The partially fixed mast is a common configuration of reinforced concrete structures, which nevertheless remains poorly documented in the literature. Yet a partial fixity is a delicate assumption to handle.

This example offers a review of the data input process and the justification of such a calculation, according to the general EC2 method reduced to one critical section (MG1). It especially details various reminders and points of attention to monitor in order to successfully perform the design.

The end of the example shows the exact solution to the problem and the possible optimisation made possible by the integral general method (IGM).

Introduction to the MG1 General Method of Eurocode 2 for the Design of Concrete Columns: Foundations, Usage Limitations, and Key Points of Attention.

The general method for column design according to Eurocode 2, and more specifically the simplified option of this method, referred to as MG1 in this document, is an important everyday tool for the reinforced concrete structural engineer. It makes it possible to significantly reduce the theoretical complexity of studying a slender reinforced concrete column or wall, by approximating second-order effects.

However, this method has usage limitations and caution points that can sometimes be difficult to master, especially since spreadsheet implementations—commonly used in design offices—may hide certain important concepts.

This four-part dossier offers a review of the different calculation steps of the general method, with a focus on various influential aspects. This Part 1 provides a reminder of the fundamentals of the general method.

Analysis of the MG1 General Method: The Impact of the Deformation Shape on the Design of RC Columns and Walls.

The general method for column design according to Eurocode 2  is an important everyday tool for the reinforced concrete structural engineer. It makes it possible to significantly reduce the theoretical complexity of studying a slender reinforced concrete column or wall, by approximating second-order effects.

However, this method has usage limitations and caution points that can sometimes be difficult to master, especially since spreadsheet implementations—commonly used in design offices—may hide certain important concepts.

This four-part dossier offers a review of the different calculation steps of the general method, with a focus on various influential aspects. This Part 2 provides a focus on one of the underlying assumptions of the method: the shape of the deformation.

MG1 General Method : Evaluation of the First-Order Moment and End Stiffnesses to Be Considered in the Design of Columns and Walls.

The general method for column design according to Eurocode 2  is an important everyday tool for the reinforced concrete structural engineer. It makes it possible to significantly reduce the theoretical complexity of studying a slender reinforced concrete column or wall, by approximating second-order effects.

However, this method has usage limitations and caution points that can sometimes be difficult to master, especially since spreadsheet implementations—commonly used in design offices—may hide certain important concepts.

This four-part dossier offers a review of the different calculation steps of the general method, with a focus on various influential aspects. This Part 3 details several key caution points regarding the determination of the first-order bending moment to be considered and the evaluation of the boundary stiffnesses to be adopted.

MG1 General Method : Implications of Construction Tolerances on Design, the Impact of Serviceability Deformations, and Verification of Supports.

The general method for column design according to Eurocode 2  is an important everyday tool for the reinforced concrete structural engineer. It makes it possible to significantly reduce the theoretical complexity of studying a slender reinforced concrete column or wall, by approximating second-order effects.

However, this method has usage limitations and caution points that can sometimes be difficult to master, especially since spreadsheet implementations—commonly used in design offices—may hide certain important concepts.

This four-part dossier offers a review of the different calculation steps of the general method, with a focus on various influential aspects.This Part 4, the final part of the series, develops several topics often addressed only briefly, such as construction tolerances, serviceability deformations and the justification of second‑order effects.