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Every important page, organised so you can quickly find services, projects, and bored-pile information.
Main pages
Essential company and service information
Bored-pile services
View details for each service
- Dry-process bored pilesDry-process bored piles in 0.35, 0.40, 0.50, and 0.60 metre diameters.
- Complete material and labour serviceA complete bored-pile service covering materials, equipment, and labour.
- Seismic Integrity TestPile-integrity testing using stress-wave signals.
- Dynamic Load TestTesting used to analyse pile load-bearing capacity.
Work from real project sites
Bored-pile work at real locations
- Bored-pile work in a restricted-access siteA work-site video published on 8 July 2019 showing bored-pile operations at a difficult-access, restricted site.
- 35 cm bored piles in the Ratchada–Sutthisan areaA real dry-process 35 cm bored-pile work site in the Ratchada–Sutthisan area, documented in a Tawanchai Facebook post.
- Bored-pile work site during a Sao Ek–Sao Tho ceremonyA real work site combining a Sao Ek–Sao Tho ceremony with 35 cm dry-process bored-pile work, documented by Tawanchai.
- Grand Canal, PrachachuenBored-pile work at Grand Canal, Prachachuen.
- Phetkasem 124Bored-pile work at Phetkasem 124.
- Rungkarn 5A 96-pile project at Rungkarn 5.
- Rojana Bankhai, RayongA 31-pile project at Rojana Bankhai, Rayong.
- Nakhon In Road, Rama 5Bored-pile work on Nakhon In Road, Rama 5.
Articles and knowledge
Bored-pile basics, process, and testing
- 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.
- Dry-process bored pile installation steps using a tripod rigDetailed process of dry bored piling: setting tripod rig, casing installation, bucket auger boring, rebar cage placement, concrete pouring, and casing withdrawal.
- Key advantages of bored piles in modern constructionWhy bored piles are the top foundation choice for urban sites: low noise and vibration, protection of adjacent structures, and tight access suitability.
- Bored pile integrity and load capacity testing methodsStandard testing protocols for bored piles: Seismic Integrity Testing (ASTM D5882) and Dynamic Load Testing (ASTM D4945).
- Comparison: Dry process vs wet process bored pilesA comprehensive technical comparison between dry and wet process bored piles regarding depth, drilling slurry, equipment size, and cost.
- Bored piles vs Spun Micro Piles: Which foundation to choose?Compare key attributes between bored piles and spun micro piles regarding safe load capacity, equipment access, cost per pile, and suitability.
- Standard bored pile sizes (Dia 35, 40, 50, 60 cm) and safe load capacitiesStandard dry bored pile sizes in Thailand, typical safe working loads in Bangkok clay, rebar cage specifications, and concrete strength grades.
- Bored pile wall clearance distance and engineering tolerancesMinimum centerline clearance for bored piles near existing walls and standard engineering tolerances for horizontal positioning and verticality.
- Common bored pile flaws and site quality control remediesCauses and engineering prevention techniques for common bored pile flaws: borehole wall caving, necking, concrete voids, and offset.
- Site preparation checklist for bored pile constructionEssential site preparation steps before bored piling crew arrival: access roads for concrete trucks, survey marks, water, and power supply.
- Concrete mix design and slump control for bored pilesConcrete mix specifications, slump control (10-12 cm for dry process), and compressive strength (240-280 ksc) for self-compacting bored piles.
- Temporary vs permanent steel casing in bored pilingLearn the core differences, functions, and engineering applications of temporary and permanent steel casings in bored piling.
- Pile cap design and ground beam integration with bored pilesDetailed engineering guidelines on pile head chipping, pile cap concrete casting, and rebar dowel anchorage (40D-50D) into ground beams.
- Bangkok soil strata characteristics and bored pile depth selectionAnalysis of soft clay, stiff clay, and first sand strata across Greater Bangkok influencing dry bored pile design depth (18-21 meters).
- Bored pile rebar cage fabrication, splicing, and spacer placementEngineering specifications for rebar cage assembly, main bar lap splicing lengths, spiral tie pitch, and mortar spacer installation.
- Engineer checklist and quality control manual for bored pilingA 5-stage site inspection checklist for structural engineers and site supervisors monitoring bored pile operations.
- Bored piles vs driven precast concrete piles: Comprehensive comparisonDetailed technical evaluation comparing bored piles with driven precast piles regarding ground vibration, soil heave, noise, and cost.
- Preventing soil heave and impact vibration damage to existing foundationsUnderstanding ground heave hazards caused by soil displacement and how bored piles prevent foundation displacement in nearby buildings.
