Osterberg Load Cell Test Results on Base Grouted Bored Piles in Bangladesh

2004 ◽  
Author(s):  
Raymond J. Castelli ◽  
Ed Wilkins
Keyword(s):  
Load Cell ◽  
Test Results ◽  
Cell Test ◽  
Bored Piles

scholarly journals Design of Prototype System for Temperature and Humidity Control in Flour Storage

2017 ◽  
Vol 5 (2) ◽  
pp. 59-64
Author(s):  
Annisau Saidah
Keyword(s):  
Wheat Flour ◽  
Load Cell ◽  
Sensor Data ◽  
Prototype System ◽  
Mold Growth ◽  
Test Results ◽  
Linear Formula ◽  
Temperature And Humidity ◽  
Cell Test ◽  
First In First Out

Storage of wheat flour requires good temperature and humidity to avoid mold growth that can damage the nutrients in wheat flour. The temperatures and humidity required for proper storage are above temperatures and humidity below 60% RH. The method used in flour storage is FIFO (First In First Out) using a Load cell sensor as a marker for flour input. The incoming flour will input the time, location and amount of flour, so that it can be easily determined which flour will come out first. To facilitate monitoring of temperature, humidity and stock amount in flour storage in this study, sending monitoring data wirelessly using an internet network that can be accessed anywhere. The test results of this study show that the DHT22 sensor can measure temperature and humidity well, which has a RE (Relative Error) value of 0.5% temperature and 3.9% humidity compared to the HTC-1 measuring instrument. The load cell test compared to digital scales has an accurate value using a linear formula. In the QoS test, sending sensor data to the web server has a good value according to the ITU-T standard, namely delay <150ms

scholarly journals IoT system terpadu untuk pengelolaan sarang lebah

JURNAL ELTEK ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 9
Author(s):  
Vivien Arief Wardhany ◽  
Vivien Arief Wardhany ◽  
Alfin Hidayat
Keyword(s):  
Honey Bees ◽  
Nutritional Value ◽  
Social Insect ◽  
Human Life ◽  
Web Server ◽  
Load Cell ◽  
Integrated System ◽  
Graphical Form ◽  
Test Results ◽  
Android Application

Lebah madu adalah jenis serangga social yang hidup berkoloni. Lebah memiliki manfaat bagi kehidupan manusia yaitu dalam proses penyerbukan tanaman serta menghasilkan madu yang dapat dikonsumsi karena memilki nilai gizi yang tinggi. Pada sistem peternakan lebah modern ada beberapa hal yang perlu diperhatikan yaitu iklim, lokasi sarang lebah dengan ketersediaan tanaman (bunga) yang menjadi sumber makan bagi lebah dan material sarang lebah. Pada penelitian ini telah dibuat suatu sistem terpadu yang terdiri dari 3 bagian penyusun sistem yaitu hardware yang terdiri dari sensor suhu, kelembaban, load cell dan geo lokasi (penentu lokasi) berikutnya adalah software yang terdiri dari Web Server dan aplikasi Android yang berisi data hasil pembacaan sensor yang disajikan dalam bentuk grafik sehingga memudahkan pembacaan hasil monitoring dari hardware, serta notifikasi apabila tiba saat pemanenan sarang atau kondisi suhu dan kelembaban yang tidak sesuai dengan standar tidak terpenuhi. Hasil pengujian sistem ini didapatkan bahwa Suhu optimal pada kandang lebah dapat dipertahankan dengan aktuator. Aktuator dapat mepertahankan suhu dari 34,4 ℃ ke 32,9℃ selama 1 menit 5 detik dan dari 31,2 ℃ ke 32,2 ℃ selama 1 menit 15 detik. Aplikasi web dan android ini mempermudah para peternak lebah untuk mengelola kondisi sarang lebah dari hasil pengujian untuk monitoring kondisi sarang lebah dapat berjalan dengan baik, dimana data yang ditampilkan adalah suhu, kelembaban dan berat. Honey bees are a type of social insect that live in colonies. Bees have benefits for human life, namely in the process of pollinating plants and producing honey that can be consumed because of their high nutritional value. In the modern beekeeping sistem, there are several things that need to be considered, namely the climate, the location of the beehive and the availability of plants (flowers) which are a source of food for bees and beehive materials. In this research, an integrated system consisting of 3 parts of the system has been created, namely Hardware consisting of temperature, humidity, load cell and geo location sensors. Next is the software consisting of a Web Server and an Android application that contains reading data. sensors are presented in graphical form to facilitate reading of monitoring results from Hardware, as well as notifications when nest harvesting arrives or temperature and humidity conditions that do not comply with standards are not met. The test results of this system show that the optimal temperature in the beehive can be maintained with an actuator. The actuator can maintain temperature from 34.4 ℃ to 32.9 ℃ for 1 minute 5 seconds and from 31.2 ℃ to 32.2 ℃ for 1 minute 15 seconds. This Web and Android application makes it easier for beekeepers to manage the conditions of the beehive. From the test results for monitoring the conditions of the beehive, it can run well, where the data displayed is temperature, humidity and weight.  

