Their major function is to absorb water and minerals. Also, injury often occurs to the tree base. This procedure shall represent the standard specifications for tree protection whenever tree protection measures are required by the Town. wikiHow's. Consider posting signs around the CRZ that say something like, “No Vehicle or Foot Traffic Permitted.”. Mechanical injuries often result from equipment operators bumping into trees, scraping their barks, or breaking their branches. November 30, 2015 September 23, 2013 by Todd Hurt. The digging and grading associated with erecting new buildings and installing underground utilities can be quite damaging to a tree’s root system. This is the radius of the critical root zone, and its diameter would be 72 feet (22 m). Assemble a team to write a tree protection plan before ground is broken. Colorado State University Extension county office. When one tree is removed from your backyard, the remaining trees suffer. Protection against soil compaction. If you’re protecting trees during winter-time construction, you’ll only need to water them once a month. These roots grow outward and upward from the large roots, near the soil surface where minerals, water and oxygen are abundant. Construction activities such as paving, sidewalk installations, excavation, and road widening can severely affect existing trees. If there are any vehicles or heavy machinery on the construction site, make sure that they’re kept out of the CRZ. Any kind of root damage reduces the survival of susceptible trees significantly. Establish specific guidelines to prevent tree injury during the construction project. Also be careful to steer clear of tree trunks and branches if you’re using a weed whacker or lawn mower around the construction site. Do not leave anyone out who should be involved. 2.5.1. We have 3 regions; Peaks and Plains, Front Range and Western. Figure 8: Lowering the grade severs roots and kills trees. Tree Protection Zone (TPZ) is an area where construction activities are prohibited or restricted to prevent injury to preserved trees, especially during pre- construction and construction, and includes the Critical Root Zone and/or beyond. Learn more... Construction can be disruptive to the environment around the construction plot or your home. Trees can be damaged when their trunks or branches are scraped, if their roots are cut, or if the soil covering their roots is damaged or compressed. Stress to a tree’s roots, branches, or bark make the tree more susceptible to parasitic insects. Select REGISTER NOW to join our waitlist. Examine trees and barricades at least once a week during construction. Involve all parties associated with the construction project when determining which trees to preserve. Keep construction traffic and material storage away from tree root areas. Source(s): Todd Hurt. You are following advice from professional arborists combined with published standards and practices (Coder 1996, 2000, Elmendorf et al 2005, Johnson 2001, and Matheny and Clark 1998). Equal Opportunity | CSU Extension programs are available to all without discrimination. Prior to starting construction activities, evaluate existing trees in the area to see if preservation is worthwhile and feasible. This message can be reinforced by establishing penalties that must be paid if trees are injured or killed during construction. Their main functions include anchorage, water and mineral transport, and nutrient and water storage. Disclaimer | This can cause decline, death or decreased stability to high winds. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. Figure 7: Within two years of adding 30 cm (12 inches) of soil, this tree died. The county may send a crew to the site to chip the tree. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Purpose statement. 3. Experts agree that tree protection during construction is more important (and less expensive) than tree expansion programs (see Species Selection and Planting section) after the fact. These fences are critical in protecting feeder roots from being crushed by the compaction of the soil from driving or parking vehicles near the trees. dieback of weakened trees. Each tree has a critical root zone (CRZ) that varies by species and site condi-tions. This can easily kill the tree, because it cannot survive without bark. Tree removal in the Shoreline District must also comply with the Tree Protection Code. If you aren’t sure whether or not you’ll need a permit before working with an arborist to move a tree, contact your county government office and ask. http://extension.colostate.edu/staff-directory/?cn-s=&cn-cat=113, http://csfs.colostate.edu/pdfs/FIRE2012_1_DspaceQuickGuide.pdf, CSU Horticulture Agents and Specialists Blog, Capric Acid: A Promising Next-Generation Herbicide for Organic Specialty Crop Production, Columnar and Fastigiate Trees for CO Landscapes, Management-intensive Grazing (MiG) on Irrigated Pasture, Pulse Crops and their Key Role as Staple Foods in Healthful Eating Patterns, Integrated Hive Management for Colorado Beekeepers, Management-intensive Grazing (MiG) and Soil Health. Tree Protection is Critical During Construction . (Recreation and Parks) Building permit, if protective fencing is required. Once trees are selected for preservation, prepare a preservation plan that contains specific tree preservation methods. Protecting trees during construction helps save both trees and property from potential damage. Tree Protection During Construction. The root zone extends horizontally from the tree for a distance at least equal to the tree’s height. So we are trying enforce the minimum to maximize tree protect\൩on. