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Kazanchis Executive Hotel & Suites
Hospitality STATUS: COMPLETED YEAR: 2024

Kazanchis Executive Hotel & Suites

A 4-star boutique diplomatic hotel engineered with advanced acoustic isolation, column-free ballroom transfer slabs, and a dramatic cantilevered sky lounge.

01 // PROJECT OVERVIEW

Architectural Brief & Programmatic Vision

Located adjacent to international diplomatic embassies and the UNECA headquarters, this executive hospitality asset required stringent security zoning, acoustic dampening between guest suites, and complex structural transfer engineering to accommodate expansive banquet halls beneath upper guest room floors.

02 // CONSULTANCY SCOPE

SEMAYI Engineering & Advisory Responsibilities

Heavy structural transfer girder engineering over the 500-seat grand ballroom
Acoustic engineering consultancy and Sound Transmission Class (STC) modeling
Fire life safety consulting in accordance with NFPA 101 standards
Contract administration and contractor valuation auditing
Full MEP coordination ensuring discreet concealment of central HVAC equipment

03 // TECHNICAL APPROACH

Structural Methodology & Code Compliance

SEMAYI designed a series of post-tensioned concrete transfer girders at level 3, allowing 12 floors of standard guest room modular grids to rest securely over a completely column-free ballroom and lobby beneath. Acoustic decoupling systems were integrated into party walls and plumbing risers.

Structural System Post-Tensioned Transfer Girders Supporting Concrete Frame
Foundation Substructure Combined Mat-Pile Substructure with Vibration Damper Joints
Building Envelope Acoustically Rated Double Glazing with Argon Gas Infill (STC 44)
Sustainability Profile Heat Recovery Chillers and Central Solar Thermal Water Heating

04 // VISUAL DOCUMENTATION

High-Resolution Gallery & Blueprints

Exterior illuminated night view across Kazanchis
Exterior illuminated night view across Kazanchis
Executive sky lounge offering panoramic city vistas
Executive sky lounge offering panoramic city vistas
Acoustically isolated presidential suite bedroom
Acoustically isolated presidential suite bedroom

05 // ENGINEERING RESOLUTIONS

Challenges & Technical Interventions

CHALLENGE 01:

Transferring immense column loads across an 18-meter clear span ballroom without excessive structural depth.

SEMAYI RESOLUTION: Specified high-strength post-tensioned tendons with parabolic profiling, reducing transfer beam depth by 450mm and preserving ceiling height for the banquet venue.

PROJECT DOSSIER // SPECS

Location Kazanchis Diplomatic Quarter, Addis Ababa
Client Category International Hospitality Group
Built Enclosed Area 18,800 m² (140 Keys + Sky Lounge & Ballrooms)
Completion / Delivery 2024 (Completed)
SEMAYI Disciplines Engaged
  • Structural Engineering Consultancy
  • Building Design Consultancy
  • Construction Supervision
  • Project Management & Contract Administration
Architectural structure
SEMAYI / CLIENT CONSULTANCY

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• Addis Ababa Office • Comprehensive Due Diligence • Technical Clarity