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Millwright Level 1 > Explosive Actuated Tools > Flashcards

Explosive Actuated Tools Flashcards

1
Q

power load requiring a crimped end

A

low velocity

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2
Q

what weight is required to fire a low velocity tool

A

weight of tool and 5 lbs

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3
Q

power load made of brass and numbered 1-6

A

low velocity

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4
Q

power load made of nickel and numbered 7-12

A

high velocity

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5
Q

what is the power load color from weakest to strongest

A 
grey
brown
green
yellow
red
purple
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6
Q

what are 3 fastener types for actuated tools

A

drive pins
threaded studs
drive pin assemblies

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7
Q

heavy duty fastener are anything over

A

3/16 or 4.83mm

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8
Q

fastener designed to pierce and pin materials to concrete or steel

A

drive pin

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9
Q

fastener designed for a shank to be driven into base material with a threaded portion to which an object be attached with a nut

A

threaded stud

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10
Q

fastener designed pre mounted with washer, bracket or fixture

A

drive pin assembly

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11
Q

what are 3 applied loads for actuated tool

A

tension
shear
bending

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12
Q

applied load force to the fastener perpendicular to the base material surface

A

tension load

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13
Q

applied force to the fastener perpendicular to the fastener

A

shear load

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14
Q

applied force at a distance from the surface of the base material,creating a lever type action of the fastener

A

bending load

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15
Q

at 7 days new concrete should have what strength

A

65-75% strength

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16
Q

what often happens to concrete surfaces when fasteners are driven in

A

spall- fracturing of base material, does not reduce strength

17
Q

the distance concrete fasteners should be spaced from an edge and from the next

A

3” or 75 mm edge

3” or 75 mm from another fastener

18
Q

a) fasteners penetration in concrete

b) no more than ____ of the base material

A

a) 6-8 times shank diameter

b) no more than 1/3 base material

19
Q

fasteners spacing for steel

a) weld
b) edge
c) another fastener

A

a) 3/16 or 5mm
b) 1/2 or 15mm
c) 2” or 50mm

20
Q

fastener penetration in steel

A

1/4 or 6mm

Millwright Level 1 (17 decks)

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