Pagebreak destroys page layout

I have the following code to add an appendix to my document:

``````\appendix{}
\chapter{Questionnaire}
\pagebreak
\includegraphics[width=1\textwidth]{questionnaire1.png}
\includegraphics[width=1\textwidth]{questionnaire2.png}
\includegraphics[width=1\textwidth]{questionnaire3.png}
\includegraphics[width=1\textwidth]{questionnaire4.png}
\includegraphics[width=1\textwidth]{questionnaire5.png}
\includegraphics[width=1\textwidth]{questionnaire6.png}
\includegraphics[width=1\textwidth]{questionnaire7.png}
``````

The problem is, the linebreak is destroying my layout. The next pictures shows how it should look like

But unfortunately it looks like this

So I dont know why the pagebreak destroys the layout. Any hints?

-
It looks like you are using some custom chapter style, maybe this is a problem. Wouldn't \newpage instead of \pagebreak do the trick? Also, depending on the size of your pictures, you have to but an empty line between the \includegraphics commands to allow a break between the pictures –  Martin H Mar 14 '11 at 12:51
The word "site" in your question title confuses me. Aren't you talking about page layout? –  Matthew Leingang Mar 14 '11 at 13:26
@Matthew: I guess "site" is inspired by the German "Seite", meaning "page". –  Hendrik Vogt Mar 14 '11 at 13:31
@Hendrik Vogt: Yes that was the problem ;) –  RoflcoptrException Mar 14 '11 at 13:33
@Martin H Thanks this solved the problem. –  RoflcoptrException Mar 14 '11 at 13:36
use `\newpage` instead of `\pagebreak`, then a vertical formatting is ignored. You can also insert a `\vfill` before `\newpage` to be sure, that an internally `\raggedbottom` has no effect.