R. Chaudhary, Shahbaz Ahamad, V. K. Patel, N. Khan
All countries are focusing on sustainable technology that can be economical and adopted for the use of concrete in a better way. Concrete is most widely used construction material and it possesses very low tensile strength, low shear strength and brittle characteristics. In order to improve these properties a relatively new construction material developed through extensive research and development work called Fibre Reinforced Concrete (FRC). An attempt has been made to analyze the effect of addition of asbestos fibre in ordinary portland cement concrete at their optimum proportions. To determine the properties concrete compressive strength and flexural strength test were performed at different test age like 7, 14 and 28 days. M 30 grade concrete was designed as per IS 10262-2009. The additions of fibre were varying from 0.33%, 0.66%, 1.0%, 1.33%, 1.66% and 2.0% by volume of concrete for AFRC. The maximum compressive strength of AFRC obtained at 0.33% addition of fibre. Test results shows that the compressive strength of AFRC marginally improved, but there is a significant improvement in the flexural strength.
{"title":"Experimental Analysis of Asbestos Fibre Reinforced Concrete Composite","authors":"R. Chaudhary, Shahbaz Ahamad, V. K. Patel, N. Khan","doi":"10.9790/1684-1404021822","DOIUrl":"https://doi.org/10.9790/1684-1404021822","url":null,"abstract":"All countries are focusing on sustainable technology that can be economical and adopted for the use of concrete in a better way. Concrete is most widely used construction material and it possesses very low tensile strength, low shear strength and brittle characteristics. In order to improve these properties a relatively new construction material developed through extensive research and development work called Fibre Reinforced Concrete (FRC). An attempt has been made to analyze the effect of addition of asbestos fibre in ordinary portland cement concrete at their optimum proportions. To determine the properties concrete compressive strength and flexural strength test were performed at different test age like 7, 14 and 28 days. M 30 grade concrete was designed as per IS 10262-2009. The additions of fibre were varying from 0.33%, 0.66%, 1.0%, 1.33%, 1.66% and 2.0% by volume of concrete for AFRC. The maximum compressive strength of AFRC obtained at 0.33% addition of fibre. Test results shows that the compressive strength of AFRC marginally improved, but there is a significant improvement in the flexural strength.","PeriodicalId":14565,"journal":{"name":"IOSR Journal of Mechanical and Civil Engineering","volume":"28 1","pages":"18-22"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87368756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
As heavy engineering industries grows so is the implements and necessity for more powerful mechanisms to actuate theses implements. Hydraulic cylinders are one such actuators that generates linear translatory motion. Hydraulic cylinder force required for actuation depends on implement requirements and in heavier applications were output forces needed are higher, the internal components of the cylinder needs to withstand this higher loads and hence the design of hydraulic cylinder internal components gains importance. The cylinder rod and piston inside the cylinder are connected jointly either by bolt or nut. This paper concentrates more on these joints which experiences higher tensile or compressive loads during operations. There are instances during implement operation, when the cylinder reciprocates and reaches its extreme fully open position. When there is no more stroke available, the cylinder bottoms-up completely putting high tensile load on the rod and piston-rod joint which may even lead to failure of these joint and cylinder. In this analysis, a static structural analysis was performed on three synthesized cylinder rod-piston joints to investigate different loads that come on these joints and which is best suitable joint for industrial implements with high tensile and preload loads.
