1 Exam Prep Walker's Guide to Estimating Questions and Answers

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1 1 Exam Prep Walker's Guide to Estimating Questions and Answers 1. What is the typical dead weight of a ¾ inch of plywood? A. 71 lbs. B lbs. C lbs. D. 28 lbs. 2. What is a defective masonry unit called? A. Broken B. Cull C. Monsim D. Weep hole 3. What does the abbreviation BJT stand for? A. Bed joint B. Building job trade C. Building j trap D. Between truss L.F. of 2 x 4 s is how many board feet? A. 1,734 B. 650 C. 144 D. 2, If the specifications call for Type S mortar, how much sand will be needed for 2 CF of mortar? A. 1.2 CF B. 2.0 CF C. 4.5 CF D. 6.0 CF 6. What type of mortar is recommended for use in stone retaining walls? A. Type M B. Type M or S C. Type S D. Type N 7. Which of the following is the highest strength mortar? A. Type M B. Type N C. Type O D. Type S 8. Which of the following mortar is not recommended for exterior masonry work? A. Type M B. Type N C. Type O D. Type S 1 Exam Prep Walker s 29 th and 30 th Edition 1

2 9. According to Walker s Estimating Guide, what is the total # of 8 x 2 ¼ x 3 ¾ standard brick needed to build an 85 lf long brick wall, 2 brick thick, 7 high with ¼ end mortar joint and ⅝ bed mortar joint? (Do not allow for waste.) A. 8,330 bricks B. 7,241 bricks C. 8,730 bricks D. 10,860 bricks 10. Modular face bricks are to be used to face a 2,500 sq. ft. wall. The nominal brick size is 2 2/3 x 4 x 8 and a 3/8 mortar joint is used. What amount of bricks is required for this job? A. 13,675 B. 15,224 C. 16,055 D. 16, Using the information of question 50, what amount of cubic yards of mortar is needed to complete this job? A B C D Approximately how many hours of labor would it take to cut down and remove a 35-foot tree by hand? A hours B hours C hours D hours 13. According to Walker s, information on the nature of thickness of underlying rock is usually obtained through which of the following? A. Hand Auger Boring B. Split Spoon Sampling C. Core Borings D. Clearing 14. A well point system us usually a series of properly sized well points which the area to be excavated and connected to a header pipe. A. Criss-cross B. Parallel or surround C. Run diagonally across D. Run lengthwise across 15. Your job calls for you to excavate a perimeter trench around a pool area that is 3 wide x 3 deep and runs 120 lineal feet. The soil is comprised of heavy soil and clay. You have no option but to excavate this trench by hand and you only have 1 day to get this accomplished. How many laborers will you have to hire? A. 5 B. 6 C. 7 D The cost of making core borings will depend upon which of the following? A. Location of the work B. Quantify of cores to be drilled 1 Exam Prep Walker s 29 th and 30 th Edition 2

3 C. Difficulty in getting to the holes D. All of the above 17. Your job calls for you to excavate a pit for a future pool. The pit measures 25 x 35 with an average depth of 4. The soil is composed of dry clay and you must take into account the soil swell factor. Since you must haul away ALL of the excavated soil, how many 10 cubic yard dump trucks must you order? A. 12 trucks B. 14 trucks C. 15 trucks D. 16 trucks 18. When installing standard residential chain link fencing the line posts are set at on center. A. 4 foot B. 6 foot C. 8 foot D. 10 foot 19. A pneumatic tamper enables a worker to do nearly times the amount of work as he can do by hand. A. 5 B. 8 C. 10 D In a site clearing operation, the object is to maximize the storage of any existing soil onsite. What will be the soil loss factor of any area cleared of tree stumps? A. 5% -10% B. 10%-15% C. 15%-50% D. 25%-50% 21. Your contract calls for the construction of a wood fence around the perimeter of a pool deck. The top rail of the fence is to be 2 x 6 lumber. The total perimeter of the fence is 600 lineal feet. How many board feet of wood is contained in the top rail of the fence? A. 600 B. 650 C. 500 D Architects and Engineers specify that fill material is to be placed in layers from inches and to compact each layer with some sort of roller or tamping equipment. A. 4 6 B C D When cutting old or cured concrete, using a diamond blade of correct specification, cutting time may be the amount given for cutting green concrete. A. Triple B. Double C. Quadruple D. One and one-half times 1 Exam Prep Walker s 29 th and 30 th Edition 3

