scholarly journals Kajian Kriteria Perencanaan Dan Metode Pelaksanaan Struktur Reservoir

2018 ◽  
pp. 62-71
Author(s):  
Johannes TARIGAN ◽  
Simon Dertha Tarigan ◽  
Ernie Shinta Yosephine Sitanggang ◽  
Philip Amsal Aprianto Ginting
Keyword(s):  
Reinforced Concrete ◽  
Clean Water ◽  
Functional Abilities ◽  
Water Capacity ◽  
Steel Tank ◽  
Reservoir Construction

Reservoir is a building used as a place to hold clean water before being distributed. Artificial resevoir can be a steel tank or reinforced concrete tub. For reservoir that is planned to accommodate large amounts of water capacity, it is usually more effective to use reinforced concrete. Evaluation and analysis of reservoir construction is one of the important aspects to ensure that the reservoir design meets the requirements of strength and stability, as well as functional abilities. The problem that often occurs in reservoir buildings is the occurrence of uncontrolled uplift which results upward movement in the construction of the reservoir, and also the reservoir building often decreases differently due to improper foundation systems. This different decline resulted in cracks on the floor of the reservoir building which in turn will cause damage and malfunction of the reservoir construction. This paper contains a study of planning evaluation and analysis, and the method of implementation of severalconstructions of reservoir structures that have been carried out. The results of this study are expected to provide input and help planners and contractors to build reinforced concrete reservoirs that comply with the correct planning criteria, so that the building can function properly as planned.

scholarly journals Leakproofness of the reinforced concrete tank for water with a capacity of 45000 m3

2019 ◽  
Vol 284 ◽  
pp. 06006
Author(s):  
Y. Minch Maciej ◽  
Andrzej Kmita
Keyword(s):  
Reinforced Concrete ◽  
Technical Condition ◽  
Clean Water ◽  
Water Tank ◽  
Reinforced Concrete Structure ◽  
Expansion Joints ◽  
Total Capacity ◽  
Concrete Tank ◽  
Financial Losses ◽  
Level Analysis

The clean water tank discussed consists of four reinforced concrete tanks. The structure is symmetrical for each of the tank pairs, which consist of two storage tanks and two water transfer tanks for the water supply network. All chambers are technologically connected with each other. The tanks are partially recessed in the ground, monolithic, and completely roofed. The projection of chambers within external walls is 96 x 96 m = 9,216 m2. The total capacity of internal chambers and external chambers is about 45,000 m3. The clean water tank was made as a reinforced concrete structure, monolithic. The owner of the facility observed significant losses of stored water, which translated into large financial losses of the company. In order to determine the current technical condition of the reservoir and the causes of its leakage, a comprehensive, multi-level analysis was carried out in terms of strength, stability and durability of the structure. A few dozens of samples were taken at random, and the compressive strength of the concrete, modulus of longitudinal deformation and degree of carbonatization were evaluated. For the assessment of the technical condition of the expansion joints, boreholes were also drilled through them. On the basis of the results obtained from the tests, numerical analysis of the stress on the structure and its deformations was performed in order to select the most stressed areas as well as to assess expansion deformations as potential spots of the largest leaks. The results of the analysis were used to prepare the concept of sealing repairs of the tank chambers.

Alpha correction factors for static aerators and fine bubble diffusers used in municipal facultative aerated lagoons

1998 ◽  
Vol 38 (3) ◽  
pp. 79-85 ◽  
Author(s):  
C. Asselin ◽  
Y. Comeau ◽  
Q. A. Ton-That
Keyword(s):  
Mass Transfer ◽  
Correction Factor ◽  
Process Water ◽  
Oxygen Mass Transfer ◽  
Clean Water ◽  
Correction Factors ◽  
Mixed Liquor ◽  
Fine Bubble ◽  
Steel Tank ◽  
Bubble Diffusers

The alpha correction factor (KLa process water/KLa clean water; where KLa is the volumetric oxygen mass transfer coefficient) was evaluated for 4 kinds of static aerators and 2 kinds of fine bubble diffusers used in municipal facultative aerated lagoons. For this purpose, a 40 m3 steel tank was filled (3.1 m side water depth) with clean or process water. The process water consisted of “mixed liquor” from a municipal facultative aerated lagoon divided into a cascade of four identical basins that were 3.5 m deep. Results showed that in the last three basins, the alpha correction factors were relatively high, being between 0.85 to 0.95 for any type of aeration device. In the first lagoon, however, the alpha correction factors were between 0.70 and 0.90 for static aerators and about 0.70 for fine bubble diffusers. Furthermore, at the inlet of the first basin, the alpha factor was as low as 0.59 for a static aerator and 0.26 for a fine bubble diffuser, due to the composition of the “mixed liquor”. It was shown that the alpha correction factor that should be used for the design of aeration systems for facultative aerated lagoons should be lower in the first basin of a series of basins and could be higher than 0.85 for the downstream basins.

scholarly journals ANALISA KEBUTUHAN AIR BERSIH PADA DI KOTA BINJAI SUMATERA UTARA

2020 ◽  
Vol 1 (1) ◽  
pp. 123-141
Author(s):  
Salomo Simanjuntak ◽  
Eben Oktavianus Zai ◽  
Parto Oktavianus Sihombing
Keyword(s):  
Total Population ◽  
Human Life ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Clean Water ◽  
Dense Population ◽  
Domestic Water ◽  
Water Capacity ◽  
Human Need ◽  
The City

Human life is very dependent on the fact of good quality air which is called clean water. Clean water is one type of water-based resource that is of good quality and is commonly used by humans for consumption or in carrying out their daily activities including sanitation. The most important thing is clean water is a basic human need that affects human health. Binjai City is a city with a dense population of 283,362 people in 2020, including a small city with a usage of 100 liters / person / day. This requires an analysis of the need for clean water that can be used effectively, efficiently and sustainably. This analysis will require data: the total population obtained from the Central Bureau of Statistics and the existing clean water capacity will be obtained from PDAM Tirtasari as well as literature studies or direct links to related parties regarding the existence of clean water in the city of Binjai. The need for clean water is divided into domestic water needs and non-domestic water needs in which there are social, commercial, industrial, and government agency needs. This need will be projected until 2025 so that Binjai city needs to build a new water treatment plant.

Testing steel-tank rectifiers

1934 ◽  
Vol 5 (18) ◽  
pp. 51
Author(s):  
H. Leonard Euler
Keyword(s):  
Steel Tank
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