Asfandyar Ahmed | University of Houston (original) (raw)
Papers by Asfandyar Ahmed
International Journal of Advanced Natural Sciences and Engineering Researches, 2024
Concrete is the most abundant construction material and requires sustainable practices for better... more Concrete is the most abundant construction material and requires sustainable practices for better performance. A main manifestation of deterioration in concrete structures is cracking due to the low tensile resistance of the material, thus affecting its durability, and resilience and also impacting sustainable practices. Crack detection and monitoring are essential for structural safety, especially when critical structures such as nuclear power plants and dams are concerned. The objective of the research presented here is to revisit the self-sensing potential of concrete including short carbon fibers. These carbon fibers are semiconductors and decrease the resistivity of concrete. The decrease in resistivity helps identify the generation of flaws, such as cracks. In this paper, electrical resistivity measurements were performed using the compressed electrode method, and a comparative study was conducted on four different concrete mixtures containing different amounts of short carbon fibers. The curing time of concrete is also considered a variable in the experimental program. So that the effect of curing on self-sensing behavior can be determined. Till now cement mortar was tested for this ability. In this study, concrete specimens were made and tested for self-sensing ability.
Scientific reports, Jun 6, 2024
Buildings, Jan 9, 2024
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Shock and Vibration, 2018
Brick masonry is widely used for building construction throughout the world. However, unreinforce... more Brick masonry is widely used for building construction throughout the world. However, unreinforced brick masonry buildings performed poorly in the 2005 Kashmir earthquake, in Pakistan, resulting in a decline in the use of brick masonry. In order to investigate and quantify the performance of brick masonry against the seismic forces by confining it through typical stiffer, line elements (column and beams), a full-scaled room model of an area 3048 × 3658 mm (10 × 12 ft) and height of 3353 mm (11 ft) was constructed using confined brick masonry. The model was tested under quasistatic loading system. Crack pattern was noted at the end of each loading cycle. The response of the model was interpreted through a hysteresis curve, which was then idealized by a bilinear curve. A comparison of the results has been made with four different studies done on the similar model made of unreinforced brick masonry before and after retrofitting and unreinforced concrete block masonry before and after retrofitting previously tested at the same testing facility.
Structures, Apr 1, 2021
Abstract The research work presented in this paper has been carried out to investigate the dynami... more Abstract The research work presented in this paper has been carried out to investigate the dynamic characteristics and seismic performance parameters of reinforced concrete frame structure built in crumb rubber. Two test specimens were fabricated in reduced scale 1:3 and tested under seismic loading using the shake table. One of the test models was made of normal reinforced concrete, which was used as a reference. The second model was fabricated of reinforced concrete having rubber crumb; replacing the volume of fine aggregates partially by crumb rubber particles. The test specimens were subjected to free vibration test followed by dynamic testing having multiple base excitations using Northridge 1994 accelerogram to explore the dynamic characteristics and seismic response parameters, respectively. The results demonstrated that the partial inclusion of rubber crumb in concrete reduces compressive strength, density, and yield strength. Fundamental period of vibration and damping ratio were increased for crumb in concrete frame. Damage pattern of both the frames was observed and recorded. These results suggested that fine aggregates in concrete can be confidently replaced partially by crumb rubber particles in structures subjected to seismic loadings.
International Journal of Protective Structures, Aug 10, 2020
The objective of this paper is to propose a new modeling methodology for numerical analysis of fu... more The objective of this paper is to propose a new modeling methodology for numerical analysis of full-scale confined brick masonry structures. Two modeling strategies are used within a single structure, where the in-plane walls are modeled using "simplified micro-modeling" approach and out-of-plane walls are modeled using "macro-modeling" approach. The lateral load capacity is associated with the in-plane shear resistance of masonry elements, therefore more detailed analysis is required for in-plane walls to achieve a comprehensive understanding of the damage mechanism and load transfer. The investigation of the in-plane shear behavior of confined brick masonry structures is of significant importance. Additionally, the proposed hybrid model is validated by comparing the results of experimental studies of confined brick masonry structure. A parametric study is then conducted to investigate the effect of brick and mortar properties on the structural response metrics (e.g. base shear coefficient, effective stiffness, response modification factor, the three performance levels (i.e. Immediate Occupancy, Life Safety and Collapse Prevention limits) and the energy absorption properties). It is observed that these structural response metrics, changed considerably by varying the material properties. Apart from that, the damage behavior and damage pattern are also assessed for the better understanding of effect of these parameters on the response of the structure. The proposed hybrid-modeling approach gives sufficient accuracy in predicting the lateral load behavior as well as the damage mechanism of confined brick masonry structure, subjected to lateral loading.
