scholarly journals Effects of Half-Precast Concrete Slab System on Construction Productivity

2017 ◽  
Vol 9 (7) ◽  
pp. 1268 ◽  
Author(s):  
Kyuman Cho ◽  
Young-su Shin ◽  
Taehoon Kim
Keyword(s):  
Concrete Slab ◽  
Precast Concrete ◽  
Construction Productivity

scholarly journals IDENTIFIKASI FAKTOR PENGARUH DOMINAN KETERLAMBATAN PROYEK AKIBAT RANTAI PASOK PADA PENGADAAN PELAT BETON PRACETAK

2020 ◽  
Vol 3 (4) ◽  
pp. 1295
Author(s):  
Firena Bian Saputri ◽  
Basuki Anondho
Keyword(s):  
Supply Chain ◽  
Human Error ◽  
Concrete Slab ◽  
Precast Concrete ◽  
Influence Factors ◽  
Concrete Slabs ◽  
Literature Study ◽  
Factors Affecting ◽  
Project Duration ◽  
Speed Up

One way that can be done to speed up the duration of the project is to use precast concrete slabs. However, the use of precast concrete slab elements in the project can be ineffective if in the order stage, production stage, until the delivery stage of precast concrete elements to the project site is not managed properly, which can cause delays in project duration. Therefore, the use of precast concrete slabs is very dependent on the supply chain management. To anticipate this risk, it is necessary to identify what are the dominant factors in the supply chain that affect the procurement of precast concrete slabs which can cause delays in project duration. The initial influence factors were collected through a literature study and interviews with a number of practitioners, followed by a survey using a questionnaire to a number of project actors in projects using precast concrete slabs. The Likert scale 1-5 is used to measure the level of influence of a factor identified on project delays. By using factor analysis techniques, as many as three groups of dominant supply chain factors affecting the procurement of precast concrete slabs were found, namely special factors, technical factors, and human error factors.ABSTRAKSalah satu cara yang dapat dilakukan demi mempercepat durasi proyek adalah menggunakan pelat beton pracetak. Namun, penggunaan elemen pelat beton pracetak di proyek bisa tidak efektif apabila dalam tahap pemesanan, tahap produksi, hingga tahap pengiriman elemen beton pracetak ke lokasi proyek tidak dikelola dengan baik, sehingga dapat menyebabkan keterlambatan durasi proyek. Oleh sebab itu, penggunaan pelat beton pracetak sangat bergantung pada manajemen rantai pasokannya. Untuk mengantisipasi risiko tersebut, perlu adanya identifikasi mengenai faktor dominan apa saja pada rantai pasok yang mempengaruhi pengadaan pelat beton pracetak yang dapat menyebabkan keterlambatan durasi proyek. Faktor pengaruh awal dikumpulkan melalui studi literatur dan wawancara kepada sejumlah praktisi, dilanjutkan dengan survei menggunakan kuesioner kepada sejumlah pelaku proyek di proyek yang menggunakan pelat beton pracetak. Skala Likert 1-5 digunakan untuk mengukur tingkat pengaruh suatu faktor yang diidentifikasi terhadap keterlambatan proyek. Dengan menggunakan teknik analisis faktor, sebanyak tiga kelompok faktor dominan rantai pasok yang berpengaruh pada proses pengadaan pelat beton pracetak ditemukan, yaitu faktor khusus, faktor teknis, dan faktor human error.

scholarly journals Recent Half-Precast Concrete Slab Construction

1995 ◽  
Vol 33 (8) ◽  
pp. 5-15
Author(s):  
Hiroshi Imai
Keyword(s):  
Concrete Slab ◽  
Precast Concrete

scholarly journals STUDI KOMPARASI ANTARA PRACETAK MASIF DAN FLY SLAB STUDI KASUS: STRUKTUR GEDUNG RUSUNAWA SURAKARTA

2018 ◽  
Vol 6 (2) ◽  
pp. 71-80
Author(s):  
Redaksi Tim Jurnal
Keyword(s):  
Comparative Study ◽  
Technological Development ◽  
Concrete Slab ◽  
Precast Concrete ◽  
Reduction Reaction ◽  
Structural Elements ◽  
Conventional Concrete ◽  
Style Transfer ◽  
Central Java ◽  
Concrete Plate

