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65 Cards in this Set
- Front
- Back
What tool is used to finish mortar joints |
Sled Runner joint |
|
What blades are used to cut masonry |
Diamond or Carbide |
|
What is the unit for modular bricks |
4" |
|
Non modular brick sizes |
vary from region to region |
|
All masonry units that are ____ % are considered solid |
75% |
|
Brick durability is affected by (4) things |
- Heat - Wetting - Drying - Soluble Salts |
|
Efflorescence is caused by |
Soluble salts being carried to the surface by evaporation |
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What brick bond is the weakest |
Stack |
|
What type of mortar joints are effective in resisting rain penetration |
Concave or Tooled |
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What is the most popular mortar joint |
Concave |
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What tile has a high degree of mechanical perfection |
(FTX) Unglazed Facing |
|
How much does a CMU weigh |
40 lbs |
|
Actual Size of a CMU |
7 5/8" x 7 5/8" x 15 5/8" |
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Which block is stronger a 2 core block or 3 core block |
2 core |
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What block is used when reinforcing bars must align in the core holes |
2 core |
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Masonry glass block joints are typically ___" on all sides |
1/4" |
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What type of stone works best in sills |
Limestone |
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Basic ingredients of Mortar |
- Portland Cement - Hydrated Lime - Sand |
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Hydrated Lime is ______ that has been slaked before packaging |
quicklime |
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_______ means that quicklime has been formed into a putty by combining it with water |
Slacked |
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How can you retemper mortar |
adding water |
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Mortar should be discarded ______ after mixing |
2.5 hours |
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The comprehensive strength of mortar increases as _______ |
cement content increases |
|
What is the most significant property of hardened mortar |
Bond Strength (also most difficult to predict) |
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What type of mortar is used for unreinforced masonry below grade |
Type M |
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What type of mortar is recommended for unreinforced masonry where max Flexural strength is required |
Sype S |
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When wind speeds exceed 80 mph, Type ____ Mortar should be used |
S |
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Three types of Ties |
- Corrugated - Rectangular - Z |
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All reinforcing rods or bars used in masonry walls must have ____ " of mortar coverage |
5/8" |
|
A strap anchor is used to |
connect a partition wall to a bearing wall |
|
What tool can be used to cut brick when the cut edge will be hidden by mortar |
Brick Hammer |
|
A corner pole is also known as a |
story pole |
|
A corner pole is used to |
insure the height of each course of block or brick |
|
Wall ties in the mortar should be placed |
5/8" from either edge of the masonry unit |
|
To clean brick use a diluted solution of |
Hydrochloric Acid |
|
When sandblasting masonry the pressure should be |
60-100 psf |
|
The most common air space for a cavity wall is |
2" |
|
What ties are typically used in residential veneer construction |
Corrugated |
|
Which direction should the wide flange face in a block wall |
At the top |
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What tool is used to make sure that the mason's line does not sag |
Trig |
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How far should a mason's line be held away from the block or brick |
1/16" |
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A full mortar bed is furrowed with a |
Trowel |
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A _____ is used to ensure a good bond between the footing and the bed course |
A full mortar bed |
|
What diameter bar is used for a 3/8" concave mortar joint |
5/8"
|
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Control joints should be ____________ after the mortar has been raked out to a depth of ___" |
sealed with a caulking compound, 3/4" |
|
How far should you parge the wall from the footing above the finished grade |
6" |
|
What are walls that are self-supported called |
Curtain Walls |
|
An expansion joint on the outside wythe must be spaced no further than |
50' apart |
|
Jack Arch is relatively weak and should be supported by steel if the opening is over |
2' wide |
|
Sheets of welded wire reinforcing are overlapped at least ______ |
One full stay plus 2" |
|
Concrete wearing surfaces (Terrazzon) are generally how thick |
2" thick |
|
Tuckpointing definition |
Filling in cut out or defective mortar joints in masonry with fresh mortar |
|
Nominal dimension of a modular brick is equal to |
the manufactured dimensions plus the thickness of the mortar joint |
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Main ingredient in mortar is |
Portland cement |
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Standard nonmodular brick requires ___ cu. ft. of mortar per 100 sq. ft. of wall |
5.8 |
|
CMU requires ____ cu. ft. of mortar per 100 sq. ft. of wall |
6 |
|
Tuckpointing should be done with what type of mortar |
Type N prehydrated |
|
Minimum comprehensive strength of grout should be |
2000 psi |
|
3/8 Rebar is known as |
#3, (4/8 known as #4) |
|
Strap anchors dimensions are |
1-4" x 1 1/4" x 30" |
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When the air gap (cavity) is less than 2", the wall is considered |
Veneered |
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One masonry unit of an arch is called a |
Voussoir |
|
Rise of a Segmented arch should be |
1/12, 1/10, 1/8, 1/6 of the span |
|
Minimum rise of ___" per ___ ' in an arch |
1", 1' |
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Rebar should be lapped ____ bar diameters but not less than ____" |
24, 12" |