Leyland Cypress Tree Spacing Explained

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Correct Leyland Cypress spacing is critical. Target height determines spacing distance. How tall do you need them to grow? If a 14′ row of Leyland Cypress trees will provide the privacy screen you desire, be sure and “TOP” them when they reach that height. Actually, you must let them grow a foot or so taller than the desired height, then just clip off the main trunk, or central leader.

On evergreen trees, they will be finished growing tall, and spend all their energy thickening out. More height above what you need is a disadvantage for several reasons. The first is that if the trees need to be sprayed for Bagworms at some point, and they are taller than they need to be, it will be more difficult.

A second disadvantage is during stress times, like a drought summer, or winter, the tree has to “decide” whether to send the moisture it does have to the upper limbs and truck or the lower limbs, it will always send the moisture to the top growth areas and starve out the lower limbs. Many people say their row of Leyland Cypress was doing fine, then “all of a sudden” this year they started showing brown on the lower needles. This is because the height reached the point relative to spacing that result in stress.

The “rule of fours” is that you space trees so that the target height is no more than 4 times the spacing between the trunks. Example: You need a 20′ tall row to block your neighbor’s house or windows, you could space as close as 5′ on center. That is provided you will follow through, and when they reach 21 or 22′ tall, top them at 20′ height. That means each tree will get the moisture from a 5′ diameter ground area without competition from the tree beside it.

Another advantage is there will be enough room for a strong 5′ diameter root system to secure a 20′ tall tree against the wind. The “zig zag” pattern is a super solution if you can surrender some “width” of your property for the privacy screen. Let’s take another example; a 30′ tall privacy screen.

For example to plant a single file row, you will space 8′ on center, 4 times 8′ spacing = 32′ max target height. If choosing to start with ten’ tall Leyland Cypress trees, they will be 4′ wide at planting time. That will leave them with 4′ of air in between each tree and waiting a long time to close together.

If you plant two parallel rows, with each at 8′ on center, but staggered there will appear to be a tree every 4′ you will have closure much quicker, yet still have the trees spaced for strength and low stress. In this case the first row should be 4′ from the property line, and the second row should be 8′ from the first.

If the planting site is tight on space, you could make the second row 6′ back from the first row. One note is that the appearance of a tree every 4′ is only when you are exactly perpendicular to the row. Also remember a ten foot Leyland Cypress tree may be 4 foot wide at its widest point, but also they get skinnier as they get tall.

In this situation, you still need the 8′ spacing based on the rule of fours, and the” zig zag” pattern will get you closure much sooner than a straight line row. If they decided on 12 foot trees, they would be 5′ wide at the widest point closure would come much quicker.

Trees should be spaced so the target height needed is no more than 4 times the distance between the trunks. If you need a 20′ tall row to block your neighbor’s house or windows, you could space as close as 5′ on center. That is provided you will follow through, and when they reach 21 or 22 feet tall, top them back to 20 foot height.

Two advantages are that: Each tree will receive the moisture from a 5′ diameter ground area without competition from the tree beside it. Another benefit is a strong 5 foot diameter root system can secure a 20′ tall tree against the wind.

The “zig-zag” pattern is a super solution if you can surrender some “width” of your property for the privacy screen. For example, someone needs a 30 feet tall privacy screen. If they use the rule of 4’s, and plant a single file row, they should space at 8′ on center, 4 times 8′ spacing = 32′ max target height. If you choose to start with ten foot Leyland Cypress trees, they will be 4′ wide at planting time. That spacing will leave them with 4 feet of gap between each tree would take a long time to close together.