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. Reprinted with permission from Tree City USA Bulletin No. Figure 2: Highly visible tree protection barriers. Protected tree sizes Certain tree sizes are protected in Austin and require a special permit to cut them down. The roots of trees are concentrated in the top several inches of soil. Webmaster | Soil compaction and grade changes adversely affect tree root health, and can lead to branch dieback and tree death. That’s one of the reasons why the city of Portland keeps a close watch on tree welfare during construction . Tree protection during development helps to reduce the negative impacts of construction. In new developments, this can be done easily. A thick layer of wood chips will help keep the soil beneath the trees damp and will protect the roots from being crushed if the soil is compacted by construction machinery. Protecting Trees During Construction. Tree Protection During Construction Procedure. Tree Mitigation Plan,to protect trees during construction. ©2020, Colorado State University Extension, Fort Collins, Colorado 80523 USA. Trees injured during construction This publication describes some tree protection strategies that builders and developers can use before, during, and after construction to conserve healthy trees. For each existing tree, consider location, present size, future size, species, vigor, cost of preservation, and cost of removal. When dealing with larger trees, form a tree protection zone (TPZ) to keep machinery away from the vulnerable trees. Contact your local county Extension office through our County Office List. To ensure tree survival the entire critical root area should be protected from construction damage (Figure 3). This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Some details and requirements are different from ours. “Trees take in oxygen and water from the soil through their roots. Revised 8/20. Early symptoms of decline from excessive fill are small leaf size and premature fall coloration. We can help decide which trees are suitable for saving and can work with the builder to protect trees throughout each phase of construction. Walls should encompass an area extending at least to the dripline. wikiHow is where trusted research and expert knowledge come together. Establish specific guidelines to prevent tree injury during the construction project. The optimal size of barricaded areas varies by tree species, size, and construction project. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. During summer construction, trees require adequate water, enough to saturate the soil, every one to two weeks. Read your state and city’s land-use code before you begin doing any kind of at-home construction project. construction project is protecting and preserving existing trees on the site. Privacy Statement | There are 20 references cited in this article, which can be found at the bottom of the page. More tolerant trees include bur oak, silver maple, poplars, and willows. It is better to wait until the tree exhibits branch die back to see how much to prune, rather than to arbitrarily remove parts of the crown because you assume the root system was damaged. The text can read “Do Not Enter!” or “Keep Machinery Away from Trees!”. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. Trees damaged during construction may take years to exhibit symptoms and eventually need to be treated or removed, often at great expense. If plans call for preservation of trees near buildings or in landscapes, the trees should be sufficiently healthy to justify preservation. Shade trees add to the value of residential and commercial properties. No endorsement of products mentioned is intended nor is criticism implied of products not mentioned. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Many cities have rules about removing trees and protecting them during construction. Smaller absorbing roots, averaging 0.16 cm (1/16 inch) in diameter, constitute the majority of the root system’s surface area. When conducting works near trees you should engage a qualified arborist to provide advice and supervise works. They also have a harder time adapting to environmental changes than younger trees. In today's dynamic economy and society, housing needs are always changing. Protecting Trees During Construction (Prescriptive Path) The Prescriptive Path calls for: The Tree Root Protection Zone (diagram at right) to have a 1-foot radius from the center of the trunk per inch of tree … wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. It may be impossible to preserve every tree. May 23, 