# @ETCONp Construction Exam 8 .DOCX

16. Mar 2023
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### @ETCONp Construction Exam 8 .DOCX

• 1. Exam forEng III 1. Suppose instructed to prepare rate for C-25 concrete with ratio of 1:2:3. Having the following data (30 Points) Material Cost at Site Cement Cost= 300birr/Qtl Gravel=200birr/m3 Sand= 75birr/m3 Manpower Hourly Cost Forman Hourly Cost=12.50birr/hr UF= 1 DL=3.75birr/hr UF=9 Masons=10birr/hr UF=2 Equipment Hourly Cost Mixer= 40birr/hr Vibrator=12birr/hr Labour Hourly Out Put= 3.6m3/hr Unit Weight Gravel =2250kg/m3 Cement=1400kg/m3 Sand =1800kg/m3, Shrinkage=1.3: wastage=1.05 and take 15% profit and 15% Overhead
• 2. For the Given data Required Quantities Cement = 1*1.30*1.05*1400/6 = 318.50 Kg Cement= 6.37 Bags Sand = 2*1.3*1.05/6 = 0.455 m3 Gravel = 3*1.3*1.05/6 = 0.683 m3 PROJECT LABOR HOURLY OUTPUT DESCRIPTION Conctrete C-25 (1:2:3) EQUIPMENT DAILY OUTPUT ITEM RESULTANT 3.60 m3/hr 1) Material Cost 2) Labor Cost 3) Equipment cost Type of material Unit Qtty Unite rate Mat. Cost Labor (Direct) Unit Qtty U.F. Hourly Pay Total Equipment No U.F. Rental cost Total Cement Bag 6.370 150.00 955.50 Mason No 1 2 10.00 20 Mixer 1 1 40.00 40.00 Sand m3 0.455 75.00 34.13 Daily L. No 1 9 3.75 33.75 Vibrator 1 1 12.00 12.00 Gravel m3 0.683 200.00 136.50 Direct 2 - C.Forman No 1 1 12.50 12.50 Total (1) 1126.13 Total (2 ) 18.40 Total (3) 14.44 A=material cost 1126.13 B=Labor cost 18.40 C=Equipment cost 14.44 Direct cost= 1158.97 Rate /m3 1,506.66
• 3. 2. What are the Standard documents of a contract Comprises? (20Points)  Contract Form  Agreement  Contract Security  Performance Bond  Advance Payment Security  Contract  General Conditions of Contract  Special Conditions of Contract  Schedule of Requirements  Scope of Works  Technical Specifications  Drawings  Bills of Quantities (or Activities Schedule) 3. What are(is) A. The factors which affects Compaction (10 Points)
• 4. Water content Amount and type of compaction Type of soil Addition of mixture B. Optimum Water Content( 10 points) It is the water content correspondingto the maximum dry density 4. What is the Number denotes in concrete grade? 10 Points The numbers in the grade designation denote the specified characteristic compressive strength of concrete at 28days inMPa (N/mm2). 5. What is Weep hole? It’s Purpose and in which type of structure is it provided? (20 points) It is a hole provided in masonry structure in order to reduce water pressure in the structure. Exam for Engineer II
• 5. 1. In large Diversion Irrigation project what type of structures do you expect both in Head work and Farm Work (20 Points)  Head work  Head regulator  Under sluice  Divide wall  Wing wall  U/s and D/s apron  U/s and D/s cut off  Farm Work  Drop structure  Division Box  Flume Structure  Cross Drainage work, culvert  Road Crossing  Foot Path and etc. 2.What is (15 Points) A. Lined canal Canal with concrete or earth is placed on geo membrane with practical maximum side slope is 1:1.5 to ensure the concrete does not slip off the membrane whilst it sets. B. The purpose of lining C. Write type of lined canal 3.What is (15 Points) A. earth compaction
• 6. Compaction for earth: is compacting soil particles by mechanical means to decrease the porosity of the soil and Thus increase its dry density. B. Optimum water content During compaction there is relation b/n soil water content and compaction effort at which a particular soil attain maximum dry density C. Concrete Compaction Compaction for concrete: Removing air bubbles from the fresh concrete 4. What is construction management? Construction management is management of available construction resource Many, Materials, Machineries and Time. (20 points) 5. What are the various compacting equipment’s? (10 Points) Smooth wheel Roller Pneumatic tired roller Sheep foot roller Lorries and Pneumatic tired Track laying Vehicle 6. What are the construction materials to be tested in construction of irrigation project? And describe briefly (20 points) A. For concrete work Sand, gravel, cement B. Earth Work Soil, permeability, plasticity, C. Masonry Sand, cement, stone water absorption Exam for Engineer I
• 7. 1. Assume you are assigned in a machinery Base project and you are instructed to prepare schedules/Plans for the project. What are the schedules/plans you are going to prepare? (20 Points) Physical activity schedule Material Schedule Machinery utilization schedule Manpower schedule Financial schedule 2. What are types of Construction equipment/machinery deployed in large dam Irrigation Project according to its purposes? (20 Points) Administrative Vehicle Excavation equipment Earthmoving equipment Grading equipment Compaction equipment Watering equipment and etc. 3. What are the components of ground water supply Project? (20 points) Borehole Generator House Pressure line Distribution Line Water point Reservoir and etc. 4. What is C-20 concrete? (20) Characteristic compressive strength of a concrete achieving 20 MPa (N/mm2) in 28days. 5. Write the Use and /or the function of (20) points) A. Canal escape
• 8. The function of canal escape is to dispose the excess water coming in the canal B. Canal Head Regulator The main function of head regulator is to control the silt coming in the canal and to regulate the incoming discharge Additional Notes  Price escalation- refers to a scenario in which cost enhancements of the specified items in the specified formula are agreed to be given to the contractor with time over the base line agreed therein.  Price adjustment- refers to not only escalation or enhanced rates but variation in the negative side also.  The tender is the document containing the invitation by the Council to tenderers to offer a cost for delivering a service or supplies etc and the offer from the tenderer.  The contract is the document recording the acceptance by the Council of the tenderer’s offer that is signed (or sealed) by both parties.  Bid Bond-is a construction surety that a construction company agrees to pay in order to get a construction project.  Performance Bond-A bond which promises that the terms of a contract, or some of them, will be performed by the Principal/Contractor. It is something that a contractor purchases to act as a surety that the construction company will finish the project under the stipulations of the contract  Payment Bond-A bond which promises to pay some or all of the persons who provide material, labor, or services for prosecution of a contract.  In Construction project the different constraints have been identified as the Triple Constraints which are Quality, Schedule (time) and Cost simultaneously.  General Condition of contract defines the responsibilities of the parties involved in the contract- the owner and the general contractor. It describes the guidelines that will be used in the administration of the contract.
• 9.  Supplementary/Special Condition of contract-used to provide an extension of the General Provisions of the contract to fit the specific project at hand. They serve as amendments or augmentation to the General Conditions.