Abstract
Construction activities are the most competitive and it involves higher risk with minimum profitability due to competition.
Construction of any infrastructural work involves complex management skills related to manpower, materials, plant, machineries,
new technologies etc. It also involves many agencies interdependent on each other like the planners, structural and functional
designers including various types of specialized engineers and it also includes support of financial institutions, insurers, contractors
and specialized contractors. As there are prevailing labour bye laws it needs special care of their well beings. In such kind of complex
and intense framework some disputes is quite natural between the agencies involved in such activities which further results in claims
management as the unsettled dispute finally leads to financial claims. Higher incidences of disputes are generally reported from the
construction contract. Even if there is an appropriate understanding of construction contract clauses from the agencies in the
agreement yet claims seems to be a major crisis in the construction sector. The research reported in this paper aims in identifying the
major factors responsible of project delay that may give rise to claims for delay damages. The in this paper research mainly highlights
on finding the major components of claims with perspective of contractor for delay damages.
Keywords: Claims, delay, damages, construction industry, disputes.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Stakeholders’ Perception of the Causes and Effect of Construction Delays on P...IJMER
Indian Construction industry is large, volatile, and requires tremendous capital outlays. Typically, the work offers low rates of return in relation to the amount of risk involved. A unique element of risk in the industry is the manner in which disputes and claims are woven through the fibre of the construction process. Delay is generally acknowledged as the most common, costly, complex and risky problem encountered in construction projects. Because of the overriding importance of time for both the Owner and the Contractor, it is the source of frequent disputes and claims leading to lawsuits. The growing rate of delays is adversely affecting the timely delivery of construction projects. Presently construction industries are facing a lot of problems, considering that a paper assess construction stakeholder’s perception to the causes of delays and its effects on project delivery. And also one case study is considered in this paper to elicit responses from construction stakeholders. The primary aim of this paper is to identify the perceptions of the different parties regarding causes of delays, the allocation of responsibilities and the types of delays, and method of minimizing the construction delays
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Effect of construction delays on project time overruneSAT Journals
Abstract The time and cost for performance of a project are usually important to the employer and contractor. About 57% of Indian construction projects are experiencing time overrun. These time overruns always contributed as expensive to all parties. This paper highlights the types of construction delays due to which project suffer time and cost overrun. Construction delay is considered to be one of the recurring problems in the construction industry and it has an adverse effect on project success in terms of time, cost and quality. The construction industry is the tool through which a society achieves its goal of urban and rural development. It is one of the sectors that provides important ingredient for the development of an economy. This paper studies external and internal factors that influence the construction process and outlines the effect of delay in large construction projects. Various media reports shows incidents of extended delays and extensive cost overruns in infrastructure projects. These delayed projects are further can conclude additional delays and this affects an ongoing projects and also new projects which could not be started due to pending projects whose completion date already elongated. Realizing the density of matter this paper studies the performance of previous year 2012 ongoing and also completed projects. These projects are from around 17 various central sectors costing Rs. 1000 crore and above (Mega Projects). Keywords: Delays, Time overrun, Cost overrun, Megaprojects etc
Mechanical properties of hybrid fiber reinforced concrete for pavementseSAT Journals
Abstract
The effect of addition of mono fibers and hybrid fibers on the mechanical properties of concrete mixture is studied in the present
investigation. Steel fibers of 1% and polypropylene fibers 0.036% were added individually to the concrete mixture as mono fibers and
then they were added together to form a hybrid fiber reinforced concrete. Mechanical properties such as compressive, split tensile and
flexural strength were determined. The results show that hybrid fibers improve the compressive strength marginally as compared to
mono fibers. Whereas, hybridization improves split tensile strength and flexural strength noticeably.
Keywords:-Hybridization, mono fibers, steel fiber, polypropylene fiber, Improvement in mechanical properties.
Material management in construction – a case studyeSAT Journals
Abstract
The objective of the present study is to understand about all the problems occurring in the company because of improper application
of material management. In construction project operation, often there is a project cost variance in terms of the material, equipments,
manpower, subcontractor, overhead cost, and general condition. Material is the main component in construction projects. Therefore,
if the material management is not properly managed it will create a project cost variance. Project cost can be controlled by taking
corrective actions towards the cost variance. Therefore a methodology is used to diagnose and evaluate the procurement process
involved in material management and launch a continuous improvement was developed and applied. A thorough study was carried
out along with study of cases, surveys and interviews to professionals involved in this area. As a result, a methodology for diagnosis
and improvement was proposed and tested in selected projects. The results obtained show that the main problem of procurement is
related to schedule delays and lack of specified quality for the project. To prevent this situation it is often necessary to dedicate
important resources like money, personnel, time, etc. To monitor and control the process. A great potential for improvement was
detected if state of the art technologies such as, electronic mail, electronic data interchange (EDI), and analysis were applied to the
procurement process. These helped to eliminate the root causes for many types of problems that were detected.
