Defects in Masonry Walls. Guidance on Cracking: Identification, Prevention and Repair, CIB Publication 403


Thomaz, E., Sousa, H., Roman, H., Morton, J., Silva, J.M., Corrêa, M., Pfeffermann, O. Lourenço, P.B., Vicente, R.S., Sousa, R.

CIB Commission W023 - Structural Walls is fundamentally concerned with masonry, mainly with Codes, Historic Buildings and Seismic Design.

Important concerns have been raised, particularly about the serviceability behaviour of masonry walls, structural or infilling, since it has been realised that there is a need to pay more attention to these aspects, recognising their relation with defects on masonry walls.

A working group: WG1- Serviceability of Masonry Walls was created in 2011 within the Commission with the mission to prepare a guide focused on avoiding cracking defects in masonry walls.

Considering the diversity of masonry uses, this guide was intended to be a concise document, to have general interest and to complement the guidance in structural codes. The objective is not to deal with the diagnosis of masonry defects, or with the defects associated with seismic or ancient buildings, but to help technicians with its identification, prevention and repair.

The document was prepared by a Panel of Authors, members of CIB Commission W023 and other experts, under the Coordination of Hipólito Sousa, also Convenor of WG1.

The authors are: Ercio Thomaz (Brazil), Hipólito Sousa (Portugal), Humberto Roman (Brazil), John Morton (UK), José M. Silva (Portugal), Márcio Corrêa (Brazil), Oscar Pfeffermann (Belgium), Paulo B. Lourenço (Portugal), Romeu S. Vicente (Portugal) and Rui Sousa (Portugal).

Information about the masonry practices in their countries was also provided by the following experts: Barry Haseltine (UK), Dirk Martens (Netherlands), Erhard Gunkler (Germany), Jan Kubica (Poland), Oliver Dupont (France), Roberto Capozucca (Italy) and Tor-Ulf Weck (Finland). A revision of the English language of the document was made by John Morton (UK) and Barry Haseltine (UK).

The document was approved in general at the Commission meeting in Antwerp (Belgium) in October 2014. It was subsequently subjected to minor adjustments and brought to the attention of all members of the Commission and then published by the CIB Secretariat.