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Proceeding of World Conference
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Economics, Econometrics & Finance Education Engineering Mathematics Medicine & Pharmacology
Proceeding of World Conference, is Publication of conference articles in the field of multidisciplinary sciences published by the World conference; aims to make it easier for readers and writers to access articles during time and make it easier to download and distribute.
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Articles 265 Documents
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Effects of Using Benzalkonium Chloride (BZK) Disinfectant Against Density and Compressive Strength of Concrete Hari Prasetiyo; Agung Sumarno
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

During the Covid-19 pandemic, where’s the number of infections was increasing every day, there were many uses of massive disinfectants as a means of suppressing the spread of viruses in the environment. No exception, buildings, structures, and residential areas are also exposed to disinfectants every day to avoid and kill the growth of invisible viruses around us. The use of chemical disinfectants such as Benzalkonium Chloride contained on floor cleaning products is often used by the public and even disinfection officers because they are easy to get. The purpose of this study was to determine the disinfectant effect of Benzalkonium Chloride with the recommended level of disinfection dissolving spray and soak (penetration) on the density and compressive strength of concrete. The method used in this research was experimental by conducting trial mixes and special treatments that are carried out at the Becakayu Toll Road Concrete Batching Plant Laboratory - PT. Waskita Beton Precast, Tbk. From the results of the study, it was concluded that the decrease in density in the concrete with Benzalkonium Chloride spray treatment and normal water spray had an average density decrease and the concrete with Benzalkonium Chloride spray had a higher reduction value than that of water spray treatment, whereas in the samples the penetration treatment of Benzalkonium Chloride and normal water curing had an average density increase and the penetration treatment of Benzalkonium Chloride had a higher density value than that of normal water curing concrete. For the results of the compressive strength of the test objects at all qualities (K-175, K-300, and K-500), Benzalkonium Chloride spray treatment and water spray experienced an increase in compressive strength at the age of 14 days but the compressive strength decreased again at the age of 28 days, whereas the benzalkonium Chloride spray treatment sample on average has a lower compressive strength than the water sprayed test sample.
Factors Affecting Delays in Luwansa Manado Hotel Project Anjas Handayani; Abid Nur Affani
Journal of World Conference (JWC) Vol. 3 No. 1 (2021): January 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Building construction in Indonesia from year to year is growing, especially in the construction world. The increasing number of construction service providers in recent times should be offset by cost savings, quality in accordance with standards and also project time management. In Indonesia especially in Manado city there are many hotel developments, one of which is the construction of Hotel Luwansa manado. Acting as the main contractor (Main Contractor) of PT. Recta Construction, as the winner of the tender of the project. The construction of Hotel Luwansa Manado is one of the hotel developments not far from Manado City Beach which has 1 Tower, covering 10 floors, roof top, and 2 basements. At the time of implementation of the project one of the sub contractors had already started the foundation work in July 2019 and should have been completed in October 2019. However, the design of the foundation work on the project retreated to January 2020, due to design changes and resulted in the addition of foundation work at The Luwansa Hotel Project Manado. The method carried out in this study is the collection of data through questionnaires distributed to several respondents. The method of analysis performed is quantitative descriptive. The quantitative approach is research that focuses on hypothesis testing, the data used must be measured, and produce a generalized conclusion. This method uses (analysis tools) inference statistics (inconclusive). This method of analysis aims to describe the delay in construction work of Hotel Luwansa Manado building. From the analysis using the SPSS program there are five dominant variables namely X18 of 0.270,X16 of 0.239,X24 of 0.212,X17 of 0.172,and X27 of 0.104.
