CTI Industry Standards & Code Compliance 3

Question 1

ANSI A118.10 establishes performance requirements for which type of membrane used in tile installations?

Accepted Answer

Load-bearing (bonded) waterproof membranes for thin-set tile

Answer

Crack isolation membranes for concrete slabs

Answer

Uncoupling membranes for wood substrates

Answer

Vapor barriers beneath mortar beds

Question 2

The TCNA designation 'EJ171' is the industry guideline document specifically addressing which installation requirement?

Accepted Answer

Movement accommodation joints (expansion joints) in tile assemblies

Answer

Edge and transition trim specifications

Answer

Exterior joint waterproofing sealants

Answer

Environmental and jobsite safety standards

Question 3

Which ANSI standard covers the performance requirements for standard (portland cement-based) ceramic tile grouts?

Accepted Answer

ANSI A118.6

Answer

ANSI A118.7

Answer

ANSI A118.3

Answer

ANSI A118.9

Question 4

According to TCNA and industry standards, what is the minimum recommended grout joint width when installing rectified (precision-cut) tile?

Accepted Answer

1/16 inch

Answer

1/32 inch (virtually gapless)

Answer

3/16 inch

Answer

1/4 inch

Question 5

Per ANSI A108.02, what is the maximum allowable variation in floor substrate flatness for standard tile installations?

Accepted Answer

1/4 inch in 10 feet

Answer

1/8 inch in 10 feet

Answer

3/16 inch in 10 feet

Answer

3/8 inch in 10 feet

Question 6

ANSI A118.3 specifies performance requirements for which type of tile setting and grouting materials?

Accepted Answer

Chemical-resistant, water-cleanable epoxy materials

Answer

Polymer-modified latex mortars

Answer

Organic mastic adhesives for dry areas

Answer

Furan resin grouts for industrial use

Question 7

For large-format tiles with any edge longer than 15 inches, ANSI A108.02 requires the substrate to be flat within which tolerance?

Accepted Answer

1/8 inch in 10 feet with no more than 1/16 inch in 24 inches

Answer

1/4 inch in 10 feet with no more than 1/16 inch in 12 inches

Answer

3/16 inch in 10 feet with no more than 1/8 inch in 24 inches

Answer

1/4 inch in 10 feet with no more than 1/8 inch in 24 inches