LENGKAP ‼️ Begini Tahapan Pekerjaan Bored Pile Dari Awal sampai Selesai

Summary

This video provides a comprehensive walkthrough of pile foundation work for large structures, from initial mobilization of heavy equipment to final load testing and concrete capping. It details each stage, including surveying foundation points, preboring, casing installation, deep drilling, cleaning the borehole, reinforcing steel placement, welding, tremie pipe concrete pouring, and quality control. The video also highlights important technical considerations, such as maintaining alignment, preventing soil collapse, and testing concrete strength. With practical demonstrations and clear explanations, it serves as a valuable guide for engineers, construction professionals, and enthusiasts looking to understand the step-by-step process of foundation construction.

Takeaways

• 😀 The video explains the full workflow of building a bored pile foundation from mobilization to concrete pile installation and testing.
• 😀 Mobilization of heavy equipment like Scania P380 and Hino 500 is typically done at night to avoid disrupting traffic in urban areas.
• 😀 Surveyors are responsible for marking precise foundation points according to design drawings to ensure accuracy.
• 😀 Initial drilling uses auger-type drill bits, with pre-boring adjusted based on soil type, sometimes using full stabilizers for sandy or loose soil.
• 😀 Casing installation is crucial to prevent soil collapse, maintain correct coordinates, and requires careful handling by experienced crane operators.
• 😀 After drilling, cleaning the borehole using specialized tools removes sediment and prepares it for reinforcement installation.
• 😀 Steel reinforcement installation must follow design specifications, including correct spacing and welding techniques to ensure structural integrity.
• 😀 Concrete pouring involves tremie pipes to separate concrete from water or slurry, with careful monitoring to prevent segregation and maintain quality.
• 😀 Concrete testing is conducted before and after pouring, with proper slump testing and strength verification at 28 days to ensure reliability.
• 😀 Load testing of the piles, using methods like driving analyzers or axle tests, confirms the structural capability before proceeding with superstructure work.
• 😀 The final stage includes cutting the pile head for structural connections, allowing smooth continuation to columns and other structural elements.
• 😀 Safety, precision, and adherence to design specifications are emphasized throughout all stages of bored pile construction.

Q & A

What is the main purpose of the video presented in the transcript?

The main purpose of the video is to explain the step-by-step process of pile foundation work, from mobilization of equipment to drilling, installation of reinforcement, concreting, and load testing of concrete piles.

What type of construction work does 'profiling work' refer to in this video?

Profiling work refers to in-situ concrete pile construction used for foundations of large structures like buildings and bridges. It involves drilling, installing reinforcement, and concreting on-site, as opposed to precast piles.

Why is mobilization of heavy equipment typically done at night?

Mobilization is done at night because the large dimensions of the equipment can disrupt traffic during the day. Nighttime is considered safer and less disruptive for transporting heavy machinery in urban areas.

What is the role of the surveyor in the pile foundation process?

Surveyors are responsible for marking foundation points accurately according to design drawings, checking the coordinates of installed casings, and ensuring the alignment and position of reinforcement and piles are correct.

What is the function of the casing used during drilling?

The casing protects the borehole from collapsing, ensures the soil remains stable, and helps maintain the correct alignment of the pile according to the design coordinates.

How is the drilling process carried out according to the video?

Drilling is done using an auger-type drill bit with pre-boring if necessary. The depth is determined by the design, and for unstable soils like sand, stabilizers are used to maintain hole integrity during drilling.

What are the key considerations during reinforcement installation?

Key considerations include verifying the quantity and spacing of rebar, using proper welding techniques for heavy bars, ensuring the bars do not contact soil, and checking that hangers maintain the correct position from top casing to the reinforcement.

Why is a tremie pipe used during concreting, and what is the ideal method?

A tremie pipe is used to separate water and sediment from the concrete, ensuring continuous placement. The ideal method includes using a sterofom at the pipe end to prevent segregation, calculating concrete volume, and maintaining continuous pouring to achieve high-quality concrete.

What type of testing is performed after the concrete pile is cast?

Load testing is performed using methods such as driving analyzer tests, Axel tests, and lateral or push tests to verify the pile's strength and suitability for structural loading.

What is the purpose of breaking the pile head (bobok beton) before starting superstructure work?

Breaking the pile head removes the top layer of concrete to expose the reinforcement, which allows proper connection to columns or beams in the superstructure, ensuring structural continuity.

What safety and quality measures are emphasized throughout the pile construction process?

The video emphasizes careful handling of heavy equipment, precise surveying, proper casing and stabilization, correct reinforcement placement, continuous and quality-controlled concreting, and comprehensive load testing to ensure safety and structural integrity.