%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 6-7-30 on page 437.
%% 
%%  Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss 
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 

\documentclass{ttctexagray}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{207.83385pt}
\StartShownPreambleCommands
\usepackage{pstricks,pst-stru}
\StopShownPreambleCommands
\begin{document}
\psset{arrowsize=0.8mm,arrowinset=0}
\begin{pspicture}(-1,-4)(9,2)
 \pnode(0,0){A}\pnode(2,0){B}\pnode(8,0){C}
 \rput{0}(C){\hinge}\rput{0}(B){\roller}
 \psline[linecolor=red,fillcolor=yellow,fillstyle=solid](0,0)(8,0)(8,1)(0,0)
 \multido{\nStart=1.00+0.025}{-37}{\psArrowCivil[RotArrows=0,
                    length=\nStart,start=\nStart,linecolor=magenta](A)(C){}}
 \rput(8.3,0.4){\large p}\rput(0,-0.4){\Large A}\rput(2,-1){\Large B}
 \rput(8.3,-0.6){\Large C}
 \pcline[offset=0,linecolor=blue]{|-|}(0,-3)(2,-3)
   \lput*{:U}{\bf $\frac{l}{3}$}
 \pcline[offset=0,linecolor=blue]{|-|}(2,-3)(8,-3)\lput*{:U}{\bf $l$}
 \def\MflettAB#1#2#3{#1 #2 div -.125 mul x mul x mul x mul #3 mul neg}
 \pscustom[linecolor=blue,linewidth=1pt,fillstyle=hlines]{%
   \psplot[]{0}{2}{\MflettAB{6}{6}{0.15}}
   \psline[](2,0)(0,0)}
 \def\TaglioAB#1#2#3{#1 #2 div -.375 mul x mul x mul #3 mul}
 \pscustom[linecolor=green,linewidth=1pt,fillstyle=crosshatch]{%
   \psplot[]{0}{2}{\TaglioAB{6}{6}{0.15}}
   \psline[](2,0)(0,0)}
 \def\MflettBC#1#2#3{#1 #2 div -.125 mul x mul x mul x mul
   #1 3.375 div #2 mul x mul add
   #1 10.125 div #2 mul #2 mul sub #3 mul neg}
 \pscustom[linecolor=blue,linewidth=1pt,fillstyle=hlines]{%
   \psplot[]{2}{8}{\MflettBC{6}{6}{0.15}}
   \psline[](8,0)(2,0)}
 \def\TaglioBC#1#2#3{#1 #2 div -.375 mul x mul x mul
                     #1 3.375 div #2 mul add #3 mul}
 \pscustom[linecolor=green,linewidth=1pt,fillstyle=crosshatch]{%
   \psplot[]{2}{8}{\TaglioBC{6}{6}{0.15}}
   \psline[](8,0)(2,0)(2,1.4)}
 \psline[linewidth=1.5pt](0,0)(8,0)  % Printing beam AC after diagrams BM/S
 \rput(3,1.6){\em {\scriptsize Shear diagram (green boundary)}}
 \rput[lb](0,-2.3){\em {\scriptsize Bending Moment diagram (blue boundary)}}
 \rput[lb](0,-2.6){\scriptsize [assumed positive downwards]}
 \rput(5,-1){\bf {\large +}}\rput(2.5,0.6){\bf {\large +}}
 \rput(7.7,-1.3){\bf {\Large -}}
\end{pspicture}
\end{document}