Does a leca base need to be anchored with chemical anchors into a concrete foundation?

[PTA]

Two rows of concrete blocks on top of each other form a 40 cm high, 19 cm wide base for an Attefall house 6x4m in sometimes windy Jämtland. The wall is mounted on a concrete footing with regular mortar. Does the wall need to be anchored with chemical anchors in the footing?

 

[Alexn72]

Is there any tar paper against the slab?
Is the base completely above ground.
Will the house be attached to the base.
Is the base reinforced?

 

[PTA]

Is there any paper against the slab?
Is the base completely above ground?
Will the house be attached to the base?
Is the base reinforced?

The Lecablock are attached to the concrete base with mortar, i.e., no paper in between. The paper lies above the wall directly under the sills. Lecablock are completely above ground on the base's surface, which is level with the ground/gravel. The base is 20 cm thick and 40 cm wide and is reinforced in two layers five cm from the bottom and top, two bars in each layer. The Lecawall is reinforced in the top layer directly under the sills. The sills are fixed with lightweight concrete screws in every other gap.

 

[fribygg]

I don't think that houses on a concrete slab generally need to be additionally anchored, it's not like houses usually fall off their foundations or blow over, the weight of the house should be enough to keep it in place.

If a building still needs to be fastened onto a concrete slab, I recommend embedding rebar when making the foundation, then drilling through the sill and bending the bars (this is how you anchor greenhouses that have low weight and large wind exposure).

 

[Tjrex]

No, you don't need to secure it further; it seems to be well done from the start.

 

[PTA]

Thank you for the response.