scholarly journals ANALYSIS OF THE FIELD TESTS RESULTS OF BORED CONICAL PILES UNDER THE ACTION OF VARIOUS TYPES OF LOADS

2018 ◽  
Vol 3 (3) ◽  
pp. 24-29
Author(s):  
Ирина Рыбникова ◽  
Irina Rybnikova ◽  
Александр Рыбников ◽  
Aleksandr Rybnikov
Keyword(s):  
Bearing Capacity ◽  
Load Capacity ◽  
Normal Component ◽  
Cone Angle ◽  
Field Tests ◽  
Side Surface ◽  
Test Results ◽  
Head Diameter ◽  
Cylindrical Piles ◽  
Bored Piles

One of the methods of improving the bearing capacity of bored piles is giving them a taper. The feature of these (wedge-type) piles is that under load they work "as a thrust" and transfer part of the load due to the normal component to the inclined side surface. Three sizes of tapered bored piles were tested, with the length of 4.5 m, head diameter 0.4; 0.5; 0.6 m and with cone angle 1o and 2,5o. The test results were compared with the test results of cylindrical piles, 4.5 m long, with head diameter 0.4 m and 0.6 m. It has been discovered that with the increasing cone angle, the bearing capacity of piles against the pressing load, especially the specific load capacity for 1 m3 of material, as compared to cylindrical piles, increases significantly. It has been determined that the larger is the diameter of the head of the pile, the higher is the bearing capacity against the horizontal load, and the bearing capacity against the pullout load is equal to the breakout force of a pile from the soil.

scholarly journals Static and Dynamic Load Tests of Shaft and Base Grouted Concrete Piles

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Jialin Zhou ◽  
Xin Zhang ◽  
Hongsheng Jiang ◽  
Chunhao Lyu ◽  
Erwin Oh
Keyword(s):  
Dynamic Load ◽  
Static Load ◽  
Test Results ◽  
Pile Capacity ◽  
Friction Resistance ◽  
Concrete Piles ◽  
Double Tangent ◽  
Load Tests ◽  
Bored Piles ◽  
Comparison Of The Results

This paper examines shaft and base grouted concrete piles by conducting vertical static load tests (SLTs) and dynamic load tests. Three concrete piles with shaft and base grouting, with base grouting only, and without grouting techniques were selected, and compressive SLTs were conducted. Two piles with grouting were also assessed with dynamic load tests. Another two uplift SLTs were conducted to one shaft and base grouted pile and one pile without grouting. Traditional presentations were provided to check whether the bored piles reached the design requirement. Interpretations of test results were also provided to determine the ultimate pile capacity. Results from these 5 SLT programs indicated that double-tangent and DeBeer's methods are close to each other, and Chin's method overestimates the pile capacity. Comparison of the results from the SLTs and dynamic load tests shows that the results from Chin's method are close to dynamic results, and Mazurkiewicz's method overestimates for friction resistance. The results also demonstrate that base and shaft grouted pile and base grouted pile increase by 9.82% and 2.89% in compressive capacity, respectively, and compared to the uplift SLTs; there is a 15.7% increment in pile capacity after using base and shaft grouting technology.

Model Test Studies of the Vertical Bearing Behavior of Bored Piles with Breakage Defects

2012 ◽  
Vol 256-259 ◽  
pp. 65-70
Author(s):  
Cheng Hua Wang ◽  
Juan Su ◽  
Gan Wang
Keyword(s):  
Bearing Capacity ◽  
Model Test ◽  
Great Influence ◽  
Test Results ◽  
Sudden Drop ◽  
Bored Piles ◽  
Vertical Bearing ◽  
Vertical Bearing Capacity ◽  
Bearing Behavior

In order to study the vertical bearing behavior of bored piles with breakage defects, a series of methods for simulation of normal piles and broken piles in laboratory was developed and used to investigate the vertical bearing behavior of these piles. The load-settlement curves of normal piles and broken piles were measured and analyzed. The tests revealed that the upper part of a broken pile works alone as a short pile before it contact with the lower part of the pile at the end of the first sudden drop stage.The analysis of the test results showed that the position of the breakage defect has a great influence on the lost in vertical bearing capacity of the pile.

The tensile capacity of bored piles in frictional soils

2008 ◽  
Vol 45 (12) ◽  
pp. 1715-1722 ◽  
Author(s):  
Sven Krabbenhoft ◽  
Allan Andersen ◽  
Lars Damkilde
Keyword(s):  
Free Fall ◽  
Groundwater Table ◽  
Test Results ◽  
Design Practice ◽  
Current Design ◽  
Bored Piles ◽  
Load Displacement ◽  
Frictional Soils

Three series of 10 piles each were installed in two different locations. The lengths of the piles varied from 2 to 6 m and the diameters were 14 and 25 cm. The piles were constructed above the groundwater table using continuous flight augers and the concrete was placed by gravity free fall. The piles were tested to failure in axial uplift and the load–displacement relations were recorded. The results from the tests have been compared with theoretical values based on current design practice and the method proposed by Fleming et al. seems to produce the best match with the test results.

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