Sector that deals with all the engineering services provided for by the current regulations for the construction of new buildings of residential type or for offices and survey activities, analysis and subsequent design for all ordinary and extraordinary maintenance activities of existing buildings, including those of historical value, of any type of construction (masonry, concrete, mixed, etc.), including all the design phases and activities of Works Management and Safety Coordination in the Design and Safety Phase

  •     Construction of new buildings (including large and multi-functional ones) and recovery or ordinary or extraordinary maintenance of existing buildings, also of high historical value and/or protected, through the development of all levels of design (architectural, structural and plant engineering), works management, safety coordination, accounting and testing.

  •     Use of software with BIM technology, through which it is possible to supply the Customer, with extremely short timescales, even more project solutions, guaranteeing, at the same time, the utmost rigour in design details, structural and plant engineering definition, and quantity metering.

  •     Energy efficiency of existing buildings.
  • The use of the latest generation software allows the modeling of structures also for improvement or seismic adaptation of existing buildings in compliance with current regulations.

  •     All technical administrative practices and assistance to the Customer to obtain all the opinions of the various Entities necessary to carry out the work (municipalities, municipalities, VVF, Superintendence, etc.), both in the design and planning phase of the interventions, and in the subsequent phase of construction works through a considerable experience in the activity of Works Management and Safety Coordination during the execution phase.




Sector dealing with all engineering services related to transport infrastructure design. Thanks to the heterogeneous professionalism of the members of the working group and the network of consultants with whom 3ING constantly collaborates, 3ING is able to follow all the project phases necessary to create a new infrastructure, from feasibility studies, including all technical, economic and environmental analyses, the definition of the type of surveys to be carried out and their control during the execution phase, up to the final design phases, also guaranteeing constant assistance to the Contracting Station for the reception of the necessary opinions

In the field of transport infrastructure, both individual and collective collaboration has been provided in numerous design activities for some of the most important road works carried out or under construction in Italy.

The complete development of a new infrastructure project, or the adaptation of what is existing, is guaranteed by participation in the entire process of the working group that promotes the specificity and professional interdisciplinarity of the people involved, in compliance with the achievement of the target scope within the set timeframe and with a high level of compliance and quality.

In particular, 3ING is able to carry out all the complex project activities connected with the elaboration of a project for the construction of a new transport infrastructure, road type, following all the activities starting from the economic and technical feasibility studies, the definition and control of survey and survey activities, up to the final design phases, including assistance to the Contracting Station for the acceptance of all permits, for the carrying out of the Conference of Services up to the achievement of


  •     Design at every level of new infrastructures or upgrading, modernisation and securing of existing ones.

  •     Use of the latest generation software for the design of network infrastructures in compliance with the regulations in force in foreign countries.

  •     Planning, verification, management and control of the maintenance system on existing structures with definition and proposal of the activities necessary for eventual recovery.

  • Design with particular regard to the respect of environmental requirements thanks to the knowledge of latest generation technologies able to pursue the minimisation of impacts in the areas of construction, both during construction and operation.

  • Preparation and assistance to companies in the drafting of tenders with an improved offer, proposing innovative technical solutions that guarantee both savings during construction and operation.

  •     "Value Engineering", particularly important for transport infrastructures where the choice of materials and technologies often plays a decisive role in both construction and operating costs.




Highly specialised sector for the development of specific numerical models for the characterization of low and flood hydrological regimes in river areas and for the study of urban hydrology. The many years of experience gained in this field allows the accurate and in-depth development of hydraulic design and modeling of all the hydraulic and hydrological aspects connected to any type of civil work and network infrastructure, with particular attention to the analysis of complex phenomena linked to the main hydraulic infrastructures.

Hydrological analysis, on a local and basin scale, aimed at assessing the flow rates of flood flooding, with an assigned probability of occurrence essential for hydraulic modelling to assess the effects induced by intense meteoric stress.

  •     Analysis of the hydraulic aspects, from the point of view of hydraulic compatibility, connected to the construction and adaptation of road, rail, port and airport infrastructures, through the sizing and verification of the systems for collecting surface and deep water (bungs, ditches, collectors, etc.) and works of art for the crossing of surface water bodies or streams (ditches, bridges, viaducts, etc.).

  •     Feasibility studies and Design of systems for the mitigation of hydraulic risk in river and perifluvial areas through the implementation of structural and non-structural interventions for the containment of floods and the protection of sensitive areas from flood events.

  •     Sizing and verification of systems for the treatment of rainwater from the runoff of surfaces characterized by sensitive polluting loads, through devices in line with the most advanced and efficient technologies and methods and in compliance with current legislation in force, with particular attention to the reuse of purified water resources.

  •     Sizing, verification, adaptation and implementation of sewerage systems for the collection and discharge of black water, both civil and industrial and related treatment.

  • Sizing, checking and upgrading of urban and suburban water networks, consisting of drinking water supply pipelines and associated works for collection, lifting and the necessary pipes connecting to the main urban network.



Sector aimed at project accounting and the development of economic and administrative documentation: it guarantees the ability to contract the work from the design stage and compliance with contractual obligations between companies and the Customer during the execution of the works.

The design activity and the subsequent implementation phase include the drafting of the technical and economic documentation required by current legislation (Legislative Decree 50/2016 and subsequent amendments, mm. ii and Presidential Decree 207/2010 and subsequent amendments, mm. ii.).

3ING has developed a specific sector, integrated into the most strictly engineering areas, aimed at project accounting and the development of any economic and administrative documentation that guarantees the project's ability to be contracted and compliance with contractual obligations between the Company and the Client during the execution of the works.


  •     Definition and compilation of Unit Price List, Estimation Metric Calculation and Price Analysis;

  •     Development of an economic framework to support the customer in order to provide a picture of the amounts to be expected in addition to the specific amounts for the construction of the work;

  •     Contract scheme and special contract specifications: this is one of the most important design documents as it regulates in detail the relationship between Client and Contractor, defines the economic terms of the works, the timescales, payments, subcontracting rules, penalties, etc;

  •     Supply specification: as an alternative to the Special Contract Specification, the specification describes in detail the characteristics necessary for the construction of the work;

  •     Labour incidence picture: The document indicates the cost of labour and defines the percentage incidence of the quantity of labour for the different categories of work or work;

  •     Drafting of the maintenance plan: document that provides for, plans and plans the maintenance activity of the intervention in order to maintain its functionality, quality characteristics, efficiency and economic value over time.

The skills in the accounting-administrative field are also fundamental during the execution of the work and, specifically, in support of the Works Department.


  •     Feasibility analysis and drafting of the documents for variant works and related accounting deeds (new prices and comparison pictures);

  •     Work Newspaper: this is the accounting document with which to monitor the technical and economic progress of a work step by step;

  •     Accounting records and passbooks of measures: these are the accounting documents that summarise and centralize the entire accounting of the work, through which progress is constantly monitored not only in terms of the quantities carried out but also in terms of the amount of compensation accrued by the contractor;

  •     Status of work in progress: this is the document used to pay the down payment instalments and summarises all work and supplies performed from the start of the contract to the time of issue;

  •     Final account: this is an accounting document issued by the Works Manager following completion of the works, which accurately defines the works carried out, the contractor's compensation and any receivable.