How to Construct FOUNDATION with Foundation (Anchor) Bolts & BASE PLATE for STEEL Structures

Constructing a foundation with anchor bolts and a base plate for steel structures involves:
Site Preparation, Foundation reinforcement, Casting of Concrete bases, Base Plate preparation, Anchor Bolts preparation and installation, Casting of foundation columns, Curing of concrete, Base Plate installation, Erection and alignment of steel stanchions/members.
1. Site Preparation

Survey and Excavation: Begin by surveying the site to mark the foundation's dimensions. Excavate the area to the required depth for the foundation based on soil conditions and structural loads.

2. Design and Planning

Foundation Design: The foundation, typically concrete, must be designed to handle the Base plate Preparation loads from the steel structure. The design should account for the weight of the structure, wind forces, seismic activity, and any other relevant factors.

Anchor Bolt Layout: The layout of anchor bolts should be precisely planned. These bolts will secure the steel structure to the foundation. The positions, sizes, and number of bolts depend on the structure's load requirements.

3. Base Plate Preparation

Base Plate Design: A steel base plate is used to distribute the loads from the structure to the foundation. The size and thickness of the base plate should match the design specifications.

Fabrication: The base plate is fabricated with provisions for the anchor bolts. This includes holes or recesses for the bolts to pass through.

4. Anchor Bolt Installation

Anchor Bolt Placement: The anchor bolts are either cast into the foundation (during concrete pouring) or embedded into pre-drilled holes. The bolts should be positioned accurately, often using templates or a bolt cage to maintain spacing and alignment.

Bolt Alignment: Ensure the bolts are aligned according to the design specifications, as misalignment can affect the integrity of the connection with the steel structure.

5. Foundation Pouring (if concrete)

Pour Concrete: After the anchor bolts are set in place, pour the concrete foundation around them. This step should be done carefully to avoid disturbing the bolts' alignment.

Curing: Allow the concrete to cure for the specified time to gain strength before any load is applied.

6. Base Plate Installation

Positioning the Base Plate: Once the foundation has cured, position the base plate over the anchor bolts. It may be necessary to shim the base plate to ensure it is level and aligned with the structure's requirements.

Securing the Base Plate: Tighten nuts onto the anchor bolts to secure the base plate in place. The plate may also be welded to the foundation for added stability.

7. Steel Structure Erection

Structural Steel Installation: After the base plate is securely fastened, the steel structure can be lifted and bolted or welded onto the base plate.

Final Alignment: During erection, check the alignment of the structure, ensuring it is vertical and positioned correctly as per the design.

8. Inspection and Testing

Inspection: Inspect the foundation, anchor bolts, and base plate for correct installation and compliance with design specifications.

[emmanueledem]

This video reminds me of my industrial training this, expecting more from you Sir 😊😊

[MartinsMiracle-ks]

Helpful, though I'll make more research on grouting❤️

[solomondgreat]

Should formwork be placed before or after reinforcement

[jimmoca]

Thanks for sharing 👍. I need engineer drawings for a 20x20 carport footing and foundation that will hold solar panels. 1 h beam on 2 sides at 10ft max

[solomondgreat]

Please how is the grouting done, it was not shown

[macdonald]

Sir, is the foundation done without depth or it's just for teaching purpose

[OkurinmaPrecious]

Nice, but I didn't really grab ....
Trying to relate it with the drawing

[davidarinze]

Nice one sir.
But it's a kind of hard trying to relate it with the drawing. But it's ok

[brybelchez]

Grouting not needed. Direct plate to plate is better

[ChinonsoOgalanya]

Sir, please how can the 50mm grouting be achieved on site and also the those nuts under the base plate won't it wash away from the bolt due to the application of load from the building