More Related Content
Similar to Analysis of factors contributing delays and claims in construction projects
Stakeholders’ Perception of the Causes and Effect of Construction Delays on P...IJMER
Indian Construction industry is large, volatile, and requires tremendous capital outlays. Typically, the work offers low rates of return in relation to the amount of risk involved. A unique element of risk in the industry is the manner in which disputes and claims are woven through the fibre of the construction process. Delay is generally acknowledged as the most common, costly, complex and risky problem encountered in construction projects. Because of the overriding importance of time for both the Owner and the Contractor, it is the source of frequent disputes and claims leading to lawsuits. The growing rate of delays is adversely affecting the timely delivery of construction projects. Presently construction industries are facing a lot of problems, considering that a paper assess construction stakeholder’s perception to the causes of delays and its effects on project delivery. And also one case study is considered in this paper to elicit responses from construction stakeholders. The primary aim of this paper is to identify the perceptions of the different parties regarding causes of delays, the allocation of responsibilities and the types of delays, and method of minimizing the construction delays
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Effect of construction delays on project time overruneSAT Journals
Abstract The time and cost for performance of a project are usually important to the employer and contractor. About 57% of Indian construction projects are experiencing time overrun. These time overruns always contributed as expensive to all parties. This paper highlights the types of construction delays due to which project suffer time and cost overrun. Construction delay is considered to be one of the recurring problems in the construction industry and it has an adverse effect on project success in terms of time, cost and quality. The construction industry is the tool through which a society achieves its goal of urban and rural development. It is one of the sectors that provides important ingredient for the development of an economy. This paper studies external and internal factors that influence the construction process and outlines the effect of delay in large construction projects. Various media reports shows incidents of extended delays and extensive cost overruns in infrastructure projects. These delayed projects are further can conclude additional delays and this affects an ongoing projects and also new projects which could not be started due to pending projects whose completion date already elongated. Realizing the density of matter this paper studies the performance of previous year 2012 ongoing and also completed projects. These projects are from around 17 various central sectors costing Rs. 1000 crore and above (Mega Projects). Keywords: Delays, Time overrun, Cost overrun, Megaprojects etc
Mechanical properties of hybrid fiber reinforced concrete for pavementseSAT Journals
Abstract
The effect of addition of mono fibers and hybrid fibers on the mechanical properties of concrete mixture is studied in the present
investigation. Steel fibers of 1% and polypropylene fibers 0.036% were added individually to the concrete mixture as mono fibers and
then they were added together to form a hybrid fiber reinforced concrete. Mechanical properties such as compressive, split tensile and
flexural strength were determined. The results show that hybrid fibers improve the compressive strength marginally as compared to
mono fibers. Whereas, hybridization improves split tensile strength and flexural strength noticeably.
Keywords:-Hybridization, mono fibers, steel fiber, polypropylene fiber, Improvement in mechanical properties.
Material management in construction – a case studyeSAT Journals
Abstract
The objective of the present study is to understand about all the problems occurring in the company because of improper application
of material management. In construction project operation, often there is a project cost variance in terms of the material, equipments,
manpower, subcontractor, overhead cost, and general condition. Material is the main component in construction projects. Therefore,
if the material management is not properly managed it will create a project cost variance. Project cost can be controlled by taking
corrective actions towards the cost variance. Therefore a methodology is used to diagnose and evaluate the procurement process
involved in material management and launch a continuous improvement was developed and applied. A thorough study was carried
out along with study of cases, surveys and interviews to professionals involved in this area. As a result, a methodology for diagnosis
and improvement was proposed and tested in selected projects. The results obtained show that the main problem of procurement is
related to schedule delays and lack of specified quality for the project. To prevent this situation it is often necessary to dedicate
important resources like money, personnel, time, etc. To monitor and control the process. A great potential for improvement was
detected if state of the art technologies such as, electronic mail, electronic data interchange (EDI), and analysis were applied to the
procurement process. These helped to eliminate the root causes for many types of problems that were detected.
Managing drought short term strategies in semi arid regions a case studyeSAT Journals
Abstract
Drought management needs multidisciplinary action. Interdisciplinary efforts among the experts in various fields of the droughts
prone areas are helpful to achieve tangible and permanent solution for this recurring problem. The Gulbarga district having the total
area around 16, 240 sq.km, and accounts 8.45 per cent of the Karnataka state area. The district has been situated with latitude 17º 19'
60" North and longitude of 76 º 49' 60" east. The district is situated entirely on the Deccan plateau positioned at a height of 300 to
750 m above MSL. Sub-tropical, semi-arid type is one among the drought prone districts of Karnataka State. The drought
management is very important for a district like Gulbarga. In this paper various short term strategies are discussed to mitigate the
drought condition in the district.
Keywords: Drought, South-West monsoon, Semi-Arid, Rainfall, Strategies etc.
Life cycle cost analysis of overlay for an urban road in bangaloreeSAT Journals
Abstract
Pavements are subjected to severe condition of stresses and weathering effects from the day they are constructed and opened to traffic
mainly due to its fatigue behavior and environmental effects. Therefore, pavement rehabilitation is one of the most important
components of entire road systems. This paper highlights the design of concrete pavement with added mono fibers like polypropylene,
steel and hybrid fibres for a widened portion of existing concrete pavement and various overlay alternatives for an existing
bituminous pavement in an urban road in Bangalore. Along with this, Life cycle cost analyses at these sections are done by Net
Present Value (NPV) method to identify the most feasible option. The results show that though the initial cost of construction of
concrete overlay is high, over a period of time it prove to be better than the bituminous overlay considering the whole life cycle cost.
The economic analysis also indicates that, out of the three fibre options, hybrid reinforced concrete would be economical without
compromising the performance of the pavement.
Keywords: - Fatigue, Life cycle cost analysis, Net Present Value method, Overlay, Rehabilitation
Laboratory studies of dense bituminous mixes ii with reclaimed asphalt materialseSAT Journals
Abstract
The issue of growing demand on our nation’s roadways over that past couple of decades, decreasing budgetary funds, and the need to
provide a safe, efficient, and cost effective roadway system has led to a dramatic increase in the need to rehabilitate our existing
pavements and the issue of building sustainable road infrastructure in India. With these emergency of the mentioned needs and this
are today’s burning issue and has become the purpose of the study.
