estimation prisentetion class project.pptx

etimation

1. R Kabul polytechnic university construction faculty construction Engineering management department QUANTITY ESTIMATION OF BUILDING Supervisor: M.SC. Abdul Tawab “ Alim ” Presenters: faridahmad Khalil & Nasibullha Habibi Id :23MCEM-02-009 & 23MCEM-02-010 Year - 2024

2. R What is Estimation? Essential Qualities of Good Estimator. Types of Estimates. Methods of Detailed Estimates. Description of Measurements for Common Items. Conclusion . References. CONTENT

3. R Estimation Estimation is the scientific way of working out the approximate cost of an engineering project before execution of the work . It is totally different from calculation of the exact cost after completion of the project . Estimation requires a thorough Knowledge of the construction procedures and cost of materials & labour in addition to the skill ,experience , foresight and good judgment For a good estimate the, actual cost of the proposed work after completion should not differ by more then 5 to 10 % from its approximate cost estimate, provided there are no unusual, unforeseen circumstances.

4. R It help to work out the approximate cost of the project in order to decide its feasibility with respect to the cost and to ensure the financial resources , it the proposal is approved. 2. Requirements of controlled materials, such as cement and steel can be estimated for making applications to the controlling authorities. 3. It is used for framing the tenders for the work sand to check contractor’s work during and after the its execution for the purpose of making payments to the contractor . 4. From quantities of different items of work calculated in detailed estimation , resources are allocated to different activities of the project and ultimately their durations and whole planning and scheduling of the project is carried out. NEED FOR ESTIMATE

5. R ESSENTIAL QUALITIES OF A GOOD ESTIMATOR  Note the location of the proposed building .  Get all data available regarding the soil.  Make a sketch of the site showing all important details.  Obtain information concerning light, power, and water.  Secure information concerning banking facilities.  Note conditions of streets leading to railway yards and to material dealers, and  Investigate general efficiency of local workman.

6. R 1.To Explain the process of estimating the building cost for a Building. 2.To prepare a preliminary estimate of the cost of a residential Structure. 3.Generate a final estimate for a simple Structure. 4. To Estimate the quantities of a residential building by using long wall and short wall method . 5. To know the approximate quantities of various material. OBJECTIVIES

7. R Purpose of Estimation

8. R TYPES OF ESTIMATES  There are two main types of estimates :- 1 = Rough cost estimate. 2 = Detailed estimate .  Depending upon the purpose of estimate, some types of detailed estimate are as follows :- a ) Contractor's estimate b ) Engineer's estimate c ) Progress estimate

9. R • Detailed estimates are prepared by carefully and separately calculating in detail the costs of various items of the work. • The mistakes, if any, in the rough cost estimate are eliminated in the detailed estimate. • Detailed estimates are submitted to the competent authorities for obtaining technical sanction. DETAILED ESTIMATE

10. R  The dimensions, length, breadth and height or depth are to be taken out from the working drawings ( plan, elevation and section).  Junctions of walls, corners and the meeting points of walls require special attention.  For symmetrical footings, which is the usual case, earthwork in excavation in foundations, foundation concrete , brickwork in foundation and plinth, and brickwork in superstructure may be estimated by either of the two methods : ( 1) SEPARATE OR INDIVIDUAL WALL METHOD ( 2) CENTER LINE METHOD METHODS OF DETAILED ESTIMATE

11. R • The walls running in one direction are termed as "long walls” and the walls running in the transverse direction, as "Short walls ", without keeping in mind which wall is lesser in length and which wall is greater in length . • Lengths of long walls are measured or found "Out-to out" and those of short walls as " Into- in". • Different quantities are calculated by multiplying the length by the breadth and the height of the wall. SEPARATE OR INDIVIDUAL WALLS METHOD

12. R 1.Site Clearance Works. 2.Excavation for Foundation Trenches. 3.Foundation Concrete. 4.Brick Work in Foundation up to Plinth. 5.Damp Proof Course. 6.Brick Work in Super Structure. 7. Roofing & R.C.C work. 8. Floor. 9.Plastering. DESCRIPTION AND UNITS OF MEASUREMENT FOR COMMON ITEMS

13. R Selected Building for Estimation

14. R Cost and time project estimate is a critical preparation in project management process. Both of top-down and bottom-up approach is useful and applicable in specific situations. Estimation as well as preparation for project, especially mission critical ones, should be done so that it can reduce risks in implementing project, control and assess this implementation process. In this project we have estimated all the major items of works (Earth work excavation, sand filling footings and columns, beams, slab total RCC Quantities and brick work Quantities, plastering, painting, etc.) according to the drawings CONCLUSION

15. R Akshay chaudhary and Payal Sachedeva and Maninderpal Singh; Design and Estimation of a reinforced building: A Case study ISR journal of civil Engineering. Estimation And Costing In Civil Engineering Theory And Practice Including Specifications And Valuations B.N Dutta. Estimating, Costing, Specifications & Valuations in Civil Engineering By Monojit Chakraborti (Book). Estimating in building construction By steven J.Peterson and Frank R.Dagostino . REFERENCES

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