International journal of disaster risk reduction, Jul 1, 2021
Abstract Excessive damage to building infrastructure has been witnessed in some major earthquakes... more Abstract Excessive damage to building infrastructure has been witnessed in some major earthquakes in Pakistan and hence requires to better understand their potential vulnerability. Some basic data was gathered in terms of features such as number of stories, age of building and construction typology, as a part of this study to evaluate seismic risk in Abbottabad city (in the North of Pakistan), Relevant study is scarce in the literature so far on the vulnerability study of Pakistan building infrastructure with and without strengthening (capacity enhancement), using performance based seismic assessment methodology. This is first of its kind of study done on the structures in Pakistan that describes the different attributes and performance in detail. To measure the seismic vulnerability of building infrastructure, the induced damage due to increased shaking force is determined. This description of the structure’s vulnerability, in conjunction with the hazard, permits well informed, risk-based conclusions that can be done using performance metrics for instance collapse prevention and economic effects. Numerical modeling was performed by using available data, collected during field survey to represent exactly, the actual response of building infrastructure. Two sets of building fragility curves, before and after capacity enhancement (strengthening), are employed to describe the seismic behavior of the building infrastructure in all the cases. To calculate the losses, an inventory was composed using field survey data that contains all the structural and non-structural components.
Structures, Oct 1, 2020
Abstract As seen during numerous earthquakes, confined masonry exhibited a reliable anti-seismic ... more Abstract As seen during numerous earthquakes, confined masonry exhibited a reliable anti-seismic response due to a number of factors. To understand the effect of these factors, a case study of full scale confined masonry (CM) structure is considered and results of its numerical assessment are described. It focus mainly on the evaluation of factors such as masonry strength, wall density, pre-compression level and properties of the confining elements. The numerical study is performed using advanced numerical simulations in ATENA environment. A rigorous analysis of the nonlinear behavior of CM structures involves advanced nonlinear finite element models and a stable computational cost, making these procedures inappropriate for everyday applications. Therefore, in recent times, several researchers have offered simplified methodologies. In this study a macro-element simplified model based on smeared crack and total stress–strain models is applied to a benchmark CM prototype structure. Results are presented as force–displacement curves, types of failure modes, ductility and damage index. From the parametric studies it was revealed that material strength play a central role on the behavior of confined masonry subjected to lateral loading and determine the effect of other parameters such as pre-compression level, wall density and properties of confining elements.
Brick masonry is widely used for building construction throughout the world. However, unreinforce... more Brick masonry is widely used for building construction throughout the world. However, unreinforced brick masonry buildings performed poorly in the 2005 Kashmir earthquake, in Pakistan, resulting in a decline in the use of masonry construction. To investigate and quantify the performance of masonry against the seismic forces by confining it through typical stiffer, line elements (column and beams), a full-scaled room model of an area 3048 × 3658mm (10 × 12 ft) and height of 3353mm (11 ft) was constructed using confined brick masonry and tested under quasi-static cyclic loading. Damage details were observed after each loading cycle. The structure's response was interpreted through a hysteresis curve, after which the envelop curves were drawn and the envelop curve was then converted into bilinear curve for determining different limit states and performance levels. A comparison 2.7.2 Predominant design failures in confined masonry during Earthquakes .......
Composites and Advanced Materials
This paper presents experimental study on the response of a sustainable structure 3.65 x3.05x3.35... more This paper presents experimental study on the response of a sustainable structure 3.65 x3.05x3.35 m, made with confined hollow concrete block masonry (CHCBM). The model was tested under quasi-static cyclic test to assess the response against seismic load and to determine the potential vulnerability. Based on test data, envelope curves and bilinear idealized curves were drawn according to both Magenes–Calvi and Elnashai methods. Different performance levels i.e. Immediate Occupancy (IO), Life Safety (LS) and Collapse Prevention (CP) were evaluated based on both methods. Damage pattern and force-deformation behavior of CHCBM building was compared with models of the similar configuration and loading conditions. Similarly values of Response modification factor (R), Displacement Ductility (µD) and Displacement amplification factor (Cd) were calculated and compared with the previously tested models and it confirmed that CHCBM building was ductile and structurally integrated under earthqua...