- Bored piles for factory, warehouse, and heavy machinery foundationsKey engineering factors when deploying bored piles for industrial plants, warehouses, heavy slab loads, and vibration-sensitive machinery pads.
- Bored piles for townhome rear extensions and house renovationsWhy dry bored piling is the gold standard for rear kitchen extensions and townhome renovations, preventing differential settlement wall cracks.
- Static Load Testing (Maintained Load Test) for bored pilesPrinciples and field procedures of static maintained load testing (ASTM D1143) for bored piles using hydraulic jacks and reaction frames.
- Tremie pipe concreting technique for bored pilesDetailed technical guide on tremie pipe concreting, preventing aggregate segregation and securing continuous concrete displacement.
- How to interpret soil boring logs for bored pile depth designA practical guide to reading Standard Penetration Test (SPT N-value) logs to determine pile founding levels and skin friction capacity.
- Bored pile structural defects and wave signal diagnosisAnalyzing stress wave signal reflections to diagnose bored pile structural defects including necking, bulging, voids, and shaft cracks.
- Engineering remedies for off-center and out-of-plumb bored pilesRemedial engineering design options when bored pile horizontal offsets exceed 5-7 cm or vertical inclination exceeds 1:100.
- Environmental standards and noise compliance for urban bored pilingEnvironmental regulations governing noise levels, vibration limits, and mud waste control during urban bored pile construction.
- Bored pile head chipping procedure and rebar dowel preparationTechnical procedures for chipping away weak top laitance concrete and exposing rebar dowels before casting footing concrete.
- Contiguous bored pile walls for deep basement excavationDeploying contiguous bored pile walls for deep basement excavations and earth retention in tight urban building sites.
- Bentonite and polymer slurry specifications for wet bored pilingDetailed specifications for bentonite and polymer drilling slurry density, Marsh funnel viscosity, pH, and sand content per API standards.
- Key factors influencing bored pile cost and budget estimationSummary of cost factors for dry bored piles: diameter selection, depth, site access constraints, and labour-only vs full turn-key contracts.
- Samut Prakan soil strata and bored pile depth guidelinesAnalysis of deep soft marine clay layers in Samut Prakan and engineering recommendations for 20-26m bored pile founding depths.
- Nonthaburi and Pathum Thani soil profiles for bored pilingEvaluating subsoil profiles across Nonthaburi and Pathum Thani to select safe bored pile lengths for residential developments.
- Bored piling in coastal soil environments: Samut Sakhon and ChonburiEngineering guidelines for coastal bored piling in Samut Sakhon and Chonburi using sulfate-resistant concrete and anti-corrosion protection.
- Bored piling in upcountry rock and gravel strataSpecialized drilling techniques using core barrels and rock augers when encountering gravel beds and weathered rock in upcountry Thailand.
- Groundwater level impact and mitigation in bored pilingUnderstanding high groundwater hydrostatic pressure impacts on borehole stability and prevention via deep casing seals.
- Soil cavities and loose ground solutions in bored pilingNavigating subterranean cavities and loose soil collapses using extended casing strings and cement grout stabilization.
- Soil boring test requirements and borehole spacing for buildingsEngineering Institute of Thailand (EIT) guidelines for soil boring test borehole count and spacing based on building footprint size.
- Negative skin friction (down-drag) in subsiding groundUnderstanding down-drag forces caused by subsiding upper clay layers pulling down on bored pile shafts and mitigation designs.
- Single pile vs pile group capacity and efficiency factorUnderstanding structural load distribution differences between single piles and pile groups, including group efficiency reduction factors.
- Bored pile center-to-center spacing rules and standardsStandard structural engineering rules requiring minimum center-to-center pile spacing of 2.5 to 3.0 times pile diameter.
- Lateral load and uplift resistance capacity of bored pilesBored pile behavior under wind shear, seismic loads, and uplift forces, highlighting rebar cage bending moment designs.
- Strap and cantilever footing design with boundary bored pilesUsing strap beams and cantilever footings with boundary bored piles to transfer eccentric wall loads inward safely.
- Preventing building differential settlement using bored pilesCauses of structural wall cracks from differential settlement and prevention using uniform bored pile tip founding levels.
- Function of spiral ties in bored pile shear resistanceThe structural role of continuous spiral ties resisting shear forces and preventing longitudinal bar buckling under heavy axial loads.
- Concrete cover thickness standards for underground bored pilesEIT standards mandating a minimum 5.0-7.5 cm concrete cover thickness shielding underground rebar cages from groundwater corrosion.
