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52 Cards in this Set
- Front
- Back
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Where must a fastening be made in a concrete block? |
Into the solid part of the block, and at least 75 mm (3") away from the edge of the block. |
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Will a fastener penetrate concrete with a rating of 60 mPa (8500 psi)? |
Yes, but that is the maximum. |
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What is the minimum thickness of steel a fastener may be used on? |
5mm(3/16")
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What penetration should the tool operator look for when setting a fastener into steel? |
12 mm(1/2")
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What is the minimum distance you may set a fastener from a torch cut or weld? |
50 mm(2")
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What types of concrete, or concrete products, should not be fastened into with powder actuated tools? |
-Precast concrete containing pre-stressed cables.
-Soft concrete with a rating under 9.653 mPa (1400 psi) -Hard concrete with a rating over 58.607 mPa (8500 psi) |
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What is the rule about spalled areas? |
Never attempt to fasten into a spalled area. |
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If the pin will penetrate 32 mm ( 1 1/4") into concrete, what should be the minimum thickness of the concrete for a powder-actuated fastening? |
96 mm(33/4") |
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List five materials that cannot be fastened onto concrete or steel. |
Brick, ceramic tile, vitrified tile, glass, asbestos
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What methods can be used to prevent spalling? |
Use spall guard or stop, reduce shank diameter or length, reduce cartridge strength or run fastener through a washer. |
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Which type of mortar joint must be avoided? |
Vertical joint
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What is the minimum thickness of concrete a fastener may be used on? |
76mm (3")
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When using a low-velocity powder actuated tool, how close to the edge of concrete can you drive a fastener? |
76mm (3")
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How close to the edge of steel can you set a fastener? |
13mm (1/2") |
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What level of power load should be used for the first test fastening? |
The lowest cartridge strength available for the tool, or the lowest power level possible if the tool is adjustable for level strength. |
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What is the loading sequence for single–shot tools?
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Load fastener before loading cartridge
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True or false. All semi–automatic tools have a fastener magazine.
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False
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On a semi–automatic tool with power level adjustment is it possible to increase the level past the loaded cartridge strength?
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No
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For semi–automatic tools with power level adjustment, what cartridge strengths are commonly used?
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Red, purple
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How are strip cartridges loaded into a low–velocity, semi–automatic
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Inserted through base of tool handle
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At about what speed does the fastener move in a low–velocity, powder–actuated tool?
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Less than 100 m (325') per second
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At about what speed does the fastener move when a high–velocity tool is used?
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150 m(500') to 460 m ( 1500') per-second
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What type of material are the cartridge cases for low–velocity tools?
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Brass
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Describe the impact propulsion system used in low–velocity tools.
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there is a gap between the piston and the fastener. The fastener is against the work surface, and the piston is back against the charge
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Describe the co–acting propulsion system used in low–velocity tools
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only the piston and the fastener are in contact.There is a gap between these parts and the work surface.
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Describe the contact propulsion system used in low–velocity tools.
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, the work surface, the fastener, and the piston are all in contact with each other.
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What cartridge color produces the second strongest impact?
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Red
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Why are wadded cartridges not used in low–velocity tools?
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The wads would clog the vent ports.
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What are the purposes of painting the ends of crimped cartridges?
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To identify the power level and waterproof the cartridge.
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Name the colors of powder–actuated cartridges, from strongest to weakest.
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Purple (strongest)
Red Yellow Green Brown Grey(weakest) |
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What is different between the fasteners used for concrete and steel?
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Fasteners for concrete have a smooth shank, fasteners for steel are knurled.
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About how much penetration is required for fastening into steel?
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Approximately 3/16"(5mm) to l/2"(13mm).
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About how much penetration is required for fastening into concrete?
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Approximately 1"(25mm).
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True or false. The guidance washer of a fastener must fit snugly into the barrel of the powder–actuated tool.
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True
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Which tool parts may require changing if you switch fastener types or lengths?
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Pistons, piston guides and/or fastener guides.
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True or false. All fasteners can be used with different makes and models of low velocity tools.
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False
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Which tool part or parts are designed to break down or deform in order to avoid further damage to a low–velocity tool?
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Stop ring or shear clip
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Which low–velocity propulsion method provides the highest amount of driving force with the least recoil?
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Co–acting
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State the types of personal protection equipment that must be worn when using powder–actuated tools.
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Approved eye and hearing protection, as well as appropriate safety headgear and safety footwear.
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What are the three components of a powder–actuated fastening system?
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The tool, power loads and fasteners
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State two restrictions regarding atmospheric conditions when using powder–actuated tools
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The tool shall not be used in areas where atmospheric conditions could contribute to an explosion or fire.
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True or false. Low–velocity, powder –actuated tools must be used whenever possible.
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True
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True or false. A powder–actuated tool can be used to drive a fastener into cast iron, brick, and tile.
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False
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What is the proper method of storage for tool system cartridges?
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-Store cartridges in a safe, dry place, out of the reach of other people.
-Power loads of different power levels and types must be kept in different compartments or containers |
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what point may a powder–actuated tool be loaded?
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Load the tool only when preparing it for immediate use and unload at once if work is interrupted.
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In what position should the powder–actuated tool be held when it is being used to fire a fastener?
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Perpendicular (at a right angle) to the work surface.
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In the event of a misfire, what is the minimum length of time that the tool must be held against the work surface?
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5 seconds –recommended 30 seconds
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What shall the operator do when a powder–actuated tool is found to be defective?
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Tag the tool "defective" and hand it in for repair by a qualified person.
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What are the potential problems associated with the use of non approved fasteners and cartridges?
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Fasteners and cartridges not approved for use by the tool manufacturer may result in jamming, misfires and fastener failures, which are all potential safety hazards.
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When must the tool be unloaded?
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Always unload the tool:
- At the end of the firing operation - Before changing tool parts -Before cleaning and servicing |
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What identification marks are required for a powder–actuated tool and its accessories?
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A powder–actuated tool and accessories must be marked with the manufacturer' s name or trademark, model and serial number.
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Under what circumstances may a fastener be driven into easily penetrated or thin materials?
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A powder–actuated tool fastener may only be driven into easily penetrated or thin materials or materials of unknown resistance if the receiving material is backed by a material that will prevent the fastener from passing completely through.
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