In the high-rise landscape of Kuala Lumpur and Selangor, fire safety is a battle of air pressure. Positive Pressure Smoke Control Ducting is the active mechanical system responsible for injecting fresh air into escape routes—primarily stairwells and fire lobbies. By creating a high-pressure zone (a "pressure shield"), this ducting physically blocks toxic smoke from entering evacuation paths, keeping them tenable for occupants and emergency responders.
EKG M&E Sdn Bhd specializes in the engineering, installation, and balancing of these systems to ensure strict compliance with MS 1472, BOMBA standards, and the Uniform Building By-Laws (UBBL).
The system operates on the principle of fluid dynamics: air always moves from high pressure to low pressure. By keeping the escape route at a higher pressure than the fire floor, smoke is effectively "pushed back."
Because positive pressure ducts often travel through various fire compartments to reach the stairwell, they must be protected against external fire.
Integrity & Insulation: We encase heavy-gauge galvanized steel (G.I.) in BOMBA-approved fire-rated boards or high-density mineral wool wraps. This ensures the duct remains intact and the air inside stays cool, even if the adjacent floor is engulfed in flames.
Structural Stability: We utilize reinforced, fire-rated hanger systems that prevent the ductwork from buckling or collapsing under intense thermal stress.
Under MS 1472, the system must maintain a stable pressure differential.
Static Protection: When all fire doors are closed, the ducting must deliver enough air to maintain a 50 Pa (Pascal) difference between the stairwell and the floor area.
Dynamic Protection (1.0 m/s): When a door is opened, the system must instantly provide an air velocity of 1.0 m/s across the opening to "wash away" any incoming smoke.
As a BOMBA-Compliant M&E Specialist, EKG ensures your smoke control infrastructure supports building efficiency:
TNB Energy Efficiency (Leakage Control):
A leaky duct system forces the fan motor to work harder to hit the 50 Pa target. By ensuring a Class C Airtight installation, we allow your Variable Frequency Drive (VFD) to maintain safety standards at lower frequencies (Hz). This directly reduces your monthly TNB electricity bill during mandatory weekly testing.
EECA 2024 & Building Compliance:
Under the Energy Efficiency and Conservation Act (EECA) 2024, mechanical air transport must be optimized for minimal waste. Our precision-sealed fire ducts protect your Building Energy Index (BEI) and support green building certifications.
Prevention of "Door-Lock":
If the positive pressure is untuned, it can make fire doors impossible to open (exceeding the 110 N force limit). EKG utilizes calibrated discharge grilles and Barometric Relief Dampers to ensure the pressure is safe for all occupants to exit.
| Feature | Standard Ventilation Ducting | EKG Positive Pressure Ducting |
| Primary Goal | Occupant Comfort | Life Safety & Smoke Rejection |
| Pressure State | Neutral / Negative | Positive (Minimum 50 Pa) |
| Fire Rating | None | Mandatory (FRL 120/120/120) |
| Joint Sealing | Standard Mastic | Certified Intumescent Sealant |
| BOMBA Required | No | Mandatory for High-Rise FC |
Total 3D BIM Coordination: High-rise shafts are extremely congested. We utilize 3D modeling to route fire-rated ducts with zero "clashes" against sprinklers, wet risers, or structural beams.
Turnkey BOMBA Submission: We perform the mandatory Pressure Differential Test, Door Opening Force Test, and Anemometer Airflow Traverse required for your Fire Certificate (FC) application.
Strategic Regional Support: Based in Kuala Lumpur, we provide professional audits and technical proposals for shopping malls, data centers, and Grade-A office towers across Malaysia.
Is your building's escape route protected by a certified positive pressure shield? Contact EKG M&E Sdn Bhd today for a professional smoke control ducting audit and technical proposal.
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