An alternative tabular method for fire protection design of reinforced concrete columns - Explanations to the new Annex C of DIN EN 1992-1-2/A1

An A1-Amendment [2] of Eurocode 2 – DIN EN 1991-1-2: “Structural Fire Design” [1] had been published in November of 2019. The new Annex C: “Buckling of columns under fire conditions”
of this A1-Amendment incorporates 7 design tables for the fire resistance
classes R30 to R240. These tabular methods provide another
possibility for the fire protection design of reinforced-concrete
columns with rectangular cross-sections in stiffened and unstiffened structures. The excerpt of a table is given as an example.

The scientific background and the validation of the new Annex C including the associated restrictions will be explained in parts in the panel. Based on this principles, the use of the tables given in Annex C will be allowed henceforth in Germany too (A2-Amendment [5]
of the National Annex [3]). An interpolating application of the new tables in practice will be explained on the basis of two design examples.

Extensive background information and an outlook for the planned extension of the scope of application of these tables in the next generation of Eurocode will be included in [6].

Related articles:

Issue 2017-02 New possibilities

Fire protection design of columns

DIN EN 1992-1-2 [1], Method A DIN EN 1992-1-2 [1], section 5.3.2 contains two possibilities for a simplified fire protection design given in  table 5.2a and equation (5.7) as so-called “Method...

Issue 2014-02 Eurocode 2 or DIN 4102-4?

Structural fire design of precast concrete elements –

Structural fire design of concrete elements shall be done according to DIN EN 1992-1-2 (Eurocode 2 part 1-2) [1] and DIN 4102-4 [2] in Germany. In annex 2.3/5 of the technical construction regulations...

Issue 2018-08 KLB

New brochure on structural fire protection

Protected against fire: KLB Klimaleichtblock, Andernach, has published a new paper for improving the fire protection in buildings. The brochure „KLB-Wandbaustoffe“ (KLB wall construction materials)...

Issue 2016-02 A1-Änderung (change) to the National Annex of Eurocode 2

The latest changes to standards for concrete construction

Cold design DIN EN 1992-1-1/NA/A1:2015-12 Two topics on concrete construction have been discussed in special detail in professional circles in Germany, partly controversially, in recent years. These...

Issue 2017-02 Background and explanations to the new DBV Code of Practice

Limitation of crack formation in reinforced and ­prestressed concrete

On the occasion of the introduction of Eurocode 2 DIN EN 1992 “design of concrete structures” including the associated national annexes for building construction and bridge construction in 2012 and...