Fly slab is one of the precast concrete slab technological development that has been researched and patented by Ir . Sulistyana in 2011. The concept is how to reduce the mass of precast concrete slab with makes ribs on the concrete slab. To minimize the volume of concrete plate and while maintaining tensile area to makes the style transfer mechanism of concrete to reinforcement or otherwise, are expected to reduce the mass of the structure without reducing strength. Comparative study will be conducted in this research based on Planning of Building Construction Rusunawa in Surakarta, Central Java. This comparative study is done by compare the results of the structural design Rusunawa existing Surakarta and ready to build using conventional precast concrete massive, with a new structure plan Rusunawa Surakarta with using fly slab as material plate, beam and column structural elements using conventional concrete. Based on the analysis results, showed reduction in the volume of concrete and reinforcement elements beam and coloumn Rusunawa Surakarta structure is 20,25% and 6,3 %. Reduction reaction in the vertical structure of the Rusunawa Building in Surakarta is 16,93%.

scholarly journals Execution of High-rised Building using Thin Precast Concrete Slab Form Shaped Contrary T with Prestressing Force

1995 ◽  
Vol 33 (2) ◽  
pp. 29-37
Author(s):  
T. Mizoguchi ◽  
A. Tomita ◽  
A. Konishi ◽  
K. Okamoto
Keyword(s):  
Concrete Slab ◽  
Precast Concrete ◽  
Prestressing Force

scholarly journals Experimental Study on an Optimized-Section Precast Slab with Structural Aesthetics

2018 ◽  
Vol 8 (8) ◽  
pp. 1234 ◽  
Author(s):  
Hyunjin Ju ◽  
Sun-Jin Han ◽  
Il Choi ◽  
Seokdong Choi ◽  
Min-Kook Park ◽  
...  
Keyword(s):  
Cross Section ◽  
Concrete Slab ◽  
Precast Concrete ◽  
Variable Cross Section ◽  
Structural Performance ◽  
Variable Cross ◽  
Safe Side ◽  
Current Design ◽  
Shear Reinforcements ◽  
Construction Loads

The optimized-section precast slab with structural aesthetics (OPS) is a half precast concrete slab with multi-ribs that optimizes the cross-section by eliminating the unnecessary bottom flanges at mid-span and has good structural performance by utilizing prestressing strands and truss-type shear reinforcements. In addition, it is a member that is designed to highlight the structural aesthetics through the curved shape of a variable cross-section at the bottom of the flange which is created from a natural shape that is formed in the section optimization process. In this study, experimental research was carried out to examine the structural performance of the OPS, which includes flexure and shear tests on the precast concrete unit members for resisting construction loads, the composite members with cast-in-place concrete, and the continuous end section. The experiment results confirm that, in accordance with the current design code, the flexural performance of OPS is on the safe side regardless of the member type, whereas the shear performance of the precast concrete unit member differs slightly from that of the composite member due to the differences in the contributions of the shear reinforcement as the effective depth varies.

Flexural Behaviour of Reinforced Slab Panel System with Embedded Cold-formed Steel Frames as Reinforcement

2015 ◽  
Vol 74 (4) ◽  
Author(s):  
Cher Siang Tan ◽  
Yee Ling Lee ◽  
Shahrin Mohammad ◽  
Siong Kang Lim ◽  
Yeong Huei Lee ◽  
...  
Keyword(s):  
Concrete Slab ◽  
Load Capacity ◽  
Precast Concrete ◽  
Steel Frames ◽  
Control Sample ◽  
Steel Frame ◽  
Ultimate Load Capacity ◽  
Hollow Section ◽  
Average Value ◽  
Cold Formed Steel

This paper presents the experimental investigation on flexural characteristic of slab panels with embedded cold-formed steel frame as reinforcement. Perforated cold-formed steel channel sections are formed into steel frames as replacement to the conventional reinforcement bars inside precast concrete slab panels. A series of six experimental specimens for precast slab panels were tested. The specimens with 3 configurations namely control sample (CS) with conventional reinforcement bars, single horizontal C-channel section (SH) and double horizontal C-channel sections (DH) formed into rectangular hollow section. Results show that the tested slab specimens failed at the flexural crack at mid-span, under loading point and shear at the support. Tearing of shear connector in the cold-formed steel section was found to be the main factor for the structural failure. SH specimens achieved the highest ultimate load capacity, with average value of 138.5 kN, followed by DH specimens, 116.5 kN, and the control samples, 59.0 kN. The results showed that the proposed reinforced slab panel with embedded cold-formed steel frame was more effective compared to conventional reinforced slab.

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