CDM Dolmen

DOLMEN C.‎A .‎ is a programme for structural and geotechnical calculations, dedicated to the design of reinforced concrete structures.‎ DOLMEN C.‎A.‎ includes static analysis, simplified seismic analysis and dynamic modal analysis, reinforcement of beams, columns, plates and septa, plinths and retaining walls, the design and verification of sections in CAP and is equipped with a dedicated CAD to produce site executives and construction details.‎ THE SOFTWARE MODULES Stress Analysis DOLMEN C.‎A.‎ includes a three-dimensional modelling module that allows you to define the structure by simply drawing it within a powerful and intuitive CAD, equipped with UNDO functions and automatic control of the input data, capable of identifying any errors in setting the model: the particular philosophy of flexibility in setting the input allows you to define structures of a completely generic type in the simplest way.‎ TheStress Analysis (DW1) includes static and dynamic seismic analysis with response spectrum and modal superposition, complete or simplified with rigid planes, obviously updated to the latest standards.‎ Pillars The Pillars module (DW16), which is completely similar in approach and philosophy to 'Continuous Beam', is interactive and versatile and allows you to design and check pillars quickly, in full compliance with NTC 2018.‎ When importing from the 3D Structure CAD, the Pillars programme allows, in addition to the envelope for all planned combinations, also the envelope for several similar pillars; again from the 3D Structure CAD, it is possible to do the multiple design of several pillars at once.‎ Where required, the verification of the hierarchy of resistances is automatically performed for the main structural elements.‎ Plates and Baffles A specific module for the reinforcement of two-dimensional elements, Plates and Baffles (DW8), is able to calculate the reinforcement of the two-dimensional structure taking into account every relevant parameter and to provide the results both numerically and graphically, also creating site plans and performing local checks, such as punching checks.‎ Dynamic Analysis DOLMEN C.‎A.‎ performs a dynamic analysis both according to NTC 2018, Ordinance 3274 and its subsequent amendments, and the Ministerial Decree of 16 January 1996 through the Dynamic Analysis module (DW6), which automatically generates elastic acceleration spectra for the Ultimate Limit State and the Exercise Limit State.‎ This software determines the eigenvalues and eigenvectors, i.‎e.‎ it finds the structure's own pulsations and the corresponding vibration shapes.‎ The visualisation of these eigenvectors is useful for realising how the structure reacts to cyclic horizontal forces.‎ IS Walls The DOLMEN C.‎A.‎ package also allows the calculation and verification of gravity, semi-girder, corbelled, buttressed or toothed retaining walls using the IS Walls (IS MC) software.‎ The retaining wall can have any geometry, with inclined internal and external faces, be on piles or micropiles and be intiranted with active and passive tie rods.‎ The programme automatically proposes predefined reinforcement schemes that the user can easily modify and customise, adapting them to his needs and also saving them for subsequent work.‎ Load combinations are automatically generated in accordance with NTC 18, depending on the chosen approach, or can be created independently by the user.‎ Dolmen Plan A two-dimensional CAD, Dolmen Plan (DW4), is added to the component modules of the package.‎ It is very simple and at the same time highly dedicated to the construction site executive, with the possibility of importing and exporting graphic files in DXF format.‎ This dedicated CAD allows the parametric drawing of elements such as stairs, joists, generates reinforcement lists and has internal procedures for composing tables.‎ All modules share a single working style and, although they form a freely composable whole, they are not perceived by the user as independent entities but as a single environment rich in potential and with smooth and immediate transitions from FEM to reinforcement to executive.‎ Continuous Beam The tool dedicated to the design and verification of beams is the Continuous Beam module (DW14), designed to work both independently (with static diagrams that range from continuous beams with simple supports, to semi-frames, to beams that are constrained in any case, with possible inclined beams and cantilevers) and in concert with the entire programme, reading from the global model reinforcement and/or loads and/or stresses: reinforcements can be imported from predefined schemes or inserted manually, and in any case modified, deleted, cut, shifted, etc.‎ thanks to the presence of a simple but efficient internal CAD.‎ By means of a simple macro language, it is possible to construct customised reinforcement schemes, even though an extensive library of schemes already exists.‎ Reinforcement elements in reinforced concrete DOLMEN C.‎A.‎ also includes another module for the calculation of reinforced concrete elements (DW2-3), which allows the design of beams and columns taking into account the 6 stress characteristics: DOLMEN offers the professional multiple levels of calculation and never just one obligatory path, as the software is designed for the thinking designer and not for the technician who simply presses a button.‎ Even in this case, the general settings of the design phase are freely customisable, which translates into the programme's ability to adapt to all kinds of design requirements, variations in Italian regulations or foreign standards.‎ Section Verification It is also possible to focus attention on individual sections, by means of Section Verification (DW7): this module, dedicated to the analysis of sections in reinforced concrete, prestressed concrete or reinforced with carbon fibres, consists of two procedures.‎ The first allows the individual section to be verified for several triads of acting stresses (N, Mx and My), while the second allows the interaction diagram of the section to be constructed as the normal stress and the two bending moments vary.‎ IS Plinths The DOLMEN C.‎A.‎ programme also allows the study of various types of foundations, whether Winkler beams or plinths possibly on piles.‎ IS Pl inths (IS PT) is the software dedicated to the analysis of surface foundations, the design of which may be conducted in terms of plinths on Winkler soil, isolated or in groups, on piles and connected by beams.‎ The presence of the socket can be considered, verifying it according to CNR 10025/84 standards.‎ The results provided concern the load-bearing capacity of each plinth, the sliding verification, the stress distribution of all the parts of which the foundation is composed, and the design and verification of the reinforcement of all the elements present, according to the admissible stress or limit state method.‎ Both the general plan and the reinforcement tables of each plinth can be exported in Dolmen Plan and in .‎dxf.‎ IS ProGeo To complete the structural calculation from a geotechnical point of view, there is IS ProGeo (IS PG), a fundamental compendium of small modules useful for the general design of structures in contact with the ground.‎ The individual applications can be used independently or in cascade from the structural programmes and concern the calculation of the bearing capacity of surface foundations and reinforced concrete piles, the evaluation of subsidence in granular and cohesive soils, the geotechnical analysis of retaining walls with the identification of acting actions and the distribution of stresses on piles (in two dimensions and three dimensions).‎ Recently, two further modules have been added that allow the definition of a database of stratigraphies, soil mechanical properties and SPT penetrometric tests.‎