Self Drilling Anchor (SDA)/Hollow Bar Micropiling




We are also offering micropiling works, as below


Micropiling / Underpinning

The principles for the application and execution of the micropiling foundations are specified in micropile standard BS EN 14199 defining the execution of micropiling works. A micropile is small diameter pile which is used in various applications with Ground engineering. Generally, pile foundations serves to transfer structural loads to the underlying formations of construction ground and/or to limit deformations according to the principles of the execution of geotechnical and civil works.  The micropile may thereby only be subjected to axial tensile, compressive or alternating loads. Self-drilling anchor (SDA)/ Hollow Bar micropiles are featured products for micropiling and preferred method of installation in these applications is simultaneous drilling and grouting.
Micropiles are devided in two groups regarding the load bearing type:

  1. End Bearing Piles:
In this type the micropile is installed into the bed rock/hard stratum and most of bearing capacity is from the base. This type of micropiles are used when the bed rock or a hard stratum is available in shallow depths
  1. Skin Friction Piles:
Where there is no dense underlying stratum available in shallow depths, the skin friction ones is often used and the bearing capacity depends on the frictions forces that are mobilised along the length of the pile.



Soil Nailing / Slope Stabilization
Soil/Rock Nailing is a construction method used to maintain or enhance the stability of the soil or rock mass by installing reinforcing elements (nails) in accordance to the principles for the execution of the geotechnical works. Nailing (sometimes combined with other elements like shotcrete, drainage system, Retaining walls, etc.) forms a retaining structure of reinforced Soil/Rock mass which nails are predominantly subjected to tensile stress. In addition, they might be also subjected to bending the shear stresses.
The area of applications for the above nail types in accordance with BS EN 14490 are:
  • Slope stabilization for vertical and inclined use
  • Underground primary support for tunnel construction, radial ground reinforcement and face stabilization.



Tunnelling


Self-drilling anchor (SDA)/ Hollow Bar micropiles are part of the excavation process and serve as primary soil/rock support for:
  • Radial consolidation of the tunnel circumference supports the rock, forming a load bearing ring thus enabling the rock supporting itself (together with shotcrete and other facing elements).
  • Umbrellas and Fore piling as pre-support in poor rock formation, shallow overburden and critical stress conditions.
  • Face stabilisation to sustain rock pressure for excavation with large cross sections.
  • Root piles to divert stress.
The conventional method of installation involves drilling the Self-drilling anchor (SDA)/ Hollow Bar micropiles with water flush to the design layout and depth and in a second phase, independent of drilling, a grout adapter is added and a dense cement based grout mix is injected through the hollow core to exit through the flush holes at the drill bit filling the borehole until the grout mix appears at the borehole mouth, once cured, enabling the transfer of stress from the rock/soil formation.

Our Services
We offer a broad range of foundation related services, including geotechnical design, foundation project planning, professional engineering services, basement construction, jet grouting and more, based on our years of experience.


Slope Stabilization with Self Drilling Anchor (SDA)/ Hollow Bar Micropiles
1. Soil Nailing

Construction proceeds from the top to bottom, and head plates are installed on each nail.  Shotcrete or concrete is typically applied on the excavation face to provide continuity when a soil nail wall is constructed.

2. Retaining Wall Structures by Self Drilling Anchor (SDA)/ Hollow Bar Drilling

Ground anchors are used to secure retaining walls during excavation works to prevent the wall from moving.  Ground anchor is usually designed to prevent deformation of the ground or retained structure. 

3. Embarkment Stabilisation by Self Drilling Anchor (SDA)/ Holow Bar Drilling 

Embankment stabilization is to stabilize an unstable or inadequately stable slope.  The purpose of slope stabilization techniques is to increase the Factor of Safety of a slope to a level that is considered adequate.

