Page 47 - Advanced Design Examples of Seismic Retrofit of Structures

Example of a Two-Story Unreinforced Masonry Building Chapter 2 39

2.4.14 Conclusions on the Common Types of Damage
to URM Buildings

The most common types of damage to different structural part in URM building
observed in past earthquakes which have been previously presented in this part
of the example are schematically shown in Fig. 2.25.

2.5 BUILDING CONFIGURATION

In order to perform a vulnerability assessment, the main structural and nonstruc-
tural components of the considered building should be identified. All the geo-
metrical features, material properties, and response characteristics of these
components are introduced in this part.

2.5.1 Structural and Nonstructural Components
In the considered URM building, the masonry walls carry all the gravitational
forces from dead and live loads of the roof and their own weight as well. In addi-
tion, these walls are the only load-bearing structural elements which are
expected to tolerate lateral loads including wind and earthquakes in both direc-
tions of the plan of the building. As a result, these walls are considered as struc-
tural components of the building.

Asphalt Crushed brick

25 cm Joist Cement block Gypsum Soil-gypsum
(A)
Cement mosaic Sand-cement mortar

25 cm Joist Cement block Gypsum Soil-gypsum
(B)
FIG. 2.25 Details of the filler-joist roof. (A) Floor story (floor of the first story). (B) First story
(roof of the building).