A Structural Engineer’s Guide to Retaining Wall and Shoring System Approval in Dubai

Introduction

Retaining wall and shoring system approval in Dubai demands full compliance with Dubai Municipality regulations, certified engineering documentation, and geotechnical data prepared by licensed professionals. Whether you are planning deep excavations for a commercial tower or constructing reinforced concrete walls to manage level differences between adjacent plots, navigating the approval framework correctly determines whether your project moves forward on schedule or stalls in review queries.

This guide covers the complete approval process-from initial geotechnical investigation and system design through Dubai Municipality submission and permit issuance. It is written for developers, contractors, structural engineers, and property owners undertaking excavation projects across Dubai, including those in DDA-regulated zones. Topics outside this scope, such as Abu Dhabi-specific regulations or marine construction permits, are not addressed here.

Direct answer: Dubai Municipality requires structural calculations certified by a licensed geotechnical civil engineer, soil reports from EIAC-accredited laboratories, and detailed design drawings in DWF format for all retaining walls exceeding 1.5 meters in height and shoring systems for excavations deeper than 2 meters. Shoring is required for excavations deeper than 1.5 meters, and retaining wall and shoring designs must adhere to the Dubai Building Code and international standards.

By the end of this guide, you will:

An aerial view of a large urban construction site reveals deep excavations supported by various shoring systems and retaining wall structures, showcasing the intricate structural support systems necessary for maintaining stability in the challenging soil conditions. The scene highlights the excavation depth and the careful planning involved in infrastructure projects, emphasizing the importance of structural integrity and safety in urban development.

Understanding Dubai Municipality Approval Framework

The regulatory framework governing retaining wall and shoring system approval in Dubai is anchored in Administrative Resolution No. 37 of 2021, which amends the original Bylaw Concerning Building Requirements and Specifications (Resolution 125 of 2001). This resolution introduced critical updates to soil and foundation investigation, excavation procedures, shoring system design, and retaining wall requirements. Article 57 prescribes the technical standards (including Eurocode 7, BS 5930, BS 1377, BS 6031, and others) and mandates that all geotechnical work is performed by EIAC-accredited laboratories under the supervision of licensed geotechnical civil engineers.

Dubai requires a geotechnical investigation before designing retaining walls or shoring systems. Structural calculations must be produced using approved technical software, and all submissions must bear the licensed engineer’s registration number, discipline classification, and credentials per Dubai Municipality’s engineering consultancy qualification standards.

Temporary vs Permanent Shoring Systems Approvals

Shoring stabilizes soil during excavation to prevent collapses, and the approval requirements differ significantly based on whether a system is temporary or permanent.

Temporary shoring systems are designed to support deep excavations during construction phases. Temporary shoring systems are typically designed for a maximum service life of 2 years. They must be monitored for deflections, and safety measures for neighboring properties must be documented. Temporary shoring is used for excavations less than 4 meters deep, while deeper projects require progressively more robust temporary structures and documentation. Documents required for a shoring permit include a soil investigation report, calculations, and drawings.

Permanent retaining wall systems become part of the final structure. Permanent shoring systems integrate into final construction for long-term support. Permanent shoring requires licensed structural engineers and Dubai Municipality approval, with additional requirements for durability, waterproofing, and crack-width control (0.2 mm for elements exposed to water pressure, 0.3 mm for those not exposed). Retaining walls over 1.5 meters in height require strict structural vetting. For level changes of 1.50 m or more between a plot and an adjacent road or neighboring plot, retaining walls are mandatory.

The safety factor requirements also diverge: permanent structures need stability checks against sliding and overturning (safety factor ≥ 1.5), bearing capacity verification, and full waterproofing. Temporary shoring focuses on lateral displacement limits, anchor design, monitoring, and construction sequence safety.

Approval Authority and Jurisdictions

Dubai Municipality is the primary authority for most excavation and retaining wall projects within Dubai’s boundaries. However, projects located within specific development zones fall under the Dubai Development Authority (DDA), which follows similar but distinct checklists and circulars.

Approval for retaining walls and shoring systems is integrated into the building permit process. Other authorities-including Trakhees and port-related agencies-may require additional NOCs for infrastructure projects near utilities, water bodies, or roads. The contractor must obtain approvals from relevant authorities if anchors extend into neighboring land. Confirming your project’s jurisdiction before preparing documentation prevents wasted effort and submission to the wrong authority.

This image depicts a cross-section diagram of a deep basement excavation, showcasing soldier piles and tieback anchors positioned alongside a city street. The diagram illustrates the structural support systems necessary for maintaining stability and preventing soil collapse during deep excavations, emphasizing the importance of retaining wall systems and shoring methods in urban construction projects.

Dubai Municipality Submission Requirements

With the approval framework established, the next step is assembling the precise documentation package that Dubai Municipality or DDA requires. Incomplete or non-compliant submissions are the leading cause of delays in shoring and retaining wall approvals across UAE projects.