{"title":"Design and Analysis of Piston Rod Joint in Hydraulic Cylinder for Industrial Implements","authors":"M. Benny, U. S. Chavan","doi":"10.9790/1684-1403074753","DOIUrl":"https://doi.org/10.9790/1684-1403074753","url":null,"abstract":"As heavy engineering industries grows so is the implements and necessity for more powerful mechanisms to actuate theses implements. Hydraulic cylinders are one such actuators that generates linear translatory motion. Hydraulic cylinder force required for actuation depends on implement requirements and in heavier applications were output forces needed are higher, the internal components of the cylinder needs to withstand this higher loads and hence the design of hydraulic cylinder internal components gains importance. The cylinder rod and piston inside the cylinder are connected jointly either by bolt or nut. This paper concentrates more on these joints which experiences higher tensile or compressive loads during operations. There are instances during implement operation, when the cylinder reciprocates and reaches its extreme fully open position. When there is no more stroke available, the cylinder bottoms-up completely putting high tensile load on the rod and piston-rod joint which may even lead to failure of these joint and cylinder. In this analysis, a static structural analysis was performed on three synthesized cylinder rod-piston joints to investigate different loads that come on these joints and which is best suitable joint for industrial implements with high tensile and preload loads.","PeriodicalId":14565,"journal":{"name":"IOSR Journal of Mechanical and Civil Engineering","volume":"80 1","pages":"47-53"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78655564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper the remedial work for scarcity of the building materials are carried out. Instead of conventional materials it is replaced using the manufacturable resources. Those materials are M sand with River sand for the replacement of fine aggregate and also the combination of M sand and silica fume for the replacement of cement. To prove that the strength related properties are much better than the conventional materials. The important strength such as compressive flexural strength are taken into care and proved with the test results. This is to protect the naturally available resources and the ecofriendly materials to save the environment.
{"title":"Evaluation of High Performance Concrete by Partial Replacement of Cement with Silica Fume Natural Sand and Manufactured Sand","authors":"M. Gomathi, K. P. Kumar","doi":"10.9790/1684-1404021317","DOIUrl":"https://doi.org/10.9790/1684-1404021317","url":null,"abstract":"In this paper the remedial work for scarcity of the building materials are carried out. Instead of conventional materials it is replaced using the manufacturable resources. Those materials are M sand with River sand for the replacement of fine aggregate and also the combination of M sand and silica fume for the replacement of cement. To prove that the strength related properties are much better than the conventional materials. The important strength such as compressive flexural strength are taken into care and proved with the test results. This is to protect the naturally available resources and the ecofriendly materials to save the environment.","PeriodicalId":14565,"journal":{"name":"IOSR Journal of Mechanical and Civil Engineering","volume":"44 1","pages":"13-17"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76485355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Pande, Suraj J. Patil, K. Desale, Ganesh C. Rajput, K. Warke, A. Patil
{"title":"Experimental Investigation on Pressure Stove with Different Blends of Fuel","authors":"M. Pande, Suraj J. Patil, K. Desale, Ganesh C. Rajput, K. Warke, A. Patil","doi":"10.9790/1684-1404016168","DOIUrl":"https://doi.org/10.9790/1684-1404016168","url":null,"abstract":"","PeriodicalId":14565,"journal":{"name":"IOSR Journal of Mechanical and Civil Engineering","volume":"22 1","pages":"61-68"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86044208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The aim of this study is to establish life cycle cost and energy analysis for a sample green building. A school building with green features was selected and life cycle analysis was performed. The material quantity helped in calculating embodied energy values while the electricity bill gave operational energy values. Cost analysis was also done for construction and operational stages of building. The aim of study is to determine LCE and LCA values for the building. The study helped in determining how a green building will incur savings in energy and cost through its life cycle.
{"title":"Use of Combination of Life Cycle Cost Analysis and Life Cycle Energy Analysis for Decision Making In A Green Building in India","authors":"Shashank Borade, S. Pimplikar","doi":"10.9790/1684-1404024952","DOIUrl":"https://doi.org/10.9790/1684-1404024952","url":null,"abstract":"The aim of this study is to establish life cycle cost and energy analysis for a sample green building. A school building with green features was selected and life cycle analysis was performed. The material quantity helped in calculating embodied energy values while the electricity bill gave operational energy values. Cost analysis was also done for construction and operational stages of building. The aim of study is to determine LCE and LCA values for the building. The study helped in determining how a green building will incur savings in energy and cost through its life cycle.","PeriodicalId":14565,"journal":{"name":"IOSR Journal of Mechanical and Civil Engineering","volume":"15 1","pages":"49-52"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77738259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This scientific paper explains the effectiveness of W.K. Muhlbauer’s model in district heating networks. Its major focus is upon determining the level of risk of failure for heating network and as well as seeking a compromise between the capital expenses and the level of occupational safety.The use of software SimNet SSV Heat in our study case, efficiently determines the level of risk associated with leakage and predicts the behavior of leakage within pipeline of any length. It also reduces the level of risk normally associated with additional costs at the designing stage, construction and operations.
