Concrete is generally placed on a:
Correct Answer: A. Form work
📚 Detailed Explanation: Concrete Is Placed on Formwork
Why A (Form work) is correct: Formwork (also called shuttering) is the temporary framework, mould, or enclosure built to hold fresh (plastic) concrete in its desired shape until it hardens and gains sufficient strength. It is the standard term used in construction for the surface on and into which concrete is poured and compacted.
What Is Formwork?
| Aspect | Detail |
|---|---|
| Definition | Temporary structure that holds fresh concrete in shape while it cures |
| Materials used | Timber, plywood, steel, aluminium, fiberglass, fabric |
| Purpose | Defines shape, contains concrete, supports weight until strength develops |
| Cost | Typically 20–25% of total concrete construction cost |
| Watertightness | Timber formwork uses tongue-and-groove joints to prevent cement slurry leakage |
Why the Other Options Are Wrong
| Option | Verdict | Reason |
|---|---|---|
| A. Form work | Correct | Standard term for the mould/shuttering that receives fresh concrete |
| B. Stand | Wrong | Not a construction term for this purpose |
| C. Mould | Partly correct | Used for precast elements in factories, not for in-situ construction; “formwork” is the correct term for site work |
| D. Platform | Wrong | A platform is a working surface for labourers, not a mould for concrete |
- Formwork = the correct answer; it is the fundamental temporary structure for in-situ concrete construction.
- Shuttering = another name for formwork, used interchangeably in Indian construction practice.