Main Window
When the application is started, the first thing that appears on the
screen is its main window with a set of button for selecting a working
mode.
Design codes can be selected from the respective list. Information on
the selected code is displayed in the bottom left corner of the active
mode window. The given version of the application implements the analysis
according to SNiP ІІ-23-81*, SP 53-102-2004, SP 16.13330.2011,
SP 16.13330.2017, DBN B.2.6-163:2010, DBN B.2.6-198:2014 and Eurocode-3.
All modes can be subdivided into the following groups:
- reference and auxiliary modes for designing steel structures;
- modes for checking the sections and joints for compliance with
design requirements of SNiP, ShNK, SP or DBN;
- design modes for designing simple structural members.
A detailed description of each mode is given below. Their brief characteristic
is given here.
The reference and auxiliary modes include:
- Steel
— implements recommendations from Table 50* of SNiP II-23-81* on selection
of steel grades (Annex C of SP 53-102-2004 and SP 16.13330, and Annex
F of DBN B.2.6-163:2010, and Annex D of DBN B.2.6-198:2014) and uses
an approach described in the paper by A.V. Perelmuter, L.A. Gildengorn
“On classification of steel structures” and in DBN B.2.6-163:2010.
The mode also gives information on correspondence of steel grades
defined by GOST 27771 to specific steel grades defined by GOST or
standard specifications, and provides reference data on the mechanical
properties of steel;
- Assortment
of Rolled Profiles — enables to browse through assortments;
- Assortment
of Sheet and Plate Steel — provides information on assortments
of sheet and plate steel;
- Bolts
— enables to browse through an assortment of bolts and a list of standards
and codes used for the design of bolted joints;
- High-Strength
Bolts — provides sizes and properties of high-strength
bolts, nuts, and washers;
- Limit
Slenderness — provides recommendations from design codes
for limit slenderness of members in tension and in compression;
- Service Factor
— is used to browse and select values of service factors (γc)
for structures, members, bolted joints and high-strength bolted joints
according to SNiP, ShNK, SP or DBN;
- Materials for
Welding — implements requirements of Section 2 of
SNiP II-23-81*, ShNK 2.03.05-13, Section 6 of SP 53-102-2004,
Section 5 of SP 16.13330, Sec. 1.2 and Annex G of DBN B.2.6-163:2010,
Section 6.2.2 and Annex E of DBN B.2.6-198:2014 for selection of materials
for welded joints and for selection of the design strength values
for welded joints;
- Envelopes
– enables to determine unfavorable combinations of multiple loads
acting on bending members, and plot the envelope diagrams of moments
and shear forces;
- Influence Lines
– enables to plot influence lines for multi-span continuous beams
of constant cross-section;
- Geometric
Properties — enables to calculate the geometric properties
of a given cross-section;
- Effective
Lengths – implements recommendations from Tables 11, 12,
13*, and 17a of SNiP II-23-81* (Tables 25, 28, 29 of SP 53-102-2004,
Tables 25, 30, 31 of SP 16.13330, Tables 1.9.1, 1.9.2, 1.9.4, 1.9.8
of DBN B.2.6-163:2010, Tables 13.1, 13.2, 13.4, 13.8 of DBN B.2.6-198:2014)
and from EN 1993-1-1 Eurocode 3;
- Deflection
Limits — provides tables from SNiP 2.01.07-85* “Loads and
Actions” (or DSTU B. V.1.2-3:2006 when DBN B.2.6-163:2010 is selected),
with limitations on deflections of structural members.
The modes described below are functional, used to perform checks of
structural designs of steel structures and connections for compliance
with strength, stability, and flexibility requirements of design codes.
The modes are also capable of performing partial checks, if those are
of particular interest (such as the investigation of the load-bearing
capacity area by plotting the interaction curves). They include:
- Resistance
of Sections — enables to determine the utilization factors
of restrictions for any cross-section type available in the application
database, under the action of arbitrary forces; and to plot the interaction
curves for any admissible combination of the pairs of forces;
- Bolted
Connections — enables to determine the utilization factors
of restrictions for a certain set of structural designs of joints
with bolts with non-controlled tightening; and to plot the interaction
curves for any admissible combination of the pairs of forces;
- Friction
Connections — the mode is similar to the previous one but
works with a different set of structural designs of joints with high-strength
bolts with non-controlled tightening;
- Welded Connections
— enables to determine the utilization factors of restrictions for
a certain set of structural designs of joints with welded connections;
and to plot the interaction curves for any admissible combination
of the pairs of forces;
- Local
Stability — enables to check the local stability of webs
and flange plates of column, beam and beam-column structural members;;
the mode does not consider crane beams or beams with a web reinforced
by longitudinal stiffeners.
Finally, a complex check and selection of the cross-section can be performed
for some types of the most widespread structural members. These include:
- Trusses
— this mode enables to perform all the necessary strength and stability
checks of the truss members for the most common structural designs.
The work begins with determining the design values of internal forces
caused by the given vertical external loads. It is possible to find
the cross-section;
- Truss
Member — this mode enables to perform all the necessary
strength and stability checks for a separate bar member which is a
member of a truss structure. It is possible to find the cross-section;
- Beams
— this mode is similar to the previous one, but it deals with I-section
(both welded and rolled) or channel single-span beams with various
boundary conditions;
- Continuous
Beams — the mode implements the same functions as the Beam mode, but in application to
a multi-span structure (up to five spans are allowed) which can have
cantilevers at its ends. The available cross-sections include rolled
or welded I-beams and channels;
- Columns
— the mode is similar to the previous one, but it deals with columns
or posts of various cross-sections;
- Base Plates
— the mode deals with parts of a column base plate with various types
of bearing;
- Plate
Structures — the mode enables to determine the utilization
factors of restrictions for strength and stability of plate structures
of one of three types: round cylindrical or conical shells, or cylindrical
panels.
When you invoke any of these modes, a multi-tab dialog box appears where
you can enter data and browse the results.
The main window also contains a number of buttons which are common controls
for all working modes. These include the Exit,
Settings, and Help
buttons. The Help and Exit
buttons perform functions common for a Windows application: providing
reference information and finishing the current session respectively.
The Settings button invokes
the Application Settings dialog box where
you can customize the program.
The Menu button switches from
any mode to the main window.