{"title":"The Application of W. Kent Muhlbauer’s Model For The Risk Assessment of District Heating Networks","authors":"Małgorzata Kwestarz","doi":"10.9790/1684-1403076573","DOIUrl":"https://doi.org/10.9790/1684-1403076573","url":null,"abstract":"This scientific paper explains the effectiveness of W.K. Muhlbauer’s model in district heating networks. Its major focus is upon determining the level of risk of failure for heating network and as well as seeking a compromise between the capital expenses and the level of occupational safety.The use of software SimNet SSV Heat in our study case, efficiently determines the level of risk associated with leakage and predicts the behavior of leakage within pipeline of any length. It also reduces the level of risk normally associated with additional costs at the designing stage, construction and operations.","PeriodicalId":14565,"journal":{"name":"IOSR Journal of Mechanical and Civil Engineering","volume":"47 1","pages":"65-73"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80704443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Capacity of mid block, in general represents the maximum hourly rate at which vehicles reasonably can be expected to traverse a point or section of a lane during a given time period under prevailing roadway and traffic conditions. Roadway conditions refer to the type of facility, its geometric characteristics, the number of lanes, lateral clearances, design speed, horizontal and vertical alignments. Traffic conditions refer to the composition and distribution of traffic in available lanes. Improvements and changes in geometric features, junction features, traffic control devices and traffic management measures can be designed effectively by proper estimation of capacity. The adequacy or deficiency of a network can be assessed by comparing the present traffic volume with the capacity of existing network. The distribution of traffic in each lane can be planned by measuring its link capacity. The capacity of mid block is not only a function of available road width but varies based on the traffic volume and its composition and other impedances that act on traffic flow continuously. In a mixed urban traffic flow, when the flow rates approaches to capacity, the congestion takes place causing excessive delay to vehicles. In the present study, three kerb side bus stops in Hyderabad city of varying road widths and traffic characteristics are considered to evaluate the reduction in roadway capacity due to kerb side bus stop under variable roadway and traffic conditions. Whenever a bus, stops at a kerb side bus stop, the effective road width available for traffic movement reduces there by creating a bottleneck situation. The impedance caused by the activity of buses at a kerb side bus stop on the quality of traffic can also be assessed by comparing the capacities of the road not affected by the bus stop and the bottleneck or the capacity resulting due to reduced road width. An attempt is made in this study to understand the reduction of capacity at each of the selected bus stops. Using curve enveloping technique, capacity graphs are plotted based on speed – volume relationships for the sections of road, away from the bus stop and also at the bus stop. A comparison of these graphs indicates the reduction in capacity due to the kerb side bus stop. This reduced capacity is a key factor that influences the traffic dynamics at the bus stop and the complex relationships between the various parameters that are inherently affected by these capacity values.
