EUROCODE 2: BACKGROUND & APPLICATIONS DESIGN …

1 EUROCODE 2: BACKGROUND & APPLICATIONS . DESIGN OF CONCRETE BUILDINGS. Worked examples Authors: , , , , , , , , , Editors: , ek, , , 2014. Report ReportEUR. EURxxxxx 26566EN. EN. european commission Joint Research Centre Institute for the Protection and Security of the Citizen Contact information Address: Joint Research Centre, Via Enrico Fermi 2749, TP 480, 21027 Ispra (VA), Italy E-mail: Tel.: +39 0332 78 9989. Fax: +39 0332 78 9049. Legal Notice Neither the european commission nor any person acting on behalf of the commission is responsible for the use which might be made of this publication.

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3 Printed in Italy Contents List of authors and editors .. vii ix CHAPTER 1. CONCEPTUAL AND PRELIMINARY DESIGN . Introduction .. 3. Basic data .. 4. General data and preliminary overview .. 4. Slab geometry .. 6. 9. Densities, self-weight, imposed loads, partial and combination factors .. 9. Wind .. 10. Snow load .. 12. Materials .. 12. 12. Exposure classes and concrete strength class .. 12. Exposure classes, structural classes and concrete cover .. 13. Reinforcing steel .. 17. Steel characteristics .. 17. Maximum bar diameters .. 17. Conceptual DESIGN of slabs.

4 18. Slab height .. 18. Slenderness .. 18. Slab height determination .. 20. CHAPTER 23. STRUCTURAL ANALYSES. Finite element modelling of the building .. 25. Loads, load cases and their combinations .. 26. Loads .. 26. i Load cases for dead loads .. 26. Load case 1 dead load of the bearing 26. Load case 2 dead load of the 27. Load case 3 dead load of the facade .. 27. Load cases for wind, snow and service loads 1 and 2 .. 28. Load case 51 .. 28. Load case 101 .. 28. Load case 201 .. 29. Load cases 202 to 29. Load cases 1326, 1336, 1356 and 30. Load cases 10001, 10011, 10021 and 31.

5 Load cases 10101, 10111, 10121 and 32. Rules for the combination of load cases .. 32. Internal forces and 32. Position of calculated internal forces and moments .. 32. Column B2 .. 32. Shear wall B1 .. 32. Frame axis 2 beam .. 32. Frame axis B beam .. 33. Punching for flat slab .. 33. Results of structural analysis .. 33. Column B2 - results for ULS and SLS .. 33. Shear wall B1, results for ULS and SLS .. 36. Frame axis 2 beam, results for ULS .. 38. Frame axis B Beam, results for 42. Punching for flat slab, results for 47. CHAPTER 49. LIMIT STATE DESIGN (ULS - SLS).

6 Introduction .. 51. Motivation .. 51. 53. Ultimate limit state DESIGN .. 53. Slab on beams .. 53. ii Static model and cross section of the slab on beams .. 53. Determination of the bending reinforcement in general .. 55. Determination of the bending reinforcement for the T-beams .. 57. DESIGN of beams for shear .. 59. DESIGN of slabs supported by beams .. 64. Flat 68. Loads and internal forces for the calculation of the flat slab .. 68. Determination of the bending reinforcement .. 68. Punching shear - column B2 .. 70. Column B2 .. 75. DESIGN of shear walls.

7 84. Slab with embedded elements .. 86. Bending reinforcement - beam axis B .. 87. Bending reinforcement of the slab with embedded elements .. 89. Shear capacity .. 91. Serviceability limit states .. 92. SLS deflection - general .. 92. Deflection control by calculation .. 92. Tabulated K values and basic ratios (l/d) .. 94. Slab on beams .. 94. Flat slab .. 95. Slab with embedded elements .. 95. SLS crack width - general .. 96. Crack width control slab with embedded elements .. 98. CHAPTER 101. DETAILING OF THE REINFORCEMENT. Detailing - 103. Anchorage length.

8 103. Lap length .. 105. Detailing of structural 107. Detailing of footing B-2 .. 107. DESIGN of the footing .. 107. Arrangement of the reinforcement .. 110. iii Detailing of beams .. 114. Beam A2 B2 C2 for the case 1 .. 115. Beam B1 B2 B3 for the case 118. Detailing of slabs .. 121. Slab AB12 for case 1 .. 121. Detailing of columns .. 123. Column B2 for the case 2 .. 124. Column B2 - case 2 .. 125. CHAPTER 129. SOME GEOTECHNICAL ASPECTS OF BUILDING DESIGN (EN 1997). Introduction .. 131. Geotechnical data .. 131. Actions on the foundations .. 133. Structural and geotechnical actions.

9 133. General: the three DESIGN approaches of EUROCODE 7 .. 134. DESIGN approach 1 (DA1) .. 134. DESIGN approach 2 (DA2 and DA2*) .. 136. DESIGN approach 3 (DA3) .. 137. Summary for DA1, DA2 and DA3 (for fundamental combinations) .. 137. Column B2 - DESIGN of foundation .. 138. Bearing capacity (ULS) .. 138. Sliding (ULS) .. 139. Comments on settlements (SLS) .. 140. Compensated foundation .. 140. Calculation based on the results of M nard pressuremeter method .. 141. Adjusted elastic method .. 141. CHAPTER 145. FIRE RESISTANCE ACCORDING TO EN 1992-1-2. Introduction.

10 147. Data concerning 147. iv Description of the building .. 147. Mechanical material properties .. 150. General .. 150. Concrete .. 150. Reinforcing bars .. 151. Materials' physical and thermal properties .. 153. Thermal strain of concrete and 153. Concrete specific heat .. 154. Concrete thermal 154. Density of concrete and reinforcing bars .. 154. Reinforced members' sections (column, beam and slab) .. 155. Column B2 .. 155. Beam in axis 2 .. 155. Slab on beams .. 156. Actions .. 156. Tabulated data .. 157. Scope .. 157. Column 500/52 .. 158. Beam 250/44.