In the present study, the samples of existing bituminous layer materials were collected from NH-48(Devahalli to Hassan) site.The
mixtures were designed by Marshall Method as per Asphalt institute (MS-II) at 20% and 30% Reclaimed Asphalt Pavement (RAP).
RAP material was blended with virgin aggregate such that all specimens tested for the, Dense Bituminous Macadam-II (DBM-II)
gradation as per Ministry of Roads, Transport, and Highways (MoRT&H) and cost analysis were carried out to know the economics.
Laboratory results and analysis showed the use of recycled materials showed significant variability in Marshall Stability, and the
variability increased with the increase in RAP content. The saving can be realized from utilization of recycled materials as per the
methodology, the reduction in the total cost is 19%, 30%, comparing with the virgin mixes.
Keywords: Reclaimed Asphalt Pavement, Marshall Stability, MS-II, Dense Bituminous Macadam-II
Laboratory investigation of expansive soil stabilized with natural inorganic ...eSAT Journals
Abstract
Soil stabilization has proven to be one of the oldest techniques to improve the soil properties. Literature review conducted revealed
that uses of natural inorganic stabilizers are found to be one of the best options for soil stabilization. In this regard an attempt has
been made to evaluate the influence of RBI-81 stabilizer on properties of black cotton soil through laboratory investigations. Black
cotton soil with varying percentages of RBI-81 viz., 0, 0.5, 1, 1.5, 2, and 2.5 percent were studied for moisture density relationships
and strength behaviour of soils. Also the effect of curing period was evaluated as literature review clearly emphasized the strength
gain of soils stabilized with RBI-81 over a period of time. The results obtained shows that the unconfined compressive strength of
specimens treated with RBI-81 increased approximately by 250% for a curing period of 28 days as compared to virgin soil. Further
the CBR value improved approximately by 400%. The studies indicated an increasing trend for soil strength behaviour with
increasing percentage of RBI-81 suggesting its potential applications in soil stabilization.
Influence of reinforcement on the behavior of hollow concrete block masonry p...eSAT Journals
Abstract
Reinforced masonry was developed to exploit the strength potential of masonry and to solve its lack of tensile strength. Experimental
and analytical studies have been carried out to investigate the effect of reinforcement on the behavior of hollow concrete block
masonry prisms under compression and to predict ultimate failure compressive strength. In the numerical program, three dimensional
non-linear finite elements (FE) model based on the micro-modeling approach is developed for both unreinforced and reinforced
masonry prisms using ANSYS (14.5). The proposed FE model uses multi-linear stress-strain relationships to model the non-linear
behavior of hollow concrete block, mortar, and grout. Willam-Warnke’s five parameter failure theory has been adopted to model the
failure of masonry materials. The comparison of the numerical and experimental results indicates that the FE models can successfully
capture the highly nonlinear behavior of the physical specimens and accurately predict their strength and failure mechanisms.
Keywords: Structural masonry, Hollow concrete block prism, grout, Compression failure, Finite element method,
Numerical modeling.
Influence of compaction energy on soil stabilized with chemical stabilizereSAT Journals
Abstract
Increase in traffic along with heavier magnitude of wheel loads cause rapid deterioration in pavements. There is a need to improve
density, strength of soil subgrade and other pavement layers. In this study an attempt is made to improve the properties of locally
available loamy soil using twin approaches viz., i) increasing the compaction of soil and ii) treating the soil with chemical stabilizer.
Laboratory studies are carried out on both untreated and treated soil samples compacted by different compaction efforts. Studies
show that increase in compaction effort results in increase in density of soil. However in soil treated with chemical stabilizer, rate of
increase in density is not significant. The soil treated with chemical stabilizer exhibits improvement in both strength and performance
properties.
Keywords: compaction, density, subgradestabilization, resilient modulus
Geographical information system (gis) for water resources managementeSAT Journals
Abstract
Water resources projects are inherited with overlapping and at times conflicting objectives. These projects are often of varied sizes
ranging from major projects with command areas of millions of hectares to very small projects implemented at the local level. Thus,
in all these projects there is seldom proper coordination which is essential for ensuring collective sustainability.
Integrated watershed development and management is the accepted answer but in turn requires a comprehensive framework that can
enable planning process involving all the stakeholders at different levels and scales is compulsory. Such a unified hydrological
framework is essential to evaluate the cause and effect of all the proposed actions within the drainage basins.
The present paper describes a hydrological framework developed in the form of a Hydrologic Information System (HIS) which is
intended to meet the specific information needs of the various line departments of a typical State connected with water related aspects.
The HIS consist of a hydrologic information database coupled with tools for collating primary and secondary data and tools for
analyzing and visualizing the data and information. The HIS also incorporates hydrological model base for indirect assessment of
various entities of water balance in space and time. The framework would be maintained and updated to reflect fully the most
accurate ground truth data and the infrastructure requirements for planning and management.
