Category Archives: Featured Articles

Location of unmarked graves using Ground Penetrating Radar

grave-survey_400mhz

Some cemeteries are hundreds of years old; unmarked graves can be common. Sandberg can undertake Ground Penetrating Radar (GPR) surveys for the location of graves and cemetery surveys.
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Hollow block reinforced wall defect surveys

reinforced-wall-section

Concrete blocks, especially those with hollow cores, offer various possibilities in masonry construction. Filling some or all of the cores with concrete, with or without reinforcing steel, offers much greater resistance to bending; however major performance and durability problems can arise if the reinforced cores are not fully filled with concrete. The question is, how can you tell? Ground Penetrating Radar offers a simple and effective solution…
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Ground Penetrating Radar used to locate Voids in Stone Wall

gpr-scanning-of-stone-wall-for-voids

The purpose of the survey was to establish any voids present within the stone wall construction of St Helen’s church, Broadgate London. The North wall and part of the East wall were nominated for survey. The wall construction comprised a stone inner and outer leaf, with a rubble fill in-between; the total wall construction is approximately 900mm to 1m thick.
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