The results of a topographical analysis created in AutoCAD are shown on the left and this data needs to be overlaid on an Ordnance Survey 1:50,000 raster map tile in Photoshop, shown on the right.Initially, this seems rather a conundrum but in fact, all we need to know is the map scale and the resolution of the raster image. The illustrations below show a typical example. Since we know the map scale (in this case 1:50,000), all we need to find is the resolution of the raster map. Autocad eps export.
Cracks in concrete roof slabCracks in concrete roof slab
I was asked by owner of a newly constructed building to inspect cracks in the top of a concrete roof. The building was constructed in April this year. The cracks were noticed because after heavy rainfall water would leak through the slab and into the building. The crack widths are about 3mm thick but there are quite a number of them on the roof slab, however none appearing on the soffit. The concrete supplier is blaming the contractor for inadequte curing, whilst the contractor is suggesting the concrete mix was not correct.
Question: Can anyone recommend any products that will seal the cracks or any solutions to this cracking problem. After sealing i would also advise that the slab be rendered with slope to facilitate faster runoff Thanks for any input SNaTCH Acceptable Cracks In Concrete Slabs
Cracks in concrete floors or slabs occur in poured concrete slabs may be found both in basement and in slab on grade or 'patio home' construction and have a variety of causes and cures that we discuss here as we explain how to repair cracked concrete floors and as we describe slab on grade construction or 'patio home' construction cracks and as. Is it normal to see cracks in new concrete placed over a trench for installing a french drain and sump pump in our basement? This work was completed over 30 days ago, but we see numerous cracks in the new concrete. The cracks seem to be spaced in sections, but also around the perimeters of the sections also. The slab is supported at the perimeter by concrete foundation walls and at the interior by concrete columns, drop slab, and column capitals. Review found cracking at the underside of slab in regions of positive bending (tension side; which I know can be expected) away from columns, but some of the cracks are larger than expected (1/8' wide). Cracks in Slabs on Ground ASCC Position Statement #29 Random cracking caused by drying shrinkage or thermal contraction of concrete slabs on ground is a common complaint of facility owners. They often argue that faulty design, materials, or construction must have caused such cracks. But even when plans and specifications for slabs on.
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