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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringZurichRiess Ingenieur-GmbH
Riess Ingenieur-GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Riess Ingenieur GmbH is the provision of engineering services, particularly in the areas of: plant engineering, building services engineering, safety engineering, and aerodynamics. With a special focus on tunnel ventilation, fire protection and risk analysis, the company offers consulting and planning services for tunnel projects and operators.

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Products & services

Industry:Technical Consulting & Engineering
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Riess Ingenieur-GmbH

5
Tunnel ventilation
Ventilation systems for road tunnels, from feasibility studies and concept development through dimensioning, simulation and detailed design to tendering, specialist site supervision, commissioning and operational optimization.
Tunnel safety and protection of infrastructures
Hazard analysis, risk analysis, risk assessment, safety assessment and availability analysis for tunnels and other infrastructures; safety concepts and recommendations for measures for operators and owners.
Immission forecasts
Situation analysis, emissions calculation, dispersion calculation, analysis of statistical parameters, as well as assessment and documentation as a basis for project approvals and mitigation measures.
Simulations
Numerical 1D and 3D simulations of flow, smoke spread and evacuation, in particular for tunnel fire and complex flow problems.
Engineering services for plant engineering, building services, safety engineering and aerodynamics
Design, advisory and expert engineering services as well as execution of overall projects in construction, transport, energy, environment and industry.
Trust & reputation

ranQ Trust Score of Riess Ingenieur-GmbH

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Media authority

Data basis 54% · As of October 2026

Riess Ingenieur-GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Riess Ingenieur-GmbH scores 72.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.75.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Riess Ingenieur-GmbH scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).83.322%
Riess Ingenieur-GmbH scores 0.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 54%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Media authority. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Funkackerstrasse 17
8050 Zurich

At a glance

Legal form
Limited Liability Company
UID
CHE-218.451.567
Founded
2019 · 7 years
Last commercial register change
February 11, 2019
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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