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//example 14.33
//design Laecey regime channel
clc;funcprot(0);
//given
A=100000; //culturable area(hectare)
IR=0.4; //intensity of irrigation in kharif season
IK=0.3; //intensity of irrigation in rabi season
OR=1800; //outlet discharge factor in kharif season
OK=800; //outlet discharge factor in kharif season
l=0.1; //conveyance loss
md=0.328; //average diameter of material
AR=A*IR; //area under rabi
AK=A*IK; //area under kharif
Qr=AR/OR;
Qk=AK/OK;
Q=1.1*Qk;
f=1.76*(md)^0.5;
V=(Q*f^2/144)^(1/6);
A=Q/V;
P=4.75*(Q)^0.5;
D=(P-(P^2-6.944*A)^0.5)/3.472;
B=P-2.236*D;
S=f^(5/3)/(3340*Q^(1/6));
B=round(B*10)/10;
D=round(D*100)/100;
mprintf("\nBed slope=%f.",S);
mprintf("\nWidth of channel section=%f m.",B);
mprintf("\nDepth of channel section=%f m.",D);
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