4 24. A pneumatic tamper enables a worker to do nearly times the amount of work he can do by hand. A. 3 B. 4 C. 8 D As part of your pool site construction, you will be required to construct a 4 high by 50 long retaining wall using standard Concrete Masonry Units (CMUs). NOT accounting for the footer or tie beam and using only the information provided, how many CMUs will be needed to construct this wall? A. 150 B. 200 C. 225 D When ordering trucks for an excavation job, the truck capacity should be at least times the dipper or bucket capacity of the excavator. a. 2 b. 3 c. 4 d. 5 Answer reference: 27. How many board feet of wood would be required to build a partition wall that measures 8 high x 25 long and is 4 thick with one 2 x 4 sole plate but a double plate at the top? Assume studs placed a 18 O.C. a. 12 board feet b Board Feet c Board Feet d. 126 Board Feet Answer reference 28 What is the cost of blade wear for a Green-Con blade of proper specification for a 2 cut in green concrete? a. $ / If b. $ / If c. $ / If d. $ / If Answer reference: 1 Exam Prep Walker s 29 th and 30 th Edition 4

5 ANSWER KEY 1 What is the typical dead weight of a ¾ inch of plywood? A. 71 lbs. (Walker s v29 pg. 434 v30 pg. 424) B lbs. C lbs. D. 28 lbs. 2 What is a defective masonry unit called? A. Broken B. Cull (Walker s v29pg v Glossary) C. Monsim D. Weep hole 3 What does the abbreviation BJT stand for? A. Bed joint (Walker s v29 pg. 50 v30 pg48) B. Building job trade C. Building j trap D. Between truss L.F. of 2 x 4 s is how many board feet? A. 1,734 (Walker s v29 pg. 862 v30 pg846) 2 x 4/12 x 2600 = B. 650 C. 144 D. 2,600 5 If the specifications call for Type S mortar, how much sand will be needed for 2 CF of mortar? A. 1.2 CF In Table 4.5 CF of sand yields = $9.36 with a cost per CF = B. 2.0 CF ( v29 pg v30 pg 621) $2.08; $9.36/$2.08 = 4.5 CF C. 4.5 CF D. 6.0 CF Sand yield per CF = 4.5/4.5 = 1; Yield for 2 CF = 2 x 1 = What type of mortar is recommended for use in stone retaining walls? A. Type M (Walker s v29 pg. 636 v30 pg 621) B. Type M or S C. Type S D. Type N 7 Which of the following is the highest strength mortar? A. Type M (Walker s pg. 636 v30 pg621) B. Type N C. Type O D. Type S 8 Which of the following mortar is not recommended for exterior masonry work? A. Type M B. Type N C. Type O (Walker s v29 pg. 637 v30 pg 621) D. Type S 1 Exam Prep Walker s 29 th and 30 th Edition 5

6 9 According to Walker s Estimating Guide, what is the total # of 8 x 2 ¼ x 3 ¾ standard brick needed to build an 85 lf long brick wall, 2 brick thick, 7 high with ¼ end mortar joint and ⅝ bed mortar joint? (Do not allow for waste.) A. 8,330 bricks Area = 85 x 7 = 595 Bricks = 595 x = B. 7,241 bricks (Walker sv29 pg. 647 v30 pg 631) C. 8,730 bricks D. 10,860 bricks 10 Modular face bricks are to be used to face a 2,500 sq. ft. wall. The nominal brick size is 2 2/3 x 4 x 8 and a 3/8 mortar joint is used. What amount of bricks is required for this job? A. 13,675 B. 15,224 2,500 X = 16,875 C. 16,055 D. 16,875 (Walker s v29 pg. 669 v30 pg 653) 11 Using the information of question 50, what amount of cubic yards of mortar is needed to complete this job? A (2,500/100) X 5.47/27 = cy B (Walker s v29 pg. 669 v30 pg 653) C D Approximately how many hours of labor would it take to cut down and remove a 35-foot tree by hand? A hours B hours (Walker s v29 & v30 pg. 153, Table: Cutting-Removing Trees by Hand) C hours D hours 13 According to Walker s, information on the nature of thickness of underlying rock is usually obtained through which of the following? A. Hand Auger Boring B. Split Spoon Sampling C. Core Borings (Walker s v29 & v30 pg. 151) D. Clearing 14 A well point system us usually a series of properly sized well points which the area to be excavated and connected to a header pipe. A. Criss-cross B. Parallel or surround (Walker sv29 pg. 298 v30 pg 297) C. Run diagonally across D. Run lengthwise across 15 Your job calls for you to excavate a perimeter trench around a pool area that is 3 wide x 3 deep and runs 120 lineal feet. The soil is comprised of heavy soil and clay. You have no option but to excavate this trench by hand and you only have 1 day to get this accomplished. How many laborers will you have to hire? A. 5 B. 6 C. 7 D. 8 (Walker s v29 pg. 181, Table: Hand Excavations) Walker s v30 pg The cost of making core borings will depend upon which of the following? A. Location of the work B. Quantify of cores to be drilled Per table a laborer can excavate an average of 5 cu yds. of heavy soils per day. 3 x 3 x 120 = 1080 cu ft. / 27 = 40 cu yds. 40 / 5 = 8 1 Exam Prep Walker s 29 th and 30 th Edition 6

