sect28 lscp planting

8/3/2019 Sect28 LSCP Planting

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QCS 2007 Section 28 Part 1 Landscape Planting Page 11.1.11.1.11.1.21.1.31.1.41.1.51.21.2.11.2.21.2.31.31.3.11.3.21.3.31.3.41.3.51.3.61.3.71.3.81.3.91.3.101.3.111.3.121.3.131.41.4.11.4.21.4.31.4.41.4.51.51.5.11.5.21.5.31.5.41.5.51.5.61.5.71.5.81.61.6.11.6.2

LANDSCAPE PLANTING ...............................................................................3 GENERAL REQUIREMENTS ........................................................................3 Scope 3 References 3 Quality Assurance 3 & ~ ~ ~ 3 Job Conditions 4 SHIPPING, DELIVERY. STORAGE AND HANDLlNG .................................. 5 Shipping and Delivery 5 Storage 5 Handling 6 PRODUCTS ...................................................................................................6 General 6 Plants 6 Grass Materials 7 ~ ~ ~ 7 Soil 7 Soil Conditioners 8 Planting Soil Mixture 8 Dry Plant Fertiliser 9 Turf Fertiliser 9

9 Guys and Stakes 9 Edging Material 9 Irrigation Water 10 SITE PREPARATION FOR PLANTING AREAS ..........................................10 General Requirements 10 Sub-Surface Grading 10 Finished Grading 10 Planting Operations and Layout 11 Protection of Existing Vegetation 11 PLANTING ...................................................................................................11 Plant Pits 11 Backfill Mixture 11 Installation for Trees and Shrubs 12 Installation of Palms 13 Cultivation of Turf Areas 13 Seeding 13 Sprigging 13 Tumng 14 ANCILLARIES TO PLANTING .....................................................................14 Edging Plant Beds 14 Mulch 14

1.6.3 Watering of Plantse ___,"",_.. IOr_.ndM_J QCS 2007, 3111 Edition 14


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QCS 2007 Section 28 Part 1 Landscape Planting Page 2 1.6.4 Pruning 14 1.6.5 Antidesiccant Application 15 1.6.6 Clean Up and Site Restoration 15 1.6.7 Maintenance During Planting Operations 15 1.7 EXISTING LANDSCAPiNG ..........................................................................151.7.1 Care of Existing landscaping 15 1.7.2 Identification of Existing Plants 15 1.7.3 Fertilising Existing Trees 15 1.7.4 Fertilising EXisting Shrubs and Groundcover Beds 16 1.7.5 Pruning and Cavity Work 16 1.8 APPLICATION OF PESTICIDE.................................................................... 16 1.8.1 General Requirements 16 1.9 WARRANTEE, MAINTENANCE AND HANDOVER ....................................16 1.9.1 Plant Establishment and Warranty Period 16 1.9.2 Plant Maintenance During the Establishment Period 16 1.9.3 Replacement Plants During the Establishment Period 17 1.9.4 Lawn Maintenance During Plant Establishment Period 17 1.9.5 Final Acceptance 17

e ."..,-, """'....... Io'S. . . . , ......."-J QCS 2007, 3n1 Edition


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QCS 2007 Section 28 Part 1 Landscape Planting Page 31. LANDSCAPE PLANTING1.1 GENERAL REQUIREMENTS1.1.1 Scope

Work covered under this section consists of furnishing all labour, equipment and materialnecessary to perform all operations required for landscaping herein specified.2 Landscape planting Is inclusive but not limited to finished grading, supplying and spreading ofsoli, layout of plants and areas, turfing. seeding and sprigging of new lawns, ground coverplantings, shrub planting, tree planting, landscape edges, maintenance period, landscapewarranty, appliances and services necessary for and Incidental to completing all the plantingoperations in a workmanship like manner, according to the provisions of the ProjectDocumentation.3 Related Sections are as follows:

Section 6 Roadworks Section 12 Earthworks Related to Buildings

1.1.2 ReferencesThe following standards are referred to in this Part: ASTM C 516 Specification for Vermiculite Loose Fill Thermal Insulation ASTM C 549 SpeCification for Perlite Loose Fill Insulation BS 1377 Method of test of soils for civil engineering purposes

1.1.3 Quality AssuranceLandscape work must be undertaken by an experienced subcontractor specialising Inlandscape work. Work shall be performed and supervised at all times by qualified personnel.

