What is heave protection?

Jablite Claymaster (Clay Heave Protection) is a product that provides protection against clay heave. The expansion and contraction process during wet and dry periods is known as ‘clay heave’. This can cause severe problems with foundations.

Do I need heave protection?

Drains are just as vulnerable to heave and should be protected. If heave is likely, then minimum gradients should be avoided and steeper gradients with additional granular material of up to 150mm thickness should be used.

What are heave boards?

The Jablite Ground Heave Protection boards are a cellular-structured void former that is precision-cut from EPS (expanded polystyrene). The boards are manufactured in a range of thicknesses to meet the application – Beam, Slab or Insulated Slab. Protects buildings against upward pressure caused by ground heave.

What is cordek Cellcore?

The Cellcore HX S range is designed to protect reinforced concrete floor slabs from the upward forces associated with the effects of ground heave.

Can slab heave be fixed?

Slab heave can be fixed. The cracks in your house that open and close can be stabilised. Cornell Engineers has the experience and knowledge to help you fix slab heave in your home.

Is heave covered by insurance?

Most household insurance policies, and some commercial property insurance policies, cover loss or damage caused by subsidence, heave and landslip. They usually cover the cost of repairing the loss or damage and not the cost of preventing further subsidence.

How do you calculate heave?

Po = overburden stress plus the vertical stress from foundation loading on nth layer. The surface heave can also be calculated as the area under percent swell SLi versus depth curve, as illustrated in Fig.

How can we prevent soil heaves?

To protect these structures, you must eliminate or minimize at least one of the three conditions that lead to frost heave: reduce frost penetration; keep water out of the freezing zone; or make sure soil in the freezing zone is not susceptible to frost.

What is a void former?

Void Former is a lightweight material in structural concrete in foundations, beam and slabs to fill structurally non-working areas and against clay heave. They are strong enough to support the weight of wet concrete as well as steel reinforcements. They come in either full form or in honeycombed form.

What is clay board?

Clayboard® Residential is a unique, environmentally friendly void former and foundation system to protect against clay heave and ground movement. Clayboard® has a 100% recycled and biodegradable paper honeycomb core set between lightweight polypropylene facings which have up to 70% recycled material content.

What is Pecavoid?

MAX FRANK’s Pecavoid® is a proven and effective solution to combat the effects of ground heave on foundations and slabs. Pecavoid® acts as a protective layer, between the soffit of the suspended foundation and the expanding clay soil, and is designed to compress when ground heave takes place.

Does insurance cover slab heave?

If you’ve experienced a slab leak, insurance coverage may kick in, especially if the cause was the result of a covered peril. However, you may have to pay for repairs yourself if the plumbing leak was the result of poor maintenance on your part.