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To remove the mortar, contractors often aggressively clean the walls with pressurized water or acid solutions, which can open up additional voids and increase the possibility of water penetration. Flush joint This joint is best used when the wall is intended to be plastered or joints are to be hidden under paint.
If there are cracks or problems in the actual bricks or stone masonry there could be a larger problem that also needs to be addressed. If there is a larger issue, repointing may cause further damage. If a historic structure needs repointing, building owners usually hire an architectural historian or conservator to help pinpoint the issues. [ 2 ]
Powered machines are built to give the impression that a hand-powered bush hammer has been applied to the concrete. This allows contractors to work on a larger amount of the material without using individual hammers for the project. This saves time and labor costs for those working with the tool.
Shoring is designed to prevent collapse where shielding is only designed to protect workers when collapses occur. Concrete-structure and stone-building shoring, in these cases also referred to as falsework, provides temporary support until the concrete becomes hard and achieves the desired strength to support loads.
Typically, a landscaping rake boasts a head measuring 30 to 38 inches or even broader, featuring steel tines set at a 90-degree angle to the handle. A stone rake is similar to a landscape rake, but with a narrower head of about 18 to 28 inches and is constructed from steel or aluminum. The head sits at a 90-degree angle to the handle.
A rail repair dutchman is typically a 4–6-inch (100–150 mm) long piece of rail that is cut in advance for the purpose and carried by a section crew. If the gang finds a rail with a chipped or broken end, they remove the connector plates ( fishplates ), cut out the damaged section, replace it with the dutchman, and bolt the connectors back ...
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