© Copyright 2020 City of Portland, Oregon, USA. See related specifications. Crown drip line or other limit of Tree Protection area. Welded Wire: 14 gauge galvanized welded wire with 2" x 4" openings attached to 6’ minimum “T”- steel posts, driven at least 2’ into ground @ 10 foot intervals or approved equivalent. Existing structures and/or existing secured fencing at least 3.5 feet tall can serve as the required protective fencing. 2. Tree protection. 3- No pruning shall be performed except by approved arborist. The intent of these e.  The following is prohibited within the root protection zone of each tree or outside the limits of the development impact area: ground disturbance or construction activity including vehicle or equipment access (but excluding access on existing streets or driveways), storage of equipment or materials including soil, temporary or permanent stockpiling, proposed buildings, impervious surfaces, underground utilities, excavation or fill, trenching or other work activities; and. Maintaining these protections through development will lessen undesirable consequences that may result from uninformed or careless acts, preserve both trees and property values, and reduce risks associated with damaged or destabilized trees. Jan 1 2018: DWG PDF: S2-01 : Vertical Curb Detail. A 6” layer of coarse mulch or woodchips is to be placed beneath the dripline of the protected. 1.2. Tree protection barriers must be made of 2.4m (8ft) high plywood hoarding or equivalent as approved by Urban Forestry. Tree preservation is site- speciic and other guidelines and protective measures also may be appropriate. D.  Changes to tree protection. The purpose of this provision is to ensure that logistical considerations are adequately addressed in order to prevent the need for changes to the tree protection measures during the construction process. Super Silt Fence PDF DWG. Figure 5b. TREE PROTECTION SPECIFICATIONS. Injure . Existing topography at 2ft contour intervals . D-4-2. o. 1. 2" x 6' steel posts or approved equal. The City Forester or BDS Director may conduct inspections during the course of project activity to determine compliance with this Title and confirm that tree protection zones are being maintained and root protection methods are effective. The BDS Director may require the proposed tree protection method to be peer reviewed for adequacy; reject the proposal if deemed insufficient to meet Subsection C.2.b, above; or require a performance guarantee per Section 11.10.060 in order to ensure the protection methods are properly implemented. Tree Protection. Tree and Hedge Protection Fencing Specifications; Bats and Development; A Guide to BS 5837; Knotweed - all you need to know; Urban tree planting; Land management; Arisings. 5478. crz (min.) A. British Standard BS5837 Tree Protection and Fencing Home / British Standard BS5837 Tree Protection and Fencing Advanced Arboriculture hold a comprehensive protective fencing stock which is available for purchase or hire and can be erected to a range of specifications including the full British Standard 5837:2012 detail. 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. Intent. means any intentional or negligent act, including various tree climbing practices, spiking, If construction traffic cannot be avoided within the CRZ: You can see the roots spread well beyond the Critical root zone. Existing structures and/or existing secured fencing at least 3.5 feet tall can serve as the required protective fencing. Performance Path. DBH refers to the tree diameter measured at 1.4 metres (4.5 feet) above the ground. New encroachments into the root protection zone are allowed provided: (a)  the area of all new encroachments is less than 25 percent of the remaining root protection zone area when existing encroachments are subtracted; and. Changes to the tree protection measures during the course of the development may be approved as a revision to a permit provided that the change is not the result of an unauthorized encroachment into a root protection zone, and the applicant demonstrates that the tree protection standards of this Section continue to be met. Cellular confinements systems are employed to enable all traffic types to use that area whilst ensuring that the tree roots of the tree remain protected. Remove tree protection fencing and other protection from around and under trees and plants. 1���s]�� �o�d�%{>G��r�%�,�*��Rx��C�����'ʼn m�,� "%{�@�$ ����0]��d)$ ,3��:: f Htt�9l �DI\�T1c����Dt4p�!�c�1@6s��)Ĭ@l�@��{���@Z��A���~�W�. temporary fence . 1. of trees, determine the critical root radius for each individual tree. The Tree Plan shall show that trees retained are adequately protected during construction using one of the methods described below: a. No person may refuse entry or access to a permitted development site to any authorized representative of the City who provides proper credentials and requests entry for the purpose of conducting a Tree Protection inspection. C.  Protection methods. All trees as defined by Surrey Tree Protection Bylaw, No 16100 must be protected during demolition. Forgot your username or password? TREE PROTECTION FENCING MUST BE AT LEAST 1.2M IN HEIGHT, AND CONSTRUCTED OF RIGID OR FRAMED MATERIALS (E.G. If roots are to be exposed for a period greater than 48 hours, the exposed area shall be covered with at least six inches of mulch and maintained moist during the course of construction until the area can be properly backfilled. SGN 2-03 861 0 obj <>stream A root protection zone is established as follows: (1)  For trees on the development site - a minimum of 1 foot radius (measured horizontally away from the face of the tree trunk) for each inch of tree diameter (see Subsection 11.80.020 C., Measurements): (2)  Street Trees – the City Forester may prescribe greater or lesser protection than required for on-site trees. Local Street Sections, call the tree protection fence shall be a minimum of four feet high (! A development activity protection fence be tree protection fencing specification of 2.4m ( 8ft ) plywood. Act, including structures, paved surfaces and utilities, may remain © 2020. Protected by ordinance may pursue an enforcement action or other remedy per Chapter 11.70 located at the edge critical... Retained shall be installed around the dripline of protected No existing irrigation, see specifications for the District Columbia... 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