2 All landscape materials shall be shipped with certificates of Inspection as required by theEngineer. Manufacturer's certified analysis for standard packaged products shall be provided.3 Defective plant material shall be considered to be any tree, shrub or plant which is:

(a) dead, dying or otherwise defective upon completion of the Works or six weeks afterthe first leafing out, whichever Is later(b) not in accordance with the Project Documentation.1.1.4 Submittals

The Contractor shall submit catalogue data and literature of manufacturers and suppliers.2 The Contractor shall submit manufacturer's certified analysis of all standard products,Including soli, fertilisers, peat. seed, Inorganic and organiC mulches and pesticides.3 The Contractor shall submit certificates confirming the origin, size, age of all plant materialsand that the same are free from Insects and disease.

0. Qatar Gen..... Organization for Standards and Metrology'i QCS 2007, 3"' Edition


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QCS 2007 Section 28 Part 1 Landscape Planting Page 44 The Contractor shall submit a Plant Procurement Schedule within fourteen (14) days of thestart of the Contract. This schedule shall identify the source of every plant species to beincluded in the Works and highlights plants that must be imported due to non-availability inQatar. The schedule shall be documented with the listing of names and locations of allnurseries, growers and plant material sources.5 The Contractor shall submit a weekly work schedule for approval before work is started. Theschedule shall identify tasks to be completed on a weekly basis and the antiCipated schedulefor completing the tasks. The Contractor will then modify and submit the schedule on aweekly basis identifying tasks completed, tasks to be completed, problems encountered andrecommendations6 A soils report is to be submitted by the Contractor for all soils to be used for landscapingpurposes in the Works. The Contractor shall arrange for an approved independent analyst toprepare a physical and chemical analysis of the soil and irrigation water to be used. Theanalyst shall also provide recommendations on soil amendment, fertiliser application and thelike. The report shall be submitted to the Engineer for approval before soil is placed. In thecase of imported soli, the report shall be submitted at least 10 days prior to delivery. Thereport shall identify the source(s) from which imported soils are to be furnished. At aminimum, the soil shall be analysed for:

(a) total salts (electro-conductivity of soli solution)(b) soil pH(c) exchangeable sodium, calcium, magnesium and potassium(d) available phosphates(e) organic matter as a percentage(f) available zinc, manganese, iron and boron(g) total sulphates7 The soil analysis shall also include fertilisers and other amendment requirements andquantities which when incorporated with the soil will provide the required nutrient levels forvigorous plant growth.8 Additional soil samples shall be taken at the rate of one in every 20 loads or as directed bythe Engineer and analysed. The results will be compared with the original sample to ensureconsistency and compatibility of supply.9 An operations and maintenance manual is to be provided by the Contractor. Instructionsshall be furnished for year round care of installed plants to be followed by the Owner. As aminimum, the manual will include the following:

(i) irrigation details: including water application rates and maintenance procedures(Ii) fertilisation: including fertiliser descriptions, application rates and application schedule(iii) salinity control: including leaching methods and leaching program monitoring(iv) pesticidelfungicide/herbicide applications: including safety application rates,procedures, and schedules(v) turf grass management: including mowing procedures, aerification, topdressing,vertical mowing for thatch removal, rolling, overseeding and sprigging(vi) propagation and seasonal replacement of all flowers and f10werbeds(vii) general maintenance: including pruning, stakes and ties, replacement and clean-up,protective fencing and grading(viii) equipment inventory: including maintenance procedures and manufacturer'smaintenance manual(ix) landscape maintenance personnel requirements and job descriptions.

1.1.5 Job ConditionsThe Contractor shall proceed with and complete planting operations as rapidly as possible asportions of the Site become available, working within seasonal limitations for each type oflandscape work required.e .....__ ro,._ ....,,_'I QCS 2007, 3n1 Edition

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QCS 2007 Section 28 Part 1 Landscape Planting Page 52 No planting shall be carried out during periods of heavy rain, sandstorms, heavy winds, orduring intense daytime heat. Plants and trees shall only be moved or planted between midSeptember and mid May.3 When special conditions warrant a variance to the planting time and conditions, a proposedplanting schedule shall be submitted to the Engineer for review and approval. In such cases,the planting will be Installed at no additional cost and all conditions and obligations such asmaintenance and warranty remain the same as specified herein.4 Planting of trees and shrubs will occur prior to lawn plantings.

