Pipe and Excavation Contracting
_____ testing is NOT a kind of checking out this is usually targeted for pipeline checking out.
A. Visual
B. Water
C. Air
D. Hydrostatic - ANS-D. Hydrostatic
248/249
A .75 percentage upward thrust indicates?
A. A upward thrust of seventy five feet in one hundred feet
B. A upward thrust of 7.5 ft in 100 ft
C. A rise of .Seventy five toes in a hundred feet
D. A upward push of seventy five inches in one hundred feet - ANS-C. A rise of 0.Seventy five
feet in 100 toes
119
A 0.Seventy five percentage rise suggests?
A. A upward thrust of seventy five ft in a hundred ft
B. A upward thrust of 7.5 ft in a hundred toes
C. A rise of zero.Seventy five toes in a hundred ft
D. A upward thrust of 0.Seventy five inches in 100 ft - ANS-C. A upward thrust of 0.Seventy five
feet in a hundred feet
one hundred twenty
A three hundred cubic backyard quantity of unfastened soil with a load component of zero.769
is to be moved. The average hourly manufacturing rate to be predicted is cubic yards.
A. 390.1 bank
B. 390.1 unfastened
C. 230.7 financial institution
D. 230.7 unfastened - ANS-C. Three hundred x .769 = 230.7
sixty six
,A 480' long run of 21" PVC is located between manholes. The invert elevation of the pipe at
manhole Number One is 100.00'. The grade from the Number Two manhole is .42 percent. The
low give up invert has a?
A. 2.01 Fall
B. 2.01 Rise
C. Zero.42 Fall
D. 0.42 Rise - ANS-A. 2.01 Fall
120
A 6 foot sheepsfoot roller is visiting at a velocity of 1.25 miles per hour. The 12 inch lifts take 8
passes of the curler for eight inch compaction. The human efficiency is 83 percentage and the
operator correction thing is seventy five percent. The hourly production is?
A. Less than 30 cubic yards
B. Between 30 and 60 cubic yards
C. Between 60 and ninety cubic yards
D. More than ninety cubic yards - ANS-C. 6' huge x 1.25 mph x eight" raise x sixteen.Three =
978
978/eight passes = 122.25 CCY per hour production fee
122.25 x .Eighty three human efficiency x .Seventy five operator correction = 76.1 CCY in
keeping with hr.
192/193
A 6 foot huge sheepsfoot roller travels at 1.25 miles per hour. The 12 inch lifts can be
compacted to eight inches. There could be 8 passes of the roller. Machine efficiency is eighty
three percent and there's an operator correction component of 75 percent. Hourly manufacturing
need to be how many cubic yards?
A. One hundred fifteen
B. 102
C. 51
D. Seventy seven - ANS-D. 6 x 1.25 x eight x 16.3/8 x 83% x seventy five% Yields seventy six.1
192/193
A backhoe is high-quality whilst running within what percentage of its most digging intensity?
A. 50
B. 60
C. 70
D. 80 - ANS-C. 70
,one hundred fifty
A backhoe is most efficient whilst working inside a maximum digging depth of ______?
A. 60 percentage
B. 70 percent
C. 6 ft
D. 7 feet - ANS-B. 70 percentage
150
A backhoe is used for the subsequent excavation:
Four foot deep via 2-foot huge trench
Moist sandy soil swell situations of 17 percent
Cycle time is 12 seconds
Machine cycle time is 15 seconds
Heaped bucket ability is eight loose cubic ft
Eight-foot sets
The linear ft of trench production according to hour is?
A. Two hundred
B. 236
C. 210
D. 214 - ANS-B. Set = length of trench a backhoe can excavate from one position = eight feet
Bank cubic toes = 4ft x 2ft x 8ft (length of set) = sixty four toes^three
Loose cubic feet = 4ft x 2ft x 8ft x 1.17 = seventy four.88 ft^3
Volume of dust in set / dirt moved in keeping with cycle = digging cycles in keeping with set
74.88 feet^three / 8ft^3 = nine.36 digging cycles in step with set
Digging cycles according to set x average cycle time = time required to excavate a fixed
9.36 x 12 seconds/cycle = 112.32 seconds upload 15 seconds to transport the gadget
112.32 + 15 = 127.32 sec / 60 sec according to minute = 2.122 minutes
How many sets in an hour = 60 mins in step with hour / 2.122 mins every set = 28.27 sets/hour
28.27 units/hour x 8 toes consistent with set = 226.16 ft consistent with hour
146/147
A backhoe is used for the subsequent excavation:
Six foot deep via three foot huge trench loamy soil situations
Cycle time is 15 seconds
Machine cycle time 20 seconds
, Heaped bucket capability is 8 unfastened cubic ft
Ten-foot sets
The linear ft of trench manufacturing in step with hour is?
