updated structures OER layout

book/contents/structures.md

@@ -29,7 +29,7 @@ The following topics on **structures** are considered prerequisite knowledge for
 |:------|:--------|:------------------|:---------------------------|
 | Concrete Structures <br> [CTB2220](https://studiegids.tudelft.nl/a101_displayCourse.do?course_id=61996)       | Material characteristics of concrete and reinforcement steel <details><summary>Student can:</summary>- Identify Concrete and steel design properties according to the Eurocode </details>    |- [Properties for concrete ](https://eurocodeapplied.com/design/en1992/concrete-design-properties)[^29] <br>- [Properties for structural steel ](https://eurocodeapplied.com/design/en1993/steel-design-properties)[^30]  | 
 |                      | Stress-strain relations in cross-sections <details><summary>Student can:</summary>- Identify the stress-strain relationship in reinforced concrete cross-section  </details>                                                                                                                                       |[Stress-strain relationship ](https://www.si-eng.org/post/a-step-by-step-anatomy-of-concrete-stress-strain-curve-1)[^31]                                |
-|                      | Design and verification of sections and members loaded under normal force, bending moment, shear force, torsion and/or combinations of these in SLS and ULS      <details><summary>Student can:</summary>- Make simple hand calculation to design different structural elements and verify them  </details>                                                                                                                                  | - [Under normal force, bending moment and shear force ](https://structville.com/2020/10/design-of-reinforced-concrete-beams.html)[^32] <br>- [Under torsion ](https://structville.com/2021/01/worked-example-design-of-rc-beams-for-torsion-en-1992-12004.html)[^33] <br>- [Reinforcement calculation for different elements ](https://theconstructor.org/building/minimum-maximum-reinforcement-reinforced-concrete-elements/234426/)[^34]                               |For more information you can go through the following readers: <br>- [Slabs](../Lec_pdfs/Ch_14_EC_SlabsReader_nv_01.pdf)[^45] <br>- [Worked examples](../Lec_pdfs/CIE3150_CTB3335_2017_worked_examples_37.pdf)[^45] 
+|                      | Design and verification of sections and members loaded under normal force, bending moment, shear force, torsion and/or combinations of these in SLS and ULS      <details><summary>Student can:</summary>- Make simple hand calculation to design different structural elements and verify them  </details>                                                                                                                                  | - [Under normal force, bending moment and shear force ](https://structville.com/2020/10/design-of-reinforced-concrete-beams.html)[^32] <br>- [Under torsion ](https://structville.com/2021/01/worked-example-design-of-rc-beams-for-torsion-en-1992-12004.html)[^33] <br>- [Reinforcement calculation for different elements ](https://theconstructor.org/building/minimum-maximum-reinforcement-reinforced-concrete-elements/234426/)[^34] <br>- [Reader I: Slabs](../Lec_pdfs/Ch_14_EC_SlabsReader_nv_01.pdf)[^45] <br>- [Reader II: Worked examples](../Lec_pdfs/CIE3150_CTB3335_2017_worked_examples_37.pdf)[^45]                               |- Two alternatice sources for torsion is provided at "Under torsion" and "Reader II: Worked examples" (see examples 19, 20 and 21.) <br>- In depth information can be read in the provided readers. 
 |                      | Detailing of concrete and reinforcement  <details><summary>Student can:</summary>- Make simple hand calculation to determine the minimum required reinforcement for different structural elements and verify them  </details>                                                                                                                                      |[Beam reinforcement detailing ](https://www.structuralguide.com/beam-reinforcement-detailing/)[^35]                                 |
 |                      | Crack-width control <details><summary>Student can:</summary>- Make simple hand calculation to determine the crack width for different structural elements and control their size  </details>                                                                                                                                       | [Crack-width control](../Lec_pdfs/Ch_15_EC_Crack_width_control_CRB_07_V2018.pdf)[^36]                              |- See if you can do example 1 and example 2 at the end of the document <br>- Go through the reader if needed for the theory  
 |                      | Deformation of concrete structures  <details><summary>Student can:</summary>- Identify how structures can deform and the effects deformation can cause  </details>                                                                                                                                      | [Defects in Concrete Structures  ](https://theconstructor.org/concrete/concrete-defects-types-causes-prevention/8581/#:~:text=Different%20types%20of%20defects%20in,to%20various%20reasons%20or%20causes.)[^37]                                 ||