Keywords: Hydrological Information System (HIS); WebGIS; Data Model; Web Mapping Services
Forest type mapping of bidar forest division, karnataka using geoinformatics ...eSAT Journals
Abstract
The study demonstrate the potentiality of satellite remote sensing technique for the generation of baseline information on forest types
including tree plantation details in Bidar forest division, Karnataka covering an area of 5814.60Sq.Kms. The Total Area of Bidar
forest division is 5814Sq.Kms analysis of the satellite data in the study area reveals that about 84% of the total area is Covered by
crop land, 1.778% of the area is covered by dry deciduous forest, 1.38 % of mixed plantation, which is very threatening to the
environmental stability of the forest, future plantation site has been mapped. With the use of latest Geo-informatics technology proper
and exact condition of the trees can be observed and necessary precautions can be taken for future plantation works in an appropriate
manner
Keywords:-RS, GIS, GPS, Forest Type, Tree Plantation
Factors influencing compressive strength of geopolymer concreteeSAT Journals
Abstract
To study effects of several factors on the properties of fly ash based geopolymer concrete on the compressive strength and also the
cost comparison with the normal concrete. The test variables were molarities of sodium hydroxide(NaOH) 8M,14M and 16M, ratio of
NaOH to sodium silicate (Na2SiO3) 1, 1.5, 2 and 2.5, alkaline liquid to fly ash ratio 0.35 and 0.40 and replacement of water in
Na2SiO3 solution by 10%, 20% and 30% were used in the present study. The test results indicated that the highest compressive
strength 54 MPa was observed for 16M of NaOH, ratio of NaOH to Na2SiO3 2.5 and alkaline liquid to fly ash ratio of 0.35. Lowest
compressive strength of 27 MPa was observed for 8M of NaOH, ratio of NaOH to Na2SiO3 is 1 and alkaline liquid to fly ash ratio of
0.40. Alkaline liquid to fly ash ratio of 0.35, water replacement of 10% and 30% for 8 and 16 molarity of NaOH and has resulted in
compressive strength of 36 MPa and 20 MPa respectively. Superplasticiser dosage of 2 % by weight of fly ash has given higher
strength in all cases.
Keywords: compressive strength, alkaline liquid, fly ash
Experimental investigation on circular hollow steel columns in filled with li...eSAT Journals
Abstract
Composite Circular hollow Steel tubes with and without GFRP infill for three different grades of Light weight concrete are tested for
ultimate load capacity and axial shortening , under Cyclic loading. Steel tubes are compared for different lengths, cross sections and
thickness. Specimens were tested separately after adopting Taguchi’s L9 (Latin Squares) Orthogonal array in order to save the initial
experimental cost on number of specimens and experimental duration. Analysis was carried out using ANN (Artificial Neural
Network) technique with the assistance of Mini Tab- a statistical soft tool. Comparison for predicted, experimental & ANN output is
obtained from linear regression plots. From this research study, it can be concluded that *Cross sectional area of steel tube has most
significant effect on ultimate load carrying capacity, *as length of steel tube increased- load carrying capacity decreased & *ANN
modeling predicted acceptable results. Thus ANN tool can be utilized for predicting ultimate load carrying capacity for composite
columns.
Keywords: Light weight concrete, GFRP, Artificial Neural Network, Linear Regression, Back propagation, orthogonal
Array, Latin Squares
Experimental behavior of circular hsscfrc filled steel tubular columns under ...eSAT Journals
Abstract
This paper presents an outlook on experimental behavior and a comparison with predicted formula on the behaviour of circular
concentrically loaded self-consolidating fibre reinforced concrete filled steel tube columns (HSSCFRC). Forty-five specimens were
tested. The main parameters varied in the tests are: (1) percentage of fiber (2) tube diameter or width to wall thickness ratio (D/t
from 15 to 25) (3) L/d ratio from 2.97 to 7.04 the results from these predictions were compared with the experimental data. The
experimental results) were also validated in this study.
Keywords: Self-compacting concrete; Concrete-filled steel tube; axial load behavior; Ultimate capacity.
Evaluation of punching shear in flat slabseSAT Journals
Abstract
Flat-slab construction has been widely used in construction today because of many advantages that it offers. The basic philosophy in
the design of flat slab is to consider only gravity forces; this method ignores the effect of punching shear due to unbalanced moments
at the slab column junction which is critical. An attempt has been made to generate generalized design sheets which accounts both
punching shear due to gravity loads and unbalanced moments for cases (a) interior column; (b) edge column (bending perpendicular
to shorter edge); (c) edge column (bending parallel to shorter edge); (d) corner column. These design sheets are prepared as per
codal provisions of IS 456-2000. These design sheets will be helpful in calculating the shear reinforcement to be provided at the
critical section which is ignored in many design offices. Apart from its usefulness in evaluating punching shear and the necessary
shear reinforcement, the design sheets developed will enable the designer to fix the depth of flat slab during the initial phase of the
design.
Keywords: Flat slabs, punching shear, unbalanced moment.
Evaluation of performance of intake tower dam for recent earthquake in indiaeSAT Journals
Abstract
Intake towers are typically tall, hollow, reinforced concrete structures and form entrance to reservoir outlet works. A parametric
study on dynamic behavior of circular cylindrical towers can be carried out to study the effect of depth of submergence, wall thickness
and slenderness ratio, and also effect on tower considering dynamic analysis for time history function of different soil condition and
by Goyal and Chopra accounting interaction effects of added hydrodynamic mass of surrounding and inside water in intake tower of
dam
Key words: Hydrodynamic mass, Depth of submergence, Reservoir, Time history analysis,
Evaluation of operational efficiency of urban road network using travel time ...eSAT Journals
Abstract
Efficiency of the road network system is analyzed by travel time reliability measures. The study overlooks on an important measure of
travel time reliability and prioritizing Tiruchirappalli road network. Traffic volume and travel time were collected using license plate
matching method. Travel time measures were estimated from average travel time and 95th travel time. Effect of non-motorized vehicle
on efficiency of road system was evaluated. Relation between buffer time index and traffic volume was created. Travel time model has
been developed and travel time measure was validated. Then service quality of road sections in network were graded based on
travel time reliability measures.
Keywords: Buffer Time Index (BTI); Average Travel Time (ATT); Travel Time Reliability (TTR); Buffer Time (BT).
