Improving structural performance of timber wall panels by inexpensive FRP retrofitting techniques

Muhammad Ammad Hassan, Muhammad Usman*, Asad Hanif, Syed Hassan Farooq, Jamil Ahmed

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


This paper presents an experimental investigation conducted on traditional timber structures, known as Dhajji Dewari (DD). These timber structures are mostly constructed in mountainous regions and other places where availability of conventional building construction materials is scarce. DD has prominent features such as its ability to resist lateral forces, but there has been little work done on the retrofitting aspect of DD structures. In this experimental study, 5 reduced scale DD wall samples have been tested, in two phases, for structural performance. The walls were tested under in-plane lateral monotonic loading, and their response was then evaluated. In the 1st phase of testing, conventional strengthening techniques were used to find the progressive joint failure pattern, while in the 2nd phase of testing, those damaged critical joints were retrofitted with CFRP. It was demonstrated that by using FRP for wall retrofitting, not only is the load and displacement carrying capacity of the wall enhanced, but its ductility and energy dissipation are also significantly improved, thereby validating the seismic performance of DD construction.

Original languageEnglish
Article number101004
JournalJournal of Building Engineering
StatePublished - Jan 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019 Elsevier Ltd


  • Carbon reinforced polymer
  • Dhajji dewari construction
  • Failure pattern
  • Joint strengthening
  • Lateral load
  • Monotonic loading
  • Retrofitting

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials


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