Evo Design  structural engineering

Calculation
No.



001RC BEAM


CALCULATION SHEET

Project No.










onlinestructuraldesign.com

SAMPLE
CALCULATION


Project
Title:

Reinforced concrete beam  interactive design
spreadsheet


Calc. By

Date

Rev.











MN

16.04.2014

0


Subject

RC Beam  Bending Moment Capacity calculation (EC2)


Checked By

Date




Metric Units Spreadsheet


CN

16.04.2014
















InputÂ

Output







Beam section
dimensions

Bending
moment capacity







Reinforcement








Materials (steel,
concrete)





















Reinforced Concrete
Beam Calculation  Bending Moment Capacity (EC2)

per EN
199211:2004*










Section 3


Beam bending moment capacity at ultimate limit state





















Beam section
dimensions











h =

400

mm

(parameters that can not be







b =

300

mm

Â modified in
the demo version)







Area =


mm^{2}
























Reinforcement













c =


mm

cover























f =Â




mm


bars diameter






n =






no of bars



























per EN
199211:2004










Section 3.1.7
Figure 3.5





























































































A_{s} =


mm^{2}

area of reinforcement in
tension side






p_{reinf} =


%

percentage of tension
reinforcement



















Materias













Concrete class








per EN
199211:2004


f_{ck} =


MPa

concrete
characteristicÂ



Section 3
Table 3.1





cylinder strength









Tension reinforcement













type



reinforcement types




f_{yk} =


MPa

reinforcement yield strength














Partial
factors for materials for ultimate limit states




per EN
199211:2004










Section 2
Table 2.1N


g_{c} =








values for
Persistent & Transient design situations


g_{s} =








recommended
by the Eurocode; values to be used










may be found
in the Eurocode National Annexes


References:


EN 199311:2004  Eurocode 2: Design of concrete structures
 Part 11: General rules and rules for buildings






Calculation No.





CALCULATION SHEET

Project No.










onlinestructuraldesign.com



Project Title:



Calc. By

Date

Rev.















Subject



Ckd. By

Date




























Design
compressive concrete strength





per EN
199211:2004










Section 3.1.6


a_{cc} =








Coefficient
taking account of long term effects










on the
compressive strength and of unfavourable










effectsresulting
from the way the load is applied










value may be
found in the EC National Annex


f_{cd} =

a_{cc} * f_{ck} / g_{c}

=


MPa



formula 3.15

















Design reinforcement strength













f_{yd} =

f_{yk}
/ g_{s}


=


MPa



per EN
199211:2004










Section 3.1.7
Figure 3.8









































l =








per EN
199211:2004










Section 3.1.7
(3)


h =








A
rectangular stress distribution is assumed










l, defining the effective height
of the compression










zone and h, defining the effective strength
are










derived from
formulas 3.19, 3.20, 3.21 and 3.22



































































Bending
moment capacity  Stress and strain equilibrium  pure bending




















F_{s} =

A_{s}
* f_{yd}


=


kN








F_{b} =

F_{s}












a =

F_{b} / (h *
b * f_{cd})

=


mm








x =

a / l


=


mm





















M_{cap} =

F_{b} * (h  c  f/2 a/2)

=


kN*m




















































































































































































