Dubai Municipality Demolition Exam G+1 – Practical Engineering Knowledge

Demolition – Definition (Very Important)

Demolition is the controlled and systematic dismantling of a building or structure, carried out in a planned sequence to ensure structural stability, safety of workers, public protection, and protection of adjacent properties, in compliance with Dubai Municipality regulations.

Methods of Demolition (What You Must Know)

An engineer must clearly understand:

• What demolition is
• What demolition methods are available
• Which demolition methods are commonly used in Dubai

Typical methods include:

• Manual demolition
• Mechanical demolition
• Controlled / sequence-based demolition

The method selection depends on:

• Building type
• Location
• Adjoining structures
• Building card data
• Dubai Municipality rules

Types of Demolition (As per Dubai Municipality Engineering Section)

Dubai Municipality classifies demolition into two main types:

1️⃣ Full Demolition

Full demolition means complete demolition of all structures shown on the building card for that plot.

Example: A plot contains:

• Villa
• Service block
• Boundary walls (shown as fence in DM system)

If the scope is to demolish everything, then this is Full Demolition.

2️⃣ Partial Demolition

Partial demolition means only part of the structures shown on the building card are to be demolished, while other parts remain.

Example: Owner wants to:

• Demolish villa and service block
• Keep boundary walls

Since not all structures on the building card are demolished, this becomes Partial Demolition.

This is the common definition, and most engineers stop here. But this is not enough.

The Most Important Concept: Building Card

If you understand the building card, you can answer most demolition-related questions correctly.

What Is a Building Card?

A building card shows complete official building information, including:

• Building type
• Building name
• Completion details
• Measurements
• Area details
• Number of rooms
• Service blocks
• Fence (boundary walls) length

In Dubai Municipality terms, boundary walls are shown as “fence”, not boundary walls.

How Building Card Affects Demolition Type (Critical Knowledge)

Case 1: Simple Full Demolition

• Open the building card
• All structures shown are to be demolished ✅ Select Full Demolition

Case 2: Owner Wants to Keep Boundary Walls

• Building card shows villa + fence
• Scope is villa only
• Fence is to remain

❌ You cannot select full demolition ✅ This is Partial Demolition

Why? Because you are not demolishing the entire building card.

Case 3: Plot with Two Villas (Villa A & Villa B)

The plot contains:

• Villa A
• Villa B
• Service block
• Fence

Scope: demolish Villa A only for new construction.

Steps:

1. Identify Villa A building card
2. Open the building card and check:

Scenario A

• Building card shows only Villa A ✅ Select Full Demolition for Villa A

Scenario B

• Building card shows Villa A + service block / fence
• Scope is villa only

✅ Select Partial Demolition

Rule to remember:

If anything shown on the building card is not included in your scope, it is Partial Demolition.

If you understand this, you are already half an engineer 🙂

Mandatory NOCs for Demolition Permit

Demolition permits cannot proceed without mandatory utility clearances.

1️⃣ DEWA NOC (15 Days)

• Electrical disconnection
• Water disconnection
• Meter recovery

Why required? To eliminate live services and ensure site safety before demolition.

2️⃣ Etisalat NOC (15–20 Days)

• Telecommunication disconnection
• Device and cable recovery

Why required? To prevent damage to active telecom infrastructure and ensure worker safety.

3️⃣ RTA Drainage / ENOC NOC (2–7 Days)

• Confirms no main drainage, gas, or utility lines pass through or near the plot
• Certificate issued by Roads and Transport Authority (RTA)

Why required?

• To confirm no underground services exist
• Very important when demolishing entire plot including foundations
• Helps avoid damage to nearby or crossing infrastructure

For detailed information on the Dubai Municipality demolition permit procedure, please check the link https://www.zelzaldemolition.com/3020696_demolition-permit-process-in-dubai

Demolition Method Statement – G+1 Villa / Building

A typical approved demolition sequence includes:

1. Obtain all mandatory NOCs
2. Secure DM demolition permit
3. Remove dangerous and loose items from site
4. Install scaffolding and protective measures
5. Ensure pedestrian and adjacent property safety
6. Manually demolish attached areas first
7. Maintain minimum 3-meter clearance from neighboring plots before mechanical demolition (as per DM rules)

What Is an Attached Area?

