The scope of this calculation module is to design a masonry column for given axial loads under
eccentric conditions taking the masonry properties and strength into consideration. The
application checks the compressive strength adequacy of the column.
The design module allows the user to capture the actual site or design requirements via various options such as,
Moreover, in order to help the user to better use the module material-based choices
are also given such as,
Type of bricks used and their properties
Clay and calcium silicate bricks
Autoclaved aerated concrete blocks
Aggregate concrete blocks (of various porosity)
Solid aggregate concrete blocks laid flat
Solid aggregate concrete blocks collar jointed
Masonry unit category (as defined in code provision)
Construction control category (as defined in code provision)
The slenderness ratio along major and minor axis is calculated.
The height and effective height of the column is equal, as the length of the column is taken as the distance between lateral supports.
The ratio of masonry unit height to least horizontal dimension of masonry unit and the ratio of masonry unit height to effective thickness of masonry wall has been limited to a definite range for different wall types.
The absolute value of load eccentricity should not be greater than half the value of column dimension along the respective direction.
The masonry column calculation is carried out only for short columns.
The capacity reduction factor is calculated from the absolute value of load eccentricities.
The design vertical load resistance is calculated after applying a compressive strength correction factor as the respective area of a column is small.
National Standards Available
"BS 5628-1:2005 - Code of practice for the use of masonry - Part 1: Structural use of unreinforced masonry."