RAA Engineering Services

Soil Nailing Procedure

Soil nailing is a construction technique used to stabilize slopes, excavations, or retaining walls by reinforcing the soil mass. The method involves inserting closely spaced steel bars (nails) into the soil, which are then grouted into place, creating a composite mass that can resist the forces acting on it. Here's a step-by-step procedure for soil nailing:

1. Site Preparation

Survey and Design: Conduct a site survey to analyze the slope or wall and develop a design that specifies the length, diameter, spacing, and inclination of the soil nails based on soil conditions.

Excavation: Excavate the area in stages (called lifts) to the required depth. Each excavation is typically around 1 to 2 meters at a time to maintain stability.

2. Drilling Holes for Soil Nails

Drill Holes: Bore horizontal or slightly inclined holes (typically 10 to 20 degrees from horizontal) into the soil or rock mass. The diameter of these holes depends on the design but is usually between 75 mm and 150 mm.

Hole Length: The length of the hole corresponds to the design requirements for the depth of the nails, typically 3 to 10 meters, depending on site conditions and design.

3. Inserting the Nails

Steel Nails: Insert steel bars (commonly 25 to 40 mm in diameter) into the pre-drilled holes. The bars may be ribbed or deformed to enhance bonding with grout.

Corrosion Protection: If needed, provide corrosion protection for the nails, either by galvanizing the steel or applying epoxy coatings. Double corrosion protection is typically recommended in aggressive environments.

4. Grouting the Nails

Grout Injection: Inject grout (usually a cement-based mix) into the hole around the soil nail to bond the steel to the surrounding soil or rock. The grout is pumped under pressure to ensure full encapsulation and strength.

Grouting Techniques: There are two main grouting techniques:

Gravity Grouting: Gravity-based injection of grout, typically used for stable soils.

Pressure Grouting: Involves pumping grout under pressure for better soil contact and strength.

5. Facing Installation

Temporary Facing: Apply a temporary facing, such as shotcrete, wire mesh, or steel plates, to maintain stability during construction. Shotcrete is typically sprayed onto the excavated surface and nails to provide immediate support.

Permanent Facing: Once all nails are installed and stabilized, apply a permanent facing (shotcrete, cast-in-place concrete, or precast panels) to protect the surface and ensure long-term stability.

6. Drainage Installation

Drainage Provisions: Install drainage systems (such as weep holes or drainage mats) behind the facing to manage water buildup, which can cause pressure behind the soil nails and reduce effectiveness.

7. Monitoring and Testing

Pullout Tests: Perform pullout tests on some of the nails to ensure that they meet design strength requirements.

Monitoring: Continuously monitor the wall or slope for movement and stress on the nails during and after construction.

8. Final Finishing

Finishing: Once the nails and facing are in place and the structure is stabilized, apply finishing treatments, such as paint, protective coatings, or landscaping to improve aesthetics and further protect the system.

Key Considerations:

Soil Conditions: Proper geotechnical investigation is essential for understanding the soil type, water table, and other factors that influence nail design.

Nail Spacing and Inclination: These factors depend on the forces acting on the wall or slope and are determined during the design phase.

Safety: Ensure that the excavation is stable at all times to protect workers and avoid collapses.

Soil nailing is a highly adaptable and effective method for slope stabilization, particularly in urban areas where space is limited, and traditional retaining walls are not feasible.

Last March 9, 2024, ACI Philippines held the 𝐎𝐚𝐭𝐡𝐭𝐚𝐤𝐢𝐧𝐠 𝐂𝐞𝐫𝐞𝐦𝐨𝐧𝐲 𝐚𝐧𝐝 𝐆𝐞𝐧𝐞𝐫𝐚𝐥 𝐌𝐞𝐦𝐛𝐞𝐫𝐬𝐡𝐢𝐩 𝐌𝐞𝐞𝐭𝐢𝐧𝐠 at the Great Eastern Hotel, 1403 Quezon Avenue, Quezon City, Philippines.

During the event, 𝐄𝐧𝐠𝐫. 𝐅𝐫𝐨𝐢𝐥𝐚𝐧 𝐌𝐚𝐫𝐭𝐢𝐥𝐥𝐚𝐧𝐨 celebrated his three excellent years leading ACI Philippines as the President.

A warm welcome also extends to the 𝙣𝙚𝙬𝙡𝙮 𝙞𝙣𝙙𝙪𝙘𝙩𝙚𝙙 𝘼𝘾𝙄 𝙋𝙝𝙞𝙡𝙞𝙥𝙥𝙞𝙣𝙚𝙨 𝘽𝙤𝙖𝙧𝙙 𝙤𝙛 𝙏𝙧𝙪𝙨𝙩𝙚𝙚𝙨 for the fiscal years 2024-2026.