Estimation of surface runoff in nallur amanikere watershed using scs cn methodeSAT Journals
Abstract
The development of watershed aims at productive utilization of all the available natural resources in the entire area extending from
ridge line to stream outlet. The per capita availability of land for cultivation has been decreasing over the years. Therefore, water and
the related land resources must be developed, utilized and managed in an integrated and comprehensive manner. Remote sensing and
GIS techniques are being increasingly used for planning, management and development of natural resources. The study area, Nallur
Amanikere watershed geographically lies between 110 38’ and 110 52’ N latitude and 760 30’ and 760 50’ E longitude with an area of
415.68 Sq. km. The thematic layers such as land use/land cover and soil maps were derived from remotely sensed data and overlayed
through ArcGIS software to assign the curve number on polygon wise. The daily rainfall data of six rain gauge stations in and around
the watershed (2001-2011) was used to estimate the daily runoff from the watershed using Soil Conservation Service - Curve Number
(SCS-CN) method. The runoff estimated from the SCS-CN model was then used to know the variation of runoff potential with different
land use/land cover and with different soil conditions.
Keywords: Watershed, Nallur watershed, Surface runoff, Rainfall-Runoff, SCS-CN, Remote Sensing, GIS.
Estimation of morphometric parameters and runoff using rs & gis techniqueseSAT Journals
Abstract
Land and water are the two vital natural resources, the optimal management of these resources with minimum adverse environmental
impact are essential not only for sustainable development but also for human survival. Satellite remote sensing with geographic
information system has a pragmatic approach to map and generate spatial input layers of predicting response behavior and yield of
watershed. Hence, in the present study an attempt has been made to understand the hydrological process of the catchment at the
watershed level by drawing the inferences from moprhometric analysis and runoff. The study area chosen for the present study is
Yagachi catchment situated in Chickamaglur and Hassan district lies geographically at a longitude 75⁰52’08.77”E and
13⁰10’50.77”N latitude. It covers an area of 559.493 Sq.km. Morphometric analysis is carried out to estimate morphometric
parameters at Micro-watershed to understand the hydrological response of the catchment at the Micro-watershed level. Daily runoff
is estimated using USDA SCS curve number model for a period of 10 years from 2001 to 2010. The rainfall runoff relationship of the
study shows there is a positive correlation.
Keywords: morphometric analysis, runoff, remote sensing and GIS, SCS - method
-
Effect of variation of plastic hinge length on the results of non linear anal...eSAT Journals
Abstract The nonlinear Static procedure also well known as pushover analysis is method where in monotonically increasing loads are applied to the structure till the structure is unable to resist any further load. It is a popular tool for seismic performance evaluation of existing and new structures. In literature lot of research has been carried out on conventional pushover analysis and after knowing deficiency efforts have been made to improve it. But actual test results to verify the analytically obtained pushover results are rarely available. It has been found that some amount of variation is always expected to exist in seismic demand prediction of pushover analysis. Initial study is carried out by considering user defined hinge properties and default hinge length. Attempt is being made to assess the variation of pushover analysis results by considering user defined hinge properties and various hinge length formulations available in literature and results compared with experimentally obtained results based on test carried out on a G+2 storied RCC framed structure. For the present study two geometric models viz bare frame and rigid frame model is considered and it is found that the results of pushover analysis are very sensitive to geometric model and hinge length adopted. Keywords: Pushover analysis, Base shear, Displacement, hinge length, moment curvature analysis
Effect of use of recycled materials on indirect tensile strength of asphalt c...eSAT Journals
Abstract
Depletion of natural resources and aggregate quarries for the road construction is a serious problem to procure materials. Hence
recycling or reuse of material is beneficial. On emphasizing development in sustainable construction in the present era, recycling of
asphalt pavements is one of the effective and proven rehabilitation processes. For the laboratory investigations reclaimed asphalt
pavement (RAP) from NH-4 and crumb rubber modified binder (CRMB-55) was used. Foundry waste was used as a replacement to
conventional filler. Laboratory tests were conducted on asphalt concrete mixes with 30, 40, 50, and 60 percent replacement with RAP.
These test results were compared with conventional mixes and asphalt concrete mixes with complete binder extracted RAP
aggregates. Mix design was carried out by Marshall Method. The Marshall Tests indicated highest stability values for asphalt
concrete (AC) mixes with 60% RAP. The optimum binder content (OBC) decreased with increased in RAP in AC mixes. The Indirect
Tensile Strength (ITS) for AC mixes with RAP also was found to be higher when compared to conventional AC mixes at 300C.
Keywords: Reclaimed asphalt pavement, Foundry waste, Recycling, Marshall Stability, Indirect tensile strength.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
NUMERICAL SIMULATIONS OF HEAT AND MASS TRANSFER IN CONDENSING HEAT EXCHANGERS...ssuser7dcef0
Power plants release a large amount of water vapor into the
atmosphere through the stack. The flue gas can be a potential
source for obtaining much needed cooling water for a power
plant. If a power plant could recover and reuse a portion of this
moisture, it could reduce its total cooling water intake
requirement. One of the most practical way to recover water
from flue gas is to use a condensing heat exchanger. The power
plant could also recover latent heat due to condensation as well
as sensible heat due to lowering the flue gas exit temperature.
Additionally, harmful acids released from the stack can be
reduced in a condensing heat exchanger by acid condensation. reduced in a condensing heat exchanger by acid condensation.
