Question

True/False: The following are the correct order of steps in placing a concrete slab;

1. Excavate top/loose soil.
2. Install formwork.
3. Place the concrete.
4. Screed the concrete.
5. Trowel the concrete.
6. Float the concrete.

Answer 1

False. The sequence provided is not entirely accurate; for instance, floating should be done before troweling. The correct process includes excavation, formwork, reinforcement, placement, screeding, floating, troweling, and curing.

Step-by-step explanation:

False. The correct order of steps in placing a concrete slab involves a more nuanced process than the one listed in the question. Here is the correct general sequence of operations when placing a concrete slab:

1. Excavate top/loose soil.
2. Install formwork to outline the space and contain the concrete.
3. Place reinforcement if necessary (steel bars or mesh).
4. Pour or place the concrete into the formwork.
5. Screed the concrete to level the surface.
6. Float the concrete to create a smooth finish and prepare it for troweling.
7. Trowel the concrete for a fine finish (if required).
8. Allow the concrete to cure before removing the formwork and subjecting to any loading.

This process ensures proper structural integrity and surface quality of the concrete slab. Notably, the question lists floating after troweling, which is incorrect as floating is normally done before troweling to prepare the surface.