𝐀𝐫𝐜𝐡. 𝐄𝐝𝐯𝐢𝐥𝐨𝐫 𝐈𝐥𝐚𝐧𝐨 leads as the new 𝐏𝐫𝐞𝐬𝐢𝐝𝐞𝐧𝐭 with the 𝐀𝐂𝐈𝐏 𝐃𝐢𝐫𝐞𝐜𝐭𝐨𝐫𝐬, 𝐄𝐧𝐠𝐫. 𝐂𝐡𝐫𝐢𝐬𝐭𝐢𝐚𝐧 𝐎𝐫𝐨𝐳𝐜𝐨, 𝐄𝐧𝐠𝐫. 𝐀𝐥𝐥𝐚𝐧 𝐁𝐞𝐧𝐨𝐠𝐬𝐮𝐝𝐚𝐧, 𝐌𝐬. 𝐕𝐢𝐧𝐠 𝐏𝐚𝐪𝐮𝐢𝐧𝐨𝐥, 𝐄𝐧𝐠𝐫. 𝐆𝐢𝐥 𝐂𝐫𝐮𝐳, 𝐄𝐧𝐠𝐫. 𝐄𝐝𝐰𝐢𝐧 𝐌𝐚𝐜𝐚𝐫𝐚𝐞𝐠, 𝐄𝐧𝐠𝐫. 𝐉𝐮𝐧𝐞𝐥 𝐑𝐨𝐦𝐞𝐫𝐨, 𝐄𝐧𝐠𝐫. 𝐃𝐚𝐧𝐢𝐥𝐨 𝐃𝐨𝐦𝐢𝐧𝐠𝐨, 𝐚𝐧𝐝 𝐌𝐫. 𝐄𝐯𝐚𝐫𝐢𝐬𝐭𝐨 𝐕𝐚𝐬𝐪𝐮𝐞𝐳.

Also with them are now the unwavering ex-officio, the 𝙥𝙖𝙨𝙩 𝙥𝙧𝙚𝙨𝙞𝙙𝙚𝙣𝙩𝙨 𝙤𝙛 𝘼𝘾𝙄 𝙋𝙝𝙞𝙡𝙞𝙥𝙥𝙞𝙣𝙚𝙨 - 𝙀𝙣𝙜𝙧. 𝙁𝙧𝙤𝙞𝙡𝙖𝙣 𝙈𝙖𝙧𝙩𝙞𝙡𝙡𝙖𝙣𝙤, 𝙀𝙣𝙜𝙧. 𝙍𝙖𝙢𝙤𝙣 𝘼𝙡𝙡𝙖𝙙𝙤 𝙖𝙣𝙙 𝙈𝙨. 𝙀𝙡𝙡𝙚𝙣 𝘾𝙝𝙪𝙖.

With them at the helm, ACI Philippines will continue to advance to the greatest heights. 𝙃𝙚𝙧𝙚 𝙖𝙩 𝘼𝘾𝙄, 𝙬𝙚 𝙖𝙧𝙚 𝙖𝙡𝙬𝙖𝙮𝙨 𝙖𝙙𝙫𝙖𝙣𝙘𝙞𝙣𝙜!

Learn the techniques for becoming a top Construction Project Manager in 2023 with ! 🤩
Be equipped in the latest trends and modern strategies for managing construction projects.

Join our 𝟯-𝗛𝗢𝗨𝗥 𝗟𝗜𝗩𝗘 & 𝗜𝗡𝗧𝗘𝗥𝗔𝗖𝗧𝗜𝗩𝗘 𝗧𝗥𝗔𝗜𝗡𝗜𝗡𝗚 + 𝗤&𝗔 𝗦𝗘𝗦𝗦𝗜𝗢𝗡 in 𝗖𝗢𝗡𝗦𝗧𝗥𝗨𝗖𝗧𝗜𝗢𝗡 𝗣𝗥𝗢𝗝𝗘𝗖𝗧 𝗠𝗔𝗡𝗔𝗚𝗘𝗠𝗘𝗡𝗧 𝟭𝟬𝟭: 𝗟𝗮𝘁𝗲𝘀𝘁 𝗧𝗿𝗲𝗻𝗱𝘀 𝗮𝗻𝗱 𝗕𝗲𝘀𝘁 𝗣𝗿𝗮𝗰𝘁𝗶𝗰𝗲𝘀 𝗳𝗼𝗿 𝗠𝗮𝗻𝗮𝗴𝗶𝗻𝗴 𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗶𝗻 𝟮𝟬𝟮𝟯! 🤩

