% acronyms  & abbreviations
\usepackage{acro}
\DeclareAcroListStyle{mystyle}{table}{ % define custom acro list style
	table=tabular, % use tabluar template
	table-spec=@{}p{1.5cm}p{\dimexpr\textwidth-2cm-2\tabcolsep}@{}} % set constant space (even with multiple lists) between acronym and axplanation
\acsetup{
	list-heading=subsection*,
	hyperref=true,
	list-style=mystyle,
	extra-style=plain}

%%%%%%%%%%%%%%%%% CLASS Abbreviations - abb
\DeclareAcronym{bst}{short=BST, long=Institute for building mechanics and steel construction, extra=at the TUHH, class=abb}
\DeclareAcronym{co2}{short=$CO_2$, long=carbon dioxide, class=abb}
\DeclareAcronym{cov}{short=COV, long=coefficient of variation, class=abb}
\DeclareAcronym{ects}{short=ECTS, long=European Credit Transfer and Accumulation System, class=abb}
\DeclareAcronym{ec5}{short=EC5, long = Eurocode 5, extra=\cite{ec5}, class=abb}
\DeclareAcronym{eta}{short= ETA, long = European Technical Approval, class=abb}
\DeclareAcronym{ethz}{short=ETHZ, long=Swiss Federal Insitute of Technology Zurich, class=abb}
\DeclareAcronym{glulam}{short=glulam, long=glued laminated timber, class=abb}
\DeclareAcronym{ibk}{short=IBK, long=Institute of Structural Engineering, extra= at the ETHZ, class=abb}
\DeclareAcronym{jcss}{short=JCSS, long=Joint Committee on Structural Safety \cite{jcss-timber}, class=abb}
\DeclareAcronym{lvl}{short=LVL, long=laminated veneer lumber, class=abb}
\DeclareAcronym{mc}{short=MC, long=moisture content, extra=[\%], class=abb}
\DeclareAcronym{mor}{short=MOR, long=modulus of rupture, extra=[\si{\f}], class=abb}
\DeclareAcronym{rh}{short=RH, long=relative humidity, extra=[\%], class=abb}
\DeclareAcronym{sc}{short=SC, long=service class, extra=referring to a \acs{mc} and \acs{rh}, class=abb}
\DeclareAcronym{sls}{short=SLS, long=serviceablility limit state, class=abb}
\DeclareAcronym{std}{short=STD, long=standard deviation, class=abb}
\DeclareAcronym{tbr}{short=TBR, long=threaded beech rod, class=abb}
\DeclareAcronym{tb}{short=TB, long=top-boom, class=abb}
\DeclareAcronym{bb}{short=BB, long=bottom-boom, class=abb}
\DeclareAcronym{ts1}{short=TS1, long=test series 1, extra=TBR-withdrawal/indentation tests, class=abb}
\DeclareAcronym{ts2}{short=TS2, long=test series 2, extra=truss bending tests, class=abb}
\DeclareAcronym{tsr}{short=TSR, long=threaded steel rod, class=abb}
\DeclareAcronym{sts}{short=STS, long=self tapping screw, class=abb}
\DeclareAcronym{tuhh}{short=TUHH, long=Technical University Hamburg, class=abb}
\DeclareAcronym{uls}{short=ULS, long=ultimate limit state, class=abb}

