020303f Commercial Fasteners and Anchors

Question 1

Describe how concrete or masonry nails differ from common nails.

Answer 1

Concrete or masonry nails are hardened for use in fastening lumber to concrete or masonry work. They have large shanks and are usually grooved or twisted.

Question 2

Describe a rigid insulation nail.

Answer 2

They have large plastic or metal washer prevents the head of the nail from pulling through the soft insulation materials.

Question 3

Describe how driver and lag screws differ from standard wood screws.

Answer 3

The driver or lag screw has a very coarse thread with either a square or a hex head and can be driven or turned into pre-drilled holes. Can hold heavier members than typical wood screws.

Question 4

What three things are used to designate screws?

Answer 4

Gauge, length and type of head.

Question 5

List three hollow wall anchors.

Answer 5

Screw in
Toggle bolt
Screw-in toggle
Plastic/nylon toggle 
Milky bolt
Plastic screw

Question 6

What anchor incorporates a sleeve wedged against the sides of a pre-drilled hole as the nut is tightened?

Answer 6

Wedge/sleeve anchor

Question 7

__________ anchors allow the use of simple ready Rod or rebar as the fastener.

Answer 7

Adhesive anchors

Question 8

Describe the adhesive anchoring system.

Answer 8

Adhesive from an adhesive caulking gun, which mixes the two parts automatically. Rebar, ready Rod or special fasteners can then be inserted.

Question 9

With adhesive anchoring, the use of a ______ eliminates problems of mess and spillage.

Answer 9

Capsule

Question 10

What must be used with adhesive to anchor to a hollow base?

Answer 10

Tube-shaped screens are used to contain the adhesive as it is injected; these allow enough adhesive to seep out and make good contact with the sides of the drilled hole.

Question 11

The distance from the surface to the installed end of an anchor is called ________ _________.

Answer 11

Embedment depth

Question 12

What 3 types of loads that can be imposed on a fastener?

Answer 12

1. Shear
2. Tension
3. Combination or oblique loads. I

Question 13

A power load is called a ______ in regards to explosive-actuated tools. I’m

Answer 13

Cartridge

Question 14

Power loads with crimped ends must be used with ____ velocity tools.

Answer 14

Low-velocity

Question 15

EAT fasteners should be ____ from edges and _____ apart in concrete. How about metal???

Answer 15

2”, 3”

1/4”, 1”

Question 16

What is included in the projection of an actor bolt?

Answer 16

Twice the full thickness of the nut, the thickness of steel plate and grout shimming space.

Question 17

Mechanical anchors should not be installed in concrete that is less than ___ days old.

Answer 17

7