1.2 SHIPPING, DELIVERY, STORAGE AND HANDLING1.2.1 Shipping and Delivery

Prior to shipping all plants shall be Inspected, dug, and made ready for shipping inaccordance with standard practices and procedures. The Engineer shall be notified of thedelivery schedule In advance so the plant material may be inspected upon arrival at the Site.All unacceptable plant material shall be removed from the Site immediately. The Engineermay request inspection at the source of the plants prior to delivery to the Site. The Engineerreserves the right to reject any plant material that does not meet the quality requirements ofthe Project Documentation.

2 The Contractor shall protect plants to prevent damage to the root balls, containers ordesiccation of leaves. All plant material shall be delivered In a closed vehicle or in openvehicles with the load properly covered In transit for protection from drying winds.3 Fertiliser, pesticides, fungicides, chemicals and seed shall be delivered to the Site in theoriginal unopened containers bearing the manufacturer's guaranteed chemical analysis,name, trade name, or trademark. In lieu of containers, fertiliser's and seed may be furnishedin bulk and a certificate indicating the above Information shall accompany each delivery. Thefertiliser shall be kept dry and protected from contamination.1.2.2 Storage

Plants shall be installed as soon as possible after delivery to the Site. Plant material shall beprotected from exposure to wind and direct sunlight prior to installation. Plants not installedon the day of arrival shall be stored in shaded areas, protected from the wind and maintainedand watered to good horticultural standards until planted. Care shall be taken to ensure thatthe plants do not dry out. No plant shall be stored on site for more than 3 days prior toplanting.2 Root balled and container grown trees and plants shall be placed close together with rootballs covered with approved soli, peat or straw and kept medium moist until planted.3 Bare rooted trees and shrubs shall be heeled Into prepared trenches and covered withagricultural soli or peat and kept medium moist until planted.4 Seed and fertilisers shall be kept In dry storage away from contaminants in areas asdesignated or approved by the Engineer.5 Soli, compost, fertilisers and other amendments shall be delivered to the Site and storedseparately In approved locations and In a manner to avoid contamination and wetting until soilmixing operations commence.6 Fertilisers, antidessicants, pesticides and other chemicals shall be delivered to the Site In themanufacturer's unopened containers, each fully labelled, conforming to applicable regulationsand bearing the trade name and warranty of the producer.eQoIor_'"Orpn_for_. . . . . .ndM_i QCS 2007, 31'11 Edition


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QCS 2007 Section 28 Part 1 Landscape Planting Page 61.2.3 Handling

Care shall be taken to avoid injury to the plants. Material shall not be dropped from vehicles.Balled and burlapped plants shall be handled carefully to avoid cracking or breaking the earthball. Container grown plants shall be handled by the container. Plants shall not be handled bythe trunk or stem.2 Chemicals shall be stored in a manner to avoid cross contamination. No measuring, mixing

or work of any kind shall be permitted within storage area.1.3 PRODUCTS1.3.1 General

All plants and turf material will conform to the varieties specified or shown in the ProjectDocumentation and be true to the botanical name as listed In publications.2 Substitutions shall only be made when a plant (or alternative as specified) Is not obtainableand the Engineer authorises a change order providing for use of the nearest equivalent

obtainable.3 Plants shall be supplied from localities similar to the climatic conditions of the Project.1.3.2 Plants

Only nursery grown plants shall be provided except for palm species.2 Plants to be used In the Works shall be well branched and formed planting stock. They shallbe sound, vigorous and free from disease, sunscald, windburn, abrasions, harmful Insects oreggs, and have a normal healthy and non-broken root system.3 Deciduous and evergreen trees shall be a Single trunk with a single leader, unless otherwise

indicated, and display no weak crotches.4 Symmetrically developed trees and shrubs shall be provided with uniform habit and shall befree from objectionable disfigurement.5 Groundcover and vines shall be provided with the number and length of runners for the sizespecified.6 Trees shall be earth balled and burlapped covered or pot grown.7 Shrubs, vines and ground cover plants shall be provided in well established in removablecontainers or formed homogenous soli sections.8 Palms shall have straight parallel sides and healthy stems that are not rotted, Infected oreaten by pests or with root systems extending above the level which the palm was originallyplanted. Palms should have vigorous root system, a crown of new leaves, leaves the colourof an adult palm and proper hardiness. Palms shall be balled and burlapped unless containergrown palms are available. Off shoots are not acceptable.9 The digging and lifting of palms shall take place in accordance with the following procedure:

(a)(b)(c)(d)

remove all suckers, all flowering and fruiting parts and approximately 30 % of thefrondstrim remaining fronds to 65 % of original length, 11ft fronds to enclose and protect thegrowing tip. Wrap in burlap cloth and securely tie in placesaturate the entire root ball with water prior to excavationdig with hand tools a vertical sided trench to a minimum depth of 750 mm, cleanlycutting roots no closer than 250 mm from the steme ............... """'.1zati0ft ................M " ' "" , 'J QCS 2007, 31d Edition


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QCS 2007 Section 28 Part 1 Landscape Planting Page 7(e) under cut roots and carefully lift tree, avoiding any shock which may damage leafheart(f) wrap root ball with burlap and secure with wire mesh to contain soil and retainmaximum soil moisture.