If you plant two parallel rows, each at 8 foot on center, but staggered so there will appear to be a tree every 4 foot you will have closure much quicker, yet still have the trees spaced for low moisture stress and strength. For this example the first row should be 4 feet from the property line, and the second row should be 8 feet from the first. If tight on space, you could make the second row 6′ back from the first row. One note is that the appearance of a tree every 4′ is only when you are exactly perpendicular to the row. Remember a ten foot Leyland Cypress tree might be 4 feet wide at its widest point, but also they get much thinner towards the tip. In this situation, you still need the 8′ spacing based on the rule of fours, and the “zig zag” pattern will get you closure much sooner than a straight line row. If they decided on 12 foot trees, they would be 5′ wide at the widest point closure would come much quicker. My customers have been temped to let them grow because when they reach the target height, they will look great. That is the precise time to top them, once they get distressed and shed their lower needles nothing will make them green back up. Use and distribution of this article is subject to our Publisher Guidelines whereby the original author’s information and copyright must be included.

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Source by David Watterson

Take Advantage of the Flexibility of Photo Canvas Prints

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A photo canvas print, sometimes also known as a stretched canvas print, is usually printed utilizing one of your selected photos or pictures onto weaved canvas. The actual canvas will be stretched over a gallery quality framework and spacers are applied to guarantee the absolute best quality over the greatest time period. The flexibility of canvas prints and also the capability to add your own personal image causes them to be the most attractive methods to show pictures around the house and even in the workplace.

Family Photographs And Vacation Photographs

Making use of your own photograph or pictures permits you to show family pictures, or images of one’s favourite locations or functions. Canvas prints, printed right on to weaved canvas, have got fantastic colour clarity and remarkable photo reproduction so you’re able to enjoy really clear, realistic photos that may be shown proudly on your own wall. After all, family photos and vacation photos are not the only style of picture you might use either.

Custom made And Existing Paintings

Art work will come in numerous shapes, dimensions, and types. Should you design your own or get royalty free design and use a digital file that contains the image then you can definitely also use your much-loved art work and get this converted to a visually gorgeous bit of wall art work. Stretched canvas is the perfect material for presenting art work, whether it is of photographic level of quality or paint based.

Getting Creativity From Nature

You could think about printing images of one’s much-loved pets, plants, or perhaps your cherished car or truck. A lot of canvas printing businesses could help you with any kind of digital picture, although normally, the bigger the required canvas the greater quality and the bigger the image need to be to start with; this can help to make sure that you obtain the absolute best results once the canvas is fully gone.

Motion picture And Sporting Collectibles

Maybe you have your favourite film celebrity or sports personality? Find a very good photograph of them, copyright laws permitting, and get this printed on to a big canvas – fantastic for your home theatre or home fitness space. Perhaps movie or sports collectibles could be transformed into unbelievable looking canvas prints. Measurements differ substantially from smaller sized 35cm canvases up to noticeably bigger versions which measure several metres in width. Even so if you plan to but a canvas you’ll be able to choose the correct size and dimension to suit your needs.

Giving Canvas Prints As Presents

Image canvas prints not just are excellent bits of wall art work for your house. They may be presented as presents to other people or they may be utilized to help customise any kind of space and definitely help to make that space your own. Opt for a photograph or graphic that is certainly highly relevant to the area, the recipient, and any design theme that you wish to stick to and find the photography and select the proportions to suit.

Some other Photo Gifts

Along with canvas prints, you will find there’s wide array of additional photo gifts and photo items which could be customized to feature your own selection of picture. Additional photo items which work nicely in your home include photo blocks, that are fundamentally the modern-day equivalent of a framed image, along with stuff like folding screens, roller window blinds, as well as customized wallpapers. They could also assist add colour and character in any room of your house and even your work.

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Source by David Dobson

What is a Chassis Dynamometer?

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This article is the second in a series of three articles highlighting the basics of dynamometer testing. In this first article, “What is an Engine Dynamometer,” we reviewed the principle components of the water brake engine dynamometer and how they work. In this article we will look at the principle components of the chassis dynamometer (also known as a dyno).

A chassis dyno is a tool that lets the operator safely place a controlled load on a vehicle. With the use of a dyno, a vehicle’s primary power train components, including the engine, transmission, and differential as well as vehicle components such as the braking, cooling, and electrical systems, can be properly operated throughout a vehicle’s power and speed range. Deficiencies or errors in the assembly of the engine may be discovered before the vehicle is driven and a thorough assessment of the operating condition of the engine can be carried out. Basically the dynamometer is the last test of quality before a vehicle is put into service.

