Chilled water piping in Al Nahda (Sharjah) 

Chilled water piping in Al Nahda (Sharjah): local context

Al Nahda in Sharjah is a dense residential district right on the Dubai border, lined with 20–30 storey apartment towers on podium car parks, hotel apartments and street-level retail, mostly built from the 2000s onward. It is one of the main commuter neighbourhoods for people working in Dubai. Manolia completed the MEP works for two residential towers (G+5P+23/24) and for a hotel apartment building here.

• Twin-tower and podium projects need car park ventilation across several podium levels, smoke clearance and sprinkler coverage coordinated with ramps, transfer slabs and tight floor-to-floor heights.
• SEWA governs power and water connections, so substation rooms, water tanks and metering follow SEWA requirements, which differ from DEWA practice just across the border.
• Peak-hour congestion at the Dubai–Sharjah crossings is heavy, so deliveries and manpower movements are planned around rush hours.

Building types we serve in Al Nahda (Sharjah)

For malls and retail centres, the work concentrates on large-volume air handling, tenant-ready chilled water or refrigerant capacity, smoke extraction for atriums and car parks and food-court exhaust.

Scope of work

• Pipe sizing review against design flows and allowable pressure drop, with velocity checks to limit noise in risers and erosion at fittings.
• Underground pre-insulated chilled-water networks between buildings, with trench coordination, leak detection wiring where specified and protected crossings.
• Hydrostatic pressure testing of each section before insulation, followed by full system test before connection to the plant.
• Closed-cell insulation with vapour barrier, aluminium cladding outdoors and labelling with flow direction.

Systems we install

• Pressure independent control valves at fan coils and AHUs
• Expansion vessels and pressurisation units

UAE site and climate challenges

• Large temperature differences between installation in summer heat and cold operating conditions cause expansion and contraction, so anchors, guides and loops are positioned to protect long risers, branch take-offs and equipment connections.
• Riser shafts open to outdoor air during construction fill with dust and humidity, so insulation is installed only after shafts are closed and pipes are clean and dry, avoiding trapped moisture under the vapour barrier.
• Steel versus pre-insulated or alternative pipe systems: welded or grooved steel remains standard for risers and plant rooms, while pre-insulated pipe suits buried routes between buildings and saves on-site insulation labour.

Relevant Manolia projects

Frequently asked questions