California Pipeline Contractor (C-34 License) Practice Exam

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• If 60 gallons per minute flow passes through a 1-1/2 inch pipe, what is the flow in gallons per minute through a 3 inch pipe?
• Name two typical coatings used on underground steel pipelines.
• Two cubic feet of water contain how many gallons?
• Abandoned sewers must be capped off within how many feet of the property line?
• Which material is commonly used for potable water distribution and is a rigid plastic?
• What element is used as a coating on galvanized pipe?
• Why does natural gas have an odor?
• What is a common specification for protecting steel pipelines in soil—to prevent corrosion?
• What is the primary purpose of a hydrostatic test in pipelines?
• Which type of copper tube is marked with a red stripe?
• Which stripe color identifies DWV copper tube?
• During installation, what is a typical requirement for pipe alignment and grade?
• Which utility line typically does not require fine grading?
• Which statement about hydraulic shoring is not true?
• Which wage schedule may apply to California public works contracts?
• Which step helps ensure that backfilled trench features do not settle over time?
• How soon after a manhole bottom is poured can you break out any laterals?
• When laying a gravity flow sewer line, you should check each pipe for its what as it is laid?
• In the typical installation sequence, which step comes after laying the pipe and before surface restoration?
• You are caulking joints for cast iron bell- and spigot soil pipe. You pack the joint with oakum using a caulking iron. You heat the lead to 680 °F , allow it to cool for five minutes, and then fill the joint with lead to a depth of 1/4". You have proceeded:
• Shoring is required for excavations with a minimum depth of:
• Which hazard is addressed by permit-required confined space entry?
• Using a load factor of 50%, how many 10-yard dump truck loads are required to export 6 inches of paving removed from a 120 ft by 4 ft trench?
• What is the typical purpose of hydrostatic pressure testing on a new pipeline before backfilling?
• Which of the following statements is true about ABS sewer pipe?
• In trenching, what soil description demands the use of a trench box or sloping to prevent cave-ins?
• Galvanized wrought iron or galvanized steel pipe must be kept at least how many inches above ground?
• Which type of material would you use as initial backfill for asbestos cement pipe?
• When water testing a section of pipe between manholes:
• For a 1 inch pipe 1,000 feet long, would a leakage of 150 gallons per 24 hours be acceptable?
• When laying cement-joint pipe and plastic cement is used, how much mortar cream is needed?
• What is hydrostatic testing and what does it verify?
• Which material is widely recognized for its high strength and durability in piping applications?
• Before trenching when coordinating with other utilities, what is the critical step?
• According to CALTRANS specifications, how many pounds of Portland cement should be used for one cubic yard of Class A concrete?
• Which statement about measurement of sewer pipe for payment is not true according to CALTRANS specifications?
• The tip of an oxyacetylene cutting torch should be held at what angle when cutting cast iron?
• For long HDPE pipelines, which joint method is commonly used to minimize the number of joints?
• As-built drawings document which aspect of a pipeline project?
• What is the purpose of backflow prevention devices in water pipelines?
• What method should be used to install electrical and telephone conduits in the same trench?
• What is the primary purpose of obtaining utility permits before pipe installation?
• What is the purpose of trench shoring or shielding?
• When running sewer laterals from the main, you set the fittings away from the trenching operation. This procedure is:
• Type DWV copper tube is marked with which stripe color?
• Building sewer cleanouts must be installed at intervals not to exceed how many feet in straight runs?
• Hydrants must have at least a ___ inch connection with the mains.
• You are joining PVC pipe and fittings with solvent cement using an applicator that is half the diameter of the pipe. The applicator is left in the cement between applications. After each assembly, excess cement is wiped from the pipe at the end of the fitting socket. You are proceeding:
• Shoring is required for excavations with a minimum depth of:
• Under what condition might concrete encasement be required for steel pipelines?
• In gravity sewer line installation using a solid coupling pipe, on which end should the coupling be attached?
• Which tool will not be needed when laying sewer lines that are hubbed together?
• When shoring a trench with screw jacks, the minimum crew required to set the jack screws is:
• Cleanouts for building sewers should be installed on any turn that is more than how many degrees?
• Which pipeline does not require fine grading?
• Who typically approves a change order?
• Which copper tube type is the heaviest?
• What is the purpose of installing a bypass when working near an existing utility corridor?
• What is a typical acceptance criterion for a hydrostatic test?
• PVC (PSM) sewer pipe must be marked with the manufacturer's name or trademark, nominal pipe size, and other identifying information at intervals of ___ feet or less.
• What is the purpose of compaction testing for backfill?
• How many gallons can a 12-inch diameter, 500-foot long pipe hold?
• In HDPE piping, which method is commonly used specifically for tees?