{"title":"Evaluation of Rate of the Reduction in Road Capacity at Kerb side Bus Stop in Urban areas under Mixed Traffic conditions – a case study in Hyderabad city","authors":"R. R. Reddy","doi":"10.9790/1684-1404020108","DOIUrl":"https://doi.org/10.9790/1684-1404020108","url":null,"abstract":"Capacity of mid block, in general represents the maximum hourly rate at which vehicles reasonably can be expected to traverse a point or section of a lane during a given time period under prevailing roadway and traffic conditions. Roadway conditions refer to the type of facility, its geometric characteristics, the number of lanes, lateral clearances, design speed, horizontal and vertical alignments. Traffic conditions refer to the composition and distribution of traffic in available lanes. Improvements and changes in geometric features, junction features, traffic control devices and traffic management measures can be designed effectively by proper estimation of capacity. The adequacy or deficiency of a network can be assessed by comparing the present traffic volume with the capacity of existing network. The distribution of traffic in each lane can be planned by measuring its link capacity. The capacity of mid block is not only a function of available road width but varies based on the traffic volume and its composition and other impedances that act on traffic flow continuously. In a mixed urban traffic flow, when the flow rates approaches to capacity, the congestion takes place causing excessive delay to vehicles. In the present study, three kerb side bus stops in Hyderabad city of varying road widths and traffic characteristics are considered to evaluate the reduction in roadway capacity due to kerb side bus stop under variable roadway and traffic conditions. Whenever a bus, stops at a kerb side bus stop, the effective road width available for traffic movement reduces there by creating a bottleneck situation. The impedance caused by the activity of buses at a kerb side bus stop on the quality of traffic can also be assessed by comparing the capacities of the road not affected by the bus stop and the bottleneck or the capacity resulting due to reduced road width. An attempt is made in this study to understand the reduction of capacity at each of the selected bus stops. Using curve enveloping technique, capacity graphs are plotted based on speed – volume relationships for the sections of road, away from the bus stop and also at the bus stop. A comparison of these graphs indicates the reduction in capacity due to the kerb side bus stop. This reduced capacity is a key factor that influences the traffic dynamics at the bus stop and the complex relationships between the various parameters that are inherently affected by these capacity values.","PeriodicalId":14565,"journal":{"name":"IOSR Journal of Mechanical and Civil Engineering","volume":"63 1","pages":"01-08"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87575275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cement is the binding agent in concrete and mortar and thus becomes an important construction material. Because of its important and varied use in the rapidly growing construction industry and also its consumption trends in the world makes the production of cement very high. Manufacturing of cement is an energy intensive process and releases approximately equal amount of greenhouse gases into the atmosphere, which affects the earth’s ecosystem. More efforts are being undertaken to conserve energy by means of usage of industrial wastes or by-products, such as fly ash, silica fume, ground granulated blast furnace slag, rice husk ash, etc., containing amorphous silica in its chemical composition, as mineral admixture for partial replacement of cement. Since the cement industry is one of the prime producers of carbon dioxide, creating up to 7% of worldwide man made emissions of this gas, it is necessary to find out complete replacement of cement in construction industry. Geopolymer binder is an innovative construction material and a real eco friendly alternative to conventional cement. Geopolymer binder is a combination of alumina silicate as base material in alkaline solution. The alumina silicate is available in natural minerals as well as industrial by-products. Sodium or potassium silicate and hydroxide mixture forms the alkaline solution. The use of geopolymer binder in concrete can be a great alternative to cement in the construction industry, which will result in saving of energy, environmental protection and conversation of resources. An attempt is made to develop the geopolymer concrete in Oman using low calcium fly ash obtained from India. This investigation consists of three studies. In the first study, development of mix proportions of various grades of geopolymer concrete such as C25, C30 and C40. The mix proportion of geopolymer of various grades obtained based on the mix proportions given in ACI code with hundred percent replacement of cement by fly ash. The compressive strength of geopolymer concrete is achieved by adjusting the concentration of sodium hydroxide in the alkaline solution. The strength of geopolymer concrete is achieved in 24 hours after casting of specimens by heat curing. The results obtained are encouraging and similar to the corresponding strength of cement concrete. In the second study, the developed geopolymer concrete of C25 grade is used to cast the solid block of size 200×200×400mm. In the third study, a beam i.e. prism of size 100x100x500mm with two point loading study was done. The strength properties of the block and the beam are comparable with the strength values of conventional concrete of corresponding grade. Hence, the geopolymer technology can be effectively used in the construction industry in terms of saving energy consumption and resources and ultimately to save the ecosystem of earth.
