scholarly journals STUDI EKSPERIMENTAL KERUNTUHAN RANGKA KUDA-KUDA BAJA RINGAN PADA ATAP RUMAH DAN SEKOLAH

2020 ◽  
Vol 25 (2) ◽  
pp. 126
Author(s):  
Adityo Budi Utomo ◽  
Iman Satyarno ◽  
Muslikh Muslikh
Keyword(s):  
Test Pattern ◽  
Full Scale ◽  
Working Time ◽  
Failure Pattern ◽  
Loading Test ◽  
Dead Weight ◽  
Maximum Capacity ◽  
Lightweight Steel ◽  
Steel Truss ◽  
Roof Truss

Increasingly expensive price of quality woods and difficulties of workmanship, it makes people switch from wood to lightweight steel as a roof truss. The use of lightweight steel as truss becomes popular because of the fast workmanship dan durability of the material. Many cases show that lightweight steel truss at school and house collapsed and caused a fatality. This lightweight steel truss study was carried out on a full scale with a span of 6 m and a slope of 300, while the loading test pattern at the placement points of battens was like truss in the community. The goals of this study to measure and observe several parameters including weight, maximum capacity, stiffness, ductility, price, length of work, and failure pattern. From testing, the result shows that lightweight steel truss has dead weight, maximum capacity, stiffness value, ductility value, price, working time, and failure pattern respectively of 21,3 kg,734 kg, 91,18 kg/mm, 2,97, Rp 1.740.000, 2 days, and failure pattern is buckling on the diagonal top chord. The result of this research indicates that lightweight steel truss can be used in the community with the limitation of using metal roof coverings instead of concrete or ceramic and the distance between the truss max 1,2 m.

scholarly journals A Full-Scale Experimental Study of the Vertical Dynamic and Static Behavior of the Pier-Cap-Pile System

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Jianlei Liu ◽  
Meng Ma ◽  
Flavio Stochino
Keyword(s):  
Experimental Study ◽  
Bearing Capacity ◽  
Dynamic Stiffness ◽  
Soil Layer ◽  
Low Frequency ◽  
Full Scale ◽  
Single Pile ◽  
Static Stiffness ◽  
Loading Test ◽  
Test Technique

The bearing capacity evaluation of bridge substructures is difficult as the static loading test (SLT) cannot be employed for the bridges in services. As a type of dynamic nondestructive test technique, the dynamic transient response method (TRM) could be employed to estimate the vertical bearing capacity when the relationship between static stiffness and dynamic stiffness is known. The TRM is usually employed to evaluate single piles. For the pier-cap-pile system, its applicability should be investigated. In the present study, a novel full-scale experimental study, including both TRM test and SLT, was performed on an abandoned bridge pier with grouped pile foundation. The test included three steps: firstly, testing the intact pier-cap-pile system; then, cutting off the pier and testing the cap-pile system; finally, cutting off the cap and testing the single pile. The TRM test was repeatedly performed in the above three steps, whereas the SLT was only performed on the cap-pile system. Based on the experimental results, the ratio of dynamic and static stiffness of the cap-pile system was obtained. The results show that (1) in the low-frequency range (between 10 and 30 Hz in this study), the dynamic stiffness of the whole system is approximately four times of that of a single pile; (2) the ratio of dynamic and static stiffness of the cap-pile system tested in the study is approximately 1.74, which was similar to other tested values of a single pile; (3) to evaluate the capacity of similar cap-pile system and with similar soil layer conditions by TRM, the value of Kd/Ks tested in the study can be used as a reference.

Dynamic loading test and simulation analysis of full-scale semi-active hydraulic damper for structural control

2000 ◽  
Vol 29 (6) ◽  
pp. 789-812 ◽  
Author(s):  
Naoki Niwa ◽  
Takuji Kobori ◽  
Motoichi Takahashi ◽  
Hiroshi Midorikawa ◽  
Narito Kurata ◽  
...  
Keyword(s):  
Dynamic Loading ◽  
Structural Control ◽  
Simulation Analysis ◽  
Full Scale ◽  
Loading Test ◽  
Hydraulic Damper

Recent Improvements in Load Capacity of Large-Steam-Turbine Thrust Bearings

1961 ◽  
Vol 83 (1) ◽  
pp. 130-134 ◽  
Author(s):  
H. C. Bahr
Keyword(s):  
Thermal Conductivity ◽  
Steam Turbine ◽  
Load Capacity ◽  
Full Scale ◽  
High Thermal Conductivity ◽  
Thermal Distortion ◽  
Maximum Capacity ◽  
Thrust Bearings ◽  
Apparent Reduction

The load capacity of tapered-land and pivoted-shoe thrust bearings has been increased significantly by the use of materials with high thermal conductivity and by modified shoe designs. Results of full-scale maximum-capacity tests at 3600 rpm and at 1800 rpm are presented. Improvements in bearing performance have been made possible by an apparent reduction in thermal distortion and bearing temperature.