%%%%%%%%%%%%%%%%% CLASS Upper-case Latin letters - ull
\DeclareAcronym{Am}{short=$A_{mean}$, long=mean area, extra=[\si{\a}], class=ull}
\DeclareAcronym{D}{short=$D$, long=truss-section-length, extra=[\si{\mm}], class=ull}
\DeclareAcronym{E}{short=$E$, long=Young's modulus, extra=[\si{\f}], class=ull}
\DeclareAcronym{E0m}{short=$E_{0,mean}$, long=mean Young's modulus parallel to the grain, extra=[\si{\f}], class=ull}
\DeclareAcronym{E005}{short=$E_{0,05}$, long=characteristic Young's modulus parallel to the grain, extra=[\si{\f}], class=ull}
\DeclareAcronym{E90m}{short=$E_{90,mean}$, long=mean Young's modulus perpendicular to the grain, extra=[\si{\f}], class=ull}
\DeclareAcronym{Es}{short=$E_s$, long=mean Young's modulus of steel, extra=[\si{\f}], class=ull}
\DeclareAcronym{Fh}{short=$F_h$, long=half four-point bending force, extra=[\si{\kN}], class=ull}
\DeclareAcronym{Ft}{short=$F_t$, long=total four-point bending force, extra=[\si{\kN}], class=ull}
\DeclareAcronym{Faxu}{short=$F_{ax,u}$, long=withdrawal capacity, extra=[\si{\kN}], class=ull}
\DeclareAcronym{Fest}{short=$F_{est}$, long=estimated ultimate force, extra=[\si{\kN}], class=ull}
\DeclareAcronym{G}{short=$G$, long=shear modulus, extra=[\si{\f}], class=ull}
\DeclareAcronym{Gm}{short=$G_{mean}$, long=mean shear modulus, extra=[\si{\f}], class=ull}
\DeclareAcronym{G05}{short=$G_{05}$, long=characteristic shear modulus, extra=[\si{\f}], class=ull}
\DeclareAcronym{H}{short=$H$, long=height, extra=of the truss model [\si{\mm}], class=ull}
\DeclareAcronym{I}{short=$I$, long=moment of inertia, extra=[\si{\imm}], class=ull}
\DeclareAcronym{L}{short=$L$, long=span, extra=of the truss model [\si{\mm}], class=ull}
\DeclareAcronym{Kw}{short=$K_w$, long=withdrawal stiffness, extra=[\si{\c}], class=ull}
\DeclareAcronym{V}{short=$V$, long=volume, extra=[\si{\V}], class=ull}

%%%%%%%%%%%%%%%%% CLASS Lower-case Latin letters - lll
\DeclareAcronym{a1}{short=$a_1$, long=minimum distance between screw axes parallel to the grain, extra=[\si{\mm}]}
\DeclareAcronym{a1cg}{short=$a_{1,CG}$, long=minimum distance between screw axis and edge parallel to the grain, extra=[\si{\mm}]}
\DeclareAcronym{a2}{short=$a_{2}$, long=minimum distance between screw axes perpendicular to the grain, extra=[\si{\mm}]}
\DeclareAcronym{a2cg}{short=$a_{2,CG}$, long=minimum distance between screw axis and edge perpendicular to the grain, extra=[\si{\mm}]}
\DeclareAcronym{d1}{short= $d_1$, long=core diameter, extra=[\si{\mm}] , class=lll}
\DeclareAcronym{d}{short= $d$, long=outer-thread diameter, extra=[\si{mm}] , class=lll}
\DeclareAcronym{fax}{short=$f_{ax}$, long=withdrawal strength, extra=[\si{\f}], class=lll}
\DeclareAcronym{faxk}{short=$f_{ax,k}$, long=characteristic withdrawal strength, extra=[\si{\f}], class=lll}
\DeclareAcronym{fax0}{short=$f_{ax,0}$, long=withdrawal strength parallel to the grain, extra=of the surrounding wood [\si{\f}], class=lll}
\DeclareAcronym{fax0k}{short=$f_{ax,0,k}$, long=characteristic withdrawal strength parallel to the grain, extra=of the surrounding wood [\si{\f}], class=lll}
\DeclareAcronym{fax90}{short=$f_{ax,90}$, long=withdrawal strength perpendicular to the grain, extra=of the surrounding wood [\si{\f}], class=lll}
\DeclareAcronym{fax90k}{short=$f_{ax,90,k}$, long=characteristic withdrawal strength perpendicular to the grain, extra=of the surrounding wood [\si{\f}], class=lll}
\DeclareAcronym{fc0k}{short=$f_{c,0,k}$, long=characteristic compressive strength, extra=parallel to the grain [\si{\f}], class=lll}
\DeclareAcronym{fc90k}{short=$f_{c,90,k}$, long=characteristic compressive strength perpendicular to the grain, extra=[\si{\f}], class=lll}
\DeclareAcronym{fmk}{short=$f_{m,k}$, long=characteristic bending strength, extra=parallel to the grain [\si{\f}], class=lll}
%\DeclareAcronym{fR}{short=$f_r$, long=rolling shear strength perpendicular to the grain with loading perpendicular to the grain, extra=[\si{\f}], class=lll}
\DeclareAcronym{ft0k}{short=$f_{t,0,k}$, long=characteristic tensional strength, extra=parallel to the grain [\si{\f}], class=lll}
\DeclareAcronym{ft90k}{short=$f_{t,90,k}$, long=characteristic tensionalstrength perpendicular to the grain, extra=[\si{\f}], class=lll}
%\DeclareAcronym{fv}{short=$f_v$, long=shear strength, extra=parallel and perpendicular to the grain with loading parallel to grain [\si{\f}], class=lll}
\DeclareAcronym{fvk}{short=$f_{v,k}$, long=characteristic shear strength, extra=parallel and perpendicular to the grain [\si{\f}], class=lll}
\DeclareAcronym{k}{short=$k$, long=factor \cite{dineniso8970}, extra=[-], class=lll}
\DeclareAcronym{kh}{short=$k_h$, long=parameter, extra=for the increase of $f_{m,k}$ and $f_{t,0,k}$ due to the size effect of wood [-], class=lll}
\DeclareAcronym{ks}{short=$k_s$, long=withdrawal stiffness, extra=[\si{\c}], class=lll}
\DeclareAcronym{ksn}{short=$k_s(n)$, long=factor for the calculation of characteristic values for initial tests, extra=[-], class=lll}
\DeclareAcronym{lef}{short=$l_{ef}$, long=penetration depth, extra=[\si{\mm}], class=lll}
\DeclareAcronym{l}{short=$l$, long=length, extra=[\si{\m}], class=lll}
\DeclareAcronym{m}{short=$m$, long=mass, extra=[\si{\kilogram}], class=lll}
\DeclareAcronym{n}{short=$n$, long=number of screws, extra=which form a connection [-], class=lll}
\DeclareAcronym{nd}{short=$n_d$, long=grade of statically undetermination, extra=[-], class=lll}
\DeclareAcronym{o}{short=$o$, long=number of truss sections, extra=in the truss [-], class=lll}
\DeclareAcronym{nef}{short=$n_{ef}$, long=effective number of screws, extra=which form a connection [-], class=lll}
\DeclareAcronym{i}{short=$i$, long=number of parallel TBRs, extra=perpendicular to the grain [-], class=lll}
\DeclareAcronym{s}{short=$s$, long=number of specimens, extra=subjected to an identical test [-], class=lll}
\DeclareAcronym{tc}{short=$t_c$, long=thread cog, extra=[\si{\mm}], class=lll}
\DeclareAcronym{tg}{short=$t_g$, long=thread gap, extra=[\si{\mm}], class=lll}
\DeclareAcronym{tp}{short=$t_p$, long=thread pitch, extra=[\si{\mm}], class=lll}
\DeclareAcronym{vimod}{short=$v_{i,mod}$, long=modified initial displacement, extra=according to EN 26891 [\si{\mm}], class=lll}
\DeclareAcronym{w}{short=$w$, long=deflection, extra=[\si{\mm}], class=lll}