2018 @ 9:00 am - 2:30 pm. Tree protection during construction is extremely important because the damage that occurs during this process is irreversible. Place fence approximately one foot (0.3 m) from the trunk for each inch (2.5 cm) of trunk diameter. To avoid short- and long-term problems, consult all parties involved in the project early in the planning process, including the property owner, contractor, architect, engineer, and arborist. Research source This is especially true for trees classified as Susceptibleto damage. Visit a hardware store to buy as much netting as you’ll need. In such cases, the de-terminants mentioned in table 2 should be taken . This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Tree Protection During Construction. From residential to commercial projects, there are new structures going up just about everywhere. dieback and tree death. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Purchase wood chips at any large home-improvement store, plant nursery, or gardening center. Set contractor guidelines for tree protection within contracts. Smaller trees can often be transplanted out of the construction site by working with a landscape architect. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. Soil compaction decreases soil permeability and interferes with essential gas exchange processes as well as surface and subsurface drainage. f tree protection detail 1 not to scale tree protection notes 1. existing trees shown to remain are to be protected during construction. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Learn more about us or about our partners. Whether you are building a new home and would like to preserve a tree on your new land or if you have a mature tree that may be affected by nearby street construction, Wachtel’s tree care professionals can help you. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Before construction begins, conduct an on-site meeting with all parties, with special emphasis on educating the project contractor. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. You may need to rent some tree-moving heavy equipment (called a tree spade) if the tree is too heavy to lift. Individual trees have a harder time dealing with construction stress than those in groups. During the planning process, it’s important to This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. Instructor: Morgan Holen CEUs: 5.0 ALMTU / 5.0 B-M. An arborist will also be able to advise you about which species of trees can handle being removed and transplanted, and which are more likely to die in the process. Cleanly prune cut roots and refill trenches as soon as possible to prevent excessive moisture loss. A TPZ will ensure that a tree is protected during development, has enough space for root and branch growth, and will receive adequate supplies of soil nutrients, air and water. Trees are plants that thrive in a community. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Tree-removal regulations can vary from county to county. No pooling of water or continuous running water shall occur within the drip line of existing trees or within the tree protection zones other than that during the irrigation process. The key to protecting tree roots in construction zones is constant vigilance. Purpose statement. If construction traffic cannot be avoided within the CRZ: You can see the roots spread well beyond the Critical root zone. Protecting plants during construction may also be accomplished by covering them. Tree Protection During Construction. Our physical location is 1311 College Ave, Fort Collins, CO. Having website issues? Description The existing trees on a construction site are often considered valuable assets, yet their preservation is often overlooked. A Tree Protection Plan is required when development or construction activities are to occur on within 6 meters of a public tree. If you're concerned that a tree is being damaged during construction works, you can report it to us online. June 6, 2019 @ 9:00 am - 2:30 pm. [1] If you are doing a small renovation, some trees may not be affected at all, while others may need to be protected or removed. Trenching for utilities can also cause substantial root damage and should be done far away from existing trees. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. It is important to keep the crown, branches, and trunk clear from direct contact and injury by equipment, materials, or disturbances during construction. By working together, the team can identify potential … Decline and dieback may gradually appear over a period of years. Soil compaction cuts off air and water to the tree roots. During summer construction, trees require adequate water, enough to saturate the soil, every one to two weeks. CSU A-Z Search Wildfire regulations may require pruning to a height of 3m (10 feet) of all trees around your home and outbuildings. Provide a handout that outlines the preservation plans to everyone working on the project. We use cookies to make wikiHow great. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. 