Standard Construction Specifications Part 2 Abu Dhabi Extra Quality

After first significant rainfall in 2020, road pavement showed longitudinal cracking and settlement adjacent to manholes.

Found that the contractor used imported dune sand (low PI) instead of selected granular fill for backfilling deep drainage trenches. SCS Part 2 Clause 6.19 specifically prohibits dune sand for trench backfill below roads. standard construction specifications part 2 abu dhabi

Mandatory excavation of 2.2km of road, removal of 12,000m³ of non-compliant sand, refill with 80/20 mix (aggregate/sand), and recompaction. Direct cost: 4.2 million AED. Schedule delay: 7 months. After first significant rainfall in 2020, road pavement