Foundation with Self-drilling Anchor (SDA)/Holow Bar Micropiles
1. Micropiling/Underpinning

A Micropiling is a small diameter pile which is used in various applications within Ground engineering.   Underpinning is the method of strengthening the foundation of an existing building or other structure in confined or low-overhead spaces, difficult to access jobsites, basements and small tunnels.

2. Micropiling for Tensioned Foundations       

Self-drilling Anchor (SDA) / Hollow bar drilling tensioned piles, also known as uplift piles or anchor piles, are a type of pile foundation that is used to resist uplift forces that might otherwise cause it to be extracted from the ground.

3. Micropiling to Prevent Buoyancy        

Self Drilling Anchor (SDA) / Hollow bar Micropiling to prevent buoyancy is constructed to resist the uplift forces can be called as Tension piles.  Uplift forces can develop because of hydrostatic pressure, seismic activity or overturning moments.

Tunnelling with Self-drilling Anchor (SDA)  
1. Radial Systematic Anchoring by Self-drilling Anchor (SDA)/Hollow Bar Drilling

Radial consolidation of the tunnel circumference supports the rock, forming a load bearing ring thus enable the rock supporting itself together with shotcrete and Self-drilling Anchor (SDA)/Hollow Bar Micropiles.

2. Stabilization of Tunnel Portals

Self-drilling Anchor (SDA)/Hollow Bar Micropiling is a ground stabilisation technique that can be used on Tunnel Portals either natural or excavated slopes. It involves drilling holes, grouting, and anchoring in a single operation.

3. 
Face-Stabilization

Self-drilling Anchor (SDA)/Hollow Bar micropiles was introduced for temporary tunnel surface stabilization and long- term reinforcement around the excavation surface area.






