The program is both in Italian and in English, user choice.

Classification and resistance of steel sections:

Classification of cross section according to EN1993-1-1:2005 §5.5.

Resistance values of cross section according to EN1993-1-1:2005 §6.2.

Buckling resistance and lateral buckling resistance according to EN1993-1-1:2005 §6.3

From the left tree you select the section type e.g. IPE, HE etc. On the right the table shows all the standard sections for this group and their dimensions and properties. Moving up and down the table on the right the section drawing is shown in scale (you can grab and move the section drawing around the window and you can make it small or bigger with the arrows). Double click on a section and you obtain analytical report for the classification, resistance values and buckling resistance of the selected section.

On the right window are also displayed:

• Classification (1,2,3,4) according to EN1993-1-1:2005 §5.5 for axial loading and loading with bending moments.
• Resistances of the section in compression, bending in y-y and z-z axis, and shear according to EN1993-1-1:2005 §6.2 
• Buckling resistance for various buckling lengths (Lc) according to EN1993-1-1:2005 §6.3.1 
• Lateral torsional buckling resistance for various  lateral buckling lengths (L_lt) according to EN1993-1-1:2005 §6.3.2

Welded Steel sections defined by user

Tables with dimensions and properties of user defined welded steel sections

he properties of the welded sections are defined in a special window from the user.

Automatic computation of properties, strength and buckling values.

Steel section types included in the program:

Parametric steel grade properties.

Parametric partial factors for materials γ_Μ.

Some other functionalities of this program:

Steel characteristics, editable by the user.

Partial factors of materials,editable by the user, with the possibility to choose parameters from various Nationalites (already inserted)

Determination of effective span of columns according to the flollowing shemas

Restrained elements:

changing the number of floors, height of floors, beam spans, inertia ratios, the program calculates automatically  β

Non-Restrained elements:

changing the number of floors, height of floors, beam spans, inertia ratios, the program calculates automatically  β

User can change language

Example 1

Steel column 5.20 m. 
Axial load G = 80 kN, variable axial load Q = 120 kN. 
Steel S 355.
Total axial design load:
Ned =1.35xG+1.50xQ=1.35x80+1.50x120 = 288 kN
Buckling lengths: Liy = 5.20 m, Liz = 5.20 m

In the main program screen, click Classification andResistance of standard cross-sections.

From the tree control on the left select section type HEA.
Click + and all the sections of type HEA are displayed.

For steel grade S 355 and buckling length 5.20 m (table values between 5.0 m and  6.0m ), check Nbyrd and Nbzrd (buckling resistances in compression in y-y and z-z axis) to be greater than the design load of the column Ned=288 kN. 
Section ΗΕ 180 Α is OK. 

For buckling length 6.0m>5.20m, the section has, buckling resistances in compression Nbyrd = 900 kN > 288 kN and Nbzrd = 397 kN >288 kN.

Example 2

Beam 5.80 m with loads.Permanent load g = 18 kN/m. 
Variable load q = 24 kN/m. 
Steel S 355.
Design load: 
qed = 1.35x18.0+1.50x24.0 = 60.30 kN/m
Maximum design bending moment:
My,ed =  60.30x5.80²/8 = 253.6 kNm
Maximum design shearing force:
Vz,ed = 60.30x5.80/2 = 174.9 kN

In the main program screen, click Classification andResistance of standard cross-sections.

From the tree control on the left select section type IPE. Click + and all the sections of type IPE are displayed.

For steel grade S 355 and lateral buckling length L_Lt=5.80 m (table 6.0m), check Μbrd2 (parabolic bending moment diagram) to be greater than the maximum bending moment acting on the beam My,ed = 253.6 kNm.
Section IPE 500 is OK. 

For lateral buckling length 6.0m>5.80 m, has resistance in bending moment due to lateral buckling Μbrd2 = 288kNm>253.6 kNm 
From the table above you can check the resistances in shear and bending. 
Shear resistance Vc,rdz = 1227 kN, bending resistanceMc,rdy = 779 kNm.

Design tables for Structural Steel Sections (Eurocode 3, EN1993-1-1:2005)

Tables with all the international steel sections, with their dimensions, properties,   classification, resistance and buckling resistance values according to Eurocode 3, EN1993-1-1:2005. The tables are extended to welded section with dimensions given from the user.

Classification and resistance of standard steel sections

Classification of cross section according to EN1993-1-1:2005 §5.5.
Resistance values of cross section according to EN1993-1-1:2005 §6.2.
Buckling resistance and lateral buckling resistance according to EN1993-1-1:2005 §6.3

• Classification (1,2,3,4) according to EN1993-1-1:2005 §5.5 for axial loading and loading with bending moments.
• Resistances of the section in compression, bending in y-y and z-z axis, and shear according to EN1993-1-1:2005 §6.2 
• Buckling resistance for various buckling lengths (Lc) according to EN1993-1-1:2005 §6.3.1 
• Lateral torsional buckling resistance for various  lateral buckling lengths (L_lt) according to EN1993-1-1:2005 §6.3.2

The design of steel elements can been done with elastic or plastic analysis depending on the class of the cross section.

The design of sections of classes 1 and 2 is based on the plastic resistance, the design of cross-sections of class 3 is base on elastic resistance and the design of cross-sections of class 4 is based on elastic resistance and effective cross section properties.

The classification of cross sections in 1, 2, 3 and 4 classes depends on the ratios of thickness to width of the parts of the cross-section which are in compression according to tables 5.2 of ΕΝ 1993-1-1:2005.