A full-scale stability experiment on a diaphragm wall trench

2000 ◽  
Vol 37 (2) ◽  
pp. 379-392 ◽  
Author(s):  
Jiin-Song Tsai ◽  
Lee-Der Jou ◽  
Hsii-Sheng Hsieh
Keyword(s):  
Full Scale ◽  
Failure Pattern ◽  
Diaphragm Wall ◽  
Lateral Deformation ◽  
Sandy Ground ◽  
Stability Experiment ◽  
Scale Field ◽  
Slurry Trench ◽  
Scale Experiment ◽  
The Stability

This paper presents the results of a full-scale field experiment on the stability of a slurry-filled diaphragm wall trench. The objective of this experiment was to observe the failure pattern of a slurry-supported trench excavated in sandy ground. Ground responses, including settlement and lateral deformation of the surrounding ground adjacent to the experimental trench, were carefully monitored during the experiment. The stability of the trench was examined by lowering the slurry level in stages. The trench was deliberately failed. Field observations indicated that the experimental trench failed in 2 h in a progressive sliding pattern that resulted in a near-hemispherical cave-in of the adjacent ground. In this paper, a failure mechanism of the trench is proposed and an analytical method is adopted to back-analyze the stability of the trench. The stability of the trench and the failure pattern can be accurately analyzed using the method of Tsai and Chang.Key words: full-scale experiment, field test, slurry trench, stability analysis.

scholarly journals FULL SCALE LOADING TEST UP TO LARGE STORY DRIFT ON EXTERIOR WALL OF ALC PANEL WITH WINDOW AND DOOR ATTACHED TO STEEL MOMENT FRAME

2020 ◽  
Vol 26 (64) ◽  
pp. 869-874
Author(s):  
Shotaro YAGI ◽  
Tsuyoshi SEIKE ◽  
Satoshi YAMADA ◽  
Takanori ISHIDA ◽  
Shoichi KISHIKI ◽  
...  
Keyword(s):  
Full Scale ◽  
Exterior Wall ◽  
Moment Frame ◽  
Loading Test ◽  
Steel Moment Frame ◽  
Story Drift

scholarly journals Analisa Produktivitas Tenaga Kerja Pada Pekerjaaan Rangka Atap

2019 ◽  
Vol 5 (2) ◽  
pp. 20-27
Author(s):  
Mulyadi Mulyadi ◽  
Hasnawati Hasnawati ◽  
Muhammad Ridha
Keyword(s):  
Building Construction ◽  
Construction Work ◽  
Work Time ◽  
Lightweight Steel ◽  
Work Volume ◽  
Roof Truss ◽  
Implementation Time ◽  
Type C ◽  
Object Of Study ◽  
Steel Roof

Productivity is an important factor in determining the success of a construction work. Increased productivity will reduce work time, and that means it will reduce costs. In general, the value of productivity is determined by the factor of the volume of work, implementation time, and the number of workers. In order to get the job done well, a planning effort is needed by paying attention to these factors. For this reason, this study was conducted to determine the value of productivity in one component of building construction work, namely lightweight steel roof truss work. The object of study was the work of lightweight steel roof truss 4 (four) project sites, namely the 4 x 25 Shop Houses Construction Project in Meulaboh, West Aceh, the Building of the Rector & Administration Bureau Building of STKIP Bina Bangsa Getsempena Banda Aceh, the Construction of the Getsempena Lhoksukon North Aceh STIKES Building and the Construction of North Aceh RIKI STIKes Building, Bina Nusantara Idi, East Aceh. The roof truss material used is type C Truss 75 0.75 Thickness. The volume of roof truss work is planned to be 2022.38 m2. The study was conducted through field observations by directly recording the volume of work, the duration of each stage of work, and the number of workers involved. The results of the analysis show that the productivity value for roof truss works is obtained by an average of 2,062 m2 / hour or 16,499 m2 / day. In the implementation of roof truss work, the amount of labor used is the same in all segments, so the value of productivity tends to be determined by the magnitude of the ratio between the volume of work and the effective time of implementation. Thus, if the amount of work volume can be completed in a shorter time then the value of productivity will increase

scholarly journals Full-scale loading test on the reinforced embankments with geotextiles

1989 ◽  
Vol 4 ◽  
pp. 42-48
Author(s):  
Osamu Murata ◽  
Masaru Tateyama ◽  
Yukihiko Tamura ◽  
Kazuyuki Nakamura
Keyword(s):  
Full Scale ◽  
Loading Test ◽  
Reinforced Embankments
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