%%%%%%%%%%%%%%%%% CLASS Upper-case Greek letters - ugl

%%%%%%%%%%%%%%%%% CLASS Lower-case Greek letters - lgl
\DeclareAcronym{al}{short=$\alpha$, long=angle, extra=between the axis of an axially loaded connector and the grain of the surrounding wood [\si{\deg}], class=lgl}
\DeclareAcronym{al90}{short=$\alpha_90$, long=differential swelling and shrinkage coefficient perpendicular to the grain, extra=[\si{\pp}], class=lgl}
\DeclareAcronym{all}{short=$\alpha_l$, long=differential swelling and shrinkage coefficient parallel to the grain, extra=[\si{\pp}], class=lgl}
\DeclareAcronym{alt}{short=$\alpha_t$, long=differential swelling and shrinkage coefficient in tangential direction, extra=[\si{\pp}], class=lgl}
\DeclareAcronym{alr}{short=$\alpha_r$, long=differential swelling and shrinkage coefficient in radial direction, extra=[\si{\pp}], class=lgl}
\DeclareAcronym{beta}{short=$\beta$, long=vertical inclination, extra=of the truss [\si{\deg}], class=lgl}
\DeclareAcronym{dax}{short=$\delta_{ax}$, long=displacement in axial direction, extra=[\si{\mm}], class=lgl}
\DeclareAcronym{rho}{short=$\rho$, long=wood density, extra=[\si{\den}], class=lgl}
\DeclareAcronym{rhom}{short=$\rho_m$, long=mean wood density, extra=[\si{\den}], class=lgl}
\DeclareAcronym{rhok}{short=$\rho_c$, long=characteristic wood density, extra=[\si{\den}], class=lgl}
\DeclareAcronym{rhoa}{short=$\rho_a$, long=associated wood density, extra=[\si{\den}], class=lgl}