Module Six Masonry Units and Installation Techniques

Splitter

The device used to cut masonry units by exerting tremendous force through gearing and hydraulic power is called a________

Closure unit

The last brick to fill a course

3/4 inch

According to ACI the thickness of a mortar joint cannot exceed________

Laying Forward

Buttering a brick before placing it in a wall is referred to as________

Bond

Laying out masonry units to establish spacing.

Racking

Shortening each course of masonry by half a unit so it is shorter than the course below it

Range

To align the masonry unit or wall along the plane or face of the wall

Tail

To check the spacing of head joints by checking the diagonal edges of the courses on a lead or corner

Plumb

The most effective way of holding a brick is________

20 feet

A control joint in concrete masonry walls replaces a standard mortar joint approximately every________

Return

A corner in a structure or lead

Clouds of dust

A disadvantage to using a power saw to dry cut block or brick is________

Corner lead

A lead built at a corner in which each course of masonry is shorter than the course below it

Pattern Bond

A purely decorative bond formed by masonry units and mortar joints on the face of a surface is called a________

Hurricane strap

A special kind of anchor that is used to tie the frame to the foundation

Frogged

A style of brick in which a depression in the bedding surface of a brick lightens its weight

Course Height

After laying a brick, the first check is always________

Veneer Tie

An anchor that is used to tie veneer to masonry structures

Structural backing

Anchors used with brick veneers are attached to________

Scored

Before cutting a masonry unit, the line on which the cut will be made must be________

3/8 inch

Concrete brick is designed to be laid with a __________ mortar joint

Expansion

Cracking in brick construction is caused by________

Allow moisture in a wall to exit through a weep system

Flashing is used in masonry construction to ________

Reduce Weight

Holes are formed into cored brick to________

Slack to the line

Masonry units set too far away from the mason's line

Stack bond Pattern

On a loadbearing wall, the wythe must be bonded to its backing with rigid steel ties when using the________

Rain from splashing dirt and mortar on wall

Stand scaffold boards on edge at end of day to prevent________

25 percent

The amount of surface area on an uncored block that has holes extending through it is equal to less than________

Pounds per square inch

The compressive strength of block is measured in________

Block require a different spreading technique

The main difference between laying block corners and brick corners________

18 inches

The maximum distance that anchors should be spaced on center vertically is________

Compressive Strength

The measure of how much weight a CMU can support without collapsing (measured in psi)

Lintel

The support beam over an opening such as a window or door (AKA Header)

Buttering

The term used to describe applying mortar to block is ________

Freestanding and Portable

The two models of masonry saws available are________

Spread

To lay a bed of mortar in a line for a course of masonry units

Crowd the line

To touch the mason's line or to place a masonry unit too close to the line

In your hand

When cutting a concrete masonry unit with a masonry hammer, the block should NOT be placed________

Place the scored block on top of another block so that the waste part hangs free

When cutting with the mason's hammer, once the masonry unit has been scored,________

Exceeds 1 & 1/2 minutes

When measuring the absorption rate of brick using the medicine-dropper test, the brick does not need to be wetted if the time for absorption________

At a 45 degree downward angle, several units away from the corner

When setting up a line using line pins, the line pin should be driven securely into the lead joint

The brick next to it

When the latest brick has been placed, align it with________

Grease pencil

When using a wet-cut saw to cut masonry units, mark the cutting lines using a________

300 psi

When using high-pressure water washing to clean brick, the BIA recommends that nozzle pressures not exceed________

12 inches

When using pressure-washing equipment to clean block, the NCMA recommends that the distance from the tip to the masonry should be at least________