• In pipeline operations, which tool is used to remove liquids or separate gas pockets?
• Who typically prepares shop drawings?
• What is the purpose of erosion control devices during trench work?
• What is the primary purpose of calibrating flow meters in a water pipeline system?
• Which statement describes the essential elements of a proper welding program for field joints?
• What type of copper tube is marked with a blue stripe?
• What key element should be included in an 'as-built' record for a pipeline project?
• Which statement about solvent cement joints is incorrect?
• What is the longest length of horizontal drainage pipe allowed before a cleanout is required?
• For pipe installations in dense soils or sandy soils, what is the typical bedding material?
• When PVC pipe is used for irrigation systems, which schedules must be used on the discharge sides and the supply sides of control valves?
• What is the purpose of running a swab through each pipe length prior to welding?
• The crane signalman signals by tapping his right elbow with his left hand. This means:
• Which statement best describes the difference between shop drawings and as-built drawings?
• Which material would you use as initial backfill for asbestos cement pipe?
• What is the importance of 'as-built drawings' after project completion?
• In the joint band example, what is the width of the band applied?
• What is bedding in trenching?
• In the joint band example for a 60" pipe, what is the stated pipe diameter?
• How do you adapt plastic to cast-iron bell and spigot?
• What is a "change order" in construction contracts?
• Which type of documentation is typically required to prove that proper materials were used and installed according to code?
• According to the UPC, the maximum distance between manholes may not exceed?
• If trench walls are too loose or soft for shoring, the walls must be sloped a minimum of:
• The maximum grade for drain lines in a disposal field is ___ per 100 feet.
• What is the primary use of an as-built record after pipeline construction?
• Solvent cement used to join PVC pipe and fittings should be allowed to set for at least ___ before handling.
• Which joint type is commonly used with ductile iron pipe?
• What is the role of a pre-construction meeting?
• What governs deflection and alignment limits for pipeline joints?
• In irrigation PVC installations, which Schedule is used on the discharge side of control valves?
• Exposed gas piping must be kept at least how many inches above grade?
• What document typically governs the allowable deflection and alignment tolerances for pipeline installations?
• Which drawings document the actual constructed configuration?
• The crane signalman signals by clasping both hands in front of his body. This means:
• Which material is the heaviest type of earth to put on top of a pipe?
• In pipeline operations, what is a 'pig' used for?
• Which is the most efficient trenching equipment?
• Which statement correctly contrasts installation handling for PVC and ductile iron pipe?
• With special permission, the slope for a 6-inch building sewer may range from 1/4 inch per foot to 1/8 inch per foot. Which expression best describes this range?
• What is the purpose of material traceability on a pipeline project?
• Which material is commonly used for potable water distribution and is known for being flexible and easy to install?
• If the depth of the street sewer prevents a uniform slope of 1/4 inch per foot for a 6-inch building sewer, what slope may be allowed with special permission?
• The cross-sectional area of a trench that is 5 feet wide and 3 feet deep is:
• How much aggregate backfill would be used for a 3' x 5' x 4,000' trench with a 1 inch diameter pipe?
• According to the STANDARD SPECIFICATIONS FOR PUBLIC WORKS CONSTRUCTION, a ladder installed in a 4-foot-deep trench should project how many inches above the top of the trench?
• What is the permitted leakage per 24 hours when testing a 1 inch pipe 1,000 feet long?
• The fastest and most efficient way of laying sewer pipe with screw type rubber couplings involves how many workers in the ditch?
• Which organization provides standards for ductile iron and steel pipe joints commonly used in pipelines?
• Which material is heaviest to place on top of a pipe?
• When welding an oil pipeline and the temperature is below 32 °F, the pipe ends should be preheated to:
• Right-of-way agreements usually provide that the oil pipeline contractor may:
• When laying bell-and-spigot sewer pipe, the bell should face which direction?
• Which drainage pipe joint classification has the most tensile strength?
• Which documents provide the allowable tolerances and material requirements for pipeline installations?
• Which stripe color identifies Type L copper tube?
• Which test is the oldest method for compaction?
• What is a typical method for joining HDPE pipe in the field?
• What is the function of valves installed along a pipeline?
• What is the purpose of backfilling around water mains and services?
• In a trench where a nonmetallic sewer line and a water service pipe are installed together, placing the water pipe on a shelf so that its bottom is 12 inches above the sewer line indicates you have proceeded:
• What safety practice is essential when working in an open trench?
• On oil pipeline projects, direct operating costs represent which items?
• When replacing pavement over a trench, what is meant by 'overcutting'?
• The ends of an abandoned sewer pipe may be capped with a brick wall at least how thick?
• What kind of coating or coating protection is commonly specified for steel pipelines exposed to soil?
• How much does a gallon of water weigh?