{"title":"Study on Eco-Friendly Concrete Blocks without Cement and Curing","authors":"R. Balamuralikrishnan, K. B.S","doi":"10.9790/1684-1403077483","DOIUrl":"https://doi.org/10.9790/1684-1403077483","url":null,"abstract":"Cement is the binding agent in concrete and mortar and thus becomes an important construction material. Because of its important and varied use in the rapidly growing construction industry and also its consumption trends in the world makes the production of cement very high. Manufacturing of cement is an energy intensive process and releases approximately equal amount of greenhouse gases into the atmosphere, which affects the earth’s ecosystem. More efforts are being undertaken to conserve energy by means of usage of industrial wastes or by-products, such as fly ash, silica fume, ground granulated blast furnace slag, rice husk ash, etc., containing amorphous silica in its chemical composition, as mineral admixture for partial replacement of cement. Since the cement industry is one of the prime producers of carbon dioxide, creating up to 7% of worldwide man made emissions of this gas, it is necessary to find out complete replacement of cement in construction industry. Geopolymer binder is an innovative construction material and a real eco friendly alternative to conventional cement. Geopolymer binder is a combination of alumina silicate as base material in alkaline solution. The alumina silicate is available in natural minerals as well as industrial by-products. Sodium or potassium silicate and hydroxide mixture forms the alkaline solution. The use of geopolymer binder in concrete can be a great alternative to cement in the construction industry, which will result in saving of energy, environmental protection and conversation of resources. An attempt is made to develop the geopolymer concrete in Oman using low calcium fly ash obtained from India. This investigation consists of three studies. In the first study, development of mix proportions of various grades of geopolymer concrete such as C25, C30 and C40. The mix proportion of geopolymer of various grades obtained based on the mix proportions given in ACI code with hundred percent replacement of cement by fly ash. The compressive strength of geopolymer concrete is achieved by adjusting the concentration of sodium hydroxide in the alkaline solution. The strength of geopolymer concrete is achieved in 24 hours after casting of specimens by heat curing. The results obtained are encouraging and similar to the corresponding strength of cement concrete. In the second study, the developed geopolymer concrete of C25 grade is used to cast the solid block of size 200×200×400mm. In the third study, a beam i.e. prism of size 100x100x500mm with two point loading study was done. The strength properties of the block and the beam are comparable with the strength values of conventional concrete of corresponding grade. Hence, the geopolymer technology can be effectively used in the construction industry in terms of saving energy consumption and resources and ultimately to save the ecosystem of earth.","PeriodicalId":14565,"journal":{"name":"IOSR Journal of Mechanical and Civil Engineering","volume":"5 1","pages":"36-44"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75832270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Salman Salim, A. H. Nor, M. E. Sanik, M. H. Osman, M. S. Abdullah, A. S. Sarif
The construction industry is increasingly developing and growing rapidly with more advanced technologies. The world timber demand is increasing at a rapid rate but the timber supply is however depleting. It has been found through research that bamboo can suitably replace timber and other materials in constructions. This study was conducted to investigate the structural strength of bamboo connections involving only spliced joint and compared with control samples strength of bamboo which were not connected. Bending test was conducted on four types of bamboo connection structures which werehalf-lapped splice joint using 3 bolts, half-lapped splice joint using 2 bolts, side plate splice joint, sleeves and insert joint and control sample bamboo. Every connection had six samples to determine the structural strength of the bamboo connection. From the tests conducted, the maximum load that can be borne by the bamboo structure and the bending ofthe bamboo structure will be obtained. Data were compared with the theoretical calculation based on the study of Janssen's. The connection structure that can bear maximum load was sleeves and inserts which was 5.997 kN. The control samples bamboo maximum load was 4.504 kN. Meanwhile, half-lapped splice joint using 3 bolts and 2 bolts were 4.789 kN and 4.04 kN. Structural connections that carriedthe lowest load was side plate splice joint which was only 2.659 kN.Compared with the bending moment of Janssen’s theory, all the connections did not exceed the maximum allowable bending moment. This showed that the study was in accordance with the standards approved by Janssen's theory. The study found that the structure of connections that can be used in the construction work was sleeves and inserts.