Engineering Design Documentation

All structural calculations must be certified by an engineer holding a valid Dubai Municipality license with the appropriate classification for retaining wall and shoring work. Under Administrative Resolution No. 253 of 2021, engineers must demonstrate the correct academic degree, minimum years of experience, competency exam results, and at least 72 hours per year of continuing professional development.

Design must comply with accepted codes: Eurocode 7 for geotechnical design, British Standards (BS 5930, BS 1377, BS 6031, BS EN 1536/7/8), ASTM, AASHTO, or equivalent American standards as specified in Article 57. Safety factors for sliding and overturning must be ≥ 1.5, and uplift safety factor ≥ 1.1 in dewatering scenarios. The design must also account for unplanned excavation depth-not less than 10% of the total retained height for cantilever walls, or 10% of the height below the lowest support for anchored walls, with a minimum of 0.5 m in all cases.

Load calculations must incorporate a minimum surcharge load of 20 kN/m² for roadsides and adjacent plots, increased when existing buildings impose additional loads, and must verify the system’s load capacity against those surcharge effects and neighboring structure influence. Regulatory bodies enforce strict documentation for shoring compliance.

Geotechnical Investigation Requirements for Deep Excavations

Soil reports must come from EIAC-accredited laboratories supervised by a licensed geotechnical engineer. As of January 1, 2026, per Circular 645, soil investigation reports cannot be submitted as standalone documents-they must be integrated into the related permit application (shoring, piling, or excavation). Deep excavations exceeding 3 meters depth require a Geotechnical Investigation Report.

The soil investigation must include:

Soil conditions, groundwater levels, and proximity to neighboring structures influence shoring type selection. Dewatering systems must be active if excavation dips below the local water table.

Technical Drawings and Specifications

Design drawings must conform to Circular 400 drawing submission standards: DWF format, A1 size, monochrome (black and white) except for perspectives and shaded areas. Sheet naming conventions must follow the prescribed format for each discipline (structural, geotechnical).

Drawings must include:

Dubai Municipality mandates approved shoring methods for high-risk excavations, and all submissions must demonstrate that the proposed construction sequence maintains structural stability at every phase.

Step-by-Step Approval Process

A fully compliant submission to DDA can be processed in approximately 3 working days. Dubai Municipality timelines vary but typically range from 2–6 weeks depending on system complexity, query responses, and whether independent peer review is triggered. Starting the approval process early-ideally concurrent with the building permit application-prevents critical-path delays.

Approval Process Workflow

Initiate the approval process as soon as the geotechnical investigation is commissioned, well before excavation is scheduled. Shoring systems must comply with UAE construction safety regulations from the earliest design phase. Before submission, address important considerations such as site constraints, neighboring assets, and temporary works sequencing to reduce redesign, safety issues, and approval delays.

  1. Commission geotechnical investigation from an EIAC-accredited laboratory with a licensed geotechnical engineer. Ensure boreholes cover the full influence zone, including areas near existing structures and utilities.

  2. Prepare structural design and load calculations using approved codes (Eurocode 7, BS, ACI) and certified software. Verify safety factors, soil pressure parameters, unplanned excavation allowances, and crack width limits.

  3. Develop technical drawings in DWF format per Circular 400 standards, with method statements detailing the construction sequence, monitoring plan, and emergency procedures.

  4. Obtain neighbor NOC if anchoring solutions extend into adjacent plots or if the shoring method affects neighboring properties. Independent geotechnical review is mandatory for projects with four or more basement levels or those in close proximity to water bodies.

  5. Submit the complete package through the Dubai Municipality online portal or DDA portal, including Form No. ZA-DC-F-103 soil report checklist, lab license, EIAC certificate, and the appointment letter from the owner/consultant/contractor.

  6. Respond to technical queries promptly-provide supplementary structural calculations, revised design drawings, or additional soil data as requested.

  7. Receive approved drawings with DM stamp. The approved shoring permit is valid for up to 4 years. Commence construction strictly per the approved design.

Mandatory inspections must be conducted at key stages during construction, such as after the first 2 meters of excavation. Excavation must be monitored continuously for lateral movement and settlement. The maximum permitted lateral displacement for shoring systems is strictly capped at 40 mm.

Approval Timeline and Cost Comparison

System Type

Typical Approval Timeline

Documentation Complexity

DDA Permit Fee Basis

Sheet pile (temporary)

2–3 weeks

Standard

AED 0.05/ft² BUA

Soldier piles & lagging

3–4 weeks

Moderate

AED 0.05/ft² BUA

Secant pile walls

4–6 weeks

Complex

AED 0.05/ft² BUA

Diaphragm walls

6–8 weeks

Very Complex

AED 0.05/ft² BUA

DDA shoring permit fees are calculated at AED 0.05 per ft² of built-up area, with renewal at AED 0.03 per ft² per month (capped at AED 6,000/month). Each transaction also incurs AED 10 Knowledge Dirham + AED 10 Innovation Dirham.

