What means pressure treatment?
Pressure-Treated Vs. Pressure-treated lumber is the result of a process that uses high pressure to inject a preservative into the wood. It's a process that extends the longevity of the wood considerably, adding decades to the life of the material.
What is used for pressure treatment?
The most widely used alternative to CCA is alkaline copper quat, or ACQ. Copper is toxic to various insects and fungi that might cause decay. ACQ binds to wood fibers very well and allows wood to last decades even when it is in contact with the ground.
How does pressure treatment work?
In the pressure-treating process, lumber is sealed in a tank, and air is extracted, creating a vacuum. Then a solution containing chromium, copper, and arsenic is added. Because of the vacuum, the chemicals are carried deep into the wood.
How long does pressure treatment last?
40 yearsHow Long Does Pressure-Treated Wood Last? It depends on the climate, the type of wood, its uses, and how well it's maintained. While pressure treated poles can stay up to 40 years without any signs of rot or decay, decks and flooring might only last around 10 years.Oct 5, 2020
Can I use pressure treated wood in a garden?
Modern Pressure-Treated Lumber According to the American Wood Protection Association and the U.S. Environmental Protection Agency, lumber treated with ACQ is safe for garden use. Its durability and nontoxicity make it among the best woods for raised garden beds.
Can I use pressure treated wood for garden box?
Even though the new pressure-treated woods are considered safe, Wolmanized Outdoor, according to its Web site, does not recommend using pressure-treated wood where the preservatives may become a component of food. Its recommendation is to use an impervious liner between the wood and the soil.
How toxic is pressure treated wood?
According to the National Academy of Sciences, long-term exposure to the arsenic that is found in some types of CCA-pressure-treated lumber can increase the risk of lung, bladder, and skin cancer over a person's lifetime.
How can you tell if a board is pressure treated?
Look for a stamp telling you it's pressure treated wood. The end tag should identify the preservative used, the rating, and the preservation company. You'll want to avoid using any wood that was treated with Chromated Copper Arsenate (CCA). This preservative includes a form of arsenic.Apr 9, 2022
Do you need to treat pressure treated wood?
Most pressure treated wood will not need treating for a decade or two, so you shouldn't need to apply another preservative coating. Many of our pressure treated sheds are guaranteed for 15 years against rot and decay without any need to re-treat.Jan 12, 2017
What is better pressure treated wood or cedar?
Cedar is stronger and more durable than pressure-treated lumber. Pressure-treated lumber can warp and weather within a few years if left untreated, while cedar is more capable of naturally keeping its shape. However, cedar is more susceptible to cosmetic damages, such as dents and scratches.Dec 10, 2021
How long will a pressure treated 6x6 last in the ground?
A PT post will last a long time in concrete, maybe 5 to 10 years in soil alone. I suggest you embed the post in concrete, trowel a peak around the post so water runs off, and don't let the PT post come in contact with the ground.Mar 2, 2011
How does pressure treated wood age?
Over time, most treated lumber will shrink slightly across its width as it dries out. Take this small amount of shrinkage into account when laying decking or fence boards. After being outdoors for six to 12 months, treated lumber will develop cracks, called "checks," along the surface of each board.Jul 3, 2013
What is pressure treatment?
Pressure treatment is a process that forces wood preservatives or fire-retardants into the wood. These processes are considered the best and most effective method to extend and preserve timber life. Preservatives protect the wood from attack by wood ingesting insects; like termites, and wood rot caused by fungal decay.
How does pressure treating work?
The pressure-treating process starts when forklifts place the wood on a tram that will move the wood into a large steel cylinder; called a vacuum pressure vessel. Once the wood is loaded into the cylinder, the doors are closed and the cylinder is sealed. An industrial vacuum pump removes air from the cylinder, and that includes pulling air out ...
Why is pressure applied to wood?
Pressure is applied to the solution in order to force the preservatives deep into the wood cells. Cycle times and pressure settings are adjusted based on the retention levels needed and the species of the wood being treated.
Preparing Wood for Pressure Treatment
The purpose of wood pressure treatment is to force preservative chemicals deep into the cellular structure of the wood. The chemical acts as a barrier between the wood and biological deterioration agents, so that the service life of the wood can be substantially increased.
Treatment Processes
In a typical pressure treatment process, wood is placed in a horizontal cylinder up to 150 ft. long and 7 ft. in diameter as shown in Figure 3. The cylinder is flooded with the chemical followed by a cycle of pressure and vacuum. Pressure treatment methods are classified into two basics groups: full-cell and empty-cell processes.
Preservative Chemicals
Preservative chemicals used for the pressure treatment process can be classified into three groups: tar oil based, oil-borne, and water-borne preservatives. Creosote is the most commonly used tar oil preservative chemical. It is often called coal tar creosote because of its close relationship to toluene, benzene, and tar.
What is the first line of therapy for high blood pressure?
Diuretics are often recommended as the first line of therapy for most people who have high blood pressure. However, your doctor may start a medicine other than a diuretic as the first line of therapy if you have certain medical problems. For example, ACE inhibitors are often a choice for people with diabetes.
What to do if blood pressure is 20/10?
If your blood pressure is more than 20/10 points higher than it should be, your doctor may consider starting you on two drugs or placing you on a combination drug.