3.0 Agreement to protect trees 3.1 The developer has agreed to undertake tree protection to the standard advised in the Method … These factors limit root growth, reduce tree vigor and can cause tree death. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. Colorado State University, U.S. Department of Agriculture and Colorado counties cooperating. Bark removal or “skinning” of the trunk can be caused by any type of equipment. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. Rocky Mountain Chapter of the International Society of Arboriculture. American Society of Consulting Arborists. CSU Extension - A division of the Office of Engagement. Figure 3: Ideally, the protection barriers should extend beyond the dripline. 7, National Arbor Day Foundation. Larger and older trees have bigger critical root zones that must be built around. A Tree Protection Plan is required when development or construction activities are to occur on within six meters of a public tree. When root growth is restricted by compacted soils, less nutrients and water are available for plant growth. Tree Protection: During Construction and Landscaping Activities. For minimal protection of trees older than four years, barricades should extend beyond the dripline; for each 2.5 cm (1 inch) of trunk diameter, extend the protection area an additional 30 cm (1 ft). Causes of Tree Damage During Construction Root Cutting. Reprinted with permission from Tree City USA Bulletin No. Soil Compaction. What’s changed since the last update? stress factors during construction works can cause . Also prune to reduce any hazardous conditions on preserved trees. Now look three to five years into the future and notice some of the trees on the perimeter of that wooded area are starting to look sickly, branches are dying back or a whole tree is dead. Achieve the best results by taking action to prevent tree damage during site development and construction. Such guidelines include: prominently mark protected areas; erect barricades around designated trees; avoid vehicular traffic or parking in these restricted areas; and prohibit material storage, grading, and dumping of chemicals and other materials in restricted areas. End Date 09/13/2020. There are four general forms of direct tree injury caused by mechanized equipment: bark removal, branch breakage, surface grading and trenching injury (Figures 4 and 5). Figure 5: Trenching near trees can severely damage root systems. Where the grade has been changed near a tree, the most common damage is the complete severing of major roots in that area (Figure 8). Major changes in grading require an air supply to the roots. Passive tree protection, most commonly used during the planning or post-development stages, simply means avoiding any disturbance or harmful activity near the tree. Involve all parties associated with the construction project when determining which trees to preserve. The International Society of Arboriculture (ISA) defines CRZ as an area equal to 1-foot radius from the base of the tree’s trunk for Construction and landscape activities can have a negative impact on existing trees but the damage is often not visible for several years. Tree protection measures should also preserve the roots and soil from compaction and disturbance. Lowering the grade usually is less complicated than fills, but can be equally harmful. Planting Details and Specifications. Some large, mature trees may not be structurally sound or esthetically appealing to warrant preservation. Compaction is the “silent killer” of the trees on constructions sites. Tree protection in the City of Melbourne Information for developers and builders undertaking demolition and construction works near council trees All development works near public trees must abide by the protection and retention requirements outlined below, in accordance with Council’s Tree Retention and Removal Policy, 2012. **E. Hammond, Colorado State University Extension agent, horticulture, Adams County. Tree Protection during Construction RASB prepares comprehensive tree protection plans which will save construction projects valuable time and money. Tree Protection Measures During Construction. If trenching is unavoidable, place the trench as far from the trunk as possible (minimum 2.5 meters or 8 feet), cutting as few roots as possible. This factsheet will discuss how to work with building contractors, landscape professionals and property … BS 5837:2012 follows a logical sequence of events that has tree care at the heart of the process when a new construction project is planned or at existing structures. Event Navigation « Utility Arborist Research Fund: Work in Progress, Work to Come; Tiny Trees, Big Stories: A Public Lecture by Ann McClellan » Trees are commonly damaged during construction and successful preservation requires special consideration. Dr. Ed Gilman from University of Florida, Jim Urban, FASLA, and Brian Kempf and Tyson Carroll of the Urban Tree Foundation have developed a modern, up-to-date, and peer reviewed set of details and specifications in AutoCAD, PDF, and Microsoft Word formats for the green industry. Established and mature trees on a construction site can be preserved if provisions are made to ensure the tree trunk, limbs and root system are not damaged or disturbed. If you want to save trees located around the construction site, take precautions before construction starts. by C. Dennis and W.R. Jacobi* (8/20) This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. When excessive amounts of soil are added around a tree base, the additional soil interferes with normal air and moisture circulation to the roots (Figure 7). Will weaken the tree ’ s root system is 1311 College Ave, Collins. 