10 The minimum acceptable sizes of all plants measured before pruning in normal position shallconform to the measurements specified in the Project Documentation. Plants larger in sizethan specified may be used with the approval of the Engineer, at no extra cost.

11 Container grown trees, shrubs, groundcover and vines shall have sufficient root growth tohold the earth intact when removed from the containers, but shall not be rootbound.Containers shall be sufficiently rigid to hold ball shape and protect root mass during shipping.12 A plant schedule is to be provided listing the designated plants and following information:

(a) botanical name(b) common name(c) quantity(d) size(e) condition(f) additional pertinent data

1.3.3 Grass MaterialsGrass sprigs shall be provided as healthy living stems stolons or rhizomes with attachedroots including two to three nodes. They shall be 5 to 15 mm long without adhering soil. Thelimitation of time between harvesting and planting of sprigs shall be 24 hours. Sprigs shall beobtained from heavy and dense turf, free from weeds. Sprigs that have been exposed to heatand excessive drying will be rejected. Sprigs shall be planted at 150 mm apart in bothdirections.

2 Grass seed shall be the latest season's crop and shall be delivered in originalsealed packages bearing the producer's guaranteed analysis for percentage ofmixtures, purity, weed seed content, and inert material. Seed that has become wet,mouldy, or otherwise damaged will not be acceptable. On-site seeding shall be done in thepresence of the Engineer. The seed mixture shall be sown at the rate of 35 g/m 2. Grass seedmixtures shall be listed by schedule with information as follows:(a) botanical name(b) common name(c) proportion by weight(d) minimum percentage of pure seed(e) minimum percentage of germination(f) maximum percentage of weed seed

3 Turf shall be strongly rooted, not less than 2 years old, free of weeds and undesirable nativegrass. Only turf that is capable of vigorous growth and development when laid shall be used.Turf shall be of a uniform size in width and length. Broken pads or pads with uneven ends willnot be acceptable.

1.3.4 LabelsEach plant, or group of plants or container of the same species, variety, and size of plant,shall be legibly tagged with a durable, waterproof and weather resistant label indicating thecorrect plant name and reference number if applicable. Labels shall be securely attached andnot removed.

1.3.5 SoliSoil shall be sweet sand or washed marine sand free of admixtures of subsoil, foreign matter,toxic substances, weeds and any material or substance that may be harmful to plant growth.o ......___ "" ..........ndM_'I QCS 2007, 3n1 Edition


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QCS 2007 Section 28 Part 1 Landscape Planting Page 82 The Contractor shall furnish agricultural soil from approved sites.3 Material shall be stored in piles less than 1 metre high. Piles shall be protected from unduecompaction and maintained free of contamination and construction debris.4 The soil shall comply with the following chemical criteria:

(a) pH value: not less than 6.5 nor more than 8.5(b) electro-conductivity: less than 4 mm mhos/cm saturated extract at 25C(c) free carbonates: less than 0.5 % air dried.(d) chlorides: less than 200 ppm in saturated extract.(e) sulphates: less than 200 ppm in saturated extract.(f) exchangeable sodium: less than 15 % In neutral normal ammonium acetate.(g) boron: less than 1.5 ppm, hot water soluble.5 The soli shall comply with the grading criteria in table 1.1.

Table 1.1Grading Criteria

Sieve Size (mm) % by Mass Passing5.000 1002.380 65 to 1001.180 45 to 1000.600 35 to 800.300 5 to 480.150 oto 150.075 Oto 3

1.3.6 Soil ConditionersPeat shall be a natural product of sphagnum moss peat/peat humus derived from a freshwater site. Peat shall be shredded and granulated to pass through a 12 mm mesh screen andconditioned In storage plies for at least 6 months after excavation. The peat shall be free fromsticks, stones, roots, and other objectionable matter. It shall have a pH value of not iess than4 and nor more than 7.5. The minimum organic content shall be 85% on a dry weight basis.Peat shall be delivered in undamaged commercial bales in air dry condition.