How to reduce blood pressure with alcohol?
Getting regular aerobic exercise (such as brisk walking at least 30 minutes a day, several days a week) Limiting alcohol to two drinks a day for men, one drink a day for women. In addition to lowering blood pressure, these measures enhance the effectiveness of high blood pressure drugs.
What is considered high blood pressure?
High blood pressure is now classified as a systolic blood pressure greater than 130 and diastolic over 80. To prevent high blood pressure, everyone should be encouraged to make lifestyle modifications, such as eating a healthier diet, quitting smoking, and getting more exercise. Treatment with medication is recommended to lower blood pressure ...
Why is high blood pressure dangerous?
Hypertension, or high blood pressure, is dangerous because it can lead to strokes, heart attacks, heart failure, or kidney disease. The goal of hypertension treatment is to lower high blood pressure and protect important organs, like the brain, heart, and kidneys from damage. Treatment for hypertension has been associated with reductions in stroke ...
What is pressure treated wood?
Pressure treatment is an affordable alternative to expensive naturally rot-resistant lumber. The preservatives provide protection against rot, insects, mold, and fungi, so the wood lasts longer. Treated wood is made from strong evergreen species making it suitable for most building projects.
What is Pt lumber used for?
Some lumber is also treated for fire protection and used throughout different areas of residential, commercial, and industrial construction. There are many other uses for pt lumber, including docks, boathouses, sheds, boardwalks, play structures, gazebos, and the list goes on.
Is pressure treated lumber safe?
While most residential pressure treated lumber is deemed safe for use, du st and particles can still be harmful.
Is pressure treated lumber good for damp areas?
Outside building projects and even some damp areas inside require wood that is resistant to moisture damage. Using expensive wood that is naturally resistant may not fit the budget. Luckily, a more budget-friendly option of pressure treated lumber grades is available. Pressure treated lumber has been infused with preservatives to prevent rot ...
What does blood pressure measure?
A blood pressure reading, as shown in the blood pressure monitor in the image, measures the pressure in your arteries when your heart beats (systolic pressure) in the first number, and the pressure in your arteries between heartbeats (diastolic pressure) in the second number.
Why do doctors take blood pressure readings?
Because blood pressure normally varies during the day and may increase during a doctor visit (white coat hypertension), your doctor will likely take several blood pressure readings at three or more separate appointments before diagnosing you with high blood pressure.
What is elevated blood pressure?
Elevated blood pressure is a systolic pressure ranging from 120 to 129 mm Hg and a diastolic pressure below (not above) 80 mm Hg. Elevated blood pressure tends to get worse over time unless steps are taken to control blood pressure. Elevated blood pressure may also be called prehypertension. Stage 1 hypertension.
What to do if you have chest pain?
If you also have chest pain, vision problems, numbness or weakness, breathing difficulty, or any other signs and symptoms of a stroke or heart attack, call 911 or your local emergency medical number. Both numbers in a blood pressure reading are important. But after age 50, the systolic reading is even more important.
How to stop high blood pressure?
Try the Dietary Approaches to Stop Hypertension (DASH) diet, which emphasizes fruits, vegetables, whole grains, poultry, fish and low-fat dairy foods. Get plenty of potassium, which can help prevent and control high blood pressure. Eat less saturated fat and trans fat. Decrease the salt in your diet.
What happens if your blood pressure is high?
If your blood pressure remains stubbornly high despite taking at least three different types of high blood pressure drugs, one of which usually should be a diuretic, you may have resistant hypertension.
What tests are done to confirm if you have high blood pressure?
Ambulatory monitoring. This 24-hour blood pressure monitoring test is used to confirm if you have high blood pressure.
What is the goal of blood pressure testing?
The goal in testing for low blood pressure is to find the cause. Besides taking your medical history, doing a physical exam and measuring your blood pressure, your doctor might recommend the following: Blood tests.
What to do if your blood pressure is low?
If it's not clear what's causing low blood pressure or no treatment exists, the goal is to raise your blood pressure and reduce signs and symptoms. Depending on your age, health and the type of low blood pressure you have, you can do this in several ways: Use more salt.
What is the best medicine for low blood pressure?
For example, the drug fludrocortisone, which boosts your blood volume, is often used to treat this form of low blood pressure. Doctors often use the drug midodrine (Orvaten) to raise standing blood pressure levels in people with chronic orthostatic hypotension.
How to keep blood pressure from dropping?
Eat small, low-carb meals. To help prevent blood pressure from dropping sharply after meals, eat small portions several times a day and limit high-carbohydrate foods such as potatoes, rice, pasta and bread. Your doctor also might recommend drinking one or two strong cups of caffeinated coffee or tea with breakfast.
Does low blood pressure cause symptoms?
Low blood pressure that either doesn't cause signs or symptoms or causes only mild symptoms rarely requires treatment. If you have symptoms, treatment depends on the cause. For instance, when medication causes low blood pressure, treatment usually involves changing or stopping the medication or lowering the dose.
Does alcohol lower blood pressure?
Alcohol is dehydrating and can lower blood pressure, even if you drink in moderation. Water, on the other hand, fights dehydration and increases blood volume. Pay attention to your body positions. Gently move from a prone or squatting to a standing position. Don't sit with your legs crossed.