- Moment-resisting pile-to-cap connection engineeringDetailed design specifications for pile head embedment into footings (5-10 cm) and rebar dowel anchorage for moment transfer.
- In-depth tripod bored pile rig components and winch specsExplore the core components of dry tripod piling rigs: tripod A-frame legs, pneumatic air winches, drop hammers, and auger buckets.
- Bucket augers vs core barrel drilling tools in bored pilingComparing applications of standard soil bucket augers with core barrels designed for cutting through weathered rock and hard clay.
- Casing oscillators and hydraulic drivers in bored pilingOperation of hydraulic casing oscillators and drivers pushing deep casing strings straight through dense soil layers.
- Ready-mix concrete truck site management for continuous pouringSite logistics planning for ready-mix concrete truck deliveries ensuring continuous bored pile casting without cold joints.
- Mobile crane usage for long rebar cages and heavy casing handlingSafety standards for operating mobile cranes lifting heavy casing pipes and inserting long rebar cages without structural distortion.
- Air compressors and pneumatic tools in dry bored pilingRole of high-capacity diesel air compressors powering pneumatic winches and drilling tools on dry bored pile sites.
- Desander slurry treatment plants in wet bored pilingOperation of desander cyclone plants separating sand grains from bentonite slurry maintaining API density and viscosity specs.
- Temporary site power distribution and generator setupsPlanning temporary site power distribution, selecting diesel generators, and implementing ELCB breaker safety.
- Bored piles for commercial shophouses and urban streetfront buildingsWhy dry bored piles are ideal for 3-4 story commercial shophouses along streetfronts, shielding nearby shops from vibration.
- Bored piles for swimming pool, spa, and heavy water tank foundationsEngineering bored pile foundations supporting concrete swimming pools and water storage tanks, preventing structural leakage cracks.
- Bored piles for solar farm structures and electrical substationsDesigning bored pile foundations resisting wind uplift forces for ground-mounted solar panel arrays and heavy transformer pads.
- Bored piles for pedestrian bridges, billboards, and tower structuresDeploying Dia 50-60 cm bored piles for single-column structures facing high wind bending moments and overturning shear forces.
- Underpinning and structural foundation repair using bored pilesUnderpinning techniques using micro-bored piles and hydraulic jacks repairing settling house foundations safely.
- Bored piling operations on sloping ground and hillside sitesSafety protocols and stabilizing platform setup for operating tripod bored piling rigs on hillside slopes and embankments.
- Bored piles for high retaining fences and boundary wall structuresEngineering bored pile foundations for 3-4m high precast boundary walls and heavy earth-retaining fence footings.
- Bored piles for internal elevator pits and hoist shaftsDeploying dry bored piles inside existing building interiors to construct deep elevator pits and elevator shaft footings.
- Daily bored pile construction report and drilling log managementEssential components of daily bored piling logs tracking drilling depth, soil strata, concrete pour times, and slump records.
- Concrete test specimen sampling: Cube vs Cylinder strength standardsUnderstanding concrete compressive strength conversion ratios between 15x15 cm cubes and 15x30 cm cylinders per engineering codes.
- Crosshole Sonic Logging (CSL / ASTM D6760) deep pile integrity testingHigh-precision structural integrity testing for deep bored piles using ultrasonic wave transmission through embedded steel access tubes.
- Grouting repair methods for honeycombed bored pilesEngineering core drilling and non-shrink cement grouting procedures repairing honeycombed or soil-included bored pile shafts.
- Concrete bleed water and laitance layer management in bored pilingUnderstanding concrete bleeding and laitance accumulation at pile tops and over-pouring requirements for subsequent chipping.
- Health, safety, environment (HSE) standards and PPE in bored pilingSafety regulations governing tripod rig operations, borehole fall prevention, and mandatory PPE for bored piling crews.
- Navigating underground obstructions and old footings during bored pilingEngineering options when encountering old precast piles, concrete footings, or subterranean obstructions during borehole drilling.
- Settlement and heave monitoring pin installation around piling sitesInstalling structural settlement monitoring pins on adjacent buildings tracking baseline and post-construction ground movement.
- Concrete curing period before pile cap excavationMandatory concrete curing periods (3-7 days) required before heavy excavators dig around bored piles for pile cap construction.
- Thai Building Control Act regulations governing bored pile constructionKey Thai Building Control Act legal provisions, setback limits, and building permit requirements governing bored pile foundations.
- Pre-construction condition surveys of neighboring propertiesProcedures and risk mitigation benefits of conducting pre-construction surveys documenting existing cracks on adjacent buildings.