Selecting the appropriate system depends on excavation depth, soil conditions, groundwater levels, proximity to existing buildings, and project timeline. Sheet piles are ideal for temporary excavations in soft soils and are cost effective for shallow work. Soldier piles are economical for varying ground conditions and tight city excavations-soldier pile shoring uses H-steel beams (H beams) for soil retention. Secant piles create a watertight barrier for deep excavations and groundwater control, making them essential near water bodies. Diaphragm walls provide exceptional stiffness and watertightness for deep basements under high rise buildings. A contiguous pile system forms a soil-retaining wall for deep basements where watertightness is less critical.

Permanent shoring supports high-rise foundations in tight urban zones, while temporary shoring handles the construction phase before permanent wall support is established.

A construction site shows workers installing a reinforced concrete retaining wall, complete with visible rebar and formwork, at a deep excavation site. The scene highlights the importance of structural support systems and shoring methods to ensure stability and prevent soil collapse in challenging soil conditions.

Common Challenges and Solutions

Most approval delays stem from predictable, avoidable issues. Understanding these before submission saves weeks of back-and-forth with the reviewing authority.

Incomplete Geotechnical Data

Missing parameters-groundwater fluctuations, chemical content (sulfates, chlorides), insufficient borehole depth or spacing, or reports from non-EIAC accredited labs-trigger immediate rejection or queries. Utilities must be protected during excavation, requiring continuous monitoring and protective designs.

Solution: Engage an EIAC-accredited laboratory early and ensure the soil investigation covers the full influence zone, including the impact of adjacent structures and challenging soil conditions. Verify that the report includes all parameters required by Article 57: SPT values, shear resistance, K₀, chemical analysis, and groundwater monitoring referenced to DMD. Excavation permits are required for depths greater than 1.5 to 2.0 meters, so plan investigations accordingly.

Non-Compliant Design Codes

Using outdated codes, mixing incompatible standard families, or producing output from unapproved software results in rejection. Retaining wall and shoring designs must adhere to the Dubai Building Code and international standards without deviation.

Solution: Use only the accepted code families-Eurocode 7, British Standards (BS 5930, BS 1377, BS 6031, BS EN 1536/7/8), or American standards (ACI, AASHTO, ASTM)-as specified in Article 57. Confirm software compliance before beginning structural calculations. Account for unplanned excavation (minimum 0.5 m or 10% rule), surcharge loads (≥ 20 kN/m²), and anchor spacing (minimum 1.2 m with grout length 3–10 m).

Inadequate Safety and Structural Integrity Documentation

Projects near existing structures or involving deep foundations without monitoring plans, emergency procedures, or third-party reviews face scrutiny and delays. Shoring is mandatory for excavations deeper than 2.0 meters.

Solution: Include detailed monitoring plans specifying deflection measurement frequency, ground movement thresholds, and emergency response procedures. For projects with more than 3 basements or near water bodies, commission an independent peer review by a third-party geotechnical consultant before submission. Use watertight systems (diaphragm walls or secant pile walls with overlapping piles) for excavation support near water bodies to prevent soil collapse and protect structural integrity.

Missing Engineer Certification

Submissions without valid licensed structural or geotechnical engineer credentials, or those missing DM registration numbers and discipline classifications, are returned without review.

Solution: Verify that the certifying engineer holds a current Dubai Municipality license with classification appropriate for retaining wall and shoring projects. Under Resolution 253 of 2021, credentials require competency exam completion and 72 hours/year of continuing professional development. Dubai Municipality’s 2026 Memorandum of Cooperation with the Society of Engineers has further strengthened evaluation and standardization of engineer qualifications across construction sites.

Conclusion and Next Steps

Successful retaining wall and shoring system approval in Dubai depends on three pillars: comprehensive geotechnical data from accredited sources, compliant engineering design per Article 57 and accepted international codes, and submission by properly licensed professionals using the correct drawing and document formats. When these elements align, DDA permits can be issued in as few as 3 working days, and Dubai Municipality approvals proceed without disruptive queries.

Immediate next steps:

  1. Engage a licensed structural engineer with valid Dubai Municipality classification for retaining systems and deep excavations before the design phase begins

  2. Commission the geotechnical investigation from an EIAC-accredited laboratory, ensuring full coverage of soil profile, groundwater, chemical analysis, and adjacent structure influence

  3. Prepare a complete documentation package-structural calculations, DWF-format design drawings per Circular 400, method statements, and monitoring plans-before initiating submission

  4. Verify jurisdiction (Dubai Municipality vs. DDA vs. other authority) and confirm all required NOCs, particularly for anchoring solutions crossing plot boundaries

Related topics worth exploring include excavation permits, building permit integration (since shoring approval is now embedded in the broader permit process per Circular 645), dewatering system design for projects below the water table, and construction supervision requirements for deep basement projects in challenging soil conditions.

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