Journal of Engineering and Applied Sciences (JEAS) University of Engineering and Technology Peshawar, 2021
U nreinforced masonry (URM) panels usually opt as infills/partition walls in reinforced concrete ... more U nreinforced masonry (URM) panels usually opt as infills/partition walls in reinforced concrete (RC) and steel frame structures. These walls have serious consequences not only for the safety of life but also for the ease of maintenance of buildings (Shing et al., 2009). Sometimes, URM filling walls, when typically used as partitions, can adversely affect the use of the structure. These structural units are very common in some countries prone to earthquakes like the United States, Turkey, Italy, China and Mexico (Change-Hai, 2014). The response of RC infilled frames, observed in previous earthquakes, is diverse, ranging from acceptable to mediocre (Rosenblueth et al., 1986). This research work focused on the role of the presence of infill brick masonry wall panel in reinforced concrete framing structures and their
International Journal of Disaster Risk Reduction, 2021
Excessive damage to building infrastructure has been witnessed in some major earthquakes in Pakis... more Excessive damage to building infrastructure has been witnessed in some major earthquakes in Pakistan and hence requires to better understand their potential vulnerability. Some basic data was gathered in terms of features such as number of stories, age of building and construction typology, as a part of this study to evaluate seismic risk in Abbottabad city (in the North of Pakistan), Relevant study is scarce in the literature so far on the vulnerability study of Pakistan building infrastructure with and without strengthening (capacity enhancement), using performance based seismic assessment methodology. This is first of its kind of study done on the structures in Pakistan that describes the different attributes and performance in detail. To measure the seismic vulnerability of building infrastructure, the induced damage due to increased shaking force is determined. This description of the structure’s vulnerability, in conjunction with the hazard, permits well informed, risk-based c...
International Journal of Protective Structures
The objective of this paper is to propose a new modeling methodology for numerical analysis of fu... more The objective of this paper is to propose a new modeling methodology for numerical analysis of full-scale confined brick masonry structures. Two modeling strategies are used within a single structure, where the in-plane walls are modeled using “simplified micro-modeling” approach and out-of-plane walls are modeled using “macro-modeling” approach. The lateral load capacity is associated with the in-plane shear resistance of masonry elements, therefore more detailed analysis is required for in-plane walls to achieve a comprehensive understanding of the damage mechanism and load transfer. The investigation of the in-plane shear behavior of confined brick masonry structures is of significant importance. Additionally, the proposed hybrid model is validated by comparing the results of experimental studies of confined brick masonry structure. A parametric study is then conducted to investigate the effect of brick and mortar properties on the structural response metrics (e.g. base shear coe...
Shock and Vibration
Brick masonry is widely used for building construction throughout the world. However, unreinforce... more Brick masonry is widely used for building construction throughout the world. However, unreinforced brick masonry buildings performed poorly in the 2005 Kashmir earthquake, in Pakistan, resulting in a decline in the use of brick masonry. In order to investigate and quantify the performance of brick masonry against the seismic forces by confining it through typical stiffer, line elements (column and beams), a full-scaled room model of an area 3048 × 3658 mm (10 × 12 ft) and height of 3353 mm (11 ft) was constructed using confined brick masonry. The model was tested under quasistatic loading system. Crack pattern was noted at the end of each loading cycle. The response of the model was interpreted through a hysteresis curve, which was then idealized by a bilinear curve. A comparison of the results has been made with four different studies done on the similar model made of unreinforced brick masonry before and after retrofitting and unreinforced concrete block masonry before and after r...
This paper presents the disaster mitigation through conservation of historical building of Sethi ... more This paper presents the disaster mitigation through conservation of historical building of Sethi House Peshawar.
This paper presents the disaster mitigation through conservation of historical building of Sethi ... more This paper presents the disaster mitigation through conservation of historical building of Sethi House Peshawar. The house is approximately two centuries old brick masonry structure with internal woodwork of great heritage importance. Historical (Monumental) buildings are unique as their evaluation or analysis cannot be done by any standard structural scheme: this makes it difficult to evaluate their reliability and performance. Because in addition to many uncertainties that are common in all existing buildings and particular to old buildings, no statistical data is available on the behavior of similar buildings. The rehabilitation of these structures requires that the repairing material and method of construction should be similar to the original material and method of construction, in order to conserve the aesthetic value of the structure. The scope of work included, repair and rehabilitation of cracked arches of basement hall and Level 1 & 2 rooms, roof treatment and perforated b...
