Designing structures to last — built sustainably

Services

From early-stage variant analysis to detailed execution-stage calculations, including seismic design.
Timber focused detailing with focus on repeatability and cost-efficiency.
Timber-specific fire-safety expertise. Designing and detailing in accordance with fire-safety requirements.
Structural analysis of existing structure for transformation of heritage buildings.
Optimized design of complex bi-axial and multi-span TCC slabs.
Up to date market prices and phase-specific precision level.
Structural Design
Detailing
Fire safety design
Retrofitting existing buildings
Timber-concrete-composite design
Cost estimation

Collab­orative Engineering

Studio

At RISE – Responsible Innovative Structural Engineers – we bring complex construction ideas to fruition in close collaboration with our clients, architects, and all project partners. We develop efficient, durable and environmentally conscious structural solutions that support both architectural intent and technical performance.

Our passion lies in timber structures, thoughtfully combined with other materials to make the best use of their respective strengths. Our work spans a wide range of projects, including offices, schools, residential buildings, and the retrofitting of heritage structures.

Selected Projects

About

Timber focused engineer

Simon Gueissaz

MSc. in Wood Technology – BFH AHB
BSc. Civil Engineering – HEIA-FR
CAS Nachhaltiges bauen – FHNW
CAS Brandschutz im Holzbau – BFH AHB

2025

RISE Engineers GmbH

2025

Innovation Partner of research project on Point-Supported Timber-Concrete

2023 – 2024

Aspect Structural Engieers, Vancouver

2019 – 2024

Solubois ZH GmbH

Simon is passionate about collaborating with like-minded people to develop innovative and effective structural solutions. He enjoys working across a wide range of structures, combining materials to create solutions tailored to the specific needs of each project.

Severin Reusser

BSc. Civil Engineering - ZHAW
Dipl. Structural Engineer Heritage Conservation - Fulda
Joiner EFZ Construction & Windows

2026

RISE Engineers GmbH

2025

Reusser Handwerk und Planung GmbH

2020 – 2024

Solubois ZH GmbH

2015 – 2019

Meier AG Joinery

Precision and resourcefulness best describe Severin’s work ethic. With experience as a joiner and carpenter, as well as a civil engineer specialized in timber structures and heritage buildings, he develops sustainable solutions with a focus on design for disassembly and reuse, while preserving existing structures wherever possible.

Testimonials

Die langjährige Zusammenarbeit mit Simon ist für uns eine grosse Bereicherung. Bereits im Entwurfsprozess sucht er nach innovativen, nachhaltigen und kosteneffizienten Lösungen. Sein Fachwissen im Holzbau hilft uns regelmässig, sei es bei kleinen Low-Tech Umbauten oder bei der Planung grösserer Wohnbauprojekte.

Kristin Sasama

SasamaDietrich

La collaboration avec Simon pour l’EMS à Yvonand a été très productive. Grâce à sa persévérance et à son ingéniosité, nous avons pu trouver des solutions qui ont permis de réduire les coûts de construction tout en maintenant l’expression architecturale souhaitée.

Olivier di Giambattista

KOMPIS

Ce fut une véritable collaboration, l’expertise de Simon sur la structure a été déterminante pour le concours de la cabane Bordier. Ensemble, nous avons conçu des solutions alliant esthétique et acoustique, parfaitement adaptées aux défis du transport en haute montagne.

Jonathan Zwygart

Lacroix Chessex

Tout au long de notre collaboration pour concours de Collombey-Muraz, Simon a fait preuve d’un véritable esprit de collaboration, partageant et enrichissant nos idées avec pertinence. Son approche approfondie et innovante, notamment sur les enjeux écologiques, a exercé une influence positive sur la qualité architecturale du projet.

Louise de Lavallaz

Louise de Lavallaz

Let’s explore your project possibilities