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HomeMy WebLinkAboutSite Drainage Systems N r • SECTION 02400 SITE DRAINAGE SYSTEMS, PART 1 : GENERAL 1. 01 PROJECT MANUAL All requirements of the Project Manual shall apply to and govern the work of this Section. 1. 02 SCOPE Furnish labor; material, equipment, special tools , super- _ vision and services required to furnisI and install all Site , Drainage Systems (Manholes and Catch Basins) as indicated, .. noted •and detailed on the drawings and specified herein. This work shall consist of the construction, re-construction, or adjustment to grade of manholes , inlets', and catch basins in ' accordance with these specifications and in reasonably close ' conformance with the lines and grades shown on the plans or established. by the Architect. - • , 1. 03 RELATED WORK SPECIFIED ELSEWHERE Section 02220 - Excavating and Backfilling ii 02210 - Site Grading 1 _ 03300 - Cast-In-Place Concrete ! 04200 - Unit Masonry . • 1. 04 INDUSTRY STANDARDS A. Publications of the following agencies , institutes , associ- ations , and societies are referred to in this Section. 1 . Indiana State Highway Commissions, I . S .H .C. -= 2 . American Association of State Highway Transportation ' Officials , A.A. S .H.T.O. - T - 22'; M-170; M-199 PART 2 : PRODUCTS 2 . 01 MATERIALS - A. Materials shall meet the requirements specified in the - • following sub-sections of the I . S .H.C. Specifications . • 1 . Clay or Shale Brick 904 . 01 2 . Concrete Brick 904 . 02 — 3 . Concrete Masonry Blocks I 904 . 03 4 . Joint Mortar 91.2 . 17 or 905 . 03 _. _ 5 . Joint Filler 905 . 01 -,16 .- Castings 909 . 05 7 . Reinforcing Steel 909 . 01 .. 8 . Concrete 702 _ 9 : Non-Reinforced Concrete Pipe 906 . 01 -- 10 . Reinforced Concrete Pipe • 9.06 . 02 • 11 . Clay Pipe 906 . 08 12 . Hydrated Lime ' ,i 912 . 04 ._ 13 . Water 912 . 01 - B. Concrete inlets or catch, basins may ' precast units comply- , ing with requirements set out in 912,. 0?6 , I . S .H . C. n i E< . • 3.02 MANHOLE AND CATCHBASIN CONSTRUCTION A. The provisions of I .S,H .C . - 2.03 . 14 shall apply to the -construction of the items listed in this specification . B . Excavation .shall be to the established bottom of the foundations .. The finished surface shall be firm and smooth . 'If soft or yielding spots are encountered at this elevation, they shall be removed, backfilled with suitable material , and . tamped .into place . If rock is encountered at the bottom elevation, the excavation shall be carried down 6 inches further and backfilled with approved' material tamped to the • required elevation. ' C. Concrete construction shall conform to the requirements for structural concrete . Masonry shall' conform to the require- ' ments for the respective type. Exposed corners of concrete " shall be rounded to a 1/4 inch radius . D. Frames for castings and bearing plates for manholes shall be set in full mortar beds and secured as shown on the plans or as otherwise _approved. The mortar shall be composed of 1 part cement to 2 parts No. 14 sand, by volume . Castings shall be set to the finished pavement elevation so. that subsequent adjustments will not be necessary. E . ' Iron hood-traps in catch basins shall be installed in walls as shown on the plans and so placed that a 6-inch seal is • formed.. Joints between hoods and walls shall be made ' gas- -tight with cement mortar . F. Mortar for laying brick and masonry units shall be composed of 1 part masonry cement and 2 parts mortar sand. Mortar • for plastering may be the same or it may be composed of 1 part of a combination of Portland cement and hydrated lime and 2 parts mortar sand. The lime shall not excedd 10% of the cement . In any case, proportioning shall by by volume . _ Ingredients , except water, shall be dry mixed, after which water shall be added to bring the mortar to• a stiff paste and mixing continued until a uniform mixture results . G. Required plaster coats on the inside and outside sh'all'' be at .. least 1/2 inch thick and shall be smooth, clean, and water- tight. H . Inlet and outlet pipes shall extend through walls a suffi- cient distance to allow for connections' on the outside and the concrete or mortar carefully placed around them to pre- _ . vent leakage around their outlet surfaces . Unless other- -- . • wise shown, the inside ends shall be flush with the inside • walls . The pipe shall be of the same size and kind as that with which it connects on the outside . I Where castings are adjacent to or are surrounded by cement concrete construction, each casting shall be entirely separa-' ted from the concrete by a preformed joint filler no less than 3/8" thick. The cost of each joint, including the material, shall be included in the Contract Price . J . If any manhole is constructed within the pavement area or within an area that may be paved at some future date , the height of the casting used shall be based on the depth of pavement constructed or proposed and a bearing plate for such casting will also be required. • K. If any manhole is constructed outside the proposed pavement area and outside an area that may be paved at some future date , the height of the casting used shall be at least 7" and a bearing plate for such casting will not be required. . L. Only competent masons shall be employed in laying units . - Brick or other masonry units shall be laid in courses with full and close joints of mortar and finished properly as the work progresses . No joint shall exceed 3/8" in width . All units shall be wetted thoroughly immediately prior to being laid. Broken or chipped units will not be permitted in the face of the structure . No spalls or bats shall be used except for shaping around irregular -openings or where necessary to finish out a course . As nearly as practicable , adjoining courses shall break joints one half unit. Courses shall. be leVel except where otherwise necessary . If brick is used, at. least 1 course in each 7 shall be composed of headers . M. The pipe used in pipe catch basins shall be of the bell-and- . spigot type . 0 . Material excavated for the structure shall, if suitable , be utilized as backfill . If in excess for that purpose , the excess shall be used in embankment where locations are avail- able or otherwise disposed of as directed. When finally ac- cepted, all structures shall be free' from any accumulation of 'silt, debris , or other foreign matter of any kind. • P . When precast concrete inlets or catch basins are used,'' a minimum depth (4-inch) layer of "B" borrow shall be used under each unit for ease in positioning . This "B" borrow will not be paid for directly, but the cost thereof shall be included in the cost of the Contract. • .Q . Holes may be formed or field cut in precast inlets or catch basins to receive pipe structures . The annular space between the pipes and the precast unit shall be filled with grout com- posed of 2 parts of No. 14 sand and •1 part of Portland cement, or other approved material . Holes formed or cut in the wrong . place shall be plugged satisfactorily . Additional holes that • may be required shall be cut as. directed. The cost of the work to form, cut, or plug holes arid, to grout pipe into the precast • unit will not be paid for directly, but the ,cost thereof shall ha i nr1 nripri in tha nnct- of thra ('nntrar-t- _ --j • • R. Grade and location adjustments to precast' inlets and catch basins caused by unforeseen conditions shall be handled as • • if the units were being cast in place . Any additional ad- justments required due to precasting will not be paid for directly, but the cost thereof shall be included in- the • cost of the . inlet or catch basin. S . Excavation, backfill, reinforcing steel , disposal of -sur- • face material, and .other miscellaneous items needed to com- plete the work shall be included in the cost of the Contract. T . • +912 .06 Precast Concrete Units Not Otherwise Covered. These units shall be cast in substantial permanent steel forms . Structural concrete used shall attain a minimum 28-day ' compressive strength of 30.00 - psi. as determined in. accordance with AASHTO T 22 . When air entrained concrete is specified, ,it shall have an air content of from 5% to 8% by •volume . The precast units shall be cured in accordance with AASHTO M 170 . , Water absorption of individual cores taken from such units shall not exceed 9% . Additional rein- . forcement shall be provided as needed to handle the precast • • • • • . SECTION 02485 ' LANDSCAPING, LAWNS AND PLANTING BEDS . PART 1 : GENERAL . 1. 01 PROJECT MANUAL - _ All requirements of the Project Manual shall apply to and govern the work of this Section. 1. 