International Journal of Advanced Natural Sciences and Engineering Researches, 2024
Concrete is the most abundant construction material and requires sustainable practices for better... more Concrete is the most abundant construction material and requires sustainable practices for better performance. A main manifestation of deterioration in concrete structures is cracking due to the low tensile resistance of the material, thus affecting its durability, and resilience and also impacting sustainable practices. Crack detection and monitoring are essential for structural safety, especially when critical structures such as nuclear power plants and dams are concerned. The objective of the research presented here is to revisit the self-sensing potential of concrete including short carbon fibers. These carbon fibers are semiconductors and decrease the resistivity of concrete. The decrease in resistivity helps identify the generation of flaws, such as cracks. In this paper, electrical resistivity measurements were performed using the compressed electrode method, and a comparative study was conducted on four different concrete mixtures containing different amounts of short carbon fibers. The curing time of concrete is also considered a variable in the experimental program. So that the effect of curing on self-sensing behavior can be determined. Till now cement mortar was tested for this ability. In this study, concrete specimens were made and tested for self-sensing ability.
Scientific reports, Jun 6, 2024
Buildings, Jan 9, 2024
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Shock and Vibration, 2018
Brick masonry is widely used for building construction throughout the world. However, unreinforce... more Brick masonry is widely used for building construction throughout the world. However, unreinforced brick masonry buildings performed poorly in the 2005 Kashmir earthquake, in Pakistan, resulting in a decline in the use of brick masonry. In order to investigate and quantify the performance of brick masonry against the seismic forces by confining it through typical stiffer, line elements (column and beams), a full-scaled room model of an area 3048 × 3658 mm (10 × 12 ft) and height of 3353 mm (11 ft) was constructed using confined brick masonry. The model was tested under quasistatic loading system. Crack pattern was noted at the end of each loading cycle. The response of the model was interpreted through a hysteresis curve, which was then idealized by a bilinear curve. A comparison of the results has been made with four different studies done on the similar model made of unreinforced brick masonry before and after retrofitting and unreinforced concrete block masonry before and after retrofitting previously tested at the same testing facility.
Structures, Apr 1, 2021
Abstract The research work presented in this paper has been carried out to investigate the dynami... more Abstract The research work presented in this paper has been carried out to investigate the dynamic characteristics and seismic performance parameters of reinforced concrete frame structure built in crumb rubber. Two test specimens were fabricated in reduced scale 1:3 and tested under seismic loading using the shake table. One of the test models was made of normal reinforced concrete, which was used as a reference. The second model was fabricated of reinforced concrete having rubber crumb; replacing the volume of fine aggregates partially by crumb rubber particles. The test specimens were subjected to free vibration test followed by dynamic testing having multiple base excitations using Northridge 1994 accelerogram to explore the dynamic characteristics and seismic response parameters, respectively. The results demonstrated that the partial inclusion of rubber crumb in concrete reduces compressive strength, density, and yield strength. Fundamental period of vibration and damping ratio were increased for crumb in concrete frame. Damage pattern of both the frames was observed and recorded. These results suggested that fine aggregates in concrete can be confidently replaced partially by crumb rubber particles in structures subjected to seismic loadings.
International Journal of Protective Structures, Aug 10, 2020
The objective of this paper is to propose a new modeling methodology for numerical analysis of fu... more The objective of this paper is to propose a new modeling methodology for numerical analysis of full-scale confined brick masonry structures. Two modeling strategies are used within a single structure, where the in-plane walls are modeled using "simplified micro-modeling" approach and out-of-plane walls are modeled using "macro-modeling" approach. The lateral load capacity is associated with the in-plane shear resistance of masonry elements, therefore more detailed analysis is required for in-plane walls to achieve a comprehensive understanding of the damage mechanism and load transfer. The investigation of the in-plane shear behavior of confined brick masonry structures is of significant importance. Additionally, the proposed hybrid model is validated by comparing the results of experimental studies of confined brick masonry structure. A parametric study is then conducted to investigate the effect of brick and mortar properties on the structural response metrics (e.g. base shear coefficient, effective stiffness, response modification factor, the three performance levels (i.e. Immediate Occupancy, Life Safety and Collapse Prevention limits) and the energy absorption properties). It is observed that these structural response metrics, changed considerably by varying the material properties. Apart from that, the damage behavior and damage pattern are also assessed for the better understanding of effect of these parameters on the response of the structure. The proposed hybrid-modeling approach gives sufficient accuracy in predicting the lateral load behavior as well as the damage mechanism of confined brick masonry structure, subjected to lateral loading.
