Modern Masonry

Question 1

What is a sled runner?

Answer 1

Used by masons to finish mortar joints

Question 2

What is used to cut masonry?

Answer 2

Industrial diamond or carbide tipped blades

Question 3

Definition of building brick?

Answer 3

common brick are used chiefly as structural material where durability and strength are more important than appearance

Question 4

When is it appropriate to use Grade SW Brick?

Answer 4

brick highly resistant to frost

Question 5

When is it appropriate to use Grade MW Brick?

Answer 5

where there may be exposure to temperatures below freezing, but where not likely to be permeated with water

Question 6

Grade NW Brick?

Answer 6

is brick designed to be used as a backup on interior masonry

Question 7

When do you use Facing brick?

Answer 7

used on exposed surfaces where appearance is an important consideration

Question 8

What type of brick are identical to facing brick but have a larger core area?

Answer 8

Hollow Brick

Question 9

Pedestrian and Light Traffic Paving Brick?

Answer 9

intended for use as a paving material to support pedestrian and light vehicular traffic

Question 10

What is Heavy Vehicular Paving Brick intended for?

Answer 10

intended for heavy traffic and equipment applications

Question 11

units with a glaze fused to the body; used as a facing brick?

Answer 11

Ceramic Glazed Brick & Glazed Brick Single Fired

Question 12

Thin brick?

Answer 12

thin brick veneer units are fired clay with normal face dimensions but a reduced thickness

Question 13

What is brick durability affected by?

Answer 13

heat, wetting, drying, and soluble salts

Question 14

What is efflorescence?

Answer 14

on masonry walls this is caused by soluble salts in wet brick being carried to the surface as water evaporates

Question 15

Running bonds in masonry is what?

Answer 15

consists of all stretchers and is used largely in cavity walls and veneer construction

Question 16

common bond or American bond?

Answer 16

a variation of the running bond. It has course of full-length headers at regular intervals generally every fifth to seventh course, to provide structural bonding as well as pattern

Question 17

What are Flemish bonds in masonry?

Answer 17

alternates courses of stretchers and headers. headers in alternate courses are centered over the stretchers in the course between them

Question 18

What are English bonds in masonry?

Answer 18

made of alternate courses of headers and stretchers. the headers are centered on the stretchers and joint between the stretchers in all courses are aligned vertically

Question 19

Block or Stack Bond

Answer 19

is purely a pattern bond. all vertical joints are aligned. There is no overlapping of units. The block or the stack bond is the weakest part

Question 20

How is a mortar joint very effective in resisting rain penetration?

Answer 20

concaved and tooled mortar joints

Question 21

Most popular mortar joint?

Answer 21

concave mortar joint

Question 22

FTX Unglazed Facing Tile is known for?

Answer 22

a high degree of mechanical perfection

Question 23

How much does a 8x8x16 CMA (sand and gravel) weigh?

Answer 23

40 lbs

Question 24

Actual size of a 8x8x16 CMU is?

Answer 24

7 5/8” x 7 5/8” x 15 5/8”

Question 25

which block is typically stronger? two core block or three?

Answer 25

two core

Question 26

When do you typically use two core block?

Answer 26

when reinforcing bars must align in the core holes

Question 27

Masonry glass block joints are typically ____ on all sides?

Answer 27

1/4" on all sides

Question 28

What is an excellent sill material that can be used on exterior masonry walls? WHy?

Answer 28

Limestone; one piece ensures better protection against water leakage

Question 29

Basic mortar ingredients include?

Answer 29

Portland cement, hydrated lime and sand

Question 30

re-tempering mortar is done how?

Answer 30

add water to make more workable

Question 31

Mortar should be discarded after how many hours after mixing?

Answer 31

2.5 hours after

Question 32

How do you make mortar stronger?

Answer 32

Compressive strength of mortar increases as cement content is increased

Question 33

What is most significant property of hardened mortar but also most difficult to predict?

Answer 33

Bong strength

Question 34

When do you use Type M Mortar?

Answer 34

used for reinforced masonry below grade and in contact with earth; foundations, retaining walls, walks, sewers, and manholes

Question 35

When do you use Type S Mortar?

Answer 35

STRENGTH WIND used for reinforced masonry where maximum flexural (bending) strength is required AND/OR when wind speed exceed 80 mph

Question 36

Three types of ties: | Unit ties?

Answer 36

rectangular anchors used in cavity wall construction

Question 37

When do you use Z ties?

Answer 37

in concrete block wall construction

Question 38

When do you use a Corrugated tie?

Answer 38

used to anchor brick veneer facing walls to studs

Question 39

All reinforcing rods or bars used in masonry walls must have how much mortar coverage?

Answer 39

5/8 of an inch

Question 40

When is a strap anchor used?

Answer 40

to connect a partition wall to a bearing wall

Question 41

cutting brick with a brick hammer is used when?

Answer 41

when the cut edge will be hidden by the mortar

Question 42

What is used to ensure height of each course or block or brick?

Answer 42

a corner pole or a story pole

Question 43

Where do you place wall ties in the mortar?

Answer 43

5/8 of an inch from either edge of the masonry unit

Question 44

How do you clean brick?

Answer 44

use diluted Hydrochloric Acid (HCL)

Question 45

When sand blasting a masonry wall the pressure should be?

Answer 45

60-100 p.s.f

Question 46

Most common air-space for a cavity wall?

Answer 46

2 inches

Question 47

corrugated metal ties: when are they used?

Answer 47

used in residential veneer construction to anchor the veneer to frame or masonry backing

Question 48

Position Block (CMU's) in a wall with the wide flange on the top to provide what?

Answer 48

a wider space for the bed joint

Question 49

What do you use to make sure that the mason's line does not sag?

Answer 49

a Trig

Question 50

How far do you hold a mason's line away from the block or brick?

Answer 50

1/16"

Question 51

When is a full mortar bed used?

Answer 51

to ensure a good bond between the footing and the bed course

Question 52

A full mortar bed is furrowed with?

Answer 52

a trowel

Question 53

What size diameter bar is usually used in what size concave mortar joint?

Answer 53

a 5/8" diameter bar is usually used for a 3/8" concave mortar joint

Question 54

What should be sealed with caulking compound after the mortar has been raked out to a depth of 3/4"?

Answer 54

control joints

Question 55

How far do you parge the wall from the footing to above the finish grade line?

Answer 55

6"

Question 56

What is a curtain wall in masonry?

Answer 56

a self-supported (non-bearing) wall

Question 57

an expansion joint on the outside wythe must be spaced no farther then ___ ft apart?

Answer 57

50

Question 58

Materials used for lintels?

Answer 58

concrete, cast stone, stone, steel

Question 59

Jack Arch Construction: is relatively weak and should be supported by steel if the opening is over __ ft wide?

Answer 59

2 ft wide

Question 60

What are the overlap requirements for Sheets of welded wire?

Answer 60

AT LEAST ONE FULL STAY SPACING PLUS 2 INCHES

Question 61

concrete wearing surface like terazzo toppings on outdoor slabs are generally how thick?

Answer 61

1/2 thick

Question 62

Tuckpointing is what?

Answer 62

filling in cut out or defective mortar joints in masonry with fresh mortar

Question 63

what is a stretcher brick?

Answer 63

bricks that lie with its longest side parallel to the face of the work.

Question 64

what is a header brick?

Answer 64

brickwork in which all the bricks are laid as headers is referred to as header course.

Question 65

what is a bed joint?

Answer 65

the bed is the horizontal layer of mortar where brick or stone units are laid.