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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil Engineering FirmsTrübbachIngenieurbüro Rissi + Partner AG
Ingenieurbüro Rissi + Partner AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Rissi + Partner is an engineering firm specializing in the planning and execution of projects in the fields of civil engineering, hydraulic engineering, and transportation. The core activities include: * Planning and execution of drainage systems, water and river structures, hydroelectric power plants, and road construction projects * Creation of pipeline cadastres, GIS data management, and updating * Geotechnical investigations, stability calculations, and excavation pit securing * Hydraulic calculations and simulations, dimensioning of hydraulic structures and systems * Project management, client consulting, and procedural planning * Surveying, construction layout, and digital terrain modeling * Structural engineering, static calculations, and dimensioning of reinforced concrete structures The company also offers services in the areas of renaturation, revitalization, torrent control, flood protection, and flood modeling.

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Offering

Products & services

Industry:Civil Engineering Firms
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Ingenieurbüro Rissi + Partner AG

✓ Offered12
Hydraulic engineering / hydropower
Planning and execution of water and river engineering works, torrent control structures, renaturalisation, revitalisations, and also hydropower plants and hydraulic calculations.
Urban drainage
General drainage planning (GEP), sewer rehabilitation, hydraulic calculations and simulations, and road runoff treatment for built-up areas.
Utility line construction
Planning and construction of utility line works for gas, water, EW, telephone and TV, wastewater pressure mains, sewer systems, excavation and pipe-laying works.
Roads & traffic route construction
Traffic planning, street space design, junction design, main and access roads, as well as alpine, forest and goods roads.
Client advisory and project management
Client advisory, process planning for building permit and approval procedures, controlling, project quality management and project organisation.
Site supervision and construction management
Site management, construction sequence and scheduling, measurement and cost control, quality management, as well as site inspections, tests and construction meetings.
Hydraulic calculations and simulations
Dimensioning of hydraulic structural components and systems, hydrodynamic watercourse, water and wastewater network calculations, flood inundation modelling and catchment area analyses.
GIS data management and updating
Utility network cadastre, waterway engineering cadastre and bridge cadastre, as well as ongoing updating of GIS data and plans.
Geotechnics
Stability calculations and excavation support for construction projects in civil engineering and building works.
Construction surveying
Construction staking, digital terrain models, quantity calculations, surveys for utility network cadastre and crack records.
Structural civil engineering
Structural statics calculations and dimensioning of reinforced concrete structures for civil engineering and building works.
Nature and environmental services
Natural hazard studies, renaturalisation and revitalisations in connection with watercourse and hydraulic engineering projects.
Trust & reputation

ranQ Trust Score of Ingenieurbüro Rissi + Partner AG: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Ingenieurbüro Rissi + Partner AG scores 49.8 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.68.224%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.17.610%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.35.08%
Ingenieurbüro Rissi + Partner AG scores 85.5 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.100.012%
  • 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%
Ingenieurbüro Rissi + Partner AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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).85.022%
Ingenieurbüro Rissi + Partner AG scores 1.1 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 35.1.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Ingenieurbüro Rissi + Partner AG reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Dornau 5
9477 Trübbach

At a glance

Legal form
Corporation
UID
CHE-114.635.777
Founded
2008 · 18 years
Last commercial register change
November 16, 2023
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.100.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
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