Pile-Screw Foundation for a Garage



Building a garage on screw piles is an affordable and effective way to create a secure shelter for your car. By following these instructions, you can build a garage yourself that will serve you for many years.

Before construction begins, you need to develop a garage design:

• Select a location and plan the site. Consider convenient access and a sufficient distance from other buildings.

• Pile layout drawing and plan. Be sure to include a pile placement diagram and load calculation.

• Construction type. Decide on the garage type (frame, metal, or permanent).

• Materials. The design specifies the materials for the frame, walls, roof, insulation, and floor.

Step-by-Step Instructions

1. Site Preparation. Clear the site of debris and vegetation. Level the ground.

2. Site Marking. Use a cord and pegs to mark the location of the piles and the outline of the future garage.

3. Screwing in the piles. Screw the piles into the ground to the required depth using a special tool (auger or pile driver).

4. Trim the piles. Cut the piles flush with a grinder or special tool. All piles must be flush.

5. Strapping. Strapping made of channel or timber reinforces the structure and ensures the foundation's stability.

6. Installing the grillage. The grillage is a horizontal beam that connects the piles and transfers the load from the walls and roof to the foundation. The grillage can be made of wood, metal, or reinforced concrete.

7. Installing the garage frame. The frame can be made of wood or metal.

8. Sheathing the walls and roof. The walls and roof can be sheathed with corrugated sheets, clapboard, wooden boards, or other materials.

Garage Flooring

The garage floor plays an important role in the operation and durability of the structure. The main options are:

• Wooden decking. Easy to install, but requires additional moisture protection.

• Concrete screed. A durable and strong option. Suitable for permanent garages.

• Slabs or mats. Used in frame garages as a temporary or seasonal covering.

How to Build a Floor in a Frame Garage on Screw Pile Foundations

1. Waterproofing. Lay a waterproofing layer to protect the floor from moisture.

2. Joist Laying. Install wooden joists around the perimeter.

3. Insulation. Place insulation, such as foam or mineral wool, between the joists.

4. Subfloor and Finish Floor. Lay a subfloor of moisture-resistant plywood, then cover it with a finishing material.

Additional Tips:

• Carefully examine the soil on the site before beginning construction.

• Use high-quality materials and tools.

• Follow all instructions and safety regulations.

• Don’t be afraid to seek help from specialists if you have questions or difficulties.

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