Caterpillar Performance Handbook, January 2017, SEBD0351-47

Measuring Production On-the-Job ● Attachments

Bulldozers

SIDEVIEW

TOPVIEW

MEASURING PRODUCTION ON-THE-JOB Three generally accepted methods of measuring bull- dozer production are listed below. The third method is empirical, but is the simplest to conduct. 1. Employing Surveying Techniques a. Conduct time study and then cross-section the cut to determine the volume of material removed. (Production in Bm 3 or BCY per unit of time) b. Conduct time study and then cross-section the fill to determine the volume of fill material. (Produc- tion in Lm 3 or LCY per unit of time) 2. Weighing Blade Loads Conduct time study and weigh material moved by bulldozer by weighing the loader bucket loads. 3. Measuring Blade Loads a. Dozer operation (1) Pick up and carry load onto a level area and stop. (2) Raise the blade directly over the pile pulling forward slightly as blade comes up, leaving a nearly symmetrical pile. (3) Reverse to clear the pile. b. Measurements (1) The average height (H) of the pile in feet. Hold

GROUSER MARKS

(2) The average width (W) of the pile in feet. Hold the tape horizontally over the pile and sight at the inside edge of each grouser mark and the corresponding opposite side of the pile. (3) The greatest length (L) of the pile in feet. Hold the tape horizontally over the pile and sight at each end of the pile. c. With the above measurements, now compute the blade load. (1) Average the height measurement (H) (2) Average the width measurement (W) (3) Load (Lm 3 or LCY) = 0.0138 × (HWL) (4) Load (Bm 3 or BCY) = Lm 3 or LCY × LF d. Combine the calculated blade load with time study to figure production.

the tape vertically at the inside edge of each grouser mark. Sight along top of the pile to obtain the correct measurement.

ATTACHMENTS

VARIABLE RADIUS (VR) SEMI-U BLADES

D6T

D7R

D8R/D8T

Capacity

5.81 m 3

7.84 m 3

11.28 m 3 4369 mm 1778 mm

7.6 yd 3

10.25 yd 3

14.75 yd 3

Width Height Weight

3349 mm 1473 mm

3912 mm 1626 mm 2000 kg

11'0" 4'10"

12'10"

14'4" 5'10"

5'4"

1360 kg

3010 kg

3000 lb

4400 lb

6640 lb

LANDFILL BLADES

D6T

D7E

D7R

Capacity

12.5 m 3

14 m 3

18.1 m 3

16.4 yd 3

18.4 yd 3

23.7 yd 3

Width Height Weight

3886 mm 1796 mm

3713 mm 1524 mm

4267 mm 2083 mm

12'9"

12'2"

14'0" 6'10"

5'10.7" 3200 lb

5'0"

1450 kg

4380 kg

2608 kg

9636 lb

5750 lb

LANDFILL BLADES

D8R/D8T

D9R/D9T

Capacity

24.4 m 3

38.5 m 3

32 yd 3 16'2"

50.3 yd 3 17'10" 7'1.75" 10,800 lb

Width Height Weight

4928 mm 2286 mm

5442 mm 2178 mm 4900 kg

7'6"

3175 kg

7000 lb

This list is not all inclusive. Contact your Cat dealer for special attachment needs.

19-56 Edition 47