Group-I Group-II P Needle Vibrator 1 Concrete Pavement Q Shutter Vibrator 2 Pre-cast Concrete Unit R Surface Vibrator 3 Beam-Column Junction S Table Vibrator 4 Retaining Wall 5 Slip Forming
This solution clarifies the matching between vibrator types (Group I) and their construction applications (Group II).
Matches with: 3. Beam-Column Junction
Ideal for internal compaction in narrow, heavily reinforced areas like beam-column junctions.
Matches with: 4. Retaining Wall
Used externally on formwork (shutters), effective for consolidating concrete in walls, including retaining walls.
Matches with: 1. Concrete Pavement
Designed for external vibration on the concrete surface, suitable for slabs and pavements.
Matches with: 2. Pre-cast Concrete Unit
Utilized for pre-cast elements; vibrates moulds placed on a table for uniform compaction.
The correct pairings derived are:
| Group - I | Group - II |
| P Bracket | 1 Door |
| Q Baluster | 2 Dome |
| R Key stone | 3 Cornice |
| S Holdfast | 4 Arch |
| 5 Staircase |
| Group-I | Group-II |
| P Scaffolding | 1 To support unsafe structure |
| Q Formwork | 2 To support platforms for workmen and materials at raised height during construction |
| R Shoring | 3 Removal of water from pits |
| S Underpinning | 4 Mould for RCC Structure |
| 5 Strengthening the existing foundation |
The number of standard cement bags required to prepare 1400 kg of concrete in the ratio of 1:2:4 (mixed by weight batching) is _______________