A. Seventy eight.4
B. Eighty two.6
C. Ninety one.Eight
D. 99.Three - ANS-A. Set = length of a trench a backhoe can excavate from one function = 10ft
Swell Factor for loamy soil = 30%
Bank cubic toes = 6ft x 3ft x 10ft (period of set) = one hundred eighty toes^3
Loose cubic toes = 6ft x 3ft x 10ft x 1.3 = 234 ft^three
Volume of dust in set/dirt moved in keeping with cycle = digging cycles in step with set
234 toes^three/8 ft^three = 29.25 digging cycles in step with set
Digging cycles per set x common cycle time = time required to excavate a hard and fast
29.25 x 15 seconds/cycle = 438.75 seconds upload 20 seconds to transport machine
438.74+20 = 458.Seventy five seconds / 60 seconds in step with minute = 7.Sixty five minutes
How many units in an hour = 60 minutes consistent with hour / 7.65 mins every set = 7.Eighty
four sets/hour
7.84 sets/hour x 10ft per set = 7.84 ft consistent with hour
A benchmark is a/an _______?
A. Point of recognised distance
B. Point of regarded elevation
C. Grade stake gradient
D. Topographic mark - ANS-B. Point of regarded elevation
111
A bulldozer going downhill at a 30 percent grade have to push how tons dirt?
A. Double the regular quantity
B. One 1/2 the everyday quantity
C. One third the normal amount
D. One hundred fifty percentage more - ANS-D. 150 percentage greater
eighty four
A not unusual test used to determine if a pipe has flattened or deflected below backfill and
compaction is the _____ take a look at.
A. Mandrake
B. Pull
_____ testing is NOT a kind of checking out this is usually targeted for pipeline checking out.
A. Visual
B. Water
C. Air
D. Hydrostatic - ANS-D. Hydrostatic
248/249
A .75 percentage upward thrust indicates?
A. A upward thrust of seventy five feet in one hundred feet
B. A upward thrust of 7.5 ft in 100 ft
C. A rise of .Seventy five toes in a hundred feet
D. A upward push of seventy five inches in one hundred feet - ANS-C. A rise of 0.Seventy five
feet in 100 toes
119
A 0.Seventy five percentage rise suggests?
A. A upward thrust of seventy five ft in a hundred ft
B. A upward thrust of 7.5 ft in a hundred toes
C. A rise of zero.Seventy five toes in a hundred ft
D. A upward thrust of 0.Seventy five inches in 100 ft - ANS-C. A upward thrust of 0.Seventy five
feet in a hundred feet
one hundred twenty
A three hundred cubic backyard quantity of unfastened soil with a load component of zero.769
is to be moved. The average hourly manufacturing rate to be predicted is cubic yards.
A. 390.1 bank
B. 390.1 unfastened
C. 230.7 financial institution
D. 230.7 unfastened - ANS-C. Three hundred x .769 = 230.7
sixty six
,A 480' long run of 21" PVC is located between manholes. The invert elevation of the pipe at
manhole Number One is 100.00'. The grade from the Number Two manhole is .42 percent. The
low give up invert has a?
A. 2.01 Fall
B. 2.01 Rise
C. Zero.42 Fall
D. 0.42 Rise - ANS-A. 2.01 Fall
120
A 6 foot sheepsfoot roller is visiting at a velocity of 1.25 miles per hour. The 12 inch lifts take 8
passes of the curler for eight inch compaction. The human efficiency is 83 percentage and the
operator correction thing is seventy five percent. The hourly production is?
A. Less than 30 cubic yards
B. Between 30 and 60 cubic yards
C. Between 60 and ninety cubic yards
D. More than ninety cubic yards - ANS-C. 6' huge x 1.25 mph x eight" raise x sixteen.Three =
978
978/eight passes = 122.25 CCY per hour production fee
122.25 x .Eighty three human efficiency x .Seventy five operator correction = 76.1 CCY in
keeping with hr.
