Dry-process bored piles
Dry-process bored piles in 0.35, 0.40, 0.50, and 0.60 metre diameters.
- Tripod rig
- Temporary casing
Dry-process bored-pile contractor
TAWANCHAI KHEMJOH COMPANY LIMITED
Dry-process bored piles in 0.35, 0.40, 0.50, and 0.60 metre diameters, backed by more than 20 years of experience, skilled crews, and engineering support.
Send the diameter, quantity, length, and location for a preliminary quotation
FIELD / 01Real work. Dry process. Tripod rigs.
20+ yearsBored-pile experience
Ø 0.35–0.60 mBored-pile diameters
From 1 pileProjects welcomed
ENGINEERING CALCULATOR
Bored Pile Material & Safe Load Estimator
Calculate concrete volume, steel cage weight, safe load capacity, and budget instantly.
100% Free Engineering Tool
Bored Pile Material & Load Capacity Estimator
Select pile diameter, depth, and quantity to calculate concrete, steel, safe load capacity, and get an instant quote via LINE.
20 meters
10m20m32m
10 piles
1 ต้น50 ต้น150 ต้น
Total Concrete Volume (+5% margin)20.3 m³
Est. Steel Cage Weight1,523 kg
Safe Load Capacity per Pile~39 Tons / pile
Estimated Budget Range143,000 - 173,000 THB
This is a preliminary budget estimate only — not a final quote. Contact us for an official quotation after site inspection.
Send Specs to Get LINE Quote* Calculations are preliminary engineering estimates. Tawanchai engineers inspect site conditions before issuing final quotes.
Our services
Why customers choose Tawanchai
We provide complete bored-pile work, pile testing, and advice on the dry-process bored-pile method.
Complete material and labour service
A complete bored-pile service covering materials, equipment, and labour.
- Projects from one pile upwards
- Quality materials and equipment
Seismic Integrity Test
Pile-integrity testing using stress-wave signals.
- Hand-held hammer
- Accelerometer transducer
Dynamic Load Test
Testing used to analyse pile load-bearing capacity.
- Strain gauges
- Accelerometer
30-SECOND DECISION WIZARD
Smart Bored Pile Selection Wizard
Answer 3 quick questions to receive personalized pile diameter and depth recommendations.
30-Second Smart Wizard
Find the Ideal Bored Pile Specs for Your Building
Engineering RecommendationSend Specs to LINE for Quote
Recommended Pile DiameterØ 35 - 50 cm
Recommended Depth Range18 - 24 เมตร
Vibration & Neighbor Risk Level🟢 100% Safe, Zero-vibration, Quiet Operation
GEOTECHNICAL DATABASE
77 Province Soil Engineering Guide
Check estimated hard soil layer depth and recommended casing length for your area.
77 Province Soil Engineering Guide
Check Recommended Pile Specs & Soil Depths for Your Zone
Est. Hard Soil Layer Depth20 - 24 เมตร
Recommended Casing Length12 - 15 เมตร (ป้องกันดินเหนียวอ่อนทรุด)
Popular Pile Diameters in AreaØ 35 - 60 ซม. (ตามน้ำหนักอาคาร)
💡 Geotechnical Engineering Tip:
Soft clay layer is approximately 12-14m thick. Deep casing is recommended to prevent hole collapse and water seepage.
Standard Engineering Workflow
Dry-Process Bored Pile Step-by-Step Execution
STEP 01
1. Survey & Casing Installation
Survey coordinates precisely per structural plan. Drive temporary steel casing into soil to prevent wall collapse and water infiltration.
EQUIPMENT CLEARANCE
Tripod Rig & Site Access Specifications
Minimum headroom, entrance width, and machinery weight specs for project engineers.
Equipment & Clearance Spec Sheet
Tripod Rig & Site Access Specifications for Engineers
Min. Headroom Required:3.00 - 3.50 เมตร
Min. Entrance Width:1.50 เมตร (เข้าซอยแคบ/ประตูบ้านได้สบาย)
Rig Weight & Mobility:ประมาณ 3 - 4 ตัน (แยกถอดชิ้นส่วนย้ายง่าย)
Est. Production Rate:2 - 4 ต้น / วัน / ชุด
⚙️ Standard Tripod Drilling Rig
Perfect for urban homes, narrow alleys, and restricted spaces with zero vibration.
FIELD COMPARISON
Real Site Before & After Interactive Comparison
Compare site conditions before access vs during dry-process tripod rig drilling.
During Dry-Process Tripod Drilling
Before (Tight Access / Boundary Wall)- 01
Set the tripod rig
Position the tripod rig at the centre of the pile
- 02
Drive temporary casing
Connect the casing sections and control pile alignment
- 03
Excavate the bore
Use the bucket to remove soil to the required level
- 04
Install reinforcement
Lower and centre the reinforcement cage in the bore
- 05
Place concrete
Place concrete while withdrawing the casing in stages
Bored-pile projects
Work from Tawanchai's real project sites
Soi Phrom Sut Anuson, Ratchada–Sutthisan
35 cm bored piles in the Ratchada–Sutthisan area
View case study
Articles
Information about bored piles
What is a bored pile and how does it work?
A cast-in-place concrete pile formed by excavating a borehole, installing a steel reinforcement cage, and placing concrete with minimal vibration.
Read article
Dry-process bored pile installation steps using a tripod rig
Detailed process of dry bored piling: setting tripod rig, casing installation, bucket auger boring, rebar cage placement, concrete pouring, and casing withdrawal.
Read article
Key advantages of bored piles in modern construction
Why bored piles are the top foundation choice for urban sites: low noise and vibration, protection of adjacent structures, and tight access suitability.
Read article