Risk Analysis of Time Delay in The Sumbawa Shrimp Pond Farming Project Muhamad Rizal; Novika Candra Fertilia
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Sekar Laut Group is opening a new land of around 1,000 hectares for shrimp ponds in the Sumbawa area, West Nusa Tenggara. The land in Sumbawa is suitable for shrimp farming because the water is considered cleaner and has no pollution. during the construction process, there were various kinds of obstacles that resulted in work delays of around 23% of the agreed schedule. Therefore, research is conducted to determine the dominant risk that affects the project's time performance and provide risk mitigation so that the risks that occur can be minimized. This research uses quantitative research methods by distributing questionnaires to related parties and testing the validity and reliability using SPSS version 25 software. The data processing method uses risk value data analysis to determine which risks are classified as high risk. The number of risks identified in this research were 35 risks consisting of 33 risks based on literature studies and 2 new findings risks. based on 35 risks distributed to respondents, there are 2 risks that are categorized as high risk. 1 (one) risk comes from a literature study is the subcontractor's poor performance, and 1 (one) other risk comes from the risk of new findings from expert advice is the large amount of repair work due to the earthquake.
Analysis of The Supporting Capacity of The Stake Foundation on Soekarno Hatta Airport Accessibility Project Resi Aseanto Aseanto; Muhammad Wira Kaloka
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

The construction of a foundation is very large function in a construction. In general the foundation is defined as an underground building that passes on the load derived from the weight of the building itself and the outer load that works on the building to the surrounding land. The foundation of the stake is a relatively long and slim rod that is used to channel the foundation load through the soil layer with a low support capacity of hard soil layer that has a high carrying capacity that is relatively deep compared to the shallow foundation. The carrying capacity of the stake is derived from the end bearing capacity obtained from the pressure of the end of the pole and the friction bearing capacity obtained from the carrying capacity of the friction or adhesion force between the stake and the surrounding soil. This research uses an analytical research method in which in the calculation of the planning of the foundation of the stake using the calculation of the capacity of carrying capacity with the method of bagemann and mayerhoff. From the calculation of vertical style carrying capacity based on sondir data using bagemann method at the first stake point of 1059.50 kN and at the second point of 1015.95 kN, and the result of SPT data using mayerhoff method at the first stake point of 663.88 kN and at the second point of 498.76 kN. Qultimate single pole horizontal carrying capacity calculation of 216 kN, Single Qizin amounted to 72 kN, Group of 228 kN.The result of the calculation of vertical carrying capacity of the group stake is 734.1732 kN.The result of the calculation of tuggal pole reduction is 11.62 mm, The stake group is 10.77 mm, so the calculation result for the drop of a single pole is smaller than the permit drop which is smaller than 100mm.
Comparison Analysis of Conventional Method Floor Slabs With Half Slab Method Against Cost and Time of XYZ Project Novika Candra Fertilia; Muhammad Fadhiil Dwi Sukmana
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Development in the infrastructure and construction sector in Indonesia has been growing from year to year both in terms of design and the system used. Some of these systems include conventional and precast (Half Slab) systems. Implementation of the conventional system is casting on site or it can be called Cast in situ, while the precast for the implementation of the production process is carried out in a special place, then taken to the project site (transportation) to be compiled into one intact structure. In the implementation of the conventional system there are several shortcomings, namely it takes a long time, is of poor quality and requires a lot of formwork and workers, resulting in a long implementation time. But behind these many shortcomings, of course, there are advantages, namely low implementation costs. In this research, the writer will compare the conventional floor slab system with the half slab floor plate on the bridge project as the object of this final project to compare the effect between the conventional system and the half slab on the project implementation cost requirements and the implementation period and the implementation method. The comparative analysis of the conventional method floor slab and the half slab method floor plate has obtained results. For the conventional method floor plate costs Rp. 2,353,749,140 with an implementation time of 67 days. While the half slab floor plate costs Rp. 2,598,711,750 with an implementation time of 49 days. So conventional floor plate work is cheaper by Rp. 244,962.
