CrossStep class
This class defines a step of the Cross Process for continuous beam.
See definition of CrossSolver class.
Contents
Author
Luiz Fernando Martha
History
@version 1.00
Initial version: August 2026
Initially prepared for the course CIV 2801 - Fundamentos de Computação Gráfica, 2025, second term, Department of Civil Engineering, PUC-Rio.
Class definition
classdef CrossStep < handle
See documentation onhandle super-class.
Public attributes
properties (SetAccess = public, GetAccess = public)
n = 0; % index of an interior node that is balanced in a step
bml = 0; % balancing moment at left of node
bmr = 0; % balancing moment at right of node
tml = 0; % carry-over moment at left of node
tmr = 0; % carry-over moment at right of node
end
Constructor method
methods
%------------------------------------------------------------------
function step = CrossStep(n,bml,bmr,tml,tmr)
if (nargin > 0)
step.n = n;
step.bml = bml;
step.bmr = bmr;
step.tml = tml;
step.tmr = tmr;
end
end
end
Public methods
methods
%------------------------------------------------------------------
% Prints analysis results.
% Input arguments:
% out: integer identifier of the output text file
function step = printStep(step,out,decplc)
fprintf(out, '\n________________ C R O S S S T E P ________________\n');
fprintf(out, ' NODE Left Transf.[kNm] Left Bal.[kNm] Right Bal.[kNm] Right Transf.[kNm]\n');
tml_txt = sprintf('%.*f',decplc,step.tml);
bml_txt = sprintf('%.*f',decplc,step.bml);
bmr_txt = sprintf('%.*f',decplc,step.bmr);
tmr_txt = sprintf('%.*f',decplc,step.tmr);
fprintf(out, '%4d %10s %20s %18s %18s\n', step.n, tml_txt, bml_txt, bmr_txt, tmr_txt);
end
%------------------------------------------------------------------
% Cleans data structure of a CrossStep object.
function step = clean(step)
step.n = 0;
step.bml = 0;
step.bmr = 0;
step.tml = 0;
step.tmr = 0;
end
end
end