- Turnkey material-and-labour vs labour-only bored piling contractsComparing advantages of turnkey material-and-labour contracts against labour-only subcontracts for bored pile construction.
- Bored pile construction warranty terms and legal guaranteesUnderstanding bored pile structural warranty periods, quality guarantees, and legal liabilities under Thai Civil Code.
- Reading and preparing bored pile Bill of Quantities (BOQ)A guide to understanding bored pile BOQ items: cost per meter/pile, integrity testing fees, and equipment mobilization costs.
- Excavated soil waste management and site cleanliness standardsLogistics of excavated soil disposal, mud waste removal, and public road washing compliance during bored pile construction.
- Urban construction working hour regulations and noise ordinancesUrban municipal bylaws governing allowable bored piling site working hours (8:00 AM - 5:00 PM) to prevent community noise nuisance.
- Contractors all risks (CAR) and third-party liability insurance for pilingImportance of securing Contractors All Risks (CAR) and third-party liability insurance coverage for bored piling project sites.
- Checklist for selecting a reputable bored pile contractorA 6-point evaluation guide for choosing reliable bored pile contractors: experience, engineering support, quality rigs, and test guarantees.
- Ayutthaya soil strata and bored pile depth specificationsAnalysis of Ayutthaya river basin alluvial soil strata and engineering depth guidelines (18-24m) for stable bored pile foundations.
- Bored piling in Pathum Thani canal zones and subsidence mitigationEngineering bored pile guidelines for Pathum Thani canal districts (Khlong 1-15) mitigating soil caving and negative skin friction.
- Nonthaburi, Bang Bua Thong, and Bang Yai bored pile depth guidelinesBored pile depth specifications (16-20m) for residential houses across Nonthaburi, Bang Bua Thong, Bang Yai, and Pak Kret.
- Bored piling in Samut Prakan and Phra Pradaeng marine clayGeotechnical evaluation of soft marine clay across Pak Nam and Phra Pradaeng requiring 20-26m deep bored pile foundations.
- Samut Sakhon Tha Chin basin bored piling and sulfate protectionSulfate-resistant concrete mix designs for bored piling supporting seafood processing plants in Samut Sakhon.
- Samut Songkhram coastal clay bored piling and deep casing sealsDeep casing driving techniques penetrating Mae Klong estuary coastal soft mud in Samut Songkhram preventing bore collapses.
- Nakhon Pathom, Salaya, and Kamphaeng Saen soil profilesSubsoil evaluation across Nakhon Pathom, Salaya, and Nakhon Chai Si recommending 16-22m bored pile founding depths.
- Suphan Buri bored piling in alluvial soil and dense sand strataTha Chin river basin alluvial soil characteristics in Suphan Buri guiding 15-20m bored pile depth designs.
- Ang Thong, Sing Buri, and Chai Nat bored pile foundationsBored piling standards for upper Chao Phraya basin districts across Ang Thong, Sing Buri, and Chai Nat.
- Lop Buri and Sara Buri bored piling in limestone and weathered rockSpecialized bored drilling techniques when encountering limestone and gravel beds across Sara Buri and Lop Buri.
- Nakhon Nayok bored piling in acidic soil and flood-prone terrainAcidic soil and flood-prone area bored pile engineering specs in Nakhon Nayok ensuring concrete durability.
- Chachoengsao Bang Pakong basin bored pilingBang Pakong river basin subsoil analysis across Chachoengsao and Ban Pho guiding 18-24m pile depths.
- Chonburi, Pattaya, and Sriracha bored piling in coastal rock strataBored piling technical specifications across Chonburi, Pattaya, Sriracha, and Amata City cutting through weathered granite.
- Rayong and Map Ta Phut industrial bored piling for heavy machineryIndustrial bored piling specs in Map Ta Phut and Eastern Seaboard Rayong supporting heavy chemical plant machinery.
- Chanthaburi and Trat bored piling in high rainfall coastal environmentsBorehole stability control in high rainfall and shallow water table conditions across Chanthaburi and Trat.
- Prachinburi and Kabin Buri industrial estate bored pilingTechnical bored pile engineering specifications for industrial factories in Prachinburi, Kabin Buri, and Si Maha Phot.
- Sa Kaeo and Aranyaprathet border trade facility bored pilingBored pile foundations supporting border trade logistics warehouses and customs facilities in Sa Kaeo and Aranyaprathet.
- Chiang Mai intermontane basin and Ping river gravel bed bored pilingBored pile drilling techniques penetrating dense Ping river gravel beds across Chiang Mai, Hang Dong, Mae Rim, and Saraphi.