02 SCOPE The work of this Section consists of the inspection and repair of the final subgrades and finish grading in lawn ' and planting areas , furnishing and spreading topsoil, soil treatment , lawn and planting bed construction, protection ' and maintenance , replacement of lawns and planting during the guarantee period, and related items to complete the work as shown on the Drawings and/or as herein specified. 1. 03 DESCRIPTION OF WORK A. The extent of the landscape work on the •planting areas is shown on the Drawings , and lawn areas are specified herein. • B. The intent of this section is to have ' complete lawn areas • and planting with an acceptable stand. of . grass , and . - healthy thriving planting beds . } 1. 04 QUALITY ASSURANCE. . , Design modifications may be made only as necessary to meet - field conditions and to ensure correct alignment and relation- • ship of the 'work, and only as acceptable to the Architect. . 1. 05 SUBMITTALS A. After acceptance of the bid and prior to placement of any materials required herein, Architect shall be notified of the sources of the materials supplied. • ' B. The contractor shall notify the Architect of the 'source of the topsoil to be furnished. C. The contractor if requested , shall take two (2) represent- ative samples from the topsoil source and submit them for soil sample tests . The tests shall be made by a -State or commercial laboratory using methods approved by the . Association of Official Agricultural Chemists or the State Agricultural Experiment Station. Such analysis will be • paid for by the contractor. Delivery 'of topsoil may be made . after approval of the analysis by the Architect. 02485-i D. If the pH range of the topsoil is not. between 6 . 0 and 6 . 5 , it shall be amended 'by the contractor , at his own expense , to bring it within these limits according to • the guide below or he may select another source and submit new samples for analysis at his expense . 1. If the pH level is below 6 . 0 , add ground limestone proportionately at the rate of 2-1/2 lbs . per cubic yard to raise the pH one full point: , 2 . If the pH level is above 6 . 5 , add aluminum sulphate • proportionately at the rate of 2-1/2 lbs . per cubic - yard to .lower the pH one full point. 1 . 0,6 DELIVERY, STORAGE AND HANDLING - A. Deliver materials to the project in such quantitites and at such times as to insure the continuity of the instal- . lation. B. Existing topsoil on site shall be removed as specified , in Section 02100 . This soil will be reused - for fill in the lawn and other planting areas . It may only be used in- the top 6" of the lawn areas where so directed by the • - Architect. . , C. All seed shall be furnished in -sealed standard containers'. , D. Seed may be mixed by a dealer or by an approved method on the site. If seed is mixed on the• site , a dealer ' s • guaranteed analysis for each variety must be furnished. E. Individual varieties must be delivered in separate unopened original containers when seed is mixed on the site. . . , .F. If seed is mixed by a dealer , the dealer's guaranteed . statement of composition of mixture and percentage of purity and germination of each variety must be furnished. G. All plants shall be packed, transported, and handled' with' . • the upmost care to insure adequate protection against injury. Each shipment shall be certified by State and . ' Federal Authorities to be free from disease and infes- _ • . • tation. . . H. ,Plants damaged during delivery', storage or handling will ' be replaced by the contractor without cost to the Owner. _ . . 1. 07 JOB CONDITIONS ' A. The contractor shall be notified in writing when other 'divisions of the work have progressed sufficiently to commence work on the lawns . . B. The contractor shall inspect, the prepared subgrade:to • insure the elevation is parallel with• thee desired finished . - grade , and that the subgrade i.s • unifor.mly' ; cbmpaced. Repair any defects . Subgrade which has been .'contaminated by _ ' B. Fertilizer: ' , . 1. Lawns : Fertilizer shall be a -complete commercial i ' fertilizer containing , in available form, equal parts . by weight of Nitrogen, - Phosphorus , and Potash .(example 10-10-10) . It shall be free-flowing and suitable for - application with approved equipment., delivered to the • site in bags or other convenient containers , each fully labeled conforming to State fertilizer laws , • and bearing the name, trade name, or trademark and • • warranty of the producer. J . 