3rd Industrial City, Jeddah, Kingdom of Saudi Arabia Aramco Vendor #10116102
+966 50 183 5126 sales@alfaalarabia.co العربية
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Home / Applications / Gravity Sewer / Design Guide: Piping for Gravity Sewer & Wastewater
APPLICATION GUIDE

Engineering Design Guide: Gravity Sewer & Wastewater

ALFA AL-ARABIA piping solutions for gravity sewer & wastewater in Saudi Arabia. Certified uPVC, CPVC & PVC conduit from Jeddah factory. Aramco #10116102.

Application Overview

Gravity Sewer & Wastewater is a critical infrastructure application across Saudi Arabia's 13 administrative regions. ALFA AL-ARABIA provides factory-certified thermoplastic piping systems specifically engineered for gravity sewer & wastewater in the Kingdom's demanding climate, soil, and operational conditions. All products are manufactured at our Jeddah factory (3rd Industrial City) under ISO 9001:2015 quality management and carry Saudi Aramco vendor approval (Code #10116102).

Recommended Products

DIN 19534 Gravity SewerDIN 19534, BS EN 1401-1, SASO 1394

Request Factory Quotation (RFQ)

Contact ALFA AL-ARABIA's sales engineering desk for project-specific pricing, delivery schedules, and Material Approval Request (MAR) documentation for Gravity Sewer & Wastewater.

Application Resources

OverviewProduct SelectionDesign GuideInstallation RequirementsFaq

Application depth — design: Gravity sewer & wastewater

Gravity sewer systems convey wastewater by slope without continuous pumping. Pipe stiffness, joint integrity, and bedding design control long-term performance under soil and traffic loads.

Key checks: minimum slopes for self-cleansing velocity, SN (ring stiffness) for burial depth and live load, manhole spacing, and chemical exposure classification. Use the project soil report and traffic loading—not a single default SN for all trenches.

Sewer pipelines fail when deflection, joint leakage, or chemical attack on cementitious materials is underestimated. Thermoplastic gravity sewer pipe is commonly chosen for corrosion resistance to domestic sewage and for consistent hydraulic smoothness.

Frequently asked questions

What information is needed to quote Design?

Standard, size/pressure class, jointing system, quantities/lengths, fittings list, delivery location, and any submittal/test requirements from the specification.

Can I substitute one pipe standard for another at the same nominal size?

Not without review. Dimensions, pressure classes, and test methods differ across standard families.

How do I contact ALFA for supply?

Use the RFQ form or contact +966 50 183 5126 / sales@alfaalarabia.co. Manufacturing is based at 3rd Industrial City, Jeddah, Kingdom of Saudi Arabia (Aramco Vendor #10116102).

Related resources

Batch-3 completion update: ALFA-specific order data must come from approved submittals—this section does not invent ratings or certifications.