Download 2025 C-54 CERAMIC AND MOSAIC TILE CONTRACTORS LICENSE EXAM | 270 Qs&As|A+GRADE and more Exams Construction Procedures in PDF only on Docsity!
2025 C-54 CERAMIC AND MOSAIC TILE
CONTRACTORS LICENSE EXAM | 270 QUESTIONS
AND ANSWERS|LATEST UPDATE|ALREADY
GRADED A+| CERAMIC AND MOSAIC TILE
CONTRACTORS C-54 LICENSE EXAM 2025- 2026
A 90° corner is specified when installing a sink, the deck lath should be held away from the wall: 1 inches A tile cove is specified when installing a sink, the deck lath should be held away from the wall: 3 inches A 90° corner is specified when installing a sink, the cabinet should be (-)wider than the sink from front to back. 2 inches A tile cove is specified when installing a sink, the cabinet should be (-) wider than the sink from front 4 inches The layout should start with (-) , on a straight- run drain board with a diagonal deck:
Full diagonals at the cap and at the sink On a straight-run drainboard with a straight deck, layout should start with: A full tile on the cap When installing a pullman without using trim shapes, how large of a joint should be left around it? 1/16 inch The v-cap is (-) backed with mortar. Fully What is the maximum depth of the mortar, when using a v-cap apron? 1 inch When using v-cap apron, what is the minimum depth of mortar? 3/4 in The bottom of v-cap should be set (-) in a countertop from finish floor:
What should you have the tile-setter do after they have completed one wall and were about to start the other? Wait 48 hours before starting the opposite (back) side of the same wall You have two apprentices to clean a tile floor; one has an acid product and the other has a stiff brush.you should tell them: To use neutral soap What do you not do when you are in charge of cleaning on a tile floor job? As floor is being tiled, stack all items in a neat pile Mike had a concrete floor that he wanted to tile. He cleaned the floor and laid tile with thin set base. Is this correct? No it should have a mortar bed Corners in a shower receptor should be reinforced by (-) before installing tile. 50 lb. Tear-strength woven glass fiber webbing hot mopped in place and extending 4 inches in all directions from each corner
The best method of waterproofing a shower is: 3 layers of 15 lb. Felt with hot mopping The total thickness of the mortar bed should never be less than (-) at any point when you are installing shower receptors. 1 3/4 inches Organic mastic should not be used for: Tile in a shower What is the minimum drain for a shower floor? 1/4 inch per foot What mortar mix ratio should be used for a shower (pipe) wall? 1: When the plug is removed for a tile-lined shower receptor: All of the test water must drain out by gravity through the weep holes
The width of an expansion joint in mosaic tile should be: 1/4 inch The box screed method is used for mosaic tile installations to: Insure uniform thickness for mosaics: spread a fine mortar on the back of the sheets and rod off lightly Which of the following is not correct, when bending wire in a mortar ceiling? Bend the edges down on the wall You should apply mortar to ceilings by: Scratch deeply in two directions Should be especially careful about adding (-) to mortar used for ceiling applications. Water Where the ceiling joins the wall:
The ceiling lap should float freely When applying scratch coat to a ceiling, how long do you wait before applying the second coat? Overnight When back-buttering a ceiling, what thickness do you observe? 1/16 inch Adjusting tile after it is applied to a ceiling, you can expеct: To break the bond The dash coat should consist of (-) after sandblasting a concrete wall. Consist of 1 part portland cement: 1.5 parts graded sharp fine sand To rough sandblast an exterior concrete wall: Each nozzle requires about 300 cfm of air at a minimum of 90 psi. Blasting is begun at the top, and the nozzle is directed from side-to-side at a distance of about 24 inches from the surface
Type i or ii (-) is used to set ceramic tile in roman tubs: Portland cement mortar A roman bath should be water-tested: At least 24 hours Water testing roman tubs (after hot mopping) should occur: Before tiling Maximum deflection of a wood floor system under a roman tub is (-) of the span under heavy load (dead + live loads). 1/ The minimum pitch toward the weep holes in the sub-drain of a roman tub is: 1/2 inch
(-) water is used in preparing the mortar for roman tubs: Potable What should cement mortar for a tiled tub be mixed with? A waterproofing admixture
- The next step is (-) when you check a roman tub after the scratch coat has been laid. Fill with water to overflow and wait for 24 hours The minimum width of expansion joint in quarry tile is: 1/4 inch When using a quarry rack begin by: Setting a chalk line parallel to the longest wall When using a quarry rack: The rack must always be square
Which of the following provides for the best bond for tile? Immediate placement of tile on freshly combed mortar On concrete surfaces on which exterior tile is laid, the maximum spacing allowed for expansion joints is: 20 feet A bond is: Adherence of one material to another Regarding thin-set installation, which of the following is incorrect? Soak tiles in water before application Which of the following is not correct? Additional welt of tiles will help provide a bond on mortar that has too long after combing and the bond of tile on re-combed mortar
Where you must till to bring the floor level to the proper grade to receive the mortar bed, use: 1 part portland cement: 3 parts sand : 4 parts coarse aggregate (-) is not a waterproofing admixture Thl dust Metal lath on gypsum sheathing should be all except one of the following: It should be lapped at least 1" A deflection standard of 1/360, the span means that a wall 8 feet long must not be able to bow more than: 1/4in: 8x12=96/360=0. When installing tile veneer over steel or wood stud construction, the maximum deflection under heavy load must not exceed (-) of a span. 1/ The (-) is responsible for the "housekeeping safety" measures and the safety of workers while assembling a structure.
Before grouting wall tile, how long after setting should you wait? 48 hours Which is true when waterproofing membranes of counter tops? Use 0.004 polyethylene Which of the following would be incorrect if you were setting reinforcing mesh for mortar over a concrete floor? Crimp ends so they stand up What is the vertical face of a step called? Riser Avoid (-) when using flammable solvents. Electric tools Prior to installation, tile should be (-) due to the porosity of ceramic veneer. Soaked in clean water
What do you call a inch steel rod used for reinforcing a mortar bed in tile terminology? Dried A story pole can be used to: Determine the size of end cuts Where should you get water when you are in the middle of a project and have lost access to water? The nearest tap In preparing to reinstall tile, you find that one of the old tile from a concrete block wall is still attached to it. This tells you that: It had a good bond When using glass mesh sheeting, what is not true? Use neither diamond mesh nor 3/8" rib lath
If you are planning to use cement mortar, what is the maximum allowable variation in the scratch coat? 1/8 inch in 8 feet The maximum allowable variation in a plaster wall on which tile is installed is: 1/8 inch in 8 feet The purpose of a float strip is to: Be able to screed easier Expansion joints is the responsibility of the: Tile-setter How should shrinkage mesh be installed, when tiling over wood surfaces using the mortar method? Without nailing and not butted tightly against walls or other vertical surfaces
How many inches should building paper be lapped, when tiling over wood surfaces using the mortar method? 3 What is the proper sequence, when preparing a cinderblock wall for tile? No preparation needed orher than a 1/2 in mortar bed For countertops, what mortar mix ratio should be used? 1:5 a part portland cement, 5 parts washed sand For countertops, what mortar mix ratio should be used? Beating block What is the joint size for a tile 2-3/16 inch square or smaller? 1/16 to 1/8 inch The correct treatment when installing mortar felt behind the counter for a back splash is: Fold tightly into corners
