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Eurocode 2 Concrete nominal cover for reinforcement and prestressing steel

Description:
Calculation of required nominal concrete cover cnom for reinforcement steel and prestressing steel
According to:
EN 1992-1-1:2004+AC2:2010 Section 4.4
All Calculations
Input
MPa
e.g. 30 MPa for concrete class C30/37. For a list of concrete classes see Table of Concrete Design Properties
mm
Exposure classes related to environmental conditions in accordance with EN 206-1 as specified in EN1992-1-1 Table 4.1. See table below.
Exposure classes related to environmental conditions in accordance with EN 206-1
X0No risk of corrosion or attack (Very dry: Concrete inside buildings with very low air humidity)XD1Chlorides - Moderate humidity (surfaces exposed to airborne chlorides)
XC1Carbonation - Dry or permanently wet (interior of buildings with very low air humidity, permanently submerged in water)XD2Chlorides - Wet or rarely dry (swimming pools, exposure to industrial waters containing chlorides)
XC2Carbonation - Wet, rarely dry (long-term water contact, many foundations)XD3Chlorides - Cyclic wet & dry (bridge parts exposed to spray containing chlorides, pavements, car park slabs)
XC3Carbonation - Moderate humidity (interior of buildings with moderate or high air humidity, external concrete sheltered from rain)XS1Sea water - Airborne salts not in direct contact with sea water (structures near to or on the coast)
XC4Carbonation - Cyclic wet & dry (concrete subject to water contact not within exposure class XC2)XS2Sea water - Permanently submerged (parts of marine structures)
XS3Sea water - Tidal splash & spray zones (parts of marine structures)
years
Design working life of 50 years corresponds to structures of average importance.
True if position of reinforcement is not affected by construction process, such as in slabs without link reinforcement.
Nationally Defined Parameters
Nationally Defined Parameters corresponding to EN1992-1-1 sections 4.4.1.2(3), 4.4.1.2(5), 4.4.1.2(6), 4.4.1.2(7), 4.4.1.2(8), 4.4.1.2(13), 4.4.1.3(1), 4.4.1.3(3), 4.4.1.3(4).
The inspection depending on inspection levels is specified in prEN 13670, where Execution Class 1 corresponds to the relaxed inspection level, Execution Class 2 corresponds to the normal inspection level, and Execution Class 3 corresponds to the tightened inspection level.
Maximum equivalent water-to-cement ratio used in concrete composition, corresponding to vctekv in the National Annex of Sweden, Table 4.4N. Larger values are more unfavorable.
Adequate cement content according to National Annex of Spain for EN1992-1-1 Section 4.4.1.2(5).
Note: Always verify the validity of the Nationally Defined Parameters. Please inform us of any discrepancy using our Contact Form