Etihad Rail Stage 2, Package 2D

Three trades in one rail package.

On Etihad Rail’s Stage 2, Package 2D, AZEMCO laid the GRP pipeline, installed the lighting and carried out the civil works that go with them, for the main contractor, CRCC NPC JV, with Jacobs as consultant.

What made it hard.

1. 01

   Many contractors, one corridor

   Track, structures, systems and utilities contractors worked along the same corridor, so access and working areas had to be agreed every week.

2. 02

   Live roads and existing services

   The works ran next to live roads and existing services, where a damaged cable or pipe would stop far more than our own work.

3. 03

   Three trades, one sequence

   Drainage, lighting and civil works depend on each other: the pipe trench, the lighting bases and the cable ducts had to follow one sequence.

What we did about each one.

1. Challenge 01Many contractors, one corridor
   Our response

   Access planned with the main contractor

   We planned our work fronts in the main contractor’s weekly coordination and kept to the areas we were given.

2. Challenge 02Live roads and existing services
   Our response

   Services found before digging

   Every excavation started from the utility drawings, permits and trial pits, so existing services were located before machines went in.

3. Challenge 03Three trades, one sequence
   Our response

   One crew plan for three trades

   We sequenced the GRP pipe laying, the civil works and the lighting as one plan, so each crew left the ground ready for the next.

From the first drawing to handover.

1. 01Permits and surveyUtility permits and drawings obtained, and services located by trial pits.
2. 02ExcavationTrenches and foundations opened in sequence along the corridor.
3. 03GRP pipelinePipes laid, jointed and tested, with manholes and backfill.
4. 04LightingBases, columns, cabling and fittings installed and tested.
5. 05HandoverAreas reinstated and handed back to the main contractor.

One package for Etihad Rail, followed by more: street lighting and civil works at Junction 3B, and the 132 kV and 11 kV diversions at E611 for DEWA and Etihad Rail.