Task $1$

Consider the following beam: p$=10$kN$/$m $($variable$)$g$=10$kN$/$m $($permanent$),$b$=400$mm$,$h$=600$mm d$=520$mm$,6$x$32,$L$=12$m$,$load $=$p$+$q$,$Materials: B$55,$B$500$C

The following information is provided:

The permanent load will be applied after $5$days$.$

Only $20\%$of the variable load $($nyttelast$)$will act continuously on the beam; this portion of the

load will be applied after $10$days$.$

$80\%$of the variable load will only be applied for short$-$term durations.

The beam will be installed indoors, with all sides of the cross$-$section exposed to drying.

The allowable deflection limit is L$/250.$

The cement type used is S $.$

Determine the beam's utilization under Serviceability Limit State $($SLS$)$conditions with respect to

deflection.

The correct answer: approximately $52$mm

Task $2$

The beam mentioned above does not meet the SLS deflection criteria, although it has been correctly

designed for bending and shear capacity. Since it's now too late to adjust the beam dimensions$-$

technical drawings are finalized, and construction will begin soon$-$what measures can you, as the

designer, take to ensure deflections remain within acceptable limits$?$

Task $3$

Review the beam from Task $1.$An agreement with the construction team has been reached to delay

applying the permanent load and $20\%$of the variable load to reduce excessive deflection and meet

SLS criteria. Identify the earliest possible time to apply these loads. Task $1$

Consider the following beam:

The following information is provided:

$-$ The permanent load will be applied after $5$ days.

$-$ Only $20\backslash \%$ of the variable load $($nyttelast$)$ will act continuously on the beam; this portion of the load will be applied after $10$ days.

$-\backslash (80\backslash \%\backslash )$ of the variable load will only be applied for short$-$term durations.

$-$ The beam will be installed indoors, with all sides of the cross$-$section exposed to drying.

$-$ The allowable deflection limit is L$/250.$

$-$ The cement type used is S $.$

Determine the beam's utilization under Serviceability Limit State $($SLS$)$ conditions with respect to deflection.

The correct answer: approximately $52$ mm

Task $2$

The beam mentioned above does not meet the SLS deflection criteria, although it has been correctly designed for bending and shear capacity. Since it's now too late to adjust the beam dimensionstechnical drawings are finalized, and construction will begin soon$-$what measures can you, as the designer, take to ensure deflections remain within acceptable limits$?$

Task $3$

Review the beam from Task $1.$ An agreement with the construction team has been reached to delay applying the permanent load and $20\backslash \%$ of the variable load to reduce excessive deflection and meet SLS criteria. Identify the earliest possible time to apply these loads.