Analysis of wooden structural members

The Decor software application does an analysis and checks of wooden structural members and joints for compliance with regulations of SNiP II-25-80 "Wooden constructions" or SP 64.13330.2011. The application also provides reference data most often used when designing wooden constructions. Working modes are activated using their particular buttons; they can be classified into reference/information modes (the Information group) or analytic modes (the Analysis modes)..

Here is the set of reference/information modes:

Deflection and strain limits - helps browse limit values of the deflections in wooden structural members and limit values of strains in joints, as shown in Tables 15, 16 of SNiP II-25-80;

Densities - provides data concerning the density of wood;

Range of timber - provides data concerning the sizes of softwood timber according to GOST 24454-80;

Design strength - calculates the design strength for a type of stress and strain distribution selected by the user;

Wood - provides data concerning the maximum allowed humidity of wood, the types and brands of adhesives;

Limit slenderness - provides information about the limit slenderness ratios of structural members.

The Analysis group of modes performs the following actions:

Geometrical characteristics - calculates the geometrical characteristics of a cross-section;

Effective length - implements recommendations of the code for calculation of effective length values;

Joint resistance - calculates limitation utilization factors for scarf/notch/cog joints and dowel pin joints;

Section resistance - calculates limitation utilization factors for any cross-section type suggested by the application under action of any forces; this mode also builds curves of interaction for any admissible combinations of stress couples;

Continuous girders - analyzes a continuous girder for limit states of first and second group;

Suspended spans - analyzes a suspended span together with its supporting cantilevers under a uniformly distributed load for limit states of first and second group;

Beams - analyzes a single-span beam with various conditions of support for limit states of first and second group;

Columns - this mode performs a structural appraisal of columns or stanchions;

Truss element - this mode does a structural appraisal of a separate element of a truss;

Trusses - this mode works with structural designs most frequently used in practice; it implements all kinds of appraisals of strength and stability of truss elements. The work begins with determining values of design stresses caused by given vertical external loads.


Decor functions under Windows Vista/7/8/10 operating environment. User dialogue techniques and controls are organized in complete conformance to this environment.

Help (Reference information)

The application is provided with a detailed reference help which includes descriptions of the user interface and conventions of using the application.

Verification examples