International journal of disaster risk reduction, Jul 1, 2021
Abstract Excessive damage to building infrastructure has been witnessed in some major earthquakes... more Abstract Excessive damage to building infrastructure has been witnessed in some major earthquakes in Pakistan and hence requires to better understand their potential vulnerability. Some basic data was gathered in terms of features such as number of stories, age of building and construction typology, as a part of this study to evaluate seismic risk in Abbottabad city (in the North of Pakistan), Relevant study is scarce in the literature so far on the vulnerability study of Pakistan building infrastructure with and without strengthening (capacity enhancement), using performance based seismic assessment methodology. This is first of its kind of study done on the structures in Pakistan that describes the different attributes and performance in detail. To measure the seismic vulnerability of building infrastructure, the induced damage due to increased shaking force is determined. This description of the structure’s vulnerability, in conjunction with the hazard, permits well informed, risk-based conclusions that can be done using performance metrics for instance collapse prevention and economic effects. Numerical modeling was performed by using available data, collected during field survey to represent exactly, the actual response of building infrastructure. Two sets of building fragility curves, before and after capacity enhancement (strengthening), are employed to describe the seismic behavior of the building infrastructure in all the cases. To calculate the losses, an inventory was composed using field survey data that contains all the structural and non-structural components.
Structures, Oct 1, 2020
Abstract As seen during numerous earthquakes, confined masonry exhibited a reliable anti-seismic ... more Abstract As seen during numerous earthquakes, confined masonry exhibited a reliable anti-seismic response due to a number of factors. To understand the effect of these factors, a case study of full scale confined masonry (CM) structure is considered and results of its numerical assessment are described. It focus mainly on the evaluation of factors such as masonry strength, wall density, pre-compression level and properties of the confining elements. The numerical study is performed using advanced numerical simulations in ATENA environment. A rigorous analysis of the nonlinear behavior of CM structures involves advanced nonlinear finite element models and a stable computational cost, making these procedures inappropriate for everyday applications. Therefore, in recent times, several researchers have offered simplified methodologies. In this study a macro-element simplified model based on smeared crack and total stress–strain models is applied to a benchmark CM prototype structure. Results are presented as force–displacement curves, types of failure modes, ductility and damage index. From the parametric studies it was revealed that material strength play a central role on the behavior of confined masonry subjected to lateral loading and determine the effect of other parameters such as pre-compression level, wall density and properties of confining elements.
Brick masonry is widely used for building construction throughout the world. However, unreinforce... more Brick masonry is widely used for building construction throughout the world. However, unreinforced brick masonry buildings performed poorly in the 2005 Kashmir earthquake, in Pakistan, resulting in a decline in the use of masonry construction. To investigate and quantify the performance of masonry against the seismic forces by confining it through typical stiffer, line elements (column and beams), a full-scaled room model of an area 3048 × 3658mm (10 × 12 ft) and height of 3353mm (11 ft) was constructed using confined brick masonry and tested under quasi-static cyclic loading. Damage details were observed after each loading cycle. The structure's response was interpreted through a hysteresis curve, after which the envelop curves were drawn and the envelop curve was then converted into bilinear curve for determining different limit states and performance levels. A comparison 2.7.2 Predominant design failures in confined masonry during Earthquakes .......
Composites and Advanced Materials
This paper presents experimental study on the response of a sustainable structure 3.65 x3.05x3.35... more This paper presents experimental study on the response of a sustainable structure 3.65 x3.05x3.35 m, made with confined hollow concrete block masonry (CHCBM). The model was tested under quasi-static cyclic test to assess the response against seismic load and to determine the potential vulnerability. Based on test data, envelope curves and bilinear idealized curves were drawn according to both Magenes–Calvi and Elnashai methods. Different performance levels i.e. Immediate Occupancy (IO), Life Safety (LS) and Collapse Prevention (CP) were evaluated based on both methods. Damage pattern and force-deformation behavior of CHCBM building was compared with models of the similar configuration and loading conditions. Similarly values of Response modification factor (R), Displacement Ductility (µD) and Displacement amplification factor (Cd) were calculated and compared with the previously tested models and it confirmed that CHCBM building was ductile and structurally integrated under earthqua...