• How much soil will you have to excavate for a ditch that is 5' wide, 3' deep, and 3,600' long?
• In the caulking example, at what temperature should the lead be heated?
• In the given example, the 60 gallons per minute flow is associated with which pipe diameter?
• What is critical when performing a welding operation on steel pipe in the field?
• What minimum horizontal distance is required between a domestic water well and a drainage line?
• Granular bedding serves which primary purpose in pipe installations?
• PPE stands for, and which of the following are examples in pipeline work?
• During excavation, how far from the trench edge should excavated spoils be deposited?
• How should confined space entry be handled on a pipeline job site?
• Which of the following is a common trench backfill requirement after pipe installation?
• Of the following drainage pipe joints, which classification has the most tensile strength?
• In a disposal field drain installation, if the invert of the inlet is placed 1 inch above the outlets, you have proceeded:
• Solvent cement set time before handling PVC joints is at least how long?
• What tool is used to buff the beveled edges during pipe end preparation?
• The maximum spacing between shores for 2 inch thick sheeting with nonstress grade lumber is:
• What is the main purpose of reviewing project plans and specifications before beginning a C-34 pipeline installation?
• Which set of specifications is correct? Cement per cubic yard, water per gallon, ladder projection, and cleanout angle are:
• Which type of test is most commonly used to verify the integrity of a newly installed pipeline before backfilling?
• What is the typical sequence for installing a new pipeline near an existing utility corridor?
• How many gallons are in a cubic foot of water?
• Which combination of statements is true regarding water weight, tensile strength, backfill material, and welding preheat?
• What is the minimum pipe size for a fire service?
• A post indicator valve for a private fire service main must be located at least how far from a building?
• Where is a thrust block typically located in a piping system?
• What is the purpose of bedding material under installed pipe?
• What is the cleanest, easiest, cheapest way to test a sanitary sewer main or service?
• When welding an oil pipeline in temperatures below freezing, the ends should be preheated to which range?
• What is a thrust block and when is it used?
• In hydraulic jack fluid mixing, how much water is used with one quart of hydraulic fluid?
• Who discovered metal corrosion cells, which have been largely eliminated in modern pipelines?
• The discovery of metal corrosion cells is attributed to which scientist?
• What is the maximum spacing of shores for 2" thick sheeting or lagging when nonstress grade lumber is used?
• What is the maximum horizontal drainage run length before a cleanout is required?
• Which statement best describes essential considerations when crossing a pipeline under a road or railway?
• ABS sewer pipe is sold by which unit?
• During pipe preparation, when should clamps be installed?
• If you mix 2 quarts of hydraulic jack fluid, how many gallons of water are required?
• A 1/8 bend in pipe fittings corresponds to how many degrees?
• What is the volume in cubic yards of material removed from a trench measuring 120 ft by 4 ft with a removal depth of 6 inches?
• The ends of an abandoned sewer pipe may be capped with a brick wall at least ___ thick with cement mortar joints.
• For shoring a trench with screw jacks, how many crew members are needed to set the jack screws?
• The not a bituminous pipe coating system among the following options is:
• In preparing to weld pipe for an oil pipeline, the described sequence ends with clamps installed after the pipe ends are aligned. This procedure is:
• What is the purpose of using a line locator or potholing before excavation?
• What system is not a type of bituminous pipe coating?
• Which practice helps control dust and sediment during trench work?
• What is a common method for testing a gas line prior to service?
• According to CALTRANS specifications, no pipe may project more than how many inches into a manhole?
• What is the role of mechanical joint restraints in ductile iron installations?
• When installing 60" concrete drain pipe, you apply a band approximately 7" wide and 1/2" thick. Then you smooth the band with a damp brush. You have proceeded:
• Which is a CORRECT statement about trenching?
• Which regulatory considerations are important for environmental protection during pipeline work in California?
• What is the minimum clearance above ground for galvanized pipe?
• Of the following, the heaviest copper pipe is:
• Which wage requirement may apply to California public works contracts?
• When installing filter fabric over and under perforated pipes to keep soil from plugging the holes, with adjacent rolls overlapped by 18 inches and gravel along the fabric edges to prevent wind, you have proceeded:
• Which of the following sets includes three common pipe materials used in potable water distribution that a C-34 contractor would install?
• For porous concrete pipe, which type of Portland cement may be used?
• PVC (PSM) sewer pipe markings must appear at intervals of no more than five feet. Which option best expresses this requirement?
• One method to minimize disruption to surface traffic during pipeline installation?
• Which of the following is a proper practice for solvent cement joints?
• Among compaction tests, which is oldest and most accurate?
• Which Portland cement designation may be used for porous concrete pipe?
• In the caulking example, to what depth should the joint be filled with lead?
• What is a 'service connection' in pipeline projects?