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Design of concrete structures according to Eurocode 2

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BETONexpress, software for designing structural elements of reinforced concrete.

With BETONexpress you can easily design structural elements of reinforced concrete. For each structural element, you specify the basic dimensions, loads and material properties, and you obtain the detailed concrete design in ultimate limit state (ULS), and in serviceability limit state (SLS).
The dimensioning is according to Eurocode 2, EN 1992-1-1:2004, Design of concrete structures, General rules and rules for buildings, with supplement of Eurocode 7, EN 1997-1:2004, Geotechnical design – General rules, for geotechnical analysis (footings, retaining walls), Eurocode 0, EN 1990:2002, for load combinations, and Eurocode 8 for seismic loading. The last EN versions of the Eurocodes are implemented. You can also compute the capacity of slabs, beams and columns strengthened with FRP (fibre-reinforced polymers). Regular and light weight aggregate concrete included.
The program's CAD modulus automatic generates detailed drawings of the structure and the reinforcement. A combined detailed report and reinforcing steel schedule is produced for the designed concrete components. Assumptions and references to design codes are shown in the report. The reinforcing steel schedule can be edited with a specialised editor which is included. The user can select the applicable National Annex. The design code parameters, as well as default values, can be adjusted by the user. Design Charts and Tables for use and understanding of Eurocode 2 are included n the program. In addition a set of engineering tools are included in the program.
New features in BETONexpress 2015



    Slabs

Solid slabs and ribbed slabs.

  • Uniformly distributed dead and live loading. Load combinations according to Eurocode 0.
  • Two way slabs with various support conditions. Czerny, Bares or Marcus solution methods.
  • One-way continuous slabs (up to eight 8 spans). End cantilevers can be specified. Load factors for every span. Moment redistribution.
  • Cantilever slabs. 
  • Crack and deflection control.
  • Regular and Light weight concrete.
  • Moment capacity of concrete slab cross-sections and sections strengthened with FRP (fibre-reinforced polymers).
  • Flat slab, Punching shear (2015)
  • Flat slab design (2015)
View more types of beams View more types of beams    Beams
  • Beams of rectangular or T section in combined loading bending shear and axial force.
  • Beams of one span under combined loading.
  • Continuous beams (up to 8 spans) under uniformly distributed loading, combined loading bending, shear and torsion.
  • Crack and deflection control.
  • Regular and light weight concrete.
  • Computation of moment capacity of concrete beam cross-sections and sections strengthened with FRP (fibre-reinforced polymers).

View more types of columns View more types of columns   Columns
  • Biaxial bending, (rectangular and round section) isolated column (stability control). Second order effects.
  • Biaxial bending (N-Mx-My) diagrams obtained by numerical integration of concrete and steel forces over the cross-section.
  • Computation of moment capacity of concrete column cross-sections and sections strengthened with FRP (fibre-reinforced polymers).
  • Complete Charts for simple and double bending.
Foundation bearing resistance (2015)
  • Soil bearing resistance
  • Drained and undrained conditions

The basis for the design of foundations is the bearing resistance of the soil.
The design bearing resistance can be calculated using analytical or semi-empirical methods. Annex D of Eurocode 7, EN1997:2004 describes a method of obtaining the design bearing strength of the soil.

View more types of spread footings

Drawings of Fundament
View more types of spread footings Spread footings
  • Centrically loaded footings.
  • Eccentrically loaded footings, and eccentric footings.

Vertical loading and moments at the top. Dead and live loading.

Exact computation of pressure distribution under the footing. Geotechnical design using Eurocode 7, EN 1997-1:2004, or allowable soil stress.

Load combinations according to Eurocode 7 (EQU, STR, GEO load cases), and Eurocode 0.
footpressdistr.gif (1947 bytes)
Full CAD drawing of footings with reinforcement.

Fundaments of Steel columns (2015)
The concrete footing of steel structures has to be designed to resist soil pressure for maximum vertical load and it must have enough weight to resist uplift from wind or seismic forces. You can design Pin and Fixed end column foundations. You can also specify if the foundation has a horizontal tie to take the horizontal outwards forces or not.


Loading on the fundament

The final actions after multiplication with safety factors (γG and γQ) Eurocode-1990-1-1, Table A1.2  

For downwards loading usual values are: γG =1.35 (unfavourable), γQ=1.50.
For upwards (uplift) loading usual values are:
γG =0.90 (favourable), γQ=0.00.

