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Example of flat piece of concrete having dislodged with corroded rebar underneath, Welland River bridge across Queen Elizabeth Way in Niagara Falls, Ontario. The expansion of the corrosion products (iron oxides) of carbon steel reinforcement structures may induce internal mechanical stress (tensile stress) that cause the formation of cracks and disrupt the concrete structure.
Ganoderma zonatum is a plant pathogen that infects the palm species causing butt rot. It is a fungus that infects the bottom 122–152 centimeters (4–5 feet) of the plant also rotting the roots. It has been known to be in both natural and planted environments and in the majority of cases only in palms.
Walls of more than half-brick thickness need to be drilled at 230 millimetres (9.1 in) spacing to a depth of just over half the wall thickness. Walls of over 460 millimetres (18 in) thickness should be drilled from both sides. Fungicide is then injected into the holes, and the wall surfaces are sprayed. [8]
Inflorescence rot Diplodia spp. Fusarium spp. hielaviopsis spp. Khamedj Mauginiella scaettae: Leaf dieback Alternaria sp. Omphalia root rot Omphalia tralucida. Omphalia pigmentata. Pestalotia leaf spot Pestalotiopsis palmarum = Pestalotia palmarum. Taches brunes (brown leaf spot) Mycosphaerella tassiana. Cladosporium herbarum [anamorph ...
If the wall is a thick one, the holes should extend quite through it. The fire boxes with air-blast, already described, are then set to work on both sides of the wall, at the level of the bore-holes, until the brickwork is thoroughly heated and dried. In the Charlottenburg Palace this result has been attained with walls 1 metre (39 inches) thick.
A fallen tree in Bradley Park. A streetlight on Wells Road with minor damage. A crossing sign tipped over at Palm Beach's Par 3 golf course. The effects of Hurricane Helene in Palm Beach were so ...
A tree throw or tree hole is a bowl-shaped cavity or depression created in the subsoil by a tree. They are formed either by the long-term presence and growth of tree roots or when a large tree is blown over (as a windthrow ) or has its stump pulled out which tears out a quantity of soil along with the roots.
Root barriers can be used to protect infrastructure from damage by tree roots below. [1] They are also moisture-proof, which can be useful to preserve buildings on clay soils by preventing moisture escaping laterally. [2] After installation the soil under the building can be rehydrated if necessary.