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FOUNDATION DESIGN · SAUDI ARABIA

Foundation Design in Saudi Arabia

SBC-304 + ACI 318-19 foundation design for Saudi desert and coastal soil conditions — with Dammam tower and Buwaid project references — from senior engineer Mubashir, one business day response.

Foundation Design for Saudi Arabia Projects

Foundation design in Saudi Arabia requires both code knowledge and genuine understanding of the Kingdom's varied subsurface conditions. The Eastern Province has its own soil profile — cemented carbonate caliche over deep sands and gravels, with coastal sabkha and marine deposits near Dammam and Jubail. Riyadh's Najd Plateau sits on consolidated sedimentary rock with shallow rock in many areas, enabling high bearing capacity shallow foundations. The Asir mountains in the southwest have deep residual soils over weathered rock requiring different foundation approaches entirely. A structural engineer working on Saudi foundations cannot apply generic solutions — site-specific soil data and Saudi code compliance under SBC-304 are both essential.

Sixteens Consultancy Services has designed foundations for Saudi structures. The Dammam entertainment tower required a foundation system capable of transferring large overturning moments from a 150 ft steel tower into the Eastern Province subsurface. The Buwaid amusement supports project involved foundation design for steel support structures in another Saudi Arabia location. Both projects demonstrate our ability to work with Saudi soil conditions and deliver SBC-304 + ACI 318-19 compliant foundation designs.

Code Framework for Saudi Foundation Design

Saudi Arabia foundation design operates under:

  • SBC-304 — Saudi Building Code: Soils and Foundations. The governing standard for all foundation design in the Kingdom. It incorporates ACI 318-19 by reference for concrete element design. SBC-304 requires: geotechnical investigation based on building footprint and depth-to-bearing-stratum, minimum foundation depths (typically 0.9 m in non-expansive soils), special treatment requirements for expansive soils (found in parts of Riyadh and Jizan), sulfate-bearing soil mitigation for Eastern Province coastal sites, and pile testing requirements when driven or bored piles are specified.
  • ACI 318-19 — Building Code Requirements for Structural Concrete. Chapter 15 governs footing design: bearing area sizing, flexural reinforcement (ACI 318-19 Section 15.4), one-way and two-way punching shear (Section 22.6), and development length of footing reinforcement. Chapter 17 (anchoring to concrete) governs anchor bolt design for column base plates — the critical foundation-to-superstructure interface in steel tower design.
  • ASCE 7-22 / SBC-301 load combinations — Saudi foundation design uses SBC-301 factored load combinations that parallel ASCE 7 LRFD combinations: 1.2D + 1.6L, 1.2D + 1.0W + 0.5L (or 0.7W for some combinations), and 0.9D + 1.0W (the uplift governing combination for windward tower foundation design). Seismic combination 1.2D + 1.0E + 0.5L is applied per SBC-301 Chapter 12 seismic load combinations.

SCS Track Record — Dammam Tower and Buwaid Project

The Dammam entertainment tower foundation was designed to transfer the tower's wind and seismic overturning moments into the Eastern Province subsurface under SBC-304 + ACI 318-19 provisions. The governing design condition was the uplift/overturning check: under maximum SBC-301 wind load, the windward foundation bearing pressure must not produce net tension (where a spread footing is used) or the pile capacity must accommodate the tension demand (where piles are required). This check drives the footing plan dimensions more than the gravity load bearing pressure in most tall tower foundation designs. The Buwaid amusement supports project provided additional Saudi foundation experience at a different site with different soil conditions within the Kingdom.

How to Engage SCS for Foundation Design in Saudi Arabia

Email [email protected] with: project location (city and nearest municipality), column loads and geometry, any available geotechnical investigation report, applicable SBC edition and local authority requirements, and target Saudi Building Authority submission date. Mubashir responds within one business day. WhatsApp at +974 6004 4913. Deliverables: SBC-304 + ACI 318-19 foundation calculations, footing sizing and reinforcement, anchor bolt design, foundation drawings — formatted for Saudi Building Authority review.

— FREQUENTLY ASKED QUESTIONS

Foundation Design in Saudi Arabia
— Common Questions

What soil conditions are typical in the Dammam / Eastern Province area?

Eastern Province subsurface typically includes near-surface aeolian sands, caliche (cemented carbonate gravel) at 1–4 m depth with allowable bearing capacity of 300–600 kPa, and deeper gravel deposits. Coastal strips near Dammam and Jubail have marine clay and sabkha requiring corrosion protection in concrete. Caliche is the preferred bearing stratum for spread footings in the Dammam area.

How does SBC-304 relate to ACI 318 for Saudi foundation design?

SBC-304 is the governing Saudi foundation standard, incorporating ACI 318-19 by reference for concrete element design. SBC-304 adds Saudi-specific requirements for geotechnical investigation, minimum foundation depths, expansive soil treatment, and sulfate mitigation for Eastern Province coastal sites. Both SBC-304 and ACI 318-19 must be satisfied simultaneously for complete Saudi compliance.

What foundation system was used for the Dammam entertainment tower?

The Dammam tower foundation was designed to transfer large wind and seismic overturning moments into the Eastern Province subsurface. The governing check was the uplift/overturning condition under maximum wind: the windward footing bearing pressure must not produce net tension, or anchor bolts must carry tension demands into the ground via pile friction or end bearing. This overturning check typically controls the footing plan dimensions more than gravity bearing pressure for tall tower foundations.