Piazza G. Mazzini n. 10/1 — 33019 Tricesimo (UD)
KEYSTONE
Edificio contemporaneo in pietra e bronzo, progetto KEYSTONE

General Contractor

We design, build and transform.

Civil and industrial buildings, with one point of contact and turnkey solutions.

What we do

What we do

A building project calls for different skills and a direction able to hold them together. Keystone follows the design, construction and renovation of civil and industrial buildings, relating the client’s needs to the character of the building and the conditions of the site.

We work as a general contractor, offering a single point of contact to coordinate professionals, contractors and operational phases. The turnkey approach makes it possible to take on the work with an overall view, from the first definition of the needs through to handover.

Our work has its roots in Friuli, where knowledge of the territory accompanies the technical choices and the dialogue with those who entrust their project to us.

Structural design desk with models and drawings

01

Structural design

From the needs of the building to the construction choices

Structural design defines the system that supports a building and determines how it behaves. Every choice must answer to the character of the work, its intended use and the conditions of the place where it is built.

For new buildings we develop the structural design in relation to the architectural and functional requirements. On existing buildings we start from knowledge of the building itself: configuration, materials, alterations and the documentation available guide the assessments and the possible solutions.

From the first analysis to the construction drawings, we work so that the design can become clear instructions for the site. Dialogue with the other disciplines makes it possible to deal with clashes in time and to assess the consequences of the construction choices.

Compression test on a concrete cube

02

Laboratory testing

Knowing the materials in order to guide the works

The properties of a material cannot be read from its appearance alone. Tests and analyses provide data that help understand its performance and support the assessments of those who design, check or direct a work.

In relation to the needs of the work, we define the set of checks required and coordinate the testing with the competent parties. The aim is to gather relevant information, to be read together with the technical documentation and the actual condition of the building.

The results help assess the materials used in new construction and deepen knowledge of those already present in existing buildings. They become a means to justify design choices, identify possible critical points and define the works.

Site supervision on a reinforced concrete structure

03

Site supervision

Following the site and giving continuity to the design

During construction, the design meets works, supplies and decisions that call for a constant technical presence. Site supervision follows this passage, checking that the works correspond to the design and to the applicable requirements, within the scope of the appointment.

We check the works at the different stages of progress and keep the dialogue with contractors, professionals and the client. When unforeseen issues or the need for a change arise, we assess the technical implications and accompany the definition of the solutions.

Particular attention goes to the passages that condition the work that follows: dealing with them promptly helps contain clashes and make decisions more informed. The client thus has a technical reference that follows the evolution of the work through to its conclusion.

Construction site at sunset with a surveying instrument

04

Construction safety

Organising the activities starting from the risks

Every site changes over time. The works change, the contractors present change, and so do the conditions in which people operate. Safety therefore requires an initial plan and coordination that accompanies the progress of the work.

Within the coordination appointments entrusted to us, we analyse the risks connected with the organisation of the site and with clashes between activities. We prepare the required documentation and define the prevention and protection measures relevant to the work phases.

During execution we check that the coordination measures are applied and that the planning remains adequate as the works evolve. Dialogue with contractors and professionals makes it possible to address critical points and update the measures when needed, respecting the roles and responsibilities of each party.

Let’s talk about your project

A new building, a building to renovate, or a technical question to look into: the first step is to understand the starting point and the aims of the work.

Contact us to arrange a meeting and decide together how to proceed.

Tell us about your project

From the technical notebook

Notes from the lab, the site and the code. Sample content for indexing.

Detail of a laboratory concrete test

Laboratory · 12 August 2026

Concrete cubes: how to read a compression test

Characteristic strength, class and specimen moisture: what the site engineer should check before signing the report.

Historic palazzo undergoing seismic improvement

Restoration · 28 July 2026

Seismic improvement of a nineteenth-century palazzo in Cividale

Soil samples from a borehole

Geotechnics · 9 July 2026

Ground investigations: when boreholes are actually needed

Partners

Sample network: laboratories, contractors and suppliers we build sites with.

CT CEMTEST Lab Materials testing
NE Consorzio Nordest Associated contractors
FA Forni Acciai Steelwork
IM Italmat Inerti Aggregates
AO Geologi Alpi Orientali In-situ investigations
UV Uniudine Tech Hub Applied research

Contact

KEYSTONE srl
Piazza G. Mazzini n. 10/1
33019 Tricesimo (UD)

Tel +39 0432 506560
Fax +39 0432 228169
progetti@keystone-srl.com
PEC keystone-eng@pec.it

Meetings by appointment

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Find us

Studio on the square in Tricesimo, ten minutes from Udine. We receive by appointment; parking on the side streets.

Piazza G. Mazzini n. 10/1
33019 Tricesimo (UD)

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