SIENA - Specialist Engineering Consultancy

Expertise

SIENA specialists use their expertise to design comprehensive, effective and feasible strategies and to create technical, practical and reliable solutions.

Fire and life safety

We are here to provide our clients with the best practical, logical and robust advice, drawing on our in-depth knowledge of various international and local codes and standards, proven expertise in large and mega-scale projects, and extensive experience working with diverse authorities.

Life safety is not optional. It is essential. We help you meet all minimum required life safety standards to ensure your project is compliant, secure, and resilient.

Our experienced Engineers work thoroughly to provide our Clients with the best fire protection design and suitable advice.

Our Specialists in this field adapt the appropriate systems in each project based on a full case evaluation.

Our engineers are experts in assessing and designing effective smoke control strategies to protect occupants from smoke exposure, support firefighters in their rescue and containment efforts, and minimize property damage.

We are proficient in adopting creative, flexible, and trusted solutions in order to deliver a comprehensive and coherent FLS strategy while preserving the Client’s vision and design intent.

We assess and develop the holistic fire safety for project sites, ensuring that fire department access and all fire protection provisions are fully aligned with international and local codes, and Civil Defence guidelines, to provide a compliant, safe, and well-coordinated site layout.

The right level of fire protection starts with accurate hazard and commodity classification. We help identify the fire and explosion risks associated with the materials stored, used, or processed in your facility, ensuring the correct level of protection and compliance from the start.

Our experts conduct well-curated risk assessments to identify unusual hazards and evaluate the risks they may pose, providing you with tailored recommendations for effective fire protection and regulatory compliance.

We have proven experience in these types of projects and understand that every existing building presents unique challenges. Our approach ensures each issue is addressed thoughtfully to minimize design changes and effectively navigate the restrictions and constraints specific to each project.

We manage all the coordination, submissions, and approvals related to Civil Defense or any other Authority Having Jurisdiction.

We offer comprehensive site services including supervision, detailed inspections of passive and active fire protection systems, thorough site investigations, and oversight through to final handover.

We provide expert witnessing of testing and commissioning activities, ensuring compliance, functionality, and alignment with project specifications and fire safety standards.

SIENA’s team is proficient in delivering comprehensive (FLS) design and review services for mission-critical data center facilities, ensuring alignment with applicable codes, standards, client requirements, and operational resilience objectives. Our expertise supports safe, compliant, and performance-driven environments through robust and practical engineering solutions.

Modeling AND simulation

We apply advanced modeling tools to predict and evaluate FLS performance under real-world conditions to deliver critical insights that inform design decisions, strengthen risk assessments, and facilitate regulatory approvals.

CFD Simulations

Perform advanced analysis of smoke spread, heat transfer, fire growth, temperature and thermal radiation, and suppression system performance to assess fire dynamics.

Thermal Comfort Analysis

Model airflow for natural and mechanical ventilation, optimise HVAC design for energy efficiency, solar gain, and draft control, and assess contaminant or pathogen dispersion in sensitive environments.

Pollutant Dispersion
Modeling

Simulate critical wind conditions at site, to enable assessment of how pollutants disperse under various scenarios, ensuring air quality is maintained and exposure to harmful emissions is minimized.

Pressurization & Ventilation

Design and validate stairwell and lobby pressurization systems, while analysing HVAC and airflow interactions under fire conditions to ensure smoke control, safe door operation, and tenable escape routes.

Wind & Microclimate
Studies

Evaluate pedestrian comfort, wind loading, and natural ventilation potential around and within buildings to enhance environmental performance.

Cooling Tower / Generator Room Simulation

Assess worst-case impacts and estimate maximum wet-bulb temperature increases at tower intakes under varying operating, weather, wind, and surrounding building conditions.

Tenability & Exposure

Assess toxic gas concentrations, heat exposure, and other life safety criteria to evaluate occupant survivability during fire scenarios.

Specialised Cooling
Applications

Perform CFD simulations for industrial processes, duct and chimney design, equipment cooling, and data center airflow management for efficiency and reliability.

Chiller Yard Simulation

Analyze airflow, heat rejection, and recirculation effects under varying operating and weather conditions. Provide insights to optimize layout, and ensure reliable operation of chillers.

Evacuation Modelling

Use Evacuation Modeling to simulate occupant movement and evacuation times, validating FLS strategies and optimizing egress design.

Studies for Data Centers

Leverage CFD to predict, plan and mitigate operational risks. Simulate airflow patterns and forecast temperature distributions across server racks, aisles, and cooling systems.

Transient CFD Analysis

Study complex, timedependent fluid and thermal behavior in HVAC, building physics, and energy systems. Provide actionable insights to optimize design and performance.

Acoustic Services

Working with our specialized acoustic consultant, we address all aspects of noise and sound control to deliver a fully compliant, high-performance project that meets international and local acoustic standards.

External Noises

Develop and propose effective strategies to minimize the impact of external noise sources on the project, such as aircraft routes, road traffic, and nearby technical facilities, ensuring compliance with acoustic standards and maintaining a comfortable indoor environment.

Internal Noises

Provide recommendations for controlling internal noise to create highly comfortable indoor environments, considering factors such as wall, door, and slab types, structure-borne sound, as well as noise generated from mechanical and electrical systems.

Rooms Acoustic

Specify the types, absorption coefficients, and percentage coverage of interior finishes to be applied in various areas of the project, ensuring that each space meets the required acoustic performance criteria.

Door Hardware Study

SIENA's Hardware Specialists provide a comprehensive door hardware design study aimed at selecting the most optimal door opening solutions.

Specifications Writing and Materials Assessment

Our Specialized Material Engineers utilize knowledge of construction products, materials, and methods to write Specifications for a variety of complex building types.

Bill of Quantities

Our BOQ services align the needs of both Design Consultants and Contractors, ensuring precision and reliability.

“Every day is a new learning opportunity that we must use well to elevate our knowledge and thrive in everything we do.”

Trainings and Seminars

Our training programs and seminars are designed to empower professionals with the knowledge and skills they need to excel in their fields. Led by NFPA® Authorized Training Providers and NFPA® Approved Instructors, these sessions combine global best practices with practical insights, ensuring participants gain both technical expertise and real-world application. Whether in large conferences or focused workshops, we create engaging learning experiences that foster growth, collaboration, and improvement.

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