2 . Planting Beds : Fertilizer shall be a complete corn- - mercial fertilizer containing , in available form, parts 'by weight, of Nitrogen, Phosphorus , and Potash , • equal to (1-2-1) or (1-3-1) depending on the soil • . conditions.. ' C. Peat , Moss : shall' have an acid reaction of about 4 . 5 pH, ' and a, water absorption capacity of 1100 to 2000 percent • by weight., , • i 2 . 03 SEEDING . A. Lawn Seed: Grass seed shall be fresh , clean , and new , crop seed composed of the following varieties mixed in the proportion by weight as shown, and testing the minimum percentages of purity and germination .indi•cated. All seed used shall be labeled in accordance with U. S . Department I • • , of Agriculture Rules and Regulations under the Federal _ Seed Act in effect at the time of the installation of the ' work involved under seeding operations . See that is wet ' , or moldy or that has been otherwise damaged in transit • or storage will not be accepteable. ' _ B. Seed Mix: Variety Prop. by .Weight Marion Kentucky Bluegrass 44% . Pennlawn Creeping Fescue , 19% Delta Kentucky, Bluegrass 11% • Creeping Red Fescue 11% Redtop- 10% ' • Weed Seed not to exceed 1% by weight 0 . 3% Other than weed and pure live seed maximum 4 . 7% • • Total 100°A_ _ _ .___ _ _ _ '_ , PART 3 : EXECUTION 3. 01 PERFORMANCE A. After the subgrade has been determined to be satisfactory and the .contractor has been notified that work has pro- ' ' gressed• sufficiently , the placement of the topsoil , to the depth and. to finished grade , may begin. , B. The topsoil shall be spread evenly on the subgrade and - li•ghtly •.compacted so that the average depth is 6" . All uneven surfaces shall be raked until a uniform surface is established. All stones over 1" -shall be raked out ' and removed from the site. The areas to be seeded shall be brought to finished grade and smoothed. , Allowance for • - • settlement shall be made . ' C. The finished grade shall be maintained through completion . ' of the lawns . The contractor shall be responsible for !_..' notifying ..others and insuring that this final grade is' ' -not disturbed by contractors working at the site.• • ; • • D. When seeding is specified, after fertilizer and lime have been applied and immediately before any seed is to be sown, the •ground shall be scarified as necessary and shall be raked until the surface is smooth , firable and , of uniformly fine texture . Lawn areas shall be seeded evenly with a mechanical spreader at the rate of 4 lbs . per 1 , 000 square feet or area , lightly raked , rolled with a 200 lb . roller and watered with a fine spray . • E. - Remove all contaminated subsoil ' from the planting beds and _replace with . clean subsoil suitable for plant growth. T. Fill all planting beds with a minimum of 12" of prepared topsoil and peat moss . , C. Plantings shall. be spaced on 8" centers . • • . . 1.02 SEEDING TIME - ". A. , The approved dates for installing lawns are from April 1 to May 15 and from August 1 to September 15 . The contractor must make every effort to develop the • lawn within these dates . When delays in operations carry the work beyond these dates , or when conditions • are such by reason of drought, high winds , exdessive moisture , or other factors that satisfacoty results - are not likely to be obtained, work shall be stopped and 'shall be resumed only when conditions are favor- - ' able again or when approved alternate or corrective - measures and procedures have beenput' into effect as - • authorized by the Architect. • . B. Installation of lawn during any other 'period of time, , other -than that specified above , shall be at the . responsibility of the contractor. - i 3. 0. 3' • APPLICATION RATES : . - . 'A. Lime shall be added at the rate indicated in "Soil ' _ I Sample Tests" and when added shall be thoroughly mixed into the top 6" of the soil, after placing the soil on the site. 'The 'minimum application rate shall be -- 2-1/2 Tons/Acre . ' • B. Fertilizer for lawns shall be applied at the minimum rate of 15 pounds to 1 ,000 square feet to all areas i . being prepared for seeding. . C. - Fertilizer for planting beds shall be applied so that the nitrogen content will be approximately- 75 to 100 _ pounds "per "acre : ' - "'D:. Peat 'moss will be mixed with clean topsoil so that the • resulting mixture shall consist of 75% topsoil and 250 . . peat moss . This mixture will be used to backfill the __. • . planting beds .to a depth of 12" . , • 3. 