear side 1x2 3.96 0.23 2.40 4.372 Toilet 1x2 1.52 0.23 2.40 1.678 Drawing 1x2 6.10 0.23 2.40 6.734 Bed front side 1x2 3.96 0.23 2.40 4.372 Bed rear side 1x2 4.26 0.23 2.40 4.703 Study & bed 1x2 3.96 0.23 2.40 4.372 Game area 1x2 1.98 0.23 2.40 3.278 Curved 1x2 3.11 0.23 2.40 1.717 46.527m3 IInd Floor Toilet 1x2 3.77 0.23 2.40 4.162 Toilet rear side 1x2 1.52 0.23 2.40 1.678 Bed room 1x2 4.87 0.23 2.40 5.376 Bed rear side 1x2 4.72 0.23 2.40 5.211 Bed room 1x2 3.96 0.23 2.40 8.744 Drawing 1x2 6.10 0.23 2.40 6.734 Drawing rear side 1x2 10.67 0.23 2.40 23.560 Toilet 1x2 1.52 0.23 2.40 1.678 Toilet rear side 1x2 2.67 0.23 2.40 2.947 60.09m3 Parapet B.W in Ist Floor 1 19.17 0.115 1.00 2.20 B.W. in IInd Floor 1 51.8 0.115 1.00 5.96 8.16m3 Deduction Door (D1) 1 1.2 0.23 2.10 0.579 Door (D2) 8 1.0 0.23 2.10 3.864 Door (D3) 5 0.9 0.23 2.10 2.174 Window (W1) 12 1.5 0.23 1.5 6.210 Arc Window (W2) 2 2.0 0.23 2.00 1.840 Ventilator 3 0.6 0.23 0.60 0.248 14.915m3 15. Celling Plastering C.M. 1:3 Ist Floor Kitchen 4.27 4.72 - 20.15 M.Bed 4.87 3.96 - 19.28 Toilet 3.77 1.52 - 5.73 Study & bed 3.96 3.96 - 15.68 Bed 3.96 4.26 - 16.86 Toilet 1.52 2.67 - 4.06

 Drawing (Front) 1 6.1 2.4 - 14.64 Drawing (Side) 2 6.07 1.0 - 12.11 108.51m2 IInd Floor Bed Room 1 4.27 4.72 - 20.15 Bed Room 1 3.96 3.96 - 15.68 Toilet 1 3.77 1.52 - 5.73 Toilet 1 1.52 2.67 - 4.06 Drawing 1 6.1 10.67 - 65.09 110.71m2 Wall Plastering Outer Wall allround 1 53.48 - 3.0 160.44 Kitchen 2 17.98 - 3.0 107.78 M.Bed 1 17.66 - 3.0 52.98 Toilet 2 10.52 - 3.0 63.48 Drawing 2 33.54 - 3.0 201.24 Bed 1 16.44 - 3.0 49.32 Study & Bed 2 15.84 - 3.0 95.04 Toilet 2 8.38 - 3.0 50.28 780.56m2 Parapet Plastering B.W in Ist Floor 1 19.17 - 2.115 40.54 B.W. in IInd Floor 1 51.8 - 2.115 109.55 150.09m2 Deduction Door (D1) 1x2 1.2 - 2.1 5.04 Door (D2) 1x8 1.0 - 2.10 16.80 Door (D3) 1x5 0.9 - 2.10 9.45 Window (W1) 1x12 1.5 - 1.5 27.00 Arc Window (W2) 1x2 2.0 - 2.0 8.00 Ventilator 1x3 0.6 - 0.6 1.08 67.37m2

1.     Earthwork excavation                       -        169.066 m3
2.     Qty. of River Sand                            -        8806 m3
3.     Qty. of P.C.C 1:4:8                           -        12.342 m3
4.     Qty. of Randam Rubble Masnory     -        5.07 m3
5.     Qty. of R.C.C. 1:2:4                          -        174.848 m3
6.     B.W. in C.M. 1:4                              -        99.86 m3
7.     Plastering                                          -        1082.5   m2
8.     White washing                                  -        108.5 m2

Abstract Estimate

 S. No. Description Units Qty. Rate Amount 1. Earthwork excavation m3 168.066 510.00 86223.66 2. River Sand m3 8.806 245.00 2157.47 3. P.C.C 1:4:8 m3 12.342 3535.00 43628.97 4. Randam Rubble Masnory m3 5.07 2657.00 13470.99 5. R.C.C. 1:2:4 m3 174.848 4090.00 715128.32 6. B.W. in C.M. 1:4 m3 99.86 11570.00 1055520.80 7. Plastering m2 1082.5 360.00 389700.00 8. White washing m2 1082.5 55.00 59537.50 2755064.65

Total Cost                      =       Rs.2755064.65
Add 5% contingencies   =       5/100 x 2755064.65
=       Rs. 137753.2325
Total amount                 =       Rs. 2893817.88

Say Rs. 3000000/-