Concrete Durability by using Ground Granulated Blast Furnace Slag as A Cement Substitution Against Sulfuric Acid and Chloride Penetration Khoiru Mardiansyah; Agung Sumarno
Journal of World Conference (JWC) Vol. 3 No. 1 (2021): January 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

It seems that improvements in cement production technology couldn’t be expected to suppress carbon dioxide production significantly. Replacement of some parts of cement in the concrete manufacturing process, or in total replacing them with other more environmentally friendly materials becomes a more promising choice. Along with the increasing demand of concrete to serve the needs of construction in Indonesia is growing as well as innovations developed in the manufacture of concrete. One of them is the use of used materials or waste that can be utilized as add material or substitute cement as an alternative ingredient in concrete mixture. The purpose of this research is to find out the durability of concrete with substitution of Ground Granulated Blast Furnace Slag (GGBFS) against the penetration of sulfuric acid (H2SO4), the penetration of natrium chloride (NaCl) which also review the results of workability, change in density, into the penetration of sulfuric acid and compressive strength. The more the use of ground granulated blast furnace slag (GGBFS), the stronger it is to withstand the penetration of natrium chloride (NaCl). The average concrete density increased by 0.40%, the biggest change was at TM GGBFS 80% by 0.55%. With or without the use of ground granulated blast furnace slag (GGBFS) in the mixture of reinforced concrete acid sulfate (H2SO4) cannot enter into the concrete reviewed from the results of the titration Phenolphthalein is C20H14O4 (pH indicator) the entire concrete surface has been cut in magenta color (base or pH > 8.3). The use of ground granulated blast furnace slag (GGBFS) in the optimum concrete mixture is able to withstand the penetration of sulfuric acid (H2SO4) and the penetration of natrium chloride (NaCl) at the age of 14 days with the substitution of 80% GGBFS which is reviewed from the results of compressive strength concrete.
The impact of Covid-19 on areas prone to traffic accidents in Depok City : Margonda Raya Road case study Muhammad Isradi
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Traffic accidents and congestion is one of the main problems in Depok city. Jalan Margonda Raya is one of the streets in Depok city. Jalan Margonda Raya is one of the roads in Depok city with quite high traffic activity. To prove this, research is done by analyzing the area of accident prone and road performance with the aim of analyzing the areas prone to traffic accident and know the performance of mesh and how to correct alternative solution to overcome it. The method used in this research to analyse areas prone to accident is to use the AEK (equivalent number of accident) approach, and to know the area of traffic accident (black spot) with the method BKA (upper control limit), while to know the performance of the segment using Manual Road capacity 1997. Based on the results of analysis concluded that Jalan Margonda Raya, belongs to the category of road prone traffic accidents, because it has a value of AEK greater or greater than the value of BKA and UCL. Road with the highest AEK value is Jalan Margonda Raya with a value of AEK 40 where the value of BKA is only 24.250 and UCL value of 35.949. On the road, there have been 4 accidents with the total death toll of 1 person, 3 people with severe injuries, a light injury of 5 people, and a material loss of 5.3 million Rupiah. The most common type of accident is the front-back sprinrack of 45.45% of the total number of accidents. The most common time for accident at Jalan Margonda Raya Depok is at night at 18.00 WIB – 06.00 WIB with a percentage of 63.63% from the total accident. As for the level of service on Jalan Margonda Raya Sunday Direction Jakarta-Depok is B, this is due to the degree of saturation (V/C ratio) of 0.530, while the direction of Depok-Jakarta is B, this is because the degree of saturation (V/C ratio) of 0.540 and for the day, Monday 15 May 2020 direction Jakarta-Depok is B, this is because the degree of saturation (V/C ratio) of 0.669 while the direction of Depok-Jakarta is B, this is because the degree of saturation (V/C 0.608 From the analysis obtained some alternative solution that is to install and repaint road markers and Zebra Cross, repaint on sidewalks or kerb, and do periodic supervision work, check periodically on street lighting lamps.