192/193
A 6 foot huge sheepsfoot roller travels at 1.25 miles per hour. The 12 inch lifts can be
compacted to eight inches. There could be 8 passes of the roller. Machine efficiency is eighty
three percent and there's an operator correction component of 75 percent. Hourly manufacturing
need to be how many cubic yards?
A. One hundred fifteen
B. 102
C. 51
D. Seventy seven - ANS-D. 6 x 1.25 x eight x 16.3/8 x 83% x seventy five% Yields seventy six.1
192/193
A backhoe is high-quality whilst running within what percentage of its most digging intensity?
A. 50
B. 60
C. 70
D. 80 - ANS-C. 70
,one hundred fifty
A backhoe is most efficient whilst working inside a maximum digging depth of ______?
A. 60 percentage
B. 70 percent
C. 6 ft
D. 7 feet - ANS-B. 70 percentage
150
A backhoe is used for the subsequent excavation:
Four foot deep via 2-foot huge trench
Moist sandy soil swell situations of 17 percent
Cycle time is 12 seconds
Machine cycle time is 15 seconds
Heaped bucket ability is eight loose cubic ft
Eight-foot sets
The linear ft of trench production according to hour is?
A. Two hundred
B. 236
C. 210
D. 214 - ANS-B. Set = length of trench a backhoe can excavate from one position = eight feet
Bank cubic toes = 4ft x 2ft x 8ft (length of set) = sixty four toes^three
Loose cubic feet = 4ft x 2ft x 8ft x 1.17 = seventy four.88 ft^3
Volume of dust in set / dirt moved in keeping with cycle = digging cycles in keeping with set
74.88 feet^three / 8ft^3 = nine.36 digging cycles in step with set
Digging cycles according to set x average cycle time = time required to excavate a fixed
9.36 x 12 seconds/cycle = 112.32 seconds upload 15 seconds to transport the gadget
112.32 + 15 = 127.32 sec / 60 sec according to minute = 2.122 minutes
How many sets in an hour = 60 mins in step with hour / 2.122 mins every set = 28.27 sets/hour
28.27 units/hour x 8 toes consistent with set = 226.16 ft consistent with hour
146/147
A backhoe is used for the subsequent excavation:
Six foot deep via three foot huge trench loamy soil situations
Cycle time is 15 seconds
Machine cycle time 20 seconds
, Heaped bucket capability is 8 unfastened cubic ft
Ten-foot sets
The linear ft of trench manufacturing in step with hour is?
A. Seventy eight.4
B. Eighty two.6
C. Ninety one.Eight
D. 99.Three - ANS-A. Set = length of a trench a backhoe can excavate from one function = 10ft
Swell Factor for loamy soil = 30%
Bank cubic toes = 6ft x 3ft x 10ft (period of set) = one hundred eighty toes^3
Loose cubic toes = 6ft x 3ft x 10ft x 1.3 = 234 ft^three
Volume of dust in set/dirt moved in keeping with cycle = digging cycles in step with set
234 toes^three/8 ft^three = 29.25 digging cycles in step with set
Digging cycles per set x common cycle time = time required to excavate a hard and fast
29.25 x 15 seconds/cycle = 438.75 seconds upload 20 seconds to transport machine
438.74+20 = 458.Seventy five seconds / 60 seconds in step with minute = 7.Sixty five minutes
How many units in an hour = 60 minutes consistent with hour / 7.65 mins every set = 7.Eighty
four sets/hour
7.84 sets/hour x 10ft per set = 7.84 ft consistent with hour
A benchmark is a/an _______?
A. Point of recognised distance
B. Point of regarded elevation
C. Grade stake gradient
D. Topographic mark - ANS-B. Point of regarded elevation
111
A bulldozer going downhill at a 30 percent grade have to push how tons dirt?
A. Double the regular quantity
B. One 1/2 the everyday quantity
C. One third the normal amount
D. One hundred fifty percentage more - ANS-D. 150 percentage greater
eighty four
A not unusual test used to determine if a pipe has flattened or deflected below backfill and
compaction is the _____ take a look at.
A. Mandrake
B. Pull