04 CLEAN-UP A. Any soil, peat , or similar material which has been brought onto paved areas by hauling operations or otherwise shall be removed promptly, keeping' these areas clean at all times . - Upon completion of the work•, all excess soil and debris which has not previously been cleaned up shall be removed - j from the site or disposed of as directed by the Architect. All lawn areas and planting beds shall be prepared for final inspection. _ B. All lawn areas which have been distroyed by the execution of the Work shall, be restored. • SECTION 02830 LANDSCAPING - TREES AND SHRUBS PART 1: GENERAL 1.01 SCOPE • A. The work of this section consists of furnishing all materials, equipment and labor necessary for the treatment of subgrade established for. planted . areas; the installation of tree wells and root protection where applicable; planting of trees, shrubs and hedges; protection, main- tenance, and replacement of plants during the guarantee period, and all related items required to complete the work shown on the drawings and as specified. 1.02 DESCRIPTION OF WORK A. The extent of the landscape work for the trees and shrubs is shown on the drawings. B. The intent of this section is to have completed planted areas with acceptable plant material. 1.03 QUALITY ASSURANCE • A. Contractor's Qualifications: 1. Only a firm which has had a minimum of two (2) years successful experience in landscape work will be acceptable. The contractor must have a sufficient work force and equipment to complete the work without causing a delay. B. Design modifications may be made only as necessary to meet field con- ditions. Planting shall be located where shown on the Plans except where obstructions below ground or overhead are encountered or where ' ti changes have been made in the construction. Necessary adjustments shall be made only after approval by the Engineer-Architect. C. The contractor shall be responsible for all certificates of inspection of plant materials that may be required by Federal, State or other authorities to accompany shipments of plants, and shall be filed with the Engineer/Architect prior to acceptance of the material. D. Plants shall have a habit of growth that is normal for the species and shall be sound, healthy, vigorous and free from insect pests, plant diseases and injuries. All plants shall equal or exceed the measure- ' ` ments specified in the Plant List, which are minimum acceptable sizes. They shall be measured before pruning, with branches in normal_position. • Any necessary pruning shall be done at time of planting. ___ PART 2. 1L) ( .:; 2.01 PLANTING MIX A. Soil used in the planting mix shall be topsoil and shall have been laboratory tested, as specified in Lawns - Section 02820. , B. The planting soil, unless otherwise stated, shall be two (2) parts topsoil thoroughly mixed with one part peat. Very poor soils, gravel or hardpan - or other soil injurious to plants shall not be used. Before the planting soil is placed in the planting pits, it shall be thoroughly mixed with 5 pounds of 10-6-4 commercial fertilizer per cubic yard.. 2.02 PLANTING MIX CONDITIONERS A. Lime: Shall be as specified for Landscaping - Lawns, Section 02820. • B. Commercial Fertilizer: Shall be as specified for Landscaping - Lawns, • Section 02820. • C. Mulch: Shall be shredded bark prepared from tree clippings and con- forming to Indiana State Highway Standard Specifications. Samples shall be submitted for approval prior to installation. D. Peat: Shall be a domestic product consisting of partially decomposed vegetable matter and of natural occurrence. It shall be brown, clean low in content of mineral and woody material, mildly acidic and granulated or shredded. 2. 