This article provides estimated daily labour output for the installation of standard slab falsework systems using Titan, GASS, or Alshor Plus. The data covers slab heights ranging from 3 to 12 metres and assumes regular, uncomplicated layouts with minimal additional propping. Outputs are based on observed site data and interpolated figures, with adjustments for increased complexity and equipment requirements at greater heights.
Assumptions
– Systems in use: Titan, GASS, or Alshor Plus
– Slabs are standard in layout with no significant cutting or obstruction
– Gang are experienced, and working conditions are uninterrupted
– MEWPs (scissor lifts) are required above 4m, with larger models used beyond 9m
– At 12m height, three frames are stacked, increasing labour time significantly
– Tying down with chains or straps for lateral restraint is accounted for separately
Labour Performance at Reference Heights
At 4m, a gang of 6 operatives using 1 scissor lift can erect up to 140m² per day in ideal conditions. For 6m, the same crew may achieve 100–120m²/day depending on frame handling methods (crane vs MEWP). At 10m, with 7 operatives and 2 larger lifts, output drops to 50m²/day due to increased handling complexity. Beyond 10m, outputs reduce further due to triple-stacked frames and greater lift requirements.
Labour Output and Lateral Restrain Resources
The table below shows estimated daily output, crew composition, and time allowance for tying down the deck using chains or straps. These values are interpolated across slab heights between 3m and 12m.
| Slab Height (m) | Labour Output (m²/day) | Additional Tying Down \ Lateral restrain (days/150m²) | Gang Size | Labourers | Shuttering Carpenters |
| 3 | 140.0 | 0.5 | 6 | 2 | 4 |
| 4 | 140.0 | 0.5 | 6 | 2 | 4 |
| 5 | 125.0 | 0.5 | 6 | 2 | 4 |
| 6 | 110.0 | 0.5 | 6 | 2 | 4 |
| 7 | 95.0 | 0.75 | 7 | 2 | 5 |
| 8 | 80.0 | 0.75 | 7 | 2 | 5 |
| 9 | 65.0 | 0.75 | 7 | 2 | 5 |
| 10 | 50.0 | 1.0 | 7 | 2 | 5 |
| 11 | 40.0 | 1.5 | 7 | 2 | 5 |
| 12 | 30.0 | 2.0 | 7 | 2 | 5 |
As slab heights increase, labour efficiency decreases due to equipment handling, assembly complexity, and working height constraints. Planners should account not only for reduced daily outputs at higher levels but also for the significant time required to secure decks for lateral stability. These figures provide a useful baseline for programming and productivity analysis in standard RC frame projects.