How to limit the height of a rotated text cell of a latex table

rotatingtables

I've created a table whose columns – except for the first one – only contain a single minus or plus sign, so can be very narrow.

The titles of these columns, however, are quite long. I couldn't quite fit them in in a nice way, so decided to rotate them 90 degrees.

Now it looks much better, but I have a new problem – I can't find a way to introduce line breaks in the titles, which makes them stretch the table height way beyond necessary:

compiled table

Is there a way to limit the height, or manually introduce line breaks into the titles?

Code for the table above:

\documentclass[british]{article}
\usepackage{array}
\usepackage{multirow}
\usepackage{rotating}

\usepackage{babel}
\begin{document}
\begin{table}[!tbh]
\begin{tabular}{|l|>{\centering}p{1.5cm}|>{\centering}p{1.5cm}|>{\centering}p{1.5cm}|>{\centering}p{1.5cm}|>{\centering}p{1.5cm}|}
\hline 
\multirow{2}{*}{\textbf{Strategy}} & \multicolumn{5}{c|}{\textbf{Requirement}}\tabularnewline
\cline{2-6} \cline{3-6} \cline{4-6} \cline{5-6} \cline{6-6} 
 & \begin{turn}{90}
First requirement
\end{turn} & \begin{turn}{90}
Second requirement
\end{turn} & \begin{turn}{90}
And so on
\end{turn} & \begin{turn}{90}
And so forth
\end{turn} & \begin{turn}{90}
And so fifth
\end{turn}\tabularnewline
\hline 
\hline 
\emph{Bla} & + & -- & -- & -- & +\tabularnewline
\hline 
\emph{Bla bla} & -- & -- & + & -- & +\tabularnewline
\hline 
\emph{Bla bla bla} & -- & + & + & -- & --\tabularnewline
\hline 
\end{tabular}

\caption{\textbf{This is a table.} It shows things.}
\end{table}

\end{document}

Best Answer

enter image description here

\documentclass[british]{article}
\usepackage{array}
\usepackage{multirow}
\usepackage{rotating}

\usepackage{babel}
\begin{document}
\begin{table}[!tbh]
\begin{tabular}{|l|>{\centering}p{1.5cm}|>{\centering}p{1.5cm}|>{\centering}p{1.5cm}|>{\centering}p{1.5cm}|>{\centering}p{1.5cm}|}
\hline 
\multirow{2}{*}{\textbf{Strategy}} & \multicolumn{5}{c|}{\textbf{Requirement}}\tabularnewline
\cline{2-6} \cline{3-6} \cline{4-6} \cline{5-6} \cline{6-6} 
 & \begin{turn}{90}
{\tabular{@{}l@{}}First\\ requirement\endtabular} 
\end{turn} & \begin{turn}{90}
{\tabular{@{}l@{}}Second\\ requirement\endtabular}
\end{turn} & \begin{turn}{90}
And so on
\end{turn} & \begin{turn}{90}
And so forth
\end{turn} & \begin{turn}{90}
And so fifth
\end{turn}\tabularnewline
\hline 
\hline 
\emph{Bla} & + & -- & -- & -- & +\tabularnewline
\hline 
\emph{Bla bla} & -- & -- & + & -- & +\tabularnewline
\hline 
\emph{Bla bla bla} & -- & + & + & -- & --\tabularnewline
\hline 
\end{tabular}

\caption{\textbf{This is a table.} It shows things.}
\end{table}

\end{document}

OR

\documentclass[british]{article}
\usepackage{array}
\usepackage{multirow}
\usepackage{rotating,booktabs}

\usepackage{babel}
\begin{document}
\begin{table}[!tbh]
\begin{tabular}{l>{\centering}p{1cm}>{\centering}p{1cm}>{\centering}p{1cm}>{\centering}p{1cm}>{\centering}p{1cm}}
\toprule
\multirow{2}{*}{\textbf{Strategy}} & \multicolumn{5}{c}{\textbf{Requirement}}\tabularnewline
\cline{2-6} \cline{3-6} \cline{4-6} \cline{5-6} \cline{6-6} 
 & \begin{turn}{90}
{\tabular{@{}l@{}}First\\ requirement\endtabular} 
\end{turn} & \begin{turn}{90}
{\tabular{@{}l@{}}Second\\ requirement\endtabular}
\end{turn} & \begin{turn}{90}
And so on
\end{turn} & \begin{turn}{90}
And so forth
\end{turn} & \begin{turn}{90}
And so fifth
\end{turn}\tabularnewline
\hline 
\hline 
\emph{Bla} & + & -- & -- & -- & +\tabularnewline
\hline 
\emph{Bla bla} & -- & -- & + & -- & +\tabularnewline
\hline 
\emph{Bla bla bla} & -- & + & + & -- & --\tabularnewline
\bottomrule
\end{tabular}

\caption{\textbf{This is a table.} It shows things.}
\end{table}

\end{document}

enter image description here

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