03 MATERIALS FOR STAKING, GUYING AND WRAPPING . A. Notched stakes and deadmen for anchoring guy wires shall be about 2 inches by 4 inches by 3 feet sound wood, treated with creosote or other approved wood preservative. • B. Stakes for supporting trees shall be either 2 inches square or 2-1/2" round, by 8 feet sound wood, treated for one-half (1/2) their length with creosote or. other approved wood preservative and capable of standing . in the ground for at least two years. C. Wire for guys or for fastening trees to stakes shall be No. 12 gauge pliable, galvanized iron. D. Flags to be fastened to guys shall be of sound wood about 1/2 inch by 3 inches by 12 inches with 3/8 inch hole centered 1-1/2 inch from each end, or 1-1/2 inches by 12 inches sheet metal with corner slipped and . punched, both ends, painted white. E. Hose to encase guy wires used for fastening trees to stakes shall be 2-ply reinforced rubber garden hose not less than 1/2" inside diameter. F. Wrapping material for tree trunks shall be standard burlap, heavy crepe paper, or other suitable materials, in strips 4-6 inches wide. It shall be free of breaks or tears. 2.04 PLANT MATERIALS A. Plant List: A list of plants is shown on the Planting Plan. This list is for the contractor's convenience only. He shall be responsible for planting the quantities and sizes as specified on the Plans. B. Balled and Burlapped Plants: Plants designated as "B&B" in the Plant List shall be balled and burlapped. They shall be dug with firm. natural balls of earth of sufficient diameter and depth to encompass the fibrous . and feeding root system necessary for full recovery of the plant. Balls shall be firmly wrapped with burlap or similar material and bound with twine or cord. Where necessary to prevent breaking or cracking of the ball during the process of planting, the ball may be secured to a plat- form. No plants moved with a ball will be acceptable if the ball is cracked or broken before or during planting operations. , I C. Bare-Root Plants: Plants designated "BR" in the Plant List shall be dug and the earth removed without injury to the fibrous root system necessary for the full recovery of the plant. Roots shall be covered with a thick coating of mud by puddling or wrapped in wet straw, moss, or other suitable packing material immediately after they are dug, for protection until delivered. 2.05 OTHER MATERIALS A. Anti-desiccant shall be a non-clogging emulsion which provides a pro- tective film over plant surfaces, permeable enough to permit trans- piration, delivered in containers of the manufacturer, and shall be mixed according to the manufacturer's directions. , e.g. , "Wiltpruf," "Folar Guard," or approved equal. B. For weed control around trees, shrubs and mulched areas, use "Treflan," "Round Up," or approved equal. PART 3: EXECUTION 3.01 TIME OF PLANTING A: 'Planting operations shall be conducted under favorable weather conditions. Planting operations may be conducted from April 15 through June 15, or September 1 through October 15. B. The landscape contractor must make every effort to install plant material within these dates. When delays in operation carry the work beyond the dates, or when conditions are such that satisfactory results are not likely to be obtained, work shall be stopped and shall be resumed only when conditions are favorable again or when approved alternate or corrective measures and procedures have been put into effect as authorized by the Engineer/Architect or Owner. C. Installation of plants during any other period of time, other than that specified, shall be at the responsibility of the landscape contractor. ' 3.02 LAYOUT AND SPACING A. Stake locations of trees and shrubs and outline of planting areas as shown on the plans. Obtain Engineer/Architect's approval. Engineer/ Architect reserves right to interchange or shift plant locations prior tb planting. 3,03 PLANTING PROCEDURE A. Unless otherwise specified, all plants shall be planted in pits, centered, and set on a minimum of six inches (6") of prepared soil compacted to such a depth that the finished grade level at the plant after settlement, will be the same as that at which the plant was grown. They shall be 1 planted upright and faced to give the best appearance or relationship to adjacent structures. No burlap shall be pulled out from under balls. Platform, wire and surplus binding from top and sides of the balls shall be removed. Roots shall be spread in their normal position. All broken or frayed roots shall be cut off cleanly. Topsoil or prepared soil shall be placed and compacted carefully to avoid injury to roots and to fill all voids. When the hole is nearly filled, add water as necessary to allow it to soak away. Fill the hole to finished grade; and form a shallow saucer around each plant by placing a ridge of topsoil around the edge of each pit. After