7 C. Difficulty in getting to the holes D. All of the above (Walker s v29 & v30 pg. 151 Core Borings) 17 Your job calls for you to excavate a pit for a future pool. The pit measures 25 x 35 with an average depth of 4. The soil is composed of dry clay and you must take into account the soil swell factor. Since you must haul away ALL of the excavated soil, how many 10 cubic yard dump trucks must you order? A. 12 trucks B. 14 trucks C. 15 trucks D. 16 trucks (W-v29 & v30 pg. 170, Table: Swell Factor) 18 When installing standard residential chain link fencing the line posts are set at on center. A. 4 foot B. 6 foot C. 8 foot D. 10 foot (Walker s v29 & v30 pg. 313) 25 x 35 x 4 = 3,500 cu ft. 3,500 x 1.20 (swell factor) = 4,200 cu ft. 4,200 / 27 = cu yds / 10 cu yds. = trucks (16 trucks) Remember that this is a state exam and does not normally test for local HVHZ wind load specifications unless specifically asked for. 19 A pneumatic tamper enables a worker to do nearly times the amount of work as he can do by hand. A. 5 B. 8 C. 10 (Walker s v29 & v30pg. 246, Table: Backfill Using a Pneumatic Tamper) D In a site clearing operation, the object is to maximize the storage of any existing soil onsite. What will be the soil loss factor of any area cleared of tree stumps? A. 5% -10% B. 10%-15% C. 15%-50% (Walker s v29 & v30 pg , Table: Stripping and Storing of Topsoil) D. 25%-50% 21 Your contract calls for the construction of a wood fence around the perimeter of a pool deck. The top rail of the fence is to be 2 x 6 lumber. The total perimeter of the fence is 600 lineal feet. How many board feet of wood is contained in the top rail of the fence? A. 600 (Walker s v29 pg. 862 v30 pg 846) B x 6 x 600 / 12 = 600 C. 500 D Architects and Engineers specify that fill material is to be placed in layers from inches and to compact each layer with some sort of roller or tamping equipment. A. 4 6 B C (Walker s v29 pg. 233 v30 pg236) D When cutting old or cured concrete, using a diamond blade of correct specification, cutting time may be the amount given for cutting green concrete. A. Triple B. Double (Walker s v29 pg. 570 v30 pg 559) C. Quadruple D. One and one-half times 1 Exam Prep Walker s 29 th and 30 th Edition 7

8 24 A pneumatic tamper enables a worker to do nearly times the amount of work he can do by hand. A. 3 B. 4 C. 8 D. 10 (Walker s v29 pg. 246 v30 pg 247) 25 As part of your pool site construction, you will be required to construct a 4 high by 50 long retaining wall using standard Concrete Masonry Units (CMUs). NOT accounting for the footer or tie beam and using only the information provided, how many CMUs will be needed to construct this wall? A x 50 = 200 / 100 = 2 x = 225 CMUs B. 200 C. 225 (Walker s v29 pg 715 v30 pg 699) D When ordering trucks for an excavation job, the truck capacity should be at least times the dipper or bucket capacity of the excavator. e. 2 f. 3 g. 4 h. 5 Answer reference: Walker s V29 PG 213 V30 PG How many board feet of wood would be required to build a partition wall that measures 8 high x 25 long and is 4 thick with one 2 x 4 sole plate but a double plate at the top? Assume studs placed a 18 O.C. a. 12 board feet b Board Feet c Board Feet d. 126 Board Feet Answer reference Walkersv29 pg 862 & 867 Formula for board feet is in Walker s 6.2, Pg. 748; name of lumber x length/ 12 = BF Formula to calculate # studs is span / spacing, round up and add 1 (this places stud at each end Double top plate: 2 x 4 x 25 / 12 x 2 = BF Bottom sole plate: 2 x 4 x 25/ 12 = BF Stud wall: 25/1.5 = (round up) 17+1 = 18 studs with one on each end 18 studs x 8 high = 144 L.F. Walker s v30 pg 846 & x 4 x 144 / 12 = 96 BF = 126 BF 28 What is the cost of blade wear for a Green-Con blade of proper specification for a 2 cut in green concrete? a. $ / If b. $ / If c. $ / If d. $ / If Answer reference: Walker s v29 & v30 pg Exam Prep Walker s 29 th and 30 th Edition 8