2 Manure shall be the decomposed animal manure of fully fermented pre-drled cow or chickenmanure with a minimum nitrogen, phosphoric acid and potassium percentage of 2-2-2 and apH value of 6.0 to 7.5. Sludge waste product may be used as a substitute subject to approvalof the Engineer. Manure and sludge shall be free of stones, sticks and non-bio-degradablematerial.

3 Vermiculite shall be horticultural grade and free of any toxic material and conform to ASTM C516.4 Perlite shall conform to ASTM C 549.1.3.7 Planting SoIl Mixture

The planting soil mixture for shall consist of approved soli, peat, manure and other soliconditioners as specified in the Project Documentation.0---,.,-........... -} QCS 2007, 3Rt Edition


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QCS 2007 Section 28 Part 1 Landscape Planting Page 92 The mixture shall be placed in accordance with the requirements of the trees, shrubs orgrass to be planted.1.3.8 Dry Plant Fertiliser

Fertiliser shall be commercial grade and uniform in composition.2 Packets of slow release fertiliser shall bear the manufacturer's guaranteed statement ofanalysis.3 Granular fertiliser fo r trees and shrubs shall consist of, by percentage by weight, 5 % nitrogen(N), 10 % available phosphoric acid (P) and 5 % potassium (K). .4 Controlled release fertiliser shall consist of, by percentage by weight. 5 % nitrogen (N), 10 %available phosphoric acid (P) and 5 % potassium (K). Control released fertiliser may be inpacket or tablet form.1.3.9 Turf Fertiliser

Fertiliser shall be commercial grade, free flowing and uniform in composition and bear themanufacturers guaranteed statement of analysis.1.3.10 Mulch

Mulch shall be free of weeds, sticks and other deleterious material.2 Inert mulch material shall be crusher run rock, granite chips, marble chips or other suitablematerial approved by the Engineer.3 Organic mulch material shall be cocobean shell, shredded bark or other suitable materialapproved by the Engineer.1.3.11 Guys and Stakes

Stakes for tree support shall be rough sawn wood, free from knots, rot, cross grain. or otherdefects that Impair the strength. Stakes shall be treated with pentachlorophenol or otherapproved non-injurious green preservative.2 Bracing stakes shall be a minimum of 50 mm by 50 mm by 2.400 mm long and pOinted at

one end.3 Ground stakes shall be a minimum of 50 mm by 50 mm by 900 mm long and pointed at oneend.4 Guying wire shall be 2.7 mm annealed galvanized steel wire.5 Guying cable shall be a minimum of five strand. 2.76 mm diameter cadmium plated steelcable.6 Hose chafing guards shall be new 2-ply reinforced rubber or plastic hose and shall be of the

same colour for the entire Project. The length of hose chafing guards shall be 1% times thecircumference of the plant at Its base.7 Flags shall be fastened to the guys and be white surveyors tape.1.3.12 Edging Material

Edging material shall be galvanized steel, polyethylene, electrostatically painted aluminium orother as approved by the Engineer. The material shall be to the sizes designated in thedrawings. Edging anchors shall be as recommend by the manufacturer.(it; - - -_ ........_ .....! QCS 2007, 3'" Edition


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QCS 2007 Section 28 Part 1 Landscape Planting Page 101.3.13 Irrigation Water

Irrigation water shall be provided by the Contractor from an offslte source approved by theEngineer as being suitable for Irrigation. Water shall be free from substances harmful to plantlife. Water sources shall not exceed the following parameters:(a) pH: 6 to 7(b) total dissolved solids: less than 1000 ppm

1.4 SITE PREPARATION FOR PLANTING AREAS1.4.1 General Requirements

The Contractor shall examine areas to receive landscaping for compliance with requirementsand conditions affecting performance of work In this Section. The Contractor shall notproceed with plant operations until unsatisfactory conditions are discussed with the Engineerand corrected.2 The Contractor shall determine the location of above grade and underground utilities andperform work In a manner which will avoid damage to them. Damage to underground utilitiesshall be repaired at the Contractor's expense.3 When conditions detrimental to plant growth are encountered, such as rubble, adversedrainage or obstructions, the Contractor shall notify the Engineer prior to planting.4 The Engineer shall verify that sutrgrades are as indicated in the project Documentation.5 Grade stakes shall be maintained until removal of them is mutually agreed upon by all partiesconcerned.6 When grades are encountered that are detrimental to finished grading and plantingoperations, the Contractor shall notify the Engineer prior to planting.1.4.2 Sub-Surface Grading