- Chiang Rai earthquake-resistant bored pile engineeringRebar cage confinement and seismic shear reinforcement specifications for bored piles in earthquake-prone Chiang Rai.
- Lampang and Lamphun industrial estate bored piling in gravelly soilBored pile foundation specs for Northern Region Industrial Estate factories in Lamphun and Lampang.
- Phrae and Nan river valley and sloping terrain bored pilingYom and Nan river valley subsoil profiles guiding bored pile installation across Phrae and Nan.
- Phitsanulok, Sukhothai, Phichit, and Kamphaeng Phet bored pilingLower Northern plain alluvial subsoil evaluation for bored piling across Phitsanulok, Sukhothai, Phichit, and Kamphaeng Phet.
- Phetchabun, Tak, Uttaradit, Mae Hong Son, and Phayao bored pilingMountainous terrain and weathered rock bored piling guidelines across Phetchabun, Tak, Uttaradit, Mae Hong Son, and Phayao.
- Nakhon Ratchasima (Korat) bored piling in silty sand and weathered sandstoneKorat plateau subsoil specifications for bored piles across Nakhon Ratchasima, Pak Chong, and Phimai penetrating sandstone.
- Khon Kaen metropolitan bored piling for commercial high-risesHigh-rise commercial bored pile engineering standards in Khon Kaen founding on Khorat formation sandstone and siltstone.
- Udon Thani, Nong Khai, Nong Bua Lamphu, and Bueng Kan bored pilingMekong river basin subsoil characteristics guiding bored pile designs across Udon Thani, Nong Khai, Nong Bua Lamphu, and Bueng Kan.
- Ubon Ratchathani, Warin Chamrap, Sisaket, and Yasothon bored pilingMun river basin alluvial subsoil evaluation for bored piles across Ubon Ratchathani, Warin Chamrap, Sisaket, and Yasothon.
- Buriram, Surin, and Chaiyaphum bored piling in basalt and gravelly soilBored pile core barrel drilling techniques penetrating extinct volcanic basalt rock strata in Buriram, Surin, and Chaiyaphum.
- Roi Et, Mahasarakham, and Kalasin bored pilingSubsoil evaluation over the Maha Sarakham rock salt formation guiding bored piles in Roi Et, Mahasarakham, and Kalasin.
- Sakon Nakhon, Nakhon Phanom, Mukdahan, Loei, and Amnat Charoen bored pilingCommercial bored piling standards across Sakon Nakhon, Nakhon Phanom, Mukdahan, Loei, and Amnat Charoen.
- Kanchanaburi and Ratchaburi bored piling in limestone and karst terrainBored piling engineering guidelines navigating subterranean limestone cavities and karst formations in Kanchanaburi and Ratchaburi.
- Phetchaburi, Prachuap Khiri Khan, Cha-am, and Hua Hin coastal bored pilingBeachfront resort and villa bored pile engineering specs across Cha-am, Hua Hin, Phetchaburi, and Prachuap Khiri Khan.
- Phuket, Phang Nga, and Krabi island resort bored piling in granitic bedrockSpecialized granitic bedrock core barrel drilling for luxury island hotels and pool villas in Phuket, Phang Nga, and Krabi.
- Surat Thani and Koh Samui bored piling in tidal coastal zonesBored pile engineering specs for Koh Samui, Koh Phangan, and Surat Thani resisting marine wave action and sea salt.
- Nakhon Si Thammarat, Trang, Phatthalung, Chumphon, and Ranong bored pilingSouthern peninsula Gulf and Andaman coastal subsoil evaluation across Nakhon Si Thammarat, Trang, Phatthalung, Chumphon, and Ranong.
- Songkhla and Hat Yai bored piling in deep dense sand strataCommercial building bored pile foundation engineering standards in Hat Yai and Songkhla founding on dense sand strata.
- Satun, Pattani, Yala, and Narathiwat bored pilingDeep Southern border province subsoil profiles guiding bored pile construction across Satun, Pattani, Yala, and Narathiwat.
- What is a Bored Pile? The Ultimate Guide for Homeowners and ContractorsWhat is a bored pile? How does it differ from driven piles? Read our complete guide covering types, installation processes, pros and cons, pricing, and quality testing.
- Bored Pile vs Driven Pile: Which is the Best Choice for Your Home?A clear comparison between bored piles and driven piles. Which one suits your project? Deep dive into pros, cons, costs, vibration, and workspace requirements to help you make the right choice.