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Decks are often built from pressure-treated wood. Pressure-treated wood is long lasting and holds up to wet and icy conditions. Pressure-treating chemicals are known to be toxic. [2] Both softwood and hardwood decks need to be finished after installation using either an oil or varnish to prevent weathering, wear, mould, algae and wood-boring ...
When free hydroxyl groups are transformed to acetoxy groups, the ability of the wood to absorb water is greatly reduced, rendering the wood more dimensionally stable and, because it is no longer digestible, extremely durable. In general, softwoods naturally have an acetyl content from 0.5 to 1.5% and more durable hardwoods from 2 to 4.5%.
Once the wood gets wet, floors can swell, buckle, and warp. To best preserve your hardwoods, wet mop high-traffic areas only twice a month. Areas that get less traffic can be cleaned monthly.
In between the posts, two 2x4s are attached to the posts with screws for the best connection. The lower board is placed 3.5" from the top of the finish deck to the bottom of the board. The top board is placed with the top at 35" from the deck. Then the vertical 2x2 pressure treated wood balusters are installed spaced regularly every 3.5". Then ...
While the perceived risk of death by falling trees (a part of the "tree risk" complex) is influenced by media and often hyped (the objective risk has been reported to be close to 1 : 10.000.000, almost as low as death by lightning), [6] singular events have encouraged a "proactive" stance so that even lightly damaged trees are likely to be removed in urban and public traffic surroundings. [3]
The forest is a natural system that can supply different products and services. Forests supply water, mitigate climate change, provide habitats for wildlife including many pollinators which are essential for sustainable food production, provide timber and fuelwood, serve as a source of non-wood forest products including food and medicine, and contribute to rural livelihoods.
The New York Times gave an example of "machinery that is not lubricated on schedule" that functions "until a bearing burns out." Preventive maintenance contracts are generally a fixed cost, whereas improper maintenance introduces a variable cost: replacement of major equipment. [13] Main objective of PM are: Enhance capital equipment productive ...
A 1930 report listed 33 bridges and estimated that the cost of bridge-keepers, extra maintenance for the decks, etc. amounted to £15,500 a year, as against £4,307 ...