𝗜𝗡 𝗧𝗛𝗜𝗦 𝗖𝗢𝗨𝗥𝗦𝗘, 𝗬𝗢𝗨 𝗪𝗜𝗟𝗟 𝗟𝗘𝗔𝗥𝗡:
✅ What is Construction Management
✅ Role of Construction Project Manager
✅ Traditional vs Modern Construction Project Management
✅ Comparison of the Construction Industry & Manufacturing Industry
✅ Phases of a Construction Project
✅ Construction Management Bidding Process
✅ Latest trends & Concepts in Management
**𝙋𝙧𝙤𝙟𝙚𝙘𝙩 𝙈𝙖𝙣𝙖𝙜𝙚𝙢𝙚𝙣𝙩 𝙄𝙣𝙨𝙩𝙞𝙩𝙪𝙩𝙚 𝙎𝙩𝙖𝙣𝙙𝙖𝙧𝙙𝙨 & 𝙋𝙧𝙞𝙣𝙘𝙞𝙥𝙡𝙚𝙨 𝙬𝙞𝙡𝙡 𝙗𝙚 𝙪𝙨𝙚𝙙

Things just got 𝗕𝗘𝗧𝗧𝗘𝗥 and 𝗕𝗜𝗚𝗚𝗘𝗥 this time than ever before! 🥳
𝗙𝗶𝗿𝘀𝘁 𝟭𝟬𝟬 𝗽𝗮𝗿𝘁𝗶𝗰𝗶𝗽𝗮𝗻𝘁𝘀 𝘁𝗼 𝗿𝗲𝗴𝗶𝘀𝘁𝗲𝗿 𝘄𝗶𝗹𝗹 𝗴𝗲𝘁 𝘁𝗵𝗲𝘀𝗲 𝗶𝗻𝗰𝗹𝘂𝘀𝗶𝗼𝗻𝘀 𝗳𝗼𝗿 𝗙𝗥𝗘𝗘:
🎁 Construction Forms & Templates
🎁 2D AutoCAD Blocks for Construction Drawings
🎁 Admin Procurement Templates
🎁 Training Manual in PDF Format
🎁 Training Certificate from
𝗠𝗢𝗥𝗘 𝗣𝗥𝗜𝗭𝗘𝗦 𝗔𝗪𝗔𝗜𝗧𝗦 𝗬𝗢𝗨 𝗜𝗡𝗦𝗜𝗗𝗘 𝗧𝗛𝗘 𝗧𝗥𝗔𝗜𝗡𝗜𝗡𝗚!! 🥳

𝗗𝗲𝗰𝗲𝗺𝗯𝗲𝗿 𝟯, 𝟮𝟬𝟮𝟯 (6:00pm-9:00pm)
Philippine Standard Time
**𝙏𝙝𝙞𝙨 𝙞𝙨 𝙤𝙥𝙚𝙣 𝙩𝙤 𝙖𝙡𝙡 𝙎𝙩𝙪𝙙𝙚𝙣𝙩𝙨 𝙖𝙣𝙙 𝙋𝙧𝙤𝙛𝙚𝙨𝙨𝙞𝙤𝙣𝙖𝙡𝙨!

𝗛𝗨𝗥𝗥𝗬‼️
REGISTER NOW FOR ONLY 𝟯𝟰𝟵𝗽𝗵𝗽 UNTIL SLOTS ARE AVAILABLE‼️
𝗞𝗜𝗡𝗗𝗟𝗬 𝗙𝗜𝗟𝗟 𝗢𝗨𝗧 𝗧𝗛𝗘 𝗙𝗢𝗥𝗠 𝗕𝗘𝗟𝗢𝗪 𝗧𝗢 𝗥𝗘𝗚𝗜𝗦𝗧𝗘𝗥:
📌https://forms.gle/r8aCLfMQ7Bftf84d8

So, what are you waiting for?
𝙄𝙉𝙑𝙀𝙎𝙏 𝙄𝙉 𝙔𝙊𝙐𝙍 𝙁𝙐𝙏𝙐𝙍𝙀, 𝘾𝙊𝙉𝙉𝙀𝘾𝙏 𝙒𝙄𝙏𝙃 𝙐𝙎! ✨

Happy 3rd Anniversary R.A.A. Engineering Services
Thank you Lord for all the blessings🙏🏼🙏🏼🙏🏼

https://www.facebook.com/100067796358539/posts/655603143376225/?mibextid=rS40aB7S9Ucbxw6v

WATCH OUT!

The PICE National Board of Directors thru the Conventions Committee will be hosting the 49th PICE National Convention and Technical Conference slated on 24-25 November 2023 at SMX Convention Center, SM Lanang Premiere Davao City with the Theme: “Innovations in Interdisciplinary Approaches to Civil Engineering Challenges”.

Calling all academicians, industry practitioners, researchers, innovators, and civil engineers who wish to participate by being one of the presenters in the technical conference to submit their abstracts/paper on or before the deadline on 29 September 2023.

More details on this big event shall be released soon!

Please see abstract template:
https://forms.gle/uXA4vAuT4GLgTRTB7