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Eurocode
Applied.com

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Eurocode 2 Permissible mandrel diameter for bent bars

Description:: Minimum mandrel diameter for bending bars to avoid bending cracks in the bar and failure of concrete inside the bend
According to:: EN 1992-1-1:2004+AC2:2010 Section 8.3
Supported National Annexes:: Nationally Defined Parameters (NDPs) automatically filled for supported countries

All Calculations

Input

Concrete characteristic strength (not greater than 55 MPa)

f_ck

MPa

e.g. 30 MPa for concrete class C30/37. For a list of concrete classes see Table of Concrete Design Properties

Tensile stress in steel reinforcement from ultimate loads

Reinforcement steel characteristic yield strength

f_yk

MPa

Value of tensile stress in steel reinforcement from design loads

σ_sd

MPa

Diameter of reinforcement bar

Center-to-center distance between bars (measured perpendicular to the plane of the bend)

Plane of the bar bend adjacent to the concrete face?

Concrete cover to reinforcement bar (measured perpendicular to the plane of the bend)

Nationally Defined Parameters

Coefficient taking account of long term effects and loading effects on the compressive strength of concrete (for shear)

α_cc

According to EN1992-1-1 §3.1.6(1)P and the National Annex.

Concrete partial material safety factor

γ_c

According to EN1992-1-1 §2.4.2.4 and the National Annex.

Reinforcement steel partial material safety factor

γ_s

According to EN1992-1-1 §2.4.2.4 and the National Annex.

Note: Always verify the validity of the Nationally Defined Parameters (NDPs). Please inform us of any discrepancy using our Contact Form. The NDP value is left blank for all NDPs that we do not have this information available. Interested users who have access to the corresponding NDPs can notify us using our Contact Form to fill-in the missing information.