Disclaimer

Location: Kuala Lumpur: Bukit Bintang, Titiwangsa, Setiawangsa, Wangsa Maju, Batu, Kepong, Segambut, Lembah Pantai, Bandar Tun Razak, Cheras, Ampang, Batu Caves, Damansara, Sentul, Sungai Besi Selangor: Gombak, Hulu Langat, Hulu Selangor, Klang, Kuala Langat, Kuala Selangor, Petaling, Sabak Bernam, Sepang, Shah Alam, Ampang Jaya, Kajang, Bangi, Kota Damansara, Petaling Jaya, Putrajaya, Cyberjaya, Bandar Saujana Putra, Selayang, Subang Jaya, Puchong, Kota Damansara, Sungai Long, Gombak District • Hulu Langat District • Hulu Selangor District • Klang District • Kuala Langat District • Kuala Selangor District • Petaling District • Sabak Bernam District • Sepang District • Petaling Jaya • Shah Alam • Ampang • Assam Jawa • Bagan Lalang • Balakong • Bangi • Banting • Batang Kali • Batu Arang • Batu Caves • Beranang • Bestari Jaya • Broga • Bukit Lanjan • Bukit Raja • Bukit Rotan • Bukit Tagar • Cheras • Cyberjaya • Damansara • Dengkil • Ijok • Jenjarom • Jeram • Jugra • Kajang • Kalumpang • Kapar • Kerling • Klang • Kuala Kubu Bharu • Kuala Selangor • Kuala Sungai Buloh • Kuang • Kundang • Lagong • Meru • Morib • Padang Jawa • Pandamaran • Paya Jaras • Port Klang • Puchong • Rasa • Rawang • Sabak • Salak Tinggi • Sekinchan • Selayang • Semenyih • Sepang • Serendah • Seri Kembangan • Sijangkang • Subang • Sungai Ayer Tawar • Sungai Besar • Sungai Buaya • Sungai Buloh • Sungai Choh • Sungai Pelek • Sungai Pelong • Tanjung Harapan • Tanjung Karang • Tanjung Sepat • Teluk Datok • Teluk Gong • Teluk Panglima Garang • Ulu Klang • Ulu Yam • Alam Budiman • Alam Impian • Ara Damansara • Bandar Baru Bangi • Bandar Baru Klang • Bandar Baru Selayang • Botanic • Bukit Tinggi • Country Homes • Kinrara • Mahkota Cheras • Saujana Putra • Seri Putra • Sri Damansara • Bandar Sultan Suleiman • Sungai Buaya • Sungai Long • Sunway • Tasik Puteri • Bandar Tun Hussein Onn • Bandar Utama • Bernam Jaya • Bukit Antarabangsa • Bukit Beruntung • Bukit Jelutong • Bukit Rahman Putra • Bukit Rimau • Bukit Subang • Country Heights • Damansara Jaya • Damansara Perdana • Damansara Utama • Denai Alam • Eco Grandeur • Elmina • Glenmarie Cove • Hillpark • i-City • Jade Hills • Kelana Jaya • KLIA Charter Field Town • Kota Kemuning • Kota Puteri • Lembah Beringin • Lembah Jaya • Mutiara Damansara • Pandan Indah • Pandan Jaya • Puncak Alam • Puncak Perdana • Putra Heights • Saujana Impian • Setia Alam • Southville City • Subang Jaya • Berkeley • Taman Cuepacs • Greenwood • Hillview • Keramat • Melawati • Putra Perdana • Sri Andalas • Sri Muda • Taman Tun Teja • TTDI Jaya • UEP Subang Jaya • Valencia • Bagan Nakhoda Omar • Dusun Tua • FELDA Soeharto • Kampung Bukit Lanchong • Kampung Desa Serdang • Kampung Kuantan • Kampung Lombong • Kampung Sungai Haji Dorani • Kampung Sungai Kayu Ara • Kampung Sungai Pusu • Kuala Kubu Bharu (Ampang Pechah) • Kundang • Pulau Meranti • Tanjung Dua Belas • Carey Island • Pulau Indah • Pulau Ketam • Klang Island • Pulau Jemor • Pulau Angsa • MSC Malaysia • Klang Valley Perak: Bagan Datuk, Batang Padang, Hilir Perak, Hulu Perak, Kampar, Kerian, Kinta, Kuala Kangsar, Larut, Matang, Selama, Manjung, Mualim, Perak Tengah, Ipoh, Batu Gajah, Taiping Pahang: Bentong District, Bera District, Cameron Highlands District, Jerantut District, Kuantan District, Lipis District, Maran District, Pekan District, Raub District, Rompin District, Temerloh District, Bandar Bera, Bandar