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# cba - continuous beam analysis

## cbeam_class.cpp - continuous beam solver:

SetGeometry(L,E,I,R)
- L vector of span lengths; required, returns false if not supplied
- E double elastic modulus; not necessarily, default=1
- I vector of moments of inertia; not necessarily, default=1
- R vector of constraints def/rot; not necessarily, default=(-1,0)
SetLoads(LM)
- LM load matrix
every vector of loads has to have the following parts
LM[i,0] = number of span to be loaded
LM[i,1] = load type:
1 - uniformly distributed load
2 - point load
3 - partial udl
4 - moment load
5 - trapezoidal load
6 - partial triangular load
LM[i,2] = value of permanent load (can be zero)
LM[i,3] = value of live load (can be zero)
LM[i,4] = start for load type 2-4
LM[i,5] = length for load type 3
SetGamma(gmax,qmax,gmin,qmin)
- set the load design factors for permanent/live loads
Solve()
- solves the continuous beam problem for the given geometry, loads and factors
GetResults()
- returns [7,npts*nf] vector with results along the beam
[x Mmax Mmin Vmax Vmin dmax dmin]
GetMax()
- returns [7,nf] vector with max/min results per span
[x(Mmax) Mmax Mmin Vmax Vmin dmax dmin]
GetReaction()
- returns [2,nf+1] vector with max/min support reactions
[Rmax Rmin]