Red Seal Carpenter Practice Exam

For a T-bar ceiling system, how many 600 mm x 1 200mm (2' x 4') ceiling tiles would be required in a room measuring 4 670 mm x 5 800 mm (14' 7" x 18' 4")?

1. 38

2. 40

3. 42

4. 44

The correct answer is: 38

To determine the number of 600 mm x 1,200 mm (2' x 4') ceiling tiles required for the room size of 4,670 mm x 5,800 mm, we start by calculating the total area of the room and then the area of a single tile. First, the area of the room can be calculated as follows: 1. Area of the room = length x width = 4,670 mm x 5,800 mm = 27,086,000 mm². 2. Area of one tile = length x width = 600 mm x 1,200 mm = 720,000 mm². Now, to find out how many tiles are needed, we divide the area of the room by the area of one tile: 3. Number of tiles = Area of the room / Area of one tile = 27,086,000 mm² ÷ 720,000 mm² ≈ 37.5. Since you cannot have a fraction of a tile, you round up to the nearest whole number, which gives you 38 tiles. However, it’s important to consider that when applying tiles, you may also account for additional factors such as cuts, waste, or any