{"title":"Bolts connection technique of bamboo in construction work","authors":"Salman Salim, A. H. Nor, M. E. Sanik, M. H. Osman, M. S. Abdullah, A. S. Sarif","doi":"10.9790/1684-1404015460","DOIUrl":"https://doi.org/10.9790/1684-1404015460","url":null,"abstract":"The construction industry is increasingly developing and growing rapidly with more advanced technologies. The world timber demand is increasing at a rapid rate but the timber supply is however depleting. It has been found through research that bamboo can suitably replace timber and other materials in constructions. This study was conducted to investigate the structural strength of bamboo connections involving only spliced joint and compared with control samples strength of bamboo which were not connected. Bending test was conducted on four types of bamboo connection structures which werehalf-lapped splice joint using 3 bolts, half-lapped splice joint using 2 bolts, side plate splice joint, sleeves and insert joint and control sample bamboo. Every connection had six samples to determine the structural strength of the bamboo connection. From the tests conducted, the maximum load that can be borne by the bamboo structure and the bending ofthe bamboo structure will be obtained. Data were compared with the theoretical calculation based on the study of Janssen's. The connection structure that can bear maximum load was sleeves and inserts which was 5.997 kN. The control samples bamboo maximum load was 4.504 kN. Meanwhile, half-lapped splice joint using 3 bolts and 2 bolts were 4.789 kN and 4.04 kN. Structural connections that carriedthe lowest load was side plate splice joint which was only 2.659 kN.Compared with the bending moment of Janssen’s theory, all the connections did not exceed the maximum allowable bending moment. This showed that the study was in accordance with the standards approved by Janssen's theory. The study found that the structure of connections that can be used in the construction work was sleeves and inserts.","PeriodicalId":14565,"journal":{"name":"IOSR Journal of Mechanical and Civil Engineering","volume":"24 1","pages":"54-60"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80080208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In recent times, there have been rapid changes in the Architectural design of multi-story buildings tending towards slenderer structures due purposely to space utilization. These changes are not without some inherent challenges on the serviceability requirements of these buildings; of major concern are deflection, oscillation, and excessive vibration developed by the action of wind on the structural members. This study carried out an evaluation of shear wall and frame network subjected to aerodynamic wind load on a 60m, 20 storeys regular building model for aerodynamic resistance of multi-story building with a view to having further improvement on the serviceability criteria. Wind load assessment was carried out in accordance with recommendations of Euro code using critical wind speed of Maiduguri (47m/s) as primary data. Analysis of the structural system was carried out by using approximate rapid manual method and standard software package. An improved equation was developed for deflection from the result of the analysis which satisfies the limiting criteria of the code. Results obtain from the improved equation when compared with the existing limiting criteria shows more flexural rigidity up to about 95% of the height of the building. This means that the improved equation will provide less deflection than the existing method up to 95% of the building, thereby providing more comfort to the occupants of the buildings.
{"title":"Improved Limiting Criteria for Deflection in Multi-Story Buildings Subjected to Aerodynamic Load","authors":"M. Nura","doi":"10.9790/1684-1404010109","DOIUrl":"https://doi.org/10.9790/1684-1404010109","url":null,"abstract":"In recent times, there have been rapid changes in the Architectural design of multi-story buildings tending towards slenderer structures due purposely to space utilization. These changes are not without some inherent challenges on the serviceability requirements of these buildings; of major concern are deflection, oscillation, and excessive vibration developed by the action of wind on the structural members. This study carried out an evaluation of shear wall and frame network subjected to aerodynamic wind load on a 60m, 20 storeys regular building model for aerodynamic resistance of multi-story building with a view to having further improvement on the serviceability criteria. Wind load assessment was carried out in accordance with recommendations of Euro code using critical wind speed of Maiduguri (47m/s) as primary data. Analysis of the structural system was carried out by using approximate rapid manual method and standard software package. An improved equation was developed for deflection from the result of the analysis which satisfies the limiting criteria of the code. Results obtain from the improved equation when compared with the existing limiting criteria shows more flexural rigidity up to about 95% of the height of the building. This means that the improved equation will provide less deflection than the existing method up to 95% of the building, thereby providing more comfort to the occupants of the buildings.","PeriodicalId":14565,"journal":{"name":"IOSR Journal of Mechanical and Civil Engineering","volume":"140 1","pages":"01-09"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75715815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：