Condensation of vapors in flue gas is a complicated
phenomenon since heat and mass transfer of water vapor and
various acids simultaneously occur in the presence of noncondensable
gases such as nitrogen and oxygen. Design of a
condenser depends on the knowledge and understanding of the
heat and mass transfer processes. A computer program for
numerical simulations of water (H2O) and sulfuric acid (H2SO4)
condensation in a flue gas condensing heat exchanger was
developed using MATLAB. Governing equations based on
mass and energy balances for the system were derived to
predict variables such as flue gas exit temperature, cooling
water outlet temperature, mole fraction and condensation rates
of water and sulfuric acid vapors. The equations were solved
using an iterative solution technique with calculations of heat
and mass transfer coefficients and physical properties.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
HEAP SORT ILLUSTRATED WITH HEAPIFY, BUILD HEAP FOR DYNAMIC ARRAYS.
Heap sort is a comparison-based sorting technique based on Binary Heap data structure. It is similar to the selection sort where we first find the minimum element and place the minimum element at the beginning. Repeat the same process for the remaining elements.
CW RADAR, FMCW RADAR, FMCW ALTIMETER, AND THEIR PARAMETERSveerababupersonal22
It consists of cw radar and fmcw radar ,range measurement,if amplifier and fmcw altimeterThe CW radar operates using continuous wave transmission, while the FMCW radar employs frequency-modulated continuous wave technology. Range measurement is a crucial aspect of radar systems, providing information about the distance to a target. The IF amplifier plays a key role in signal processing, amplifying intermediate frequency signals for further analysis. The FMCW altimeter utilizes frequency-modulated continuous wave technology to accurately measure altitude above a reference point.
CW RADAR, FMCW RADAR, FMCW ALTIMETER, AND THEIR PARAMETERS
Analysis of factors contributing delays and claims in construction projects
1. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
__________________________________________________________________________________________
IC-RICE Conference Issue | Nov-2013, Available @ http://www.ijret.org 390
ANALYSIS OF FACTORS CONTRIBUTING DELAYS AND CLAIMS IN
CONSTRUCTION PROJECTS
Ketki S. Kamble1
, A. R. Kambekar2
1
PG. Student, Const. Management, 2
Assistant Professor, CED, SPCE Andheri (W), Mumbai 400058, Maharashtra,
ketki08@gmail.com
Abstract
Construction activities are the most competitive and it involves higher risk with minimum profitability due to competition.
Construction of any infrastructural work involves complex management skills related to manpower, materials, plant, machineries,
new technologies etc. It also involves many agencies interdependent on each other like the planners, structural and functional
designers including various types of specialized engineers and it also includes support of financial institutions, insurers, contractors
and specialized contractors. As there are prevailing labour bye laws it needs special care of their well beings. In such kind of complex
and intense framework some disputes is quite natural between the agencies involved in such activities which further results in claims
management as the unsettled dispute finally leads to financial claims. Higher incidences of disputes are generally reported from the
construction contract. Even if there is an appropriate understanding of construction contract clauses from the agencies in the
agreement yet claims seems to be a major crisis in the construction sector. The research reported in this paper aims in identifying the
major factors responsible of project delay that may give rise to claims for delay damages. The in this paper research mainly highlights
on finding the major components of claims with perspective of contractor for delay damages.
Keywords: Claims, delay, damages, construction industry, disputes.
--------------------------------------------------------------------***---------------------------------------------------------------------
1. INTRODUCTION
Claims as per Hughes [1] “It is a demand, a request or
application for something to which a contractor considers,
believes or contends he is entitled but in respect of which
agreement has not yet been reached”. As per Harris [2] the
major five causes of disputes in Asian construction projects
are as follows:
• Failure to make interim awards on extensions of time
and to give associated compensation
• Unrealistic risk transfer from employers to
contractors
• Conflicting party interests
• An unrealistic contract completion date being defined
at tender stage
• Incomplete design information or employer
requirements.
In general it was reported in literature that the construction
sector involves disputes from the sources like changes which
includes variation, alteration, addition, deletion, delays and
suspensions, differing site conditions, unjust enrichment by
owners. It was also observed that there are five potential areas
which can give rise to disputes: document errors, estimation
errors, change in conditions, implied promises and agencies
involved. Claims however fall under two major categories
based on their occurrence i.e. during (i) execution of contract
and (ii) administration of contract. Execution of contract
includes claims due to change in design and drawing, delays in
handing over site/issuance of drawings/getting clearance
certificate from appropriate authorities, claims due to original
scope of work change, claims due to differing site conditions
and claims due to variation in methodology. Similarly during
administration of contract claims may be due to delay in
payment of running account bills and claims due to
foreclosure/termination of contract. Similarly delays in
schedules of construction projects are one of the most
common types of disputes in the construction industry. The
client and contractor works for a common objective i.e. to
complete the project within scheduled time as well as cost.
Time overrun is the most common failure of objective that in
turn leads to cost overrun and hence failure in the objective of
timely completion leads to failure of overall project budget
which ultimately gives rise to disputes. The reasons for delays
could be caused by client, contractor, force majeure i.e. act of
God, change in laws, rules and regulations, improper co-
ordination between client and contractors, non-availability of
required skilled labour, non-availability of required special
material, differing site conditions, non-issuance of working
drawing and changes in work leading to change in
methodology. Delays can be further classified as excusable or
non-excusable. Some of the practical cases of non-excusable
delays are incompetent sub-contractor, financial incompetency
of the contractor, labour disputes hindering work progress,
poor workmanship leading to rework, poor material quality
and delay in handing over the site by client and excusable
2. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
__________________________________________________________________________________________
IC-RICE Conference Issue | Nov-2013, Available @ http://www.ijret.org 391
delay includes sudden floods, natural calamities like
earthquake, tsunami etc. riots, labour strike, non-foreseeable
situation. Critical delay are defined as a delay in any given
activity which results in delay of total project and non-critical
delay is defined as delays which may not upset total time
frame of the contract [1].
