How to make a box with the minimal height and vertical alignment inside the box?

Question

I need to set minimal table (one-row table) height, and valign content inside it. For this prupose i wrap tabular in parbox in tabular i have correct valign, and parbox gives me min height.

My question is - how to valign table in parbox (or to make it with me minipage, but then - how to make a min height)?

Here is the example code (it's the same in prev question :) ) : how to valign table (here it's in the header)

\documentclass{book}
\usepackage{fancybox,fancyhdr}
\usepackage[T1]{fontenc}
\usepackage[dvipsnames]{xcolor}

\usepackage[left=72pt,right=72pt,
    headheight=124pt,
    top=\dimexpr124pt+\headsep\relax,% <- added
    textheight =540pt
    ]{geometry}
\usepackage{array}


\newcolumntype{L}[2]{>{\raggedright\arraybackslash}{#2}{#1}}

\fancyhf{}
\fancyhead[C]{%
  \sbox{0}{\parbox{\textwidth}{\begin{tabular}{@{}L{\textwidth}{p}@{}}Non-disclosure agreement (NDA)\end{tabular}}}%
  \ifdim\dimexpr\ht0+\dp0<124pt \dp0\dimexpr124pt-\ht0\fi
  \makebox{\usebox{0}}%
}

\usepackage{lipsum}
\usepackage{showframe}
\begin{document}
\pagestyle{fancy}
\lipsum
\end{document}

Due to comments: common task is to make a table with one raw and several columns and valign-halign and fixed minimal height. In my example i use only one column to make task less complicated

Answer 1

Here is a simpler solution.

\documentclass{book}
\usepackage{fancybox,fancyhdr}
\usepackage[T1]{fontenc}
\usepackage[dvipsnames]{xcolor}

\usepackage[left=72pt,right=72pt,
    headheight=124pt,
    top=\dimexpr124pt+\headsep\relax,% <- added
    textheight =540pt
    ]{geometry}
\usepackage{array}


\newcolumntype{L}[2]{>{\raggedright\arraybackslash}{#2}{#1}}

\fancyhf{}
\fancyhead[C]{%
  %\raisebox{\dimexpr\headheight-\height}[\headheight][0pt]% top alignment
  %\raisebox{0pt}[0.5\headheight][0.5\headheight]% middle alignment
  \raisebox{\depth}[\headheight][0pt]% bottom alignment
  {\begin{tabular}{@{}L{\textwidth}{p}@{}}
  Non-disclosure agreement (NDA)\\
  %a\\b\\c\\d\\e\\f\\g\\h\\i\\j\\k\\l
  \end{tabular}}%
}

\usepackage{lipsum}
\usepackage{showframe}
\begin{document}
\pagestyle{fancy}
\lipsum
\end{document}