1984. Subsidence and heave explained. Well the majority of the properties within London and the […] CBD-26. Honeycomb Cardboard Voidformer Solutions Developed to create space between the soil and building foundation, Clayform reduces the upward force transmitted to the structure due to ground heave. Ground heave is primarily caused by the rehydration of clay or expansive shale soils, overburden recovery resulting from deep excavations, mining or trees and vegetation. Vertical ground movements of 4 to 8 inches are common and as much as 24 inches have been reported. Each board is engineered to protect the foundations of buildings against the Page 8 of 22 All new foundations provide a prime condition for water collection as their coverage Tim Stubbs, Lemon Groundworks Solutions I started to work with Clayboard on a number of sites about five years ago. Ground Heave around Driven Piles in Clay. in. A Heave is most often caused when a mature tree dies or is removed and its root network no longer draws water from the subsoil. [10] Differential frost heave (DFH) refers to laterally nonuniform uplifting of the ground surface due to freezing of water within the soil. While completely eliminating the supply of water and the resulting phenomena of frost heave is not possible, its impact can be minimized if the moisture intrusion into the subsoil is controlled. The ground therefore accumulates water in the absence of this dehydrating effect and swells, forcing the per sq. GROUND HEAVE SOLUTIONS - Designed to protect floor slabs, ground beams and pile caps from the effects associated with expansive soil types VOC & GROUND GAS PROTECTION - An advanced range of barriers and passive venting systems to protect buildings from the ingress of VOC’s and ground gases Determine foundation depth for your ground conditions The easiest way to determine the correct depth for your foundations when it comes to trees is to use our Foundation Depth Calculator . The change, more often than not, is irreversible. Slab heave can also be caused by the ground drying out. Ground Heave Solutions Clay Heave Solutions Shuttering Gabion Baskets Hystools, Deckchairs, Highchairs Circular Spacers Plastic Spacers Tying Wire Tie Bar and accessories Expansion Joint Foam Chemicals Under Pinning Cordek Heaveguard Ground Heave Solutions EPS - 50mm Heaveguard is a compressible expanded polystyrene product, used when foundations need to be protected against ground heave.As an integral part of the Cordek solution to ground heave, Heaveguard is used to protect against lateral heave, typically on the inside face of piled ground beams or deep trench fill foundations. Jablite Ground Heave Protection is supplied in seven different performance grades to meet the required safe-load and fail-load performances for different thicknesses of concrete. This will take into account the proximity of the tree and the type of soil, among other factors, to calculate the depth required up to a maximum depth of 2.5m. Known as the Heave Monitoring Site, the site’s purpose is ostensibly to monitor ground heave as the dig progresses. Ground heave is the opposite of subsidence, which is when the ground sinks. / Identification of Ground Heave Associated with Pipeline Leaks Utilising Optical Fibre Based Distributed Acoustic Sensing Free Technical Paper Over the last few years Distributed Acoustic Sensing has established itself as a key component of any modern pipeline monitoring system. Heave is the phenomenon of the soil beneath a property expanding and pushing the ground upwards, which can cause structural damage to a building. Unlike other solutions Heave Stopper creates a complete void beneath the concrete groundbeams to offer maximum protection from clay ground heave. GROUND HEAVE SOLUTIONS A world of ground heave solutions with NPA geocells NPA (novel polymeric alloy) geocells can provide ground heave solutions due to frost action in a wide range of applicable industries around the globe that are adversely affected by regionally unique ground conditions and dynamic ground movement. Yet the power of a frost heave is virtually unstoppable, because the expansive force of freezing water is huge, somewhere around 50,000 lbs. If, however, it … Prevent problems with ground heave: speak to the team at Precon today The remedial costs of dealing with ground heave can be eye-watering. Causes of the ground drying out include tree roots, long dry seasons, terminating irrigation and uneven shading of the ground. In the foundation or slab of a house, which causes damage to building. 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