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WorksheetsConstructions C
Total questions: 39
Worksheet time: 30mins
Soils with little to no shear resistance to sliding are considered
Frictional
Plastic
Cohesive
Stable
[ANSWER TBD]
The Michigan Energy code required R-value for Below Grade Walls is?
R5
R7.5
R10
No Requirement
[ANSWER TBD]
A sealant that is listed as +100/-50% can perform as follows?
extend 50% of installed width, compress 100% of installed width
compress 50% of installed width, extend 100% of installed width
compress 50-100% of installed width, extend 50-100% of installed width
None of the Above
Backer rods are used in the installation of sealant joints to?
I. provide a secondary waterproof layer
II. Control the depth of the sealant
III. prevent three-sided adhesion
IV. aide in sealant tooling
V. attain proper sealant joint profile
II and III
II only
II, III, IV, V
I, II, III, IV, V
[ANSWER TBD]
A sealant installed near the lowest temperature will generally always experience compression of the joint width and sealant
True
False
[ANSWER TBD]
Cohesive sealant failures are often caused by installing the sealant too thick.
True
False
[ANSWER TBD]
Clay is often considered to be stable and, therefore, predictable and good support for buildings.
True
False
[ANSWER TBD]
Damproofing cannot prevent the passage of water under conditions of hydrostatic pressure.
True
False
[ANSWER TBD]
Sealant Joints control the flow of
Water
Vapor
Air
A and B
All of the Above
Sealants cannot make up for poor design
True
False
To achieve proper design, Sealants must be
designed for anticipated movements
correctly selected for the application
properly installed
all of the above
What ASTM designation refers to the correct sealant selection for a correct application?
ASTM C1472
ASTM C1299
ASTM C1193
none of the above
Which if the following is the correct order for installing a Sealant?
A• Substrate cleaning and priming
B• Backer rod and sealant application
C• Sealant tooling
C, A, B
B, C, A
A, C, B
none of the above
Naturally occurring bitumen and asphalt materials have been widely accepted as sealants for many centuries
True
False
The Tower of Babel was reportedly built with mortar and tar or pitch as a sealant.
True
False
Prior to the 1900’s most sealants evolved from fossil-fuel related substances
True
False
Which of the following is NOT a disadvantage of Water -Based Sealants such as latex or acryllic?
Slow Cure
relatively high flammability
Shrinkage--up to 50%
limited joint stability
Poor UV stability
Which of the following is the amount of joint movement for solvent-based sealants such as butyl or acrylic?
± 7%
± 25%
±50
+50, -100
Which of the following is the amount of joint movement for chemically curing sealants such as polyurethane, or polysulfide?
± 7%
± 25%
±50
+50, -100
Which of the following is NOT an aspect of the material selection criteria for sealant?
- Accommodation of anticipated joint movement.
- Adhesion to the substrates.
- Durable - Endure the anticipated exposure.
- Compatibility with adjacent materials.
- History of application success.
1
4
3 and 5
none of the above
What ASTM industry guideline refers to the proper establishment of sealant joint size?
ASTM C1472
ASTM C1193
ASTM C920
ASTM C1299
What ASTM industry guideline refers to the use of cold liquid-applied sealants for joint sealing applications?
ASTM C1472
ASTM C1193
ASTM C920
ASTM C1299
Joint movements occur before sealant installation, some occur after, and some both before and after sealant installation.
True
False
What is the hottest expected surface temperature of red face brick?
90 F
75 F
154 F
101 F
Which if the following is the amount of expansion of Sealant that undergoes a 114 F temperature swing between the hottest and coldest points of the year?
3/64"
5/64"
7/64"
9/64"
Which if the following is the amount of irreversible moisture growth of a fired clay product?
3/32"
5/32"
7/32"
1/32"
The frost line occurs at the level of earth
where the building foundation should be located
below which the soil does not freeze
where the water table extends
where the soil bearing is affected by weather
A Joint near the lowest temperature will always face compression
true
false
A Joint near the highest temperature will always face extension
true
false
Minimum sealant bond depth is
1/8"
3/8"
1/4"
3/4"
Minimum sealant width at the joint is 3/8" inches
true
false
Porous substrate types require a primer
true
false
The most common substrate failure is due to loss of adhesion
true
false
Which of the following is true about backer rods?
Asphalt-based materials are the most common used for backer rods
Backer Rods must be 15% larger than the joint width
Poked holes in Backer tape causes bubbling in substrate and subsequent failure
Backer Rods continue to serve their purpose throughout the lifespan of the construction
Ideal shape for applying sealant is HOURGLASS
true
false
According to the lecture, which should not determine the selection and specification of a project's sealants?
Chemical Properties
Physical Properties
Service life
Cost
Mixing different sealants together ensures success in joints that may face a variety of adversity in a particular project
true
false
Only Specify SWRI Validated Sealants
true
false
Soil stability is based on BEARING CAPACITY
true
false