Chassis Dynamometer Construction

A chassis dynamometer has three major components: the roll set, the absorption unit, and the torque indication system.

Chassis dyno roll sets come in a variety of diameters depending on the application. An automotive chassis dynamometer will typically have smaller roll sets, while a large truck dyno will have a larger set. These dyno roll sets are placed in a specially designed frame and are either coupled directly to the dynamometer absorption unit or to a belt drive system. Dyno roll sets are available in both fixed and adjustable width versions which can accommodate a variety of wheelbases for testing multiple vehicles on a single machine.

The characteristics of a water brake absorber when used in a chassis dynamometer are very similar to an engine dynamometer. In addition to water brake absorbers, chassis dynos can also be equipped with eddy current and AC regenerative absorption units. An eddy current absorber uses electrical current to produce a load. Eddy current dynamometers require an electrically conductive core, shaft or disc, moving across a magnetic field to produce resistance to movement. Available in both air cooled and liquid cooled applications, eddy current chassis dynamometers provide quick response rates. Most eddy current absorbers use cast iron discs, similar to vehicle disc brake rotors, and use variable electromagnets to change the magnetic field strength to control the amount of braking.

Much like a water brake absorber, the housing of an eddy current absorber is restrained by a torque arm within the chassis dyno assembly that is connected to a load cell. AC regenerative chassis dynamometers use an electric motor/generator that is not only capable of assisting with bringing the vehicle’s drive wheels up to speed and act as a motoring chassis dyno, but is able to put power absorbed by the generator function back onto the electrical grid that powers the dynamometer.

In all cases, the absorption unit is restrained using a torque arm that is connected to a load cell. The force with which the stators are trying to rotate is measured by the load cell. By measuring the distance from the torque arm to the axis of the absorber, the amount of torque can be measured.

Torque = force x distance

So if we measure the speed, the amount of horsepower can be found with this formula:

HP = (torque x rpm)/5252

Chassis Dynamometer Operation

A vehicle or chassis is driven onto a chassis dynamometer and the vehicle is secured using straps or chains typically provided with the dynamometer system. The vehicle then performs a series of tests that mimic the operating conditions the vehicle would face during its intended use. These tests can be performed by an operator either inside or outside of the vehicle, or through an automated test depending on the control system supplied with the chassis dyno.

What makes up a Chassis Dynamometer System?

The chassis dynamometer itself is only one element of the overall chassis dyno system. In general, a dyno system consists of a chassis dynamometer plus a fuel measurement system, a room exhaust system, and a data acquisition and control system.

Fuel Measurement System

Fuel measurement systems are designed to monitor engine efficiency during a power run. A typical chassis dynamometer fuel measurement system works by initially measuring the total volume of fuel inside the storage tank prior to a test run. As a test run is performed, the system automatically calculates the amount of fuel being used and displays the monitored information on the dynamometer’s data acquisition system.

Room Exhaust System

The two most common types of room exhaust systems are hood and pipe systems. Hood systems are preferred because direct connection to the engine or exhaust system is not required. Hood fans pull make-up air into the room containing the dynamometer and removes both engine and room exhaust. Pipe systems can be powered by a fan to remove engine exhaust. When using a pipe system, a separate fan-powered room air exhaust system is necessary to pull make-up air into the room and to discharge heat, smoke and fumes.

Data Acquisition and Control Systems

Generally a dyno controller contains the dynamometer system’s temperature and pressure sensors. These sensors are contained within an industrial cabinet and are provided with quick disconnects. Data is gathered from the temperature and pressure sensors, and in many cases an ECM, and are merged with speed, torque and power measurements from the dyno and sent to the dynamometer system’s computer.

The computer in a data acquisition and dynamometer control system interfaces with the controller and the dyno and executes all of the embedded control operations. It’s also where new tests are run and reports are created, printed, and stored.

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Source by Sarah Simmons