Muadzam Shah, Bandar Tun Abdul Razak, Bandar Tun Razak, Batu Hitam, Batu Talam, Belimbing, Benta, Bentong, Beserah, Brinchang, Bukit Ibam, Bukit Tinggi, Ceruk Paluh, Chendor, Chenor, Cheroh, Fraser's Hill, Gambang, Gebeng, Genting Highlands, Genting Sempah, Jerantut, Karak, Kemayan, Kerdau, Ketari, Kota Iskandar, Kota Shahbandar, Kuala Lipis, Kuala Pahang, Kuala Rompin, Kuala Tahan, Kuala Tembeling, Lanchang, Lentang, Lubuk Paku, Lurah Bilut, Maran, Mengkarak, Mengkuang, Mentakab, Merapoh, Nenasi, Paloh Hinai, Panching, Pekan, Penor, Raub, Sebertak, Sempalit, Sungai Lembing, Sungai Ruan, Tanah Rata, Tanjung Lumpur, Tanjung Sepat, Teluk Cempedak, Temerloh, Teriang, Tringkap Melaka: Alor Gajah Asahan Ayer Keroh Bemban Durian Tunggal Jasin Kem Trendak Kuala Sungai Baru Lubok China Masjid Tanah Melaka Melaka Merlimau Selandar Sungai Rambai Sungai Udang Tanjong Kling Terengganu: Besut District • Dungun District • Hulu Terengganu District • Kemaman District • Kuala Nerus District • Kuala Terengganu District • Marang District • Setiu District • Ajil • Bandar Al-Muktafi Billah Shah • Bandar Ketengah Jaya • Bandar Permaisuri • Bandar Seri Bandi • Batu Rakit • Bukit Besi • Bukit Payong • Chukai • Jabur • Jerangau • Jerteh • Kampung Raja • Kemasik • Kedai Buluh • Kerteh • Kijal • Kuala Besut • Kuala Berang • Kuala Dungun • Kuala Jeneris • Kuala Telemung • Marang • Merchang • Paka • Pasir Raja • Rantau Abang • Rasau Kerteh • Teluk Kalung • Wakaf Tapai • Alam Serada • Rantau Petronas • Jenagur • Kampung Tok Imam Lapar • Padang Midin • Rusila • Seberang Takir • Sekayu • Sungai Bari • Wakaf Mempelam • Bidong • Kapas • Lang Tengah • Perhentian • Redang • Tenggol • Wan Man Kelantan: Bachok District • Gua Musang District o Lojing Autonomous Sub-District • Jeli District • Kota Bharu District • Kuala Krai District • Machang District • Pasir Mas District • Pasir Puteh District • Tanah Merah District • Tumpat District • Bachok • Bukit Bunga • Bunut Payong • Dabong • Gua Musang • Jelawat • Jeli • Ketereh • Kota Bharu • Kuala Krai • Kubang Kerian • Lojing • Machang • Manek Urai • Pasir Mas • Pasir Puteh • Pengkalan Chepa • Pengkalan Kubor • Pengkalan Pasir • Perupok • Rantau Panjang • Salor • Tanah Merah • Temangan • Tok Bali • Tumpat • Wakaf Bharu • Wakaf Che Yeh • Bandar Utama Gua Musang • Bandar Baru Tunjong • Bandar Chintawangsa • Bandar Pasir Puteh Sentral • Bandar Saujana Harmoni • Bandar Satelit Islam Pasir Tumboh • Bandar Tasek Raja Negeri Sembilan: Jelebu • Jempol • Johol • Rembau • Sungai Ujong • Tampin • Jelebu District • Jempol District • Kuala Pilah District • Port Dickson District • Rembau District • Seremban District • Tampin District • Ayer Kuning • Air Kuning Selatan • Ampangan • Bahau • Bandar Seri Jempol • Batang Benar • Batu Kikir • Chembong • Chengkau • Dangi • Gemas • Gemencheh • Johol • Juasseh • Kota • Kuala Klawang • Kuala Pilah • Labu • Lenggeng • Linggi • Lukut • Mantin • Mambau • Nilai • Pajam • Paroi • Pantai • Pasir Panjang • Pedas • Pengkalan Kempas • Pertang • Port Dickson • Rantau • Rasah • Rembau • Rompin • Senawang • Sepang Road • Seremban 2 • Seremban 3 • Seri Menanti • Serting • Sikamat • Siliau • Simpang Durian • Simpang Pertang • Sungai Gadut • Sungai Muntoh • Tampin • Tanjung Ipoh • Teluk Kemang • Tiroi • Bandar Ainsdale • Bandar Baru Nilai • Bandar Enstek • Bandar Springhill • Bandar Sri Sendayan • Rasah Jaya • Seremban Forest Heights • Taman Seremban Jaya • Taman Tuanku Jaafar FELDA L.B. Johnson • Bukit Pelanduk Johor: Ayer Baloi, Ayer Hitam, Ayer Tawar, Bandar Penawar, Bandar Tenggara Batu Anam Batu Pahat Bekok Benut Bukit Gambir Bukit Pasir Chaah Endau Gelang Patah Gerisek Gugusan Taib Andak Jementah Johor Bahru Kahang Kluang Kota Tinggi Kukup Kulai Labis Layang-Layang Masai Mersing Mersing Muar Nusajaya Pagoh Paloh Panchor Parit Jawa Parit Raja Parit Sulong Pasir Gudang Pekan Nenas Pengerang Pontian Pulau Satu Rengam Rengit Segamat Semerah Senai Senggarang Seri Gading Seri Medan Simpang Rengam Sungai Mati Tangkak Ulu Tiram Yong Peng Perlis: Arau Kaki Bukit Kangar Kuala Perlis Padang Besar Simpang Ampat Pulau Pinang: George Town • Penang Island • Seberang Perai • Northeast Penang Island • Southwest Penang Island • North Seberang Perai • Central Seberang Perai • South Seberang Perai • Air Itam • Balik Pulau • Batu Ferringhi • Batu Kawan • Batu Lanchang • Bayan Lepas • Bukit Mertajam • Butterworth • Gelugor • Jelutong • Kepala Batas • Nibong Tebal • Paya Terubong • Perai • Permatang Pauh • Pulau Tikus • Simpang Ampat • Sungai Jawi • Tasek Gelugor • Tanjung Bungah • Tanjung Tokong • Teluk Bahang • Teluk Kumbar • Alma • Ayer Rajah • Bandar Baru Air Itam • Bagan Ajam • Bagan Dalam • Bagan Jermal • Bagan Luar • Bandar Cassia • Bandar Perda • Bandar Tasek Mutiara • Batu Maung • Batu Uban • Bayan Baru • Bukit Jambul • Bukit Minyak • Bukit Tambun • Bukit Tengah • Ceruk Tok Kun • Green Lane • Juru • Kampong Serani • Kampung Siam • Kota Permai • Mak Mandin • Minden Heights • Mount Erskine • Penaga • Penanti • Pinang Tunggal • Relau • Rifle Range • Seberang Jaya • Seri Tanjung Pinang • Sungai Ara • Sungai Dua • Sungai Dua • Sungai Nibong • Sungai Pinang • Taman Free School • Taman Tun Sardon • Teluk Air Tawar • Valdor • Berapit New Village • Gertak Sanggul • Jawi New Village • Kampung Buah Pala • Kampung Selamat • Kampung Seronok • Kubang Semang • Machang Bubok New Village • Mengkuang Titi • Pantai Acheh • Permatang Damar Laut • Permatang Pasir • Permatang Rambai • Permatang Tinggi • Sungai Acheh • Sungai Lembu • Sungai Udang • Teluk Tempoyak • Aman • Betong • Gedung • Jerejak • Kendi • Lovers' • Penang • Rimau • Tikus Sikalastic 841 ST, Sikalastic 8800, Sikalastic 851, Mapei Purtop 1000, Mapei Purtop 600, Fosroc polyurea WPE, Fosroc polyurea WH 200, Fosroc polyurea FLM, Fosroc polyurea WCS, Quickseal MP250, Quickseal MP500, Quickseal PP350, Quickseal Reflect Silver, Quickspray Industrial W, Quickspray Supreme AL, Quickspray Supreme W, Quickspray Supreme HE, Quickseal PP350, Quickspray Supreme HP, Quickfloor 400, Quickfloor 500, Quickfloor 500 V, Quickspray Supreme HP Kedah: Baling District • Bandar Baharu District • Kota Setar District • Kuala Muda District • Kubang Pasu District • Kulim District • Langkawi District • Padang Terap District • Pendang District • Pokok Sena District • Sik District • Yan District • Alor Tajar • Anak Bukit • Baling • Bedong • Bukit Kayu Hitam • Bukit Pinang • Bukit Selambau • Changlun • Durian Burung • Guar Chempedak • Gurun • Jeniang • Jitra • Kepala Batas • Kodiang • Kota Sarang Semut • Kuah • Kuala Kedah • Kuala Ketil • Kuala Nerang • Kuala Pegang • Kulim • Kupang, Kedah • Langgar • Lunas • Megat Dewa • Merbok • Padang Matsirat • Padang Serai • Pendang • Pokok Sena • Semeling • Serdang • Sik • Siong, Kedah • Sintok • Sungai Lalang • Sungai Limau • Sungai Petani • Sungai Seluang • Tanjung Dawai • Tawar, Baling • Tokai • Yan • Bandar Laguna Merbok • Bandar Puteri Jaya • Bandar Darulaman • Lagenda Height • Bandar Baru Mergong • Tandop Baru • Bandar Amanjaya • Bandar Stargate • Bandar Starcity • Bandar Sejahtera • Bandar Ambangan Sarawak: Betong Division • Bintulu Division • Kapit Division • Kuching Division • Limbang Division • Miri Division • Mukah Division • Samarahan Division • Sarikei Division • Serian Division • Sibu Division • Sri Aman Division • Asajaya District • Bau District • Belaga District • Beluru District • Betong District • Bintulu District • Bukit Mabong District • Dalat District • Daro District • Julau District • Kabong District • Kanowit District • Kapit District • Kuching District • Lawas District • Limbang District • Lubok Antu District • Lundu District • Marudi District • Matu District • Meradong District • Miri District • Mukah District • Pakan District • Pusa District • Samarahan District • Saratok District • Sarikei District • Sebauh District • Selangau District • Serian District • Sibu District • Simunjan District • Song District • Sri Aman District • Subis District • Tanjung Manis District • Tatau District • Tebedu District • Telang Usan District • Padawan municipality • Kuching • Miri • Asajaya • Ba'kelalan • Balingian • Bario • Batu Kawa • Batu Niah • Bau • Bekenu • Beladin • Belaga • Belawai • Betong • Biawak • Bintangor • Bintulu • Dalat • Daro • Debak • Engkilili • Julau • Kanowit • Kapit • Kota Samarahan • Lawas • Limbang • Lingga • Lubok Antu • Lundu • Maludam • Marudi • Matu • Mukah • Oya • Pakan • Pusa • Sadong Jaya • Saratok • Sarikei • Sebauh • Sebuyau • Selangau • Sematan • Serian • Serikin • Sibu • Siburan • Simunjan • Song • Spaoh • Sri Aman • Sungai Tujuh • Tanjung Kidurong • Tanjung Manis • Tatau • Tebedu Sabah: Interior Division • Kudat Division • Sandakan Division • Tawau Division • West Coast Division Micropile Geoprofile Enginnering United Drillers LTY Geotechnics EBS Engineering and Construction Euromatec Holy Engineering Dextra Group Conceal Sdn Bhd Keller Malaysia Group Sanubari Cekal Jack-In Pile BBR Construction Systems G-Pile Sistem Geohan Foundtech Bauer Malaysia Cerucuk Malaysia Megacon Drilling Geodata Engineering Geofrontier Cinlepile Geostrength Engineering KL Geotechnics • Beaufort District • Beluran District • Keningau District • Kinabatangan District • Kota Belud District • Kota Kinabalu District • Kota Marudu District • Kuala Penyu District • Kudat District • Kunak District • Lahad Datu District • Nabawan District • Papar District • Penampang District • Putatan District • Pitas District • Ranau District • Sandakan District • Semporna District • Sipitang District • Tambunan District • Tawau District • Telupid District • Tenom District • Tongod District • Tuaran District • Beaufort • Beluran • Keningau • Kinabatangan • Kota Belud • Kota Marudu • Kuala Penyu • Kudat • Kunak • Lahad Datu • Nabawan • Papar • Pitas • Putatan • Ranau • Sandakan (Municipality) • Semporna • Sipitang • Tambunan • Tawau (Municipality) • Telupid • Tenom • Tongod • Tuaran • Banggi • Inanam • Kemabong • Kiulu • Likas • Membakut • Manggatal • Menumbok • Pagalungan • Paitan • Sepanggar • Tamparuli • Tanjung Aru • Tungku • Bingkor • Bongawan • Donggongon • Gum-Gum • Kimanis • Kalabakan • Kinarut • Kundasang • Lok Kawi • Long Pasia • Pensiangan • Sapulut • Sindumin • Sook • Telipok • Weston