Steel Tie and Passive earth pressure

The high horizontal forces acting at the base are acting outwards as a result of bending in the columns due to vertical loading on the roof. This is resisted in two ways.
  • Steel tie at column base
  • Passive earth pressure on the side of the foundation
View more types of Retaining walls

Automatic generation of drawings

View more types of Retaining walls  Retaining walls

Retaining walls of gravity or cantilever type (reinforced). Geotechnical design using Eurocode 7, EN 1997-1:2004, Geotechnical design – General rules or allowable soil stress. Active and passive earth pressure using Coulomb's theory. Design of gravity walls using Eurocode 6 (EC6) or allowable stresses.
Earthquake analysis according to Eurocode 8 (EC8),  Mononobe-Okabe.
Two different types of cantilever walls in the program:

  • Type-A. Walls with very small back heel. The active earth pressure is computed using Coulomb's theory at the back face of the wall.
  • Type B. Walls with back heel. The active earth pressure is computed using Rankine's theory at a vertical surface at the end of the heel.

The design of cantilever type walls is based on Ultimate Limit State Design of concrete according to Eurocode 2. The design checks are performed at each tenth of the stem height. The reinforcement of the stem is optimised, and depending on the stem height the reinforcement is reduced toward the top of the wall. The reinforcing bars are automatically placed in the reinforcing bar schedules. Optional Base key against sliding.
Load combinations according to Eurocode 2, Eurocode 7, (EQU, STR, GEO load cases) and Eurocode 0.

 Full CAD drawing of retaining walls with reinforcement.

Water basins, swimming pools (2015)

Design of rectangular water basins. The solution is for a 2-dimensional cross section across the smallest dimension (width) of the basin.
The basin is assumed to sit on elastic ground and is analyzed with finite element analysis. The basin walls are subdivided in 2 beam elements of length H/2.

The basin floor is modelled with 16 beam elements with nodal points connected to the ground with elastic springs. The stiffness of the elastic springs is computed from the Winkler’s foundation modulus Ks [kN/m2/m].


The loading conditions include all the load cases according to Eurocode 0 (EQU, STR and GEO) for:


 ·   Empty water basin (only earth pressure)
 ·   Filled water basin without earth pressure
 ·   Filled water basin with earth pressure

The reinforced concrete design includes also serviceability control with limit crack width specified by the user.

                                  Basement walls (2015)

· Walls with only the bottom restrained for lateral movement.
·
Walls with restrained the bottom and the top for lateral movement.

In the first case the sliding of the wall is prevented due to the retraining of the base in movement. The active earth pressure is computed as usual using Coulomb’s (1776) or Rankine’s (1857) theory, Eurocode 7 § 9.5.1.

In the second case, the active earth pressure conditions are obtained for Ko in rest conditions according to Jaky (1948), Eurocode 7 § 9.5.2.

     Basement walls (2015)

Bearing walls in vertical or horizontal load on the top without any earth pressure.
The horizontal load on the top can be defined from Eurocode 1-1-1:2001 Table 6.12 according to National Annexes
.
The horizontal load on the top can be also defined according to Eurocode 1-1-7:2006, in case of impact load.

Walls with horizontal distributed load (2015)

In case of wind loading the wind pressure is according to Eurocode 1-1-4:2005.

Corbels - Brackets

Short cantilevers projecting from column faces, with  ac/hc<=1, where ac the load lever arm and  hc the corbel height. Design according to Eurocode 2, § 5.6.4,§ 6.5, and Annex J.3. Load combinations according to Eurocode 2 and Eurocode 1.

 

Full CAD drawing of corbels with reinforcement.

Deep beams

Deep beams with dimensions Leff/h<=2, where Leff length and  h height.

Design according to Eurocode 2, § 5.6.4,§ 6.5, using simple strut and tie model. You can design deep beams subjected to uniformly distributed load (with dead and live components) at the top and bottom faces of the beam.

Load combinations according to Eurocode 2, and Eurocode 0.

Full CAD drawing of deep beams with reinforcement.

Reinforced concrete design charts
  • Tables and Design charts with Eurocode 2 as: Kd , med w, effective length
  • Design charts for column design single and double   bending.
  • Design charts for deflection control
graph 02.gif (32242 bytes) Grap4.gif (36080 bytes)
Edit steelbar schedule Steel bar Schedule

Detailed steel bar schedule. You can modify and update the steelbar schedule simply with an editor, with ready steel bar menus.

 

The report and the steel schedules can also be exported to PDF and WORD files.

 

 

print preview

Preview and print Report

Full report preview. The reports are very analytical, showing all the computations, graphics, with references to the design code paragraphs. The computational errors, or inadequate dimensioning, are shown in red.

  • Export of all reports to PDF or Word format.
  • Export of all CAD drawings to PDF or DXF(Autocad) format.

 
 


BETONexpress Help

National Annexes
Parameters
Design Rules

You can select the National Annex.
The code parameters, as well as default values can be adjusted by the user.

  • Users manual included in PFD format.
  • On line help

A complete on line help assist the user for the required data, as well as references to the corresponding code subjects, as well as theoretical overview.

Section properties

Engineering tools
  • Unit conversion
  • Area calculations
  • Section of properties
  • Calculation Rolled steel shapes
  • Reinforcement tools
  • Anchorage lengths
  • Earth pressure coefficients
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Revised: november 02, 2016.  


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