Section bearing capacity

Objective: Section bearing capacity

Task: Calculate ultimate moment strength of the section

References: Reinforced concrete desing to Eurocode 2. W.H.Mosley, J.H.Bumgey and R. Hulse, 2007  (Example 4.2, p. 72)

Initial data file:

ARBAT program section – Check, mode – Strength of RC Sections

Example-4.2-EN.SAV
report – Arbat 4.2-EN.doc.

Compliance with the codes: EN 1992-1-1

Initial data:

b×h = 300×600 mm	Cross-section sizes
а1= 67,5 mm	Distance from the edge of the lower reinforcement to the lower edge of the cross-section (protective layer)
As1 = 1470 mm2	Area of the lower reinforcement
М= 284 kNm	Bending moment
Concrete class Class of reinforcement	С20/25 B500M(A)

 

Initial data in ARBAT:

Importance factor  K_FI = 1
Coefficient taking account of long term effects on the compressive strength α_сс = 0,85
Member length 1 m
Effective length factor in the XoY plane 1
Effective length factor in the XoZ plane 1

 

Section

b = 300 mm h = 600 mm a1 = 67,5 mm a2 = 20 mm	S1 - 3∅25

 

Reinforcement	Class	Additional service factor
Longitudinal	B500M (A)	1
Transverse	B420S (B)	1

 

Concrete

Concrete type: Heavy-weight
Concrete class: C25/30
Aggregate: Quartzite

Additional parameters
additional service factor	1
Concrete age (days)	28
Cement strength class	Class R
Creep progress time	36500	days
Temperature T(Δt)	20	°C
The number of days where a temperature T prevails Δt	28	days
Relative humidity	40	%

 

Results of analysis by load case combinations

		N	My	Vz	Mz	Vy	T
		T	kN*m	T	kN*m	T	kN*m
1	Fundamental combination	0	284	0	0	0	0

 

Checked according to EN 1992-1-1	Check	Utilization Factor
	Ultimate moment strength of the section	1,003

 

Comparison of solutions

Check	Ultimate moment strength of the section
Guide	284 kNm
ARBAT	284/1,003 = 283,15 kNm
Deviation, %	0,3 %