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Reinforced Concrete Flat Slab per. Eurocode 2
Reinforced Concrete Flat Slab Design per. Eurocode 2
Flat slab design Flexure design Column strip and middle strip
EN 1992 Eurocode 2 applies to the design of buildings and other civil engineering works in plain, reinforced and prestressed concrete. It complies with the principles and requirements for the safety and serviceability of structures, the basis of their design and verification that are given in EN 1990: Basis of structural design. EN Eurocode 2 is concerned with the requirements for resistance, serviceability, durability and fire resistance of concrete structures.
Precision:
Input- Insert the dimensions of the slab span and section, loads with their respective safety factors and material properties of the concrete and the reinforcement steel.
Slab span | ||
---|---|---|
Span direction | Span length | |
X direction (l_{x}) | m | |
Y direction (l_{y}) | m | |
Adjacent span in x axis | m | |
Adjacent span in y axis | m | |
Adjacent span should be greater than 0.85l_{y} |
Section | ||
---|---|---|
Slab depth (h) | m | |
Column dimensions (x,y) | m | |
m | ||
Concrete cover | m | |
Punching shear design | ||
Column position |
Load | ||
---|---|---|
Dead load | kN/m^{2} | |
Live load | kN/m^{2} | |
Material | ||
Concrete grade | ||
Flexural and shear rebar grade | ||
Flexural and shear rebar size |
This application Requires Premium Membership to execute calculations
I am aware of the slab design is based on the concise Eurocode 2, Concise Table 15.3. According to Eurocode, the ratio of the adjacent span and design span is greater than 0.85 and the live load must be less than or equal to the dead load in order to use the coefficient method design from the Concise Table 15.3.
Output results - This will design a reinforced concrete flat slab for flexure and shear in the tables below from the design input data in the table above.
Design spans | |||||
---|---|---|---|---|---|
Column strip width | m | Middle strip | m | ||
Design moments | |||||
Sagging moment | kN-m | Column strip | kNm/m | ||
Middle strip | kNm/m | ||||
Hogging moment | kN-m | Column strip | kNm/m | ||
Middle strip | kNm/m |
Analysis | ||||||||
---|---|---|---|---|---|---|---|---|
Design values | Sagging moment | Hogging moment | ||||||
Column strip | Middle strip | Column Strip | Middle strip | |||||
K value | ||||||||
Required steel area (A_{s}) | mm^{2}/m | mm^{2}/m | mm^{2}/m | mm^{2}/m | ||||
Bar spacing | mm | mm | mm | mm | ||||
Provided steel area (A_{s}) | mm^{2}/m | mm^{2}/m | mm^{2}/m | mm^{2}/m |
This application Requires Premium Membership to execute calculations
Shear design values | ||
---|---|---|
Reaction force at the column (V_{ED}) | kN | |
Design shear stress at the face of the column (v_{ED}) | MPa | |
Concrete maximum shear strength (v_{Rd,max}) | MPa | |
Design shear stress at the control perimeter u_{1} (v_{ED}) | MPa | |
Concrete shear resistance (v_{Rd,c}) | MPa | |
Punching shear reinf. per perimeter (A_{sw}) | mm^{2} | |
No of punching shear reinf. provided (n) | ||
Punching shear resistance with shear reinf. (v_{Rd,cs}) | MPa | |
Outer perimeter where shear reinf. not required (u_{out,ef}) | m | |
Radius from the column face to the outer perimeter (r) | m |
Equation used for Flat slab design Flexure design Column
Source:
Alazar Woldeyohannes
Master's program in Structural Engineering in the School of Mechanical,
Aerospace and Civil Engineering
University of Manchester
Email available on request
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