All perennial weeds shall be treated with an approved herbicide and the period of timerecommended by the manufacturer shall be allowed to elapse prior to commencing gradingoperations.2 Grading operations shall occur when the s u ~ s o i l is reasonably dry and workable.3 Areas to be graded shall be graded to smooth flowing contours with all minor hollows andridges removed. Rock projections and boulders shall be removed and disposed of at alocation as agreed with the Engineer.4 Noncoheslve, light subsoil shall be loosened with a 3-tlne ripper to a depth of 300 mm at 600

mm centres. Stif f clay and other cohesive subsoil shall be loosened with a single tine ripper toa depth of 450 mm at 1 m centres.5 A minimum of 150 mm of approved soil shall be spread uniformly over the loosened area andincorporated into the sub-grade soil to obtain a uniform and well pulverised soil mix.6 The area shall be compacted to a minimum of 90 % of maximum dry density as determinedin accordance with Test 13 of BS 1377.1.4.3 Finished Grading

Grades shall be brought to the finished ground levels as Indicated on the Project Drawings oras agreed with the Engineer to a tolerance of 25 mm. Finished ground levels shall be 30mm below adjoining paving or kerbs after compaction and settlement. Grading shall bee _tor_ ...M_oIarGon. . . .

'} QCS 2007, 3n1 Edition


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QCS 2007 Section 28 Part 1 Landscape Planting Page 11carried out in such a manner that even gradients are formed between the spot levelsindicated on the Project Drawings. No depressions shall remain which could collect standingwater.

2 Soil shall be placed in lifts not greater than 150 mm in thickness.3 The filled area shall be compacted to a minimum of 90% of maximum density as determinedin accordance with Test 13 of BS 1377.1.4.4 Planting Operations and Layout

Plant material locations and planting bed outlines shall be staked two (2) days before anyexcavations are made.2 The Contractor shall notify the Engineer two (2) days before the start of planting operations.3 Plant locations may be adjusted by the Engineer to meet site conditions.1.4.5 Protection of Existing Vegetation

Grassed areas that have been established prior to planting operations shall be coveredbefore any excavations are made in a manner that will afford adequate projection.2 Existing shrubs, trees and groundcover shall be barricaded in aduring planting operations. manner to protect them

1.5 PLANTING1.5.1 Plant Pits

Plant pits shall be dug to produce vertical sides and flat uncompacted bottoms. Excavatedmaterial shall be disposed of in a proper manner. If approved by the Engineer, excavatedmaterial may be used as fill in areas where fill material is required.

2 Upon completion of excavation, the pit shall be filled with water and then left to thoroughlydrain prior to setting plants.3 Minimum acceptable pit sizes shall be as shown in Table 1.2.

Table 1.2Plant Pit Size Schedule

Item Pit SizePalm TreesOrnamental TreesShrubGround cover, seasonal flowers and turfed areas

2000 x 2000 x 2000 mm1500 x 1500 x 1500 mm1000 x 1000 x 1000 mm

500 mm depth

1.5.2 Backf il l MixtureThe backfill mixture shall be a portioned by volume and shall be made from a mixture ofagricultural soil and selected soil amendments as detailed in Table 1.3.

Table 1.3o ....... o.n.... " " " ' ._ ...................M_I QCS 2007, 3"' Edition


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QCS 2007 Section 28 Part 1 Landscape Planting Page 12Mix Proportions

Item Backfill Component Mix ProportionTrees Soil

PeatManure

General Fertiliser

80 % of mixture10 % of mixture10 % of mixture

35 g per pitPalms Soil

PeatManure

General Fertiliser


50 g per pitShrubs Soil

PeatManure

General Fertiliser


30g per pitGroundcover and Vines Soil

PeatManureGeneral Fertiliser

85 % of mixture.10 % of mixture.5 % of mixture.

25 g per pit1.5.3 Installation fo r Trees and Shrubs

Plants shall be handled carefully and arranged so they take full advantage of the individualcharacter of each plant in relationship to other plants.2 Plants shall placed in the centre of each pit, set plumb and held in place until sufficientbackfill mixture has been firmly placed around the root ball. Plants shall be placed so that thelevel at which they were set with respect to surrounding ground level before installation is the

same as after installation.3 Ball and burlap plants shall have twine, metal, plastic and wire ties removed from the tops ofthe earth ball after backfill soil has been placