clc clear %input dimensions b=input(\'insert B1 in in:\'); t=input(\'insert t1 i

Question

clc
clear
%input dimensions
b=input('insert B1 in in:');
t=input('insert t1 in in:');
B=input('insert B2 in in:');
T=input('insert t2 in in:');
K=input('insert t3 in in:');
h=input('insert H in ft:');
stress=input('insert stress in ksi:');

n=input('insert number of spans:');

%loop for length of each span

%loop code here
%until i==n input length of span
% insert length
%i=i+1
%does i==n
%if no, insert next length
%if yes, end loop

%solve for area
area=(b*T)+t*(h-T-K)+(K*B);

%solve for y centroid
y=(K*B*K/2)+t*(h-b-B)*(K+(h-b-B)/2)+T*b*(h-T/2);
y=y/area;

%solve for I
%if B2>B1
I=B*h^3/12-2*(B/2-t/2)*((h-K-T)^3)/12-(B-b)*(T^3)/12

%if B1>B2
I=b*h^3/12-2*(b/2-t/2)/12*(h-K-T)^3-(b-B)/12*(K)^3

%solve for section modulus s=I/y

%solve for mp mp=s*stress

% solve for end collapse loads

%solve for collapse loads of inner spans

%display results

EXAMPLE

Explanation / Answer

SAVE THE CODE IN MATLAB AND GET THE RESUTLS-

clc

clear

close all;

b=input('Insert B1 in in:');

t=input('Insert t1 in in:');

B=input('Insert B2 in in:');

T=input('Insert t2 in in:');

K=input('Insert t3 in in:');

h=input('Insert H in ft:');

Stress=input('Insert stress in in:');

area=(b*T)+t*(h-T-K)+(K*b);

% Solve for y Centroid

y=(K*B*K/2)+t*(h-b-B)*(K+(h-b-B)/2)+T*b*(h-T/2);

if B>b

    I=(B*h^3/12)-(2*(B/2-t/2)^3)/(12-(B-b)+(T)^3/12);

else

    I=(b*h^3/12)-(2*(b/2-t/2)^3)/(12*(h-K-T)^3-(b-B)/12*(K)^3);

end

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