| Item | Specification |
|---|---|
| Grade tolerance | ±15 mm (GPS-verified) |
| Slope from building | Min. 2% for first 1.8 m (OBC) |
| Lawn drainage slope | Min. 1.5% |
| Topsoil depth | Min. 100 mm (150 mm rec.) |
| Topsoil organic content | 4–15% (OPSS) |
| New sod watering | 25 mm/week for first 3 weeks |
| Hydroseed rate | 4–5 kg / 100 m² |
| Broadcast seed rate | 5–7 kg / 100 m² |
| Erosion stabilization | Within 30 days of final grading |
| Item | Specification |
|---|---|
| Paver base (pedestrian) | 200 mm Gran. A + 25 mm sand |
| Paver base (vehicular) | 300 mm Gran. A + 25 mm sand |
| Paver thickness | 60 mm ped. / 80 mm vehicular |
| Joint width | 2–3 mm polymeric sand |
| Edge restraint spikes | 300 mm o.c. |
| Compaction target | 98% Standard Proctor |
| Concrete (exterior) | 30 MPa, 5–8% air-entrained |
| Control joints | Max 3 m or 2.5× slab width |
| Finish | Medium broom ⊥ to travel |
| Layer | Material | Thickness |
|---|---|---|
| Subbase | Granular B (Type II) | 150 mm |
| Base | Granular A | 300 mm |
| Base course | HL-8 (coarse) | 50 mm |
| Surface course | HL-3 (fine) | 40 mm |
| Total structure | 540 mm | |
| Item | Requirement |
|---|---|
| Sidewalk width | Min. 1 500 mm (1 800–2 400 rec.) |
| Running slope (max) | 5% (1:20) |
| Cross slope (max) | 2% (1:50) |
| TWSIs | At curb ramps & vehicular areas |
| Type A space (van) | 3 400 mm + 1 500 mm aisle |
| Type B space (std.) | 2 400 mm + 1 500 mm aisle |
| Sign height | Min. 1 500 mm above grade |