Rw ≥ 58 dB EN ISO 10140 (Acoustics) & EN 13501-2 (Fire)

Acoustic Insulation & Fire Compartmentation

Air-cavity separated double steel framing delivering zero cross-apartment noise transmission alongside REI 90 to REI 120 fire resistance certified by European testing standards.

Technical Subsystem Keywords: # acoustic party double wall # Rw 58 dB soundproofing # REI 90 REI 120 fire resistance # A1 non-combustible linings

Key Engineering & Performance Metrics

Sound Reduction Rw ≥ 58 dB (Party Walls) / Ln,w ≤ 45 dB (Floors)
Fire Rating REI 90 / REI 120 (EN 13501-2)
Lining Board A1 non-combustible gypsum fiberboard (15mm × 2)
Smoke Seal Intumescent firestop collars on all MEP risers
Structural Mechanics

System Architecture & Structural Mechanics

One inherent acoustic advantage of volumetric modular building is the natural presence of double party walls and double floor-ceiling sandwiches between adjacent dwellings. By deliberately introducing acoustic decoupling strips and filling the intermediate void with sound-absorbing stone wool, airborne flanking paths are completely broken.
Norm Compliance

Technical Standards & Compliance Matrix

Verified design standards, testing criteria and tolerance controls.

Technical Parameter #1

Structural & Seismic

Applicable Standard
Eurocode 3 (EN 1993) & Eurocode 8 (EN 1998)
Limit / Rating
S355JR / S275JR, DCM/DCH Ductility
Verification Method
3D FEM Analysis & Verification Report
Technical Parameter #2

Steel Fabrication & Welding

Applicable Standard
EN 1090-2 (EXC3) / ISO 3834-2
Limit / Rating
EXC3 Execution Class, CE Marked
Verification Method
NDT Ultrasonic & Magnetic Testing
Technical Parameter #3

Corrosion Protection

Applicable Standard
ISO 12944 (C3 / C4 Dayanım)
Limit / Rating
Epoxy Primer + PU Topcoat (160–240 µm)
Verification Method
DFT Gauge & Cross-Cut Adhesion
Technical Parameter #4

Fire & Acoustic Separation

Applicable Standard
EN 13501-2 / ISO 717-1
Limit / Rating
REI 60–120 · Rw ≥ 56 dB / Ln,w ≤ 48 dB
Verification Method
Accredited Lab Test Certification
Technical Parameter #5

Dimensional Tolerances

Applicable Standard
EN 1090-2 D Sınıfı & ISO 2768
Limit / Rating
Diagonal & Vertical max. ±2.0 mm
Verification Method
3D Laser Metrology & Calibration Jig
Factory Production

Factory Pre-fabrication & Quality Verification (ITP)

Fire safety is achieved via double-layer high-density A1 gypsum fiber linings, protecting the steel frame against direct heat exposure and maintaining structural load capacity for up to 120 minutes during fire tests.
Interface Discipline

Layer Architecture & On-site Interface

01

Structural Node & Joint

Cast-steel corner blocks and EN 14399 grade 10.9 high-strength structural bolts guarantee instant load transfer.

02

Acoustic & Fire Seals

Continuous EPDM weather seals, intumescent fire gaskets and elastomeric vibration isolators installed between volumetric cells.

03

Vertical Shaft Coupling

Vertical MEP risers align on precision axes with flexible compensator couplings for rapid single-point hookup.

04

Certified Crane Rigging

Integrated rigging pick-points calibrated to volumetric center of gravity ensure balanced, tilt-free crane erection.

Technology Ecosystem

Explore Other Engineering Subsystems

Coordinated building envelope, MEP, acoustic, connection and quality control engineering systems.

SYS-01 · EN 1090-2 (EXC3) →

Structural Steel Frame & Seismic Engineering

Precision-welded S275 and S355 box profiles providing superior structural ductility, millimeter tolerance and high seismic safety across multi-storey volumetric configurations.

SYS-02 · U ≤ 0.14 W/m²K →

High-Performance Building Envelope & Thermal Control

Continuous external mineral wool wrap, vapor-permeable smart membranes and thermal-bridge-free detailing achieving Passivhaus-level thermal retention and moisture safety.

SYS-03 · Eurocode 3 & 8 →

Volumetric Joint Interlocks & Structural Node Bolting

Bolted structural tie-plates transferring lateral seismic shear and wind uplift across module corners, enabling swift crane landing and rigid multi-unit coherence.

SYS-05 · Plug & Play →

Plug-and-Play MEP Corridors & Factory Testing

Factory-installed and pressure-tested plumbing, pre-wired electrical quick-couplings and radiant underfloor heating pre-commissioned before departure.

SYS-06 · ISO 9001 / FAT →

Off-Site Quality Control, ITP & Tolerances

Multi-gate Inspection and Test Plan (ITP), 3D laser geometric metrology ensuring ±1.5 mm diagonal accuracy, and comprehensive Factory Acceptance Testing (FAT) documentation.

Direct Architectural & Engineering Leadership

Structure Your Technical Specification & Engineering Baseline

Share your structural parameters, Eurocode design requirements and target typology for a verified engineering feasibility review with the SERMODULA Engineering & Technical Team.

SERMODULA Structural Engineering Desk Eurocode 3 & 8 / EN 1090-2 Technical Coordination
Direct (GSM): +90 (505) 507 04 18
Central Switchboard: +90 (216) 614 04 34
Engineering Email: [email protected]
Consult Engineering Desk Request Technical Specification Dossier →
Knowledge Base

Frequently Asked Questions

Can you hear neighbors in modular apartments?
No. Because each unit has its own independent steel frame and walls with an air gap between them, acoustic performance exceeds conventional concrete buildings (Rw ≥ 58 dB).
How does the building resist fire spread?
Each module functions as an autonomous fire compartment with REI 90/120 walls, ceilings, and intumescent dampers sealing ventilation ducts automatically.
Are non-combustible materials used?
Yes. Insulation (mineral rockwool) and interior dry-lining boards are classified Euroclass A1 or A2-s1,d0 non-combustible.
What happens to impact noise from footsteps?
Independent ceiling suspension and elastomeric under-screed acoustic mats reduce impact sound below Ln,w ≤ 45 dB.
Is certification valid in the EU and UK?
Yes. Tested assemblies adhere to harmonized EN standards accepted across EU member states and UK Building Regulations Part B & E.