Journal of Engineering and Applied Sciences (JEAS) University of Engineering and Technology Peshawar, 2021
U nreinforced masonry (URM) panels usually opt as infills/partition walls in reinforced concrete ... more U nreinforced masonry (URM) panels usually opt as infills/partition walls in reinforced concrete (RC) and steel frame structures. These walls have serious consequences not only for the safety of life but also for the ease of maintenance of buildings (Shing et al., 2009). Sometimes, URM filling walls, when typically used as partitions, can adversely affect the use of the structure. These structural units are very common in some countries prone to earthquakes like the United States, Turkey, Italy, China and Mexico (Change-Hai, 2014). The response of RC infilled frames, observed in previous earthquakes, is diverse, ranging from acceptable to mediocre (Rosenblueth et al., 1986). This research work focused on the role of the presence of infill brick masonry wall panel in reinforced concrete framing structures and their
International Journal of Disaster Risk Reduction, 2021
Excessive damage to building infrastructure has been witnessed in some major earthquakes in Pakis... more Excessive damage to building infrastructure has been witnessed in some major earthquakes in Pakistan and hence requires to better understand their potential vulnerability. Some basic data was gathered in terms of features such as number of stories, age of building and construction typology, as a part of this study to evaluate seismic risk in Abbottabad city (in the North of Pakistan), Relevant study is scarce in the literature so far on the vulnerability study of Pakistan building infrastructure with and without strengthening (capacity enhancement), using performance based seismic assessment methodology. This is first of its kind of study done on the structures in Pakistan that describes the different attributes and performance in detail. To measure the seismic vulnerability of building infrastructure, the induced damage due to increased shaking force is determined. This description of the structure’s vulnerability, in conjunction with the hazard, permits well informed, risk-based c...
International Journal of Protective Structures
The objective of this paper is to propose a new modeling methodology for numerical analysis of fu... more The objective of this paper is to propose a new modeling methodology for numerical analysis of full-scale confined brick masonry structures. Two modeling strategies are used within a single structure, where the in-plane walls are modeled using “simplified micro-modeling” approach and out-of-plane walls are modeled using “macro-modeling” approach. The lateral load capacity is associated with the in-plane shear resistance of masonry elements, therefore more detailed analysis is required for in-plane walls to achieve a comprehensive understanding of the damage mechanism and load transfer. The investigation of the in-plane shear behavior of confined brick masonry structures is of significant importance. Additionally, the proposed hybrid model is validated by comparing the results of experimental studies of confined brick masonry structure. A parametric study is then conducted to investigate the effect of brick and mortar properties on the structural response metrics (e.g. base shear coe...
Shock and Vibration
Brick masonry is widely used for building construction throughout the world. However, unreinforce... more Brick masonry is widely used for building construction throughout the world. However, unreinforced brick masonry buildings performed poorly in the 2005 Kashmir earthquake, in Pakistan, resulting in a decline in the use of brick masonry. In order to investigate and quantify the performance of brick masonry against the seismic forces by confining it through typical stiffer, line elements (column and beams), a full-scaled room model of an area 3048 × 3658 mm (10 × 12 ft) and height of 3353 mm (11 ft) was constructed using confined brick masonry. The model was tested under quasistatic loading system. Crack pattern was noted at the end of each loading cycle. The response of the model was interpreted through a hysteresis curve, which was then idealized by a bilinear curve. A comparison of the results has been made with four different studies done on the similar model made of unreinforced brick masonry before and after retrofitting and unreinforced concrete block masonry before and after r...
This paper presents the disaster mitigation through conservation of historical building of Sethi ... more This paper presents the disaster mitigation through conservation of historical building of Sethi House Peshawar.
This paper presents the disaster mitigation through conservation of historical building of Sethi ... more This paper presents the disaster mitigation through conservation of historical building of Sethi House Peshawar. The house is approximately two centuries old brick masonry structure with internal woodwork of great heritage importance. Historical (Monumental) buildings are unique as their evaluation or analysis cannot be done by any standard structural scheme: this makes it difficult to evaluate their reliability and performance. Because in addition to many uncertainties that are common in all existing buildings and particular to old buildings, no statistical data is available on the behavior of similar buildings. The rehabilitation of these structures requires that the repairing material and method of construction should be similar to the original material and method of construction, in order to conserve the aesthetic value of the structure. The scope of work included, repair and rehabilitation of cracked arches of basement hall and Level 1 & 2 rooms, roof treatment and perforated b...