Horizontal line writing over text in multicolumn

Question

So, I'm trying to write a Table with some information and for the first time in my life im using multirow and multicolumn. Everything was going kind of ok until I decided to use \hline and, as you can see in the code, one of the horizontal lines is going through a multicolumn and writing over my text.

Can someone tell me how I can prevent this from happening?

\begin{table}[]
\begin{tabular}{|c|c|c|}
\hline
\multicolumn{2}{|c|}{\textbf{Item}}                             & \textbf{CPU33} \\ \hline
\multicolumn{2}{|c|}{Dimensiones}                      & A     \\ \hline
\multicolumn{2}{|c|}{Consumo}                          & B     \\ \hline
\multirow{4}{*}{Ambiente de operación} & Temperatura & C     \\ \hline
                                       & Ruido       & D     \\ \hline
                                       & Vibración   & E     \\ \hline
                                       & Schock      & F     \\ \hline
\end{tabular}
\end{table}

Answer 1

You can use the \cline command to draw horizontal line in only two cells. As the code is shown below:

\documentclass{article}
\usepackage{multirow}
\begin{document}
    \begin{table}
    \begin{tabular}{|c|c|c|}
        \hline
        \multicolumn{2}{|c|}{\textbf{Item}}                             & \textbf{CPU33} \ \hline
        \multicolumn{2}{|c|}{Dimensiones}                      & A     \ \hline
        \multicolumn{2}{|c|}{Consumo}                          & B     \ \hline
        \multirow{4}{*}{Ambiente de operación} & Temperatura & C  \ \cline{2-3}
        & Ruido       & D     \\cline{2-3}
        & Vibración   & E     \ \cline{2-3}
        & Schock      & F     \ \hline
    \end{tabular}
\end{table}
\end{document}

The table is

You can also refer to the following link How can I draw a horizontal line spanning only some of the table cells?

Answer 2

In order to make sure a horizontal line does not cross a \multirow cell, you can use \cline instead of \hline. Specify which columns your line should appear in.

Additionally, I have added the cellspace package in order to allow for a small vertical white space above and below of the text in each cell. In the third example, I also included a table using no vertical lines, no \multirow and just a fex horizontal lines from the booktabs package:

\documentclass{article}
\usepackage[column=0]{cellspace}
\setlength{\cellspacetoplimit}{3pt}
\setlength{\cellspacebottomlimit}{\cellspacetoplimit}
\usepackage{multirow}
\usepackage{booktabs} % only used in third example
\begin{document}
\begin{table}
    \begin{tabular}{|0c|0c|0c|}
        \hline
        \multicolumn{2}{|0c|}{\textbf{Item}}                    & \textbf{CPU33} \ \hline
        \multicolumn{2}{|0c|}{Dimensiones}                      & A              \ \hline
        \multicolumn{2}{|0c|}{Consumo}                          & B              \ \hline
        \multirow{4.25}{*}{Ambiente de operación} & Temperatura & C              \ \cline{2-3}
                                               & Ruido          & D              \ \cline{2-3}
                                               & Vibración      & E              \ \cline{2-3}
                                               & Schock         & F              \ \hline
    \end{tabular}
\end{table}
\begin{table}
    \begin{tabular}{|0c|0c|0c|}
        \hline
        \multicolumn{2}{|0c|}{\textbf{Item}}                    & \textbf{CPU33} \ \hline
        \multicolumn{2}{|0c|}{Dimensiones}                      & A              \ \hline
        \multicolumn{2}{|0c|}{Consumo}                          & B              \ \hline
        \multirow{4.25}{2cm}{Ambiente de operación} & Temperatura & C              \ \cline{2-3}
                                               & Ruido          & D              \ \cline{2-3}
                                               & Vibración      & E              \ \cline{2-3}
                                               & Schock         & F              \ \hline
    \end{tabular}
\end{table}
\begin{table}
    \begin{tabular}{lc}
        \toprule
        Item                  & CPU33 \ 
        \midrule
        Dimensiones           & A     \ 
        Consumo               & B     \ 
        Ambiente de operación         \
        \quad Temperatura     & C     \ 
        \quad Ruido           & D     \ 
        \quad Vibración       & E     \ 
        \quad Schock          & F     \
        \bottomrule 
    \end{tabular}
\end{table}
\end{document}

Answer 3

You can easily make that table with {NiceTabular} of nicematrix. The key hvlines draws all the rules excepted in the blocks (created by \Block).

\documentclass{article}
\usepackage{nicematrix}
\NiceMatrixOptions{cell-space-bottom-limit=3pt,cell-space-top-limit=3pt}
\begin{document}
\begin{table}
\begin{NiceTabular}{lcc}[hvlines]
\Block{1-2}{\textbf{Item}}           &             & \textbf{CPU33} \ 
\Block{1-2}{Dimensiones}             &             & A              \ 
\Block{1-2}{Consumo}                 &             & B              \ 
\Block{4-1}{Ambiente\ de operación} & Temperatura & C \ 
                                     & Ruido       & D \ 
                                     & Vibración   & E \ 
                                     & Schock      & F \ 
\end{NiceTabular}
\end{table}
\end{document}

You need several compilations.