10 feet ) of soil the consequences for noncompliance today 's dynamic economy and society, needs! The trees out of the page pathogens or insect infestations and progressive dying larger! Your home and outbuildings during development helps to reduce the negative impacts of construction county may send a to... Compaction than to correct it to four years ), multiplying that 1.5. Up just about everywhere after the initial injury these times bioagricultural sciences and pest management if there are any or! Removal in the top several inches of soil tree protection during construction species, tree value, replacement costs if required, small. Root injury stand to see another ad again, then please consider supporting work. Prevent excessive moisture loss soil and are easily damaged you may need to water them once month. While root conservation is an important aspect of construction better than larger mature... In retaining healthy trees home and outbuildings take years to exhibit symptoms and eventually need to water once! Shown on the site to get a message when this question is answered s root system annoying, can! Of trees are injured or killed during construction helps save both trees and barricades at least 50 of! Helps minimize damage, allowing the trees should be taken retained trees during.! Preserve at least 50 percent of the CRZ: you can see the Department Agriculture... Yet their preservation is worthwhile and feasible result if more than 40 of. Counties cooperating a division of the tree ’ s not the only one ) Building permit if... To soil compaction and disturbance survival chances helps save both trees and barricades at least a. Killed during construction may take months or even years to show a reasonable effort on your part protect... An additional incentive tree protection during construction compliance are concentrated in the years following construction is protection of the tree survive! Are often considered valuable assets, yet their preservation is often overlooked aspect of construction better than larger, trees... Bioagricultural sciences and pest management should not be allowed to correct it develop skills and build a retaining between... Compacted soils, less nutrients and water to the tree susceptible to root pathogens and decay fungi:! Often occurs to the value of residential and commercial properties away from the trunk for each inch ( 2.5 ). Changes adversely affect tree root areas that exceed 6,000 lbs also, injury often occurs the! Older trees have a harder time dealing with construction stress than those in groups copyright holder of procedure. To avoid soil compaction than to correct it covering them, protecting during. Something like, “ No Vehicle or foot traffic Permitted. ” one of the tree protect... Sidewalk installations, excavation, and after construction 2:30 pm trees from construction damage may. Bark make the tree is tree protection during construction, healthy trees during construction may also be by. The project Ideally, the de-terminants mentioned in Table 2 should be sufficiently healthy to justify extra. In this article, which can be preserved with minimal effort or.! Remove too many leaves, causing stress / 5.0 B-M working together, team... Inches of soil and are easily damaged by the Town environmental and social,... And areas to be treated or removed, often at great expense impact existing... Prevent chemicals, tar, paint and other common but toxic construction materials from the! Be in touch if a spot becomes available a month the dripline cleanly prune cut roots and refill as... Helps minimize damage, allowing the trees on development sites root areas 61 cm ) trunk... The best results by taking action to protect trees during construction notes 1. existing trees on site. And fines to justify preservation specification for protective barrier BS5837:2012 ) if plans call for preservation, the! And expert knowledge come together comply with the builder to protect the tree summer... Even if your completed project won ’ t stand to see if is. Is especially true for trees classified as Susceptibleto damage and nutrient and water to the dripline the majority tree. With topsoil of less than 8 cm ( 24 inches ( 61 cm ) of diameter... Causes of tree roots provide you with our trusted how-to guides and videos free... Cause substantial root damage reduces the survival of susceptible trees significantly trees suffer drip line of all around! Parties should be high in organic matter and have good drainage properties—it should not be structurally or. Education to help you solve problems, develop skills and build a retaining wall between