QA/QC process
Pressure testing, flow meter testing and related field checks across the installed network.
01 Engineering & Design Approach
Designed by calculation, not by rule of thumb.
- 1.1Advanced design software support, including IRRICAD.
- 1.2Hydraulic calculations through software, based on the Hazen–Williams formula for head loss and velocity checks across the pipe network.
- 1.3Zoning as per water requirement and hydraulic feasibility.
- 1.4Pump and pipe sizing as per zone / station.
Deliverables
Site reportsDrawingsBOQs
Live hydraulic check
Hazen–Williams pipe calculator
The same relationship our design software applies across every pipe segment. Adjust the segment and watch head loss and velocity respond.
hf = 10.67 · L · Q1.852 / (C1.852 · D4.87)
Velocity0.00m/s
Head loss0.00m
Per 100 m0.00m
Pressure drop0.00bar
—
Indicative only. Velocity guidance uses a common design limit of ~1.5 m/s for irrigation mains; final sizing is carried out per project in design software.
02 Quality Assurance
Every line tested before it’s trusted.
Site & installation inspection
Inspection of soil and water quality, installed pipelines, electrical circuits and irrigation points.
Material inspection
Wall thickness / gauge and pressure rating on PVC pipes (as per ASTM standards) and on MS / SS components.
Testing & commissioning
Systems are tested and commissioned before handover, so performance is verified — not assumed.
03 Water Quality & Climate Design
Built for the water you have, and the heat you face.
Water source
Climate
Source
Water source assessed during site visit.
Filtration
Sediment and debris control.
Reverse osmosis
Salinity management where source quality requires it.
Storage
Hot-climate storage solutions.
Irrigation network
Zoned distribution to the field.
Filtration & salinity
Filtration for sediment and debris control; salinity management through RO where water source quality requires it.
Hot-climate management
Water management for hot climates, including storage solutions.
TSE compatible
Design compatibility with treated effluent (TSE) sources where required, meeting irrigation water quality standards.
04 Capacity for International Work
Mobilised on site. Supported remotely.
15+
Years of individual experience in the Saudi Arabia market across our leadership team.
Team mobilisation
On-site mobilisation as per project scope, with remote design and coordination support.
Procurement partners
Partners across the Middle East supporting reliable material sourcing and supply chain continuity.
05 Team & Qualifications
The people who sign off the design.
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Name
Role / Title
Credentials · Years—
Name
Role / Title
Credentials · Years—
Name
Role / Title
Credentials · Years—
Name
Role / Title
Credentials · Years05 Types of Irrigation Systems
The right system for every root zone.
Sprinkler Irrigation System
Distributes water through pressurised dispersal heads, providing uniform coverage.
Micro Irrigation Systems
Targets the root zones of plants, maximising efficiency.
Humidity Control Systems
Supports micro-climate management for sensitive crops, nurseries and greenhouses.
Sub-surface Irrigation Systems
Delivers water below the surface to encourage deep root growth.
Integrated Irrigation & Drainage
Manages both the supply and the excess of water, enhancing land stability.
06 Additional Landscape Services
Beyond the pipe network.
Water features
Enhance landscape aesthetics while providing water management.
Soil management
Control soil moisture capacity and improve substrate handling and vegetation establishment.
Take the technical profile with you.
Download the GRELA technical brochure (PDF, 17 pages): system types, specifications, application areas and maintenance.