the ground settles, additional soil shall be filled in to the level of the finished grade. - B. Circular- pits with vertical sides shall be excavated for all plants except for hedge and plants specifically designated on the Plans to be planted in beds.. Diameter of pits for trees and "B&B" shrubs and vines shall be at least two feet (2') greater than the diameter of the ball or spread of roots. Diameter of pits for bare-rooted ("BR") shrubs and vines shall be at least one foot (1' ) greater than the spread of roots. The depth of pits for trees, shrubs and vines shall be enough to ac- . commodate the ball or roots when the plant is set to finished grade allowing for a minimum of six inches (6") of prepared soil compacted in the bottom of the pit. • C. Ground Cover Beds: Ground cover shall be planted in beds having a minimum depth of twelve inches (12") . The topsoil or prepared soil used shall be thoroughly mixed with one-third (1/3) peat and lightly Plants shall be evenly spaced, as specified, in staggered rows and set to finished grade level after settlement. The beds shall then- be mulched with compost, peat, or as .specified on the Drawings. • D. Trees shall be supported immediately after planting. All trees six inches (6") and over in trunk diameter shall be guyed and wrapped. Smaller trees shall be staked. Wires shall be encased in hose to prevent • direct contact with the bark of the tree and shall be placed around the trunk in a' single loop. E. Wires shall be tightened and kept taught by twisting the strands together. F. Guying shall be.done with three guys spaced equally about each tree. Each guy shall consist of two strands of wire attached to the tree trunk at an angle of about 60 degrees at about two-fifths (2/5) of the height of the tree and anchored at the ground either to notched stakes which have been driven into the ground at an angle away from the tree so that the tops of the anchor stakes are below finished grade or (where underground utilities are within four feet (4' ) of finished grade) to deadmen placed at least three feet (3' ) below finished grade. G. A wood or metal flag shall be secured to each guy twelve (12) or eighteen (18) inches above the ground. • • H. Stakes shall be equally spaced about each tree and the end treated with wood preservative and shall be driven at a slight angle and tightened to a vertical position in the ground to a depth of 2-1/2 to 3 feet in such a manner as not to injure the ball or other roots. Trees shall be fastened to each stake at a height of about five feet (5' ) by means of two strands of wire. Stakes shall be uniform in height and placed according to the diameter of the tree trunk, as follows: 1. 3 to 6 inches - Guyed 2. 2 to 3 inches - 2 Stakes " 3. 2 inches or less - 1 Stake I. Promptly after planting, the trunks of all deciduous trees shall be wrapped spirally from the groundline to the height of the first branch. All wrapping shall be neat and snug and the material shall be held in place by a suitable cord. J., All plants shall be mulched with a two inch (2") layer of shredded bark immediately after, planting. This mulch shall entirely cover the area of the planting pit, bed, or saucer around each plant. 3.03 PRUNING AND REPAIR - A. Upon completion of the work under this contract, all trees and shrubs --) shall- have been pruned' and any injuries repaired. The amount of pruning shall be limited to the minimum necessary to remove dead or injured twigs and branches and to compensate for the loss of roots as a result of transplanting operations. Pruning shall be done in such a -manner as not to change the natural habit or shape of the plant. B. All cuts shall be made flush, leaving no stubs. On all cuts over 3/4 inch in diameter and bruises or scars on the bark, the injured cambium shall be traced back to living tissue and removed; wounds shall be smoothed and shaped so as not to retain water; and the treated area shall be coated with tree paint. 3.05 CLEAN-UP A. Any soil, mulch, peat or similar material which has been brought onto paved areas by hauling operations or otherwise shall be removed promptly, keeping these areas clean at all times. Upon completion of the planting, all excess soil, stones, and debris which has not previously been cleaned up shall be removed from the site. All planting areas shall be prepared for final inspection. .