This paper mainly focuses on delay damage claims related to
additional cost incurred by the contractor due to delay caused
by the client. Evaluation of delay damages are when a
contractor bids for a tender, a number of factors are considered
apart from the labour, material and equipment that are
required to execute the work. In tender the duration required to
complete the work is generally mentioned and hence the
contractor quotes accordingly. The quote includes material
cost, labour cost, plant and machinery cost, shuttering
material, human resource cost, financial cost, site overheads
and above all profit. In an event of prolongation of contract,
the major factors that are affected are additional overheads,
plant and machinery, labour and material cost, loss of
productivity, loss of profit, loss of new business opportunities
and early mobilization.
2. METHODOLOGY ADOPTED
Following methodology is adopted for this research work.
This includes identification of claims that occur, factors
responsible for delay, prolongation claim if any, focus on
factors that are affected due to delay in completion the project,
factors mostly considered while setting up prolongation claim,
ranking based on case studies to understand the major factor
affecting the delay damages claim finally recommendations
based on the study. The delays which occur in construction
projects are due to various reasons. Analysis of three projects
have been carried out details of the same is given in Table 1.
Project cost, value of claims and claim in % of project cost for
(i) construction of mall in Mumbai, (ii) construction of hotel
and casino in Goa and (iii) construction of power transmission
tower in Raigad district of Maharashtra is considered in this
paper. The range of delay claims by contractor was in the
range of around 1.08 % to 400% of the project cost. This may
due to various reasons.
Table1. Analysis of delay damages in construction projects.
Sr. No
Project
description
Project
cost
(Lakhs
Rs.)
Value
of claim
(Lakhs
Rs.)
Claim
in % of
project
cost
1
Construction
of mall in
Mumbai.
4314 623.58 14.45%
2
Construction
of hotel and
casino in
Goa.
3494 37.68 1.08%
3
Construction
of power
transmission
tower
foundation
in Raigad
district.
12.43 49.64 400%
2.1 Project 1: Construction of Mall in Mumbai
Construction of a mall in Mumbai was taken as first case study
for delay claims. The project cost was around 4314 Lakhs Rs.,
claim amount by contractor was 623.58 Lakhs Rs. and delay
was almost of 7 months. Various reasons for claims observed
in this case includes the mainly due to delay in approved
drawings. The total built up area was around 6,77,000 Sq.ft.
and large quantity of MS shuttering material was required to
be deployed on site. Since the work was suspended in the
middle of project, the resources like staff, machinery was
demobilized and transferred to other project, but it was
difficult to transfer the shuttering material to other site since
the cost of transportation for demobilizing and again
mobilizing when the work resumes was observed as a
governing factor. Hence in this project 81% of Claim
constitutes for M.S Shuttering Material. Details of claim for
various reasons in % for project 1 are shown in Table 2. This
includes claims for MS shuttering material, labour, overheads
and machinery. Next section gives similar analysis for
construction of hotel and casino in Goa.
Table2 Details of claim for project 1
Sr.
No.
Description
Claim
amount
(In Lakhs
Rs.)
Claim
in % of
project
cost
Importance
as per
claim
amount
1
M.S.
Shuttering
Material
503.08 81% 1
2 Labour 58.24 9% 2
3 Overheads 47.50 8% 3
4 Machinery 14.75 2% 4
Total claim
(In Lakhs Rs.)
623.58
2.2 Project 2: Construction of Hotel and Casino in
Goa
The construction of hotel and casino in Goa was having
estimated project cost of 3494 Lakhs Rs. and the claim was
37.68 Lakhs Rs with delay of 1 month. It was noted that the
work order given shows the site mobilization within 15 days
and in the tender it was also mentioned the minimum staff
cadre and equipment needs to be deployed on site at the time
of mobilization. Table 3 gives details of claim for various
reasons in % for project 2 showing importance as per claim
3. IJRET: International Journal of Research in Engineering and Technolo
__________________________________________________________________________________________
IC-RICE Conference Issue | Nov-2013, Available @
amount. As per the conditions the contractor mobilized the s
with the required resources but there was a delay of 1 month
in handing over the site. In this case the amount of
M.S. shuttering material, overheads and machinery
same, since the claim was at the start of the project hence the
minimum resources were deployed. The third case study
includes the construction of power transmis
foundation in Raigad district detailed analysis is given in the
next section.
Table3. Details of claim for project 2.
Sr.
No.
Description
Claim
amount
(In
Lakhs
Rs.)
Claim in
% of
project
cost
1
M.S
shuttering
material
10.93 29%
2 Overheads 10.60 28%
3 Machinery 9.55 25%
4 Labour 6.60 18%
Total claim
(In Lakhs Rs.)
37.68
2.3 Project 3. Construction of Power Transmission
Tower Foundation in Raigad District
The scope of work in this case study was to construct RCC
power transmission tower foundation at
locations. Table 4 gives details of claim for project 3.
work was supposed to be executed after getting unhindered
land at all the four locations along with the necessary
9%
2% 8%
IJRET: International Journal of Research in Engineering and Technology eISSN: 2319
__________________________________________________________________________________________
2013, Available @ http://www.ijret.org
ontractor mobilized the site
ut there was a delay of 1 month
this case the amount of claim for
achinery was almost
at the start of the project hence the
The third case study
includes the construction of power transmission tower
foundation in Raigad district detailed analysis is given in the
project 2.