Analysis of The Cost Comparison of Bridge Floor Plate Formr on Toll Road Project Jonathan Harris Sianipar; Novika Candra F; Anjas Handayani; Ali Sunandar
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

In this study, researchers wanted to discuss the installation of formisting to be installed on the floor plate structure between the girders inside the concrete bridge. In this case the authors want to know the comparison of cost analysis using conventional form form, bondek plate and deckslab. Because the Cost Budget Plan is very much related to the design and selection of materials to be used on girder bridge type I. In construction projects in Indonesia especially on the installation of formware residual material, the use of tools, the location of material procurement is very influential to the cost of construction work therefore it is necessary to be considered and taken into account carefully the selection of efficient formery so that the costs that will be incurred are not overbudget. In the research process this final task requires the foundations of the theory that support the problems that are reviewed. Through the study of literature is expected to be able to increase knowledge and study the basic theory used as a reference. At this stage the activity is a review of literature related to similar case studies from journals, literature books, and previous research reports. Cost analysis is reviewed in terms of services / labor namely, labor users for conventional systems and bondek in the same amount, while for deckslab precast less, but requires more precision. Cost analysis reviewed in terms of equipment, that is, for bondek system equipment does not require complicated equipment, unlike conventional ones that use scafolding aids as well as deckslab precast that use heavy equipment such as crawler cranes and hyab cranes. Price analysis in terms of materials namely, materials for conventional and bondek is very easy to obtain for the price depending on the area of the project location, for deckslab precast is required special supplier because the manufacture is directly from fabrication with a higher price when compared to conventional and bondek. Price analysis of each formisting system is, the installation of conventional formisting with a price of /m2 of Rp. 729,371. The total price of installing bondek form form with a price of /m2 is Rp. 367.593. Total installation price of deckslab precast form work with /m2 price of Rp. 803.795. From the results of the analysis, it can be concluded, that bondek form form form method is worth using for the toll bridge project because in terms of simpler methods and in terms of cost more efficient and effective.
Comparison of Erection Pierhead Segmental Method With Beam Lifter and Crawler Crane From of Time and Cost : JAPEK Elevated 2 Toll Project Erizal
Journal of World Conference (JWC) Vol. 3 No. 1 (2021): January 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Jalan Toll Jakarta - Cikampek Elevated 2 is an elevated toll road built to connect the JABODETABEK area and its surroundings. One of the important jobs in the construction of the JAPEK Elevated 2 toll road is the segmental pierhead erection. This final project aims to determine the comparison of the time and cost aspects of the segmental pierhead erection method using beam lifters and crawler cranes, as well as to determine what factors influence the segmental pierhead erection method. Primary and secondary data were collected, then a comparative analysis of time and costs was carried out on the beam liftter and crawler crane methods by calculating the cycle time and the performance index of the tools. Furthermore, researchers used quantitative research by distributing questionnaires to respondents, namely all employees involved in the segmental pierhead erection process in the JAPEK Elevated 2 Toll project. The results of this study indicate that the segmental pierhead erection method using a crawler crane is faster but slightly more expensive than beam lifters. Then it is known the results of the analysis using SPSS software from the beam lifter tool, there are 17 independent variables that correlate to the dependent variable and the percentage of influence of the two variables is 53.8%. Meanwhile, from the crawler crane, there are 26 independent variables which correlate with the dependent variable and the percentage of influence of the two variables is 55.5%.
Comparison Analysis of A Red Brick Wall With M-Cast Wall, Assessed from The Strength of Press, Time and Cost Catur Prayogo; Novika Candra Fertilia
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Currently there are several technologies and materials in the construction sector as substitutes for conventional building wall materials, including M-Cast and red brick. This study aims to determine the comparison of compressive strength, time and unit cost of wall work using M-Cast material and red brick based on conventional methods and SNI. Productivity data in this study were obtained by directly observing the speed of work in the field. The method used in this research is the Daily Record Sheet method and the SNI method. The job coefficient to calculate the work unit price analysis is obtained by calculating yourself based on the productivity value obtained.The results of the productivity analysis show that M-Cast has twice the strength compared to red brick, it can be seen from the final results of the compressive strength test at the age of the sample to 28 days where the red brick only has a strength of 53.92 - 58.50 Kg / cm² while M- Cast has a strength of 118.06 - 127.18 kg / cm², and the productivity value of M-Cast wall work in each type of observation is that the installation time required is 3 hours to install 1 piece of M-Cast with an area of ??-12m² where the time is 1 hour of installation and 2 hours of finishing Meanwhile, the red brick wall work time is 36 hours, where the installation time is 12 hours, plaster is 12 hours and finishing is 12 hours. The unit cost of the M-Cast wall works per 12m² is Rp. 7,690,000, and the red brick wall is Rp. 4,434,000.

Page 17 of 27 | Total Record : 265

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