IJTI International Journal of Transportation and Infrastructure eISSN 2597-4769 pISSN 2597-4734

Soil Improvement Using the Stone Column Method at the International Port of Tibar, Timor-Leste

Raimundo Gomes — 2022-09-30

Stone column (stone column) is one of the soil improvement methods that fall into the category of "reinforcement" or soil strengthening which uses aggregate in the form of gravel or crushed stone to make columns with a certain diameter and depth in the soil layer with the aim of increasing the carrying capacity of the soil and reducing settlement. . The stone column method is intended to detail the soil improvement work in this project both on land and at sea. The stone column method has been used to improve weak soils since the 1950s. The rigid granular elements of the stone column increase the stiffness and shear resistance of the weak soil and the permeable nature of the column accelerates consolidation settlement so that residual settlement can be limited to a tolerable value. Various design methods have been used to design stone columns over the years ranging from simple hand calculations to complex and highly complex numerical models. Important considerations include the type of structure to be supported, in-situ soil properties of stone column material parameters, area replacement ratio, stress concentration and consolidation time. Like other geotechnical methods, the stone column method requires stability checks and workability checks. Not only the stone column method but there are several design methods that will be discussed in this journal paper and will highlight some of the advantages and disadvantages of each approach. Importantly, all soil improvement methods, whether simple or complex, must be verified by post-treatment testing with field measurements.

Study of Behavioral of Vertical Irregular Building Structure by Applying Column Variation Due to Earthquake using Dynamic Analysis

Pawening Esti Pramundi — 2022-09-30

The development of high-rise buildings in Indonesia is now increasingly diverse. The need for increasingly narrow land functions affects the shape of the building which tends to be irregular. Irregularity in the building requires structural planners to build buildings that are safe against earthquakes but also do not forget the aspect of user comfort. In this study, an analysis of the dynamics of earthquakes was carried out in buildings that have vertical geometric irregularities by varying the dimensions and reinforcement of the columns. The behavior of the building structure produces structural responses in the form of base shear, fundamental period, displacement and story drift. Analysis of earthquake using dynamic analysis of response spectrum based on SNI 1726 2019 with the help of ETABS software version 9.7.4. The results of this research indicate that the variation of column dimensions and column reinforcement in buildings with irregular vertical geometry reduces the stiffness of the building thereby reducing the forces in the structure, increasing the fundamental period, reducing the base shear force, increasing the displacement and the story drift.

Analysis and design of precast cast-in situ concrete composite

Ercia Emanuela da Costa — 2022-09-30

The quay is a building structure made at sea to connect the land and harbor parts that function as a place for docking or mooring ships that will carry out loading and unloading activities of loading and unloading passengers. The wharf at the Tibar port is operated for loading/unloading general cargo containers. The dimensions of the floor plate for the wharf are 75cm, T4 transverse beams 6,900 x 1,500 x 1,500 m, longitudinal beams 5,400 x 1,750 x 1,500 m, pile cap 1.69 m² and pile foundation length The pile for the diameter of 1.5 m is 80 m, the Pile of 1.8 m is 81 m. The wharf has a length of 630 m, a width of 62 m and a depth of 16 m and the structure type of this pier is reinforced concrete and steel piles.

The Foundations in Construction, a General and Comprehensive Study from an Engineering and Historical Perspective

Arfat Hussein Mohammed Baker — 2022-09-30

The bottom base of the structure is the very uppermost part because it connects the superstructure of the body to the ground. This bottom base is known as the foundation. In this paper we will discuss and analyze the types of foundations used in the construction industry, there is a design and also in alternative materials that we can use as foundation materials in construction that can make it more solid, durable and environmentally friendly. It is critical to build a stable base that maintains the superstructure in all climatic conditions without collapsing or deteriorating the concrete structure. If any unsuitable material is used for the foundation of the structure, the high risk is the collapse of the structure. Different types of foundation base are used in different types of structural structures, each with a unique design and specific configuration that makes a particular structure more durable and stable. A different type of foundation is used in cottages and high-rise buildings. This study presents the use of foundations for the superstructure, and appropriate design, and we will discuss more precisely about how to make the foundation foundation environmentally friendly, cost-effective for the structural building, and make it more durable and strong to withstand natural and environmental disasters.

Analysis of Health and Safety Risk Management (OHS)

Alfian Krisdarmanto — 2022-09-30

This study intends to identify OHS risks in the workforce, control risks, and assess risks that occur in construction projects. This implementation was carried out in the KPP Sidoarjo State House Rehabilitation project. This data collection uses the interview method and filling out questionnaires directly to the workforce as many as 15 respondents who then arrange the risk potential variables based on each job so that 37 potential risk variables are produced. In the conclusion, there are results of the risk level assessment based on the AS/NZS 4360 standard, there are 20 variables that are categorized as medium level and 17 variables that are categorized as low level. exposed to noise when using a grinding machine when cutting ceramics (ceramic installation process), while for the lowest value of 1.47 which is included in the low level, the workers' eyes are exposed to paint splashes (painting process).

Identifying Accident Severity Factor On Surabaya Secondary Arterial Roads

Ahmad Utanaka — 2022-09-30

One of the CBD (Central Business District) areas of Surabaya is located at the center of the city, which is also known as the CBD Tunjungan area. CBD Tunjungan area is a hub for trade and services and has important accessibility which is surrounded by secondary arterial roads. Some secondary arterial roads which have access and high mobility to the CBD Tunjungan Area are Darmo Raya Road, Urip Sumoharjo Road and Basuki Rahmat Road. The high activity and mobility in the CBD area cause several transportation problems, one example is traffic accidents. The traffic accident data by the Directorate of Traffic and City Resort Police of Surabaya show that there are quite a several traffic accidents on these two roads. Traffic accidents are divided into three levels of severity i.e. slight, serious, and fatal injuries. To obtain the probability model of traffic accidents within every accident severity, it is necessary to do an analysis using the multinomial logistic regression method. The independent variables such as vehicle speed, lane width, accident time, and accident type, are considered to affect the equation model. Thus, it can be discovered the variables that affect the probability at the three levels of traffic accident severity.

Comparison Analysis of Cost and Time Forming Conventional Method With Semi-System Method for Column Namira Hotel Surabaya

Algerian Kusuma — 2022-09-30

In the implementation of project activities, careful steps are needed and the determination of the right implementation method to obtain cost and time efficiency. In general, there are 3 types of formwork, namely conventional formwork, semi-system formwork, and system formwork. The difference between the three types can be seen from the material used. This study aims to determine the comparison of formwork in terms of method, cost and time in the construction of the Namira Hotel project located on Jl. Pagesangan Surabaya which consists of 9 floors. The cost of formwork is usually between 35% to 60% or more of the total construction cost. Material requirements are usually referred to as the calculation of the volume of work. The volume of a formwork work depends on the planned area. The duration needed to complete a job is influenced by the worker. So in order to determine the success of a project, the factors that must be considered are in terms of labor productivity and the number of workers. In the construction of Hotel Namira Surabaya, the cost of conventional column formwork was IDR 376,052,918.80 and for semi-column formwork it was IDR 214.624.700,00 where the duration of semi-system formwork was faster than conventional formwork.