Claim in
project
Importance
as per
claim
amount
1
2
3
4
Power Transmission
was to construct RCC
foundation at four different
Table 4 gives details of claim for project 3. The
to be executed after getting unhindered
along with the necessary
approvals from the local authorities. It was
that all four locations would
project. The duration of project was 45 days. The contractor
mobilized the site with adequate resources
of all the four location was not
working drawing was not issued
local authorities was not taken by the
cost was 12.43 Lakhs Rs., c
and the delay resulted the work to be completed in 14.5
months leading to total delay of
details of claims by contractor for project 1, 2 and 3 on various
elements of the respective projects.
Table4. Details of
Sr.
No.
Description
Claim
amount
(In
Lakhs
Rs.)
1 Labour 21
2
M.S
Shuttering
Material
10
3 Overheads 10
4 Machinery 6.
Total claim
(In Lakhs Rs.)
49
(a)
81%
8%
Project 1.
M.S. Shuttering Material
Labour
Machinery
Overheads
eISSN: 2319-1163 | pISSN: 2321-7308
__________________________________________________________________________________________
392
from the local authorities. It was also mentioned
ould be made available at the start of
project. The duration of project was 45 days. The contractor
mobilized the site with adequate resources but the possession
location was not allotted to the contractor. The
not issued and the permission from the
not taken by the client. The total project
Rs., claim amount was 49.64 Lakhs Rs.
sulted the work to be completed in 14.5
total delay of 13 months. Figure 1 shows
details of claims by contractor for project 1, 2 and 3 on various
elements of the respective projects.
Details of claim for project 3
Claim
amount
(In
Lakhs
Rs.)
Claim in
% of
project
cost
Importance
as per claim
amount
21.58 40% 1
10.79 20% 2
10.79 20% 2
.47 12% 3
49.64
M.S. Shuttering Material
4. IJRET: International Journal of Research in Engineering and Technolo
__________________________________________________________________________________________
IC-RICE Conference Issue | Nov-2013, Available @
Fig1. Details of claims by contractor for
CONCLUSIONS
The investigation in this work was to identify the major
factors responsible for project delay that may give rise to
claims for delay damages for three major projects of 1.
Construction of mall, 2. Construction of hotel and casino and
3. Construction of power transmission tower at various
locations of India. The main highlights in this study are to find
out the major components of claims with perspective of
contractor for delay damages. For mall project it can be seen
that M.S. shuttering material is most affected factor of delay
damages. This is because normally mall constructions are
wide spread and the area required for construction is more and
hence shuttering required to support the plywood is required in
huge quantities. If the project is suspended or
charges for the material mounts to a huge expenditure. In case
of hotel and casino construction delay in project was
due to handing over of site hence all the M.S shuttering
material, labour, staff, equipment which were mobilized
underutilized. In this case it was observed that all
25%
18%
20%
20%
12%
IJRET: International Journal of Research in Engineering and Technology eISSN: 2319
__________________________________________________________________________________________
2013, Available @ http://www.ijret.org
Details of claims by contractor for (a) project 1, (b) project 2 and (c) project 3 on various elements
The investigation in this work was to identify the major
project delay that may give rise to
claims for delay damages for three major projects of 1.
Construction of mall, 2. Construction of hotel and casino and
wer transmission tower at various
locations of India. The main highlights in this study are to find
out the major components of claims with perspective of
all project it can be seen
ffected factor of delay
damages. This is because normally mall constructions are
wide spread and the area required for construction is more and
hence shuttering required to support the plywood is required in
huge quantities. If the project is suspended or delayed the idle
charges for the material mounts to a huge expenditure. In case
in project was mainly
due to handing over of site hence all the M.S shuttering
which were mobilized but
underutilized. In this case it was observed that all four factors
are equally contributing delay.
for power transmission tower
was due to not handing over
unhindered at the same time
project was supposed to be completed in
time was the key factor and t
complete project but work front
labour factor was the majo
RECOMMENDATIONS
Following are some of the
contractors of the construction projects
(1) Recommendations for Client:
have proper of planning before awarding the work.
The design and drawing should be ready before hand
to avoid any delay in work.
completely handed over instead of piece meal.
analysis of all factors which may lead to delay in
work from their end should be taken
(b)
(c)
29%
28%
18%
Project 2.
M.S. Shuttering Material
Labour
Machinery
Overheads
40%
20%
Project 3.
M.S. Shuttering Material
Labour
Overheads
Machinery
eISSN: 2319-1163 | pISSN: 2321-7308
__________________________________________________________________________________________
393
3 on various elements
ng delay. In case of claims by contractor
ower foundation project, the delay
handing over of all the four locations
at the same time and delay in drawings. Since the
be completed in one and half months,
the key factor and the contractor mobilized for the
complete project but work front was not given. Hence the
major affected factor in this case.
RECOMMENDATIONS
are some of the recommendations for clients and
contractors of the construction projects
Recommendations for Client: the client should
have proper of planning before awarding the work.
and drawing should be ready before hand
to avoid any delay in work. The site should be
completely handed over instead of piece meal. Risk
analysis of all factors which may lead to delay in
end should be taken care of.
M.S. Shuttering Material
Machinery
Overheads
M.S. Shuttering Material
Overheads
Machinery
5. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
__________________________________________________________________________________________
IC-RICE Conference Issue | Nov-2013, Available @ http://www.ijret.org 394
(2) Recommendation for Contractor: It is the duty of
the contractor to validate the drawings given by client
at the time of bidding the tender. The contractor must
also analyze all the factors which may lead to delays
from government bodies, changes in rules and
regulations. The contractor should also be financially
stable to digest the cost overrun leading to delays
REFERENCES
[1] ED-ON Centre lecture notes: “One day workshop on
Contract Administration and Arbitration”. Pages 37-43.
[2] E. C. Harris: “Global Construction Disputes 2012:
Moving in the Right Direction” Pages 3-5 (2012)