An attached area means any part of our plot or structure that is directly connected to a neighboring plot or building.

This can include:

• Villa walls attached to neighboring villa
• Boundary walls (fence) touching adjacent plot
• Shared or zero-clearance structures

When a structure is attached, mechanical demolition is NOT allowed initially.

Why Attached Areas Must Be Demolished Manually

Attached areas must be demolished manually to avoid:

• Jerking or vibration transfer
• Structural cracks in neighboring buildings
• Damage to adjacent walls, slabs, or columns

If mechanical demolition is used directly:

• The vibration can travel to the neighboring structure
• This may cause serious damage and liability issues

That is why Dubai Municipality requires manual demolition first for attached areas.

What Is Manual Demolition?

Manual demolition means demolishing the structure using soft tools, such as:

• Small jack hammers
• Hand hammers
• Light electrical breakers

Heavy machinery is not used at this stage.

Purpose of Manual Demolition

• Controlled dismantling
• No vibration impact on adjacent buildings
• Maximum safety for nearby properties

Once the attached areas are completely removed and minimum clearance is achieved, then mechanical demolition is allowed.

Mechanical Demolition (After Clearance)

After manual demolition:

• Required clearance (minimum 3 meters, as per rules) is achieved
• Machines can be mobilized to site
• Remaining structure can be demolished mechanically

Dust Control & Debris Management (Very Important)

During demolition works:

• Water must be continuously sprayed to control dust
• Trucks transporting debris must be covered
• Debris must be removed continuously, not allowed to pile up

If debris is not removed regularly:

• Site becomes unsafe
• Dust increases
• Demolition becomes difficult and risky

Correct Demolition Sequence (Engineering Rule)

Demolition must always follow TOP TO DOWN sequence:

1. Slabs
2. Beams
3. Columns

❌ Never demolish columns first If columns are demolished directly:

• Entire structure may collapse
• High risk of accident and fatalities

This is basic but very important demolition engineering knowledge.

Basement Demolition – Dewatering and Shoring Awareness

Basement demolition involves significant risks due to groundwater, soil pressure, and nearby structures. All engineers and site personnel must understand that dewatering and shoring are critical safety requirements, not just theoretical concepts.

Key Safety Points

• Dewatering

  • Dewatering is the process of removing groundwater from the basement excavation area.

  • It prevents flooding, soil softening, base heave, and sudden collapse during demolition.

  • Dewatering systems must be installed and monitored before and throughout demolition works.

• Shoring

  • Shoring provides temporary support to soil and adjacent structures during demolition.

  • It prevents soil movement, wall collapse, and damage to nearby buildings, roads, or utilities.

  • Shoring must be designed, installed, and inspected by competent personnel before demolition begins.

Safety Responsibilities

• No basement demolition shall start without approved dewatering and shoring arrangements.

• Engineers must verify groundwater conditions and soil stability before work.

• Any signs of water ingress, soil movement, or shoring distress must be reported immediately.

• Continuous monitoring is required during demolition activities.

• Follow the approved method statement and risk assessment at all times.

Key Message

Dewatering and shoring are life-safety measures. As demolition engineers, we must apply this knowledge on site to protect workers, nearby structures, and the public.

Safety is everyone’s responsibility.

Safety Questions (Very Common in Exam)

You can expect 1 or 2 questions related to safety, such as:

Working at Height

• Proper access (scaffolding / platforms)
• Guardrails and edge protection

Personal Protective Equipment (PPE)

• Helmet
• Safety shoes
• Gloves
• High-visibility vest

Safety Belt / Harness

• Mandatory when working at height
• Proper anchorage point required
• Used to prevent fall accidents

Safety is not only for exam answers — it is for real site protection.

Final Words to Engineers

Everything written above is from practical demolition experience, not copied content.

 these points reflect actual Dubai Municipality site practice under Dubai Municipality regulations.

If you understand:

• Attached area
• Building card
• Manual vs mechanical demolition
• Correct demolition sequence
• Safety at site

👉 You don’t need to worry about the demolition exam.

Thank you, engineers. Best of luck.

Al zelzal Demolition works LLC