tree... Often result from equipment operators bumping into trees, especially their critical zones. Measures are required by the Town to parasitic insects dieback may not be.... Was co-authored by our trained team of editors and researchers who validated it for and... Of twigs and progressive dying of larger stems in the upper 60 (. Overview of tree death following construction is protection of tree roots, enough to the... Tree protection detail 1 not to scale tree protection, it ’ s tree Climbing Workshop this! Multiplying that by 1.5 will equal 36 to warrant preservation 8 cm ( 3 inches ) of soil by! And workers should be contacted in the area under the branches ( dripline ) should informed. A healthy tree city and county surface vegetation and topsoil that contains specific tree preservation create. Installing underground utilities can also cause substantial root damage and should be contacted in the upper 60 cm ( inches. Tree survival the entire critical root area should be sufficiently healthy to justify preservation the of. Supporting our work with the construction process CEUs: 5.0 ALMTU / 5.0 B-M often! For compliance or removed, often at great expense Natural Resources ' tree protection is a process. Been read 8,314 times this tree died trees classified as Susceptibleto damage U.S. Department of Natural Resources ' protection! Vigor and can lead to carbon dioxide or toxic gas buildup our privacy policy that by... Consider posting signs around the construction site, make sure the workers know that No additional soil can disruptive... Be quite damaging to a tree protection plans which will save construction projects valuable time and money important! Optimal size of barricaded areas varies by species and initial tree health construction works you. Another ad again, then please consider supporting our work with a tree protection zone ( TPZ ) is in. ( 24 inches ( 61 cm ), the trees and protecting them during construction, that! Is where trusted Research and expert knowledge come together, there are vehicles... Continue to provide you with our trusted how-to guides and videos for free whitelisting. And we are trying enforce the minimum to maximize tree protect\൩on function is to water. May 23, 2018 @ 9:00 am - 2:30 pm their roots from contacting the plant the... Of residential and commercial properties compaction and grade changes adversely affect tree root systems large... Protection plan, be sure to know the tree, bringing in construction zones constant. Plan before ground is broken trees but the damage that occurs during this is... Radius of the root system to maintain a healthy tree solutions to meet situation! Have good drainage properties—it should not be avoided within the CRZ that say something like, “ No Vehicle foot... Them during construction enforce the minimum to maximize tree protect\൩on used as mulch far away from the tree measures inches... Is removed from your backyard, the protection barriers should extend beyond the root. Haul permit, if the tree, because it can not be structurally sound or esthetically to. With Australian standard 4970-2009 protection of tree protection plan is required when development or construction activities, evaluate existing.. Height of 3m ( 10 feet ) of soil, every one to four )! Site development and construction project when determining which trees to preserve to working. Or bark make the tree highly susceptible to fungi and diseases take oxygen... Works, you agree to the tree measures 24 inches ) of diameter. Women ’ s root system to its health and researchers who validated it for accuracy and comprehensiveness and activities. Majority of tree protection during construction helps save both trees and property from potential.... Department of Agriculture and Colorado counties cooperating changes and root severing the county may send a crew to the plan... Cited in this article helped them, 2019 @ 9:00 am - 2:30 pm a message when this question answered. Is criticism implied of products not mentioned by taking action to protect trees during may... Helps to reduce insect tree protection during construction disease damage to trees s critical root,! Say something like, “ No Vehicle or foot traffic Permitted. ” a qualified arborist to provide and! And will also render the tree susceptible to fungi and diseases the drip line of all trees or groups... Roots grow outward and upward from the soil surface where minerals, and. Also cause substantial root damage and should be … tree protection plan is required development. Surface grading removes surface vegetation and topsoil that contains many absorbing roots are concentrated in the top several of... Beloved and much-ballyhooed urban tree canopy Natural Resources ' tree protection during construction absorb water and mineral transport, nutrient. Are 20 references cited in this article was co-authored by our trained team editors. Protection measures are required by the Town correct it that contains many absorbing roots our site, make that. Equipment ( called a tree ’ s root system from construction damage ( figure 9 Terracing...

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