Lesson 4: Choosing and Installing the Correct Masonry Fastener Flashcards
What does the term “base material” refer to with respect to masonry fasteners?
Concrete, Brick, or Block
Concrete is called “green concrete” for how many days?
28 Days (Later)
When fastening a heavy item to brick, what is the most important step?
Make sure the brick is anchored to the main structure.
What do mechanical type masonry fasteners use to obtain their holding values?
Friction
What force do mechanical anchors use to create their holding strength?
Expansion
A drop-in anchor requires the use of a(n) ? .
Setting Tool
What style of anchor would be considered a male type fastener?
D. b or c .A sleeve anchor, and a wedge anchor
What style of anchor would be considered a female type fastener?
D. a or b (a drop in anchor or a single expansion anchor)
What type of anchor comes in zinc-plated, hot-dipped galvanized, and stainless steel?
Wedge anchor
How important is the diameter of the hole in the base material when installing a masonry fastener?
Critically Important.
What do all male concrete fasteners (except for the concrete screw) require the hole to equal?
The anchor diameter
What hole diameter does a female anchor require?
Larger than the anchor designated diameter
What information is required to determine the diameter of fastener to be used?
Weight of the object, fixture hole size, specifications
What factor is not important when determining the length of anchor to be used?
Thread Length
What is the rule of thumb for the spacing of concrete fasteners?
10 Anchor diameters
What is the rule of thumb for distance from an unsupported edge?
5 anchor diameters
The 1/4-inch self-tapping screw requires what size bit?
3/16”
The 3/16-inch self-tapping screw requires what size bit?
5/32”
What information is most important when determining what fastener to use?
Weight of object, thickness of material, embedment depth
What type of fastener is best suited in a dry environment?
Zinc-Plated
316 Stainless Steel is best suited for use in what type of environment?
Submerged in water/chemicals
Hot-dipped galvanized wedge anchors are designed to be used in what type of environment?
Moist
What must be used to drill a hole in the masonry when installing a masonry fastener?
C. A and B. (ANSI standard carbide bit, Hammer drill)
How much deeper than the anchor being installed should the hole be drilled?
1/4” to 1/2” Deeper
Before the anchor is placed in the hole, workers should ? .
Clean the hole out of all dust and debris.
When drilling and installing a concrete fastener, it is important to ? .
Use safety goggles and earplugs.
