This figure provides a two$-$span frame with all the characteristic permanent and

variable actions. Span A is for a shopping mall and Span B is for storage. If the

bending moment at the mid$-$span of Span A is considered to be designed, please draw

the load combination with proper partial safety factor and combination factor for the

following cases. It is indicated that $P$ is a permanent action, and $Q_A$ and $Q_B$ are

variable actions $W$ js the wind action which is considered as an unfavourable variable

action for the design of bending moment at the mid$-$span of Span A$.$

The partial safety factor ${}_G$ is $1\mathrm{.}35$ and $1\mathrm{.}0$ for favourable and unfavourable permanent

actions, respectively. The partial safety factor ${}_Q$ is $1\mathrm{.}5$ and $0\mathrm{.}0$ for favourable and

for storage area and shopping area. The combination factor ${}_0$ is $0\mathrm{.}5$ for wind loads.

Based on stress$-$stain relationship of concrete for nonlinear structural analysis,

please provide the values of stress for the concrete with $f_{ck}=40$MPa at the strain of

$1\mathrm{.}0\%,2\mathrm{.}0\%$ and $3\mathrm{.}5\%.$

What are the values of $f_{cd}$ and $f_{yd}$ for the concrete with the cube strength of $40$ MPa

and for the steel with the characteristic strength of $500$ MPa for the design for

ultimate limit state?

Determine the shrinkage strain of concrete ${}_{cs}$ at the $365$ days after curing based on

EC$2.$ The following information is given: C$30/37,$ outdoor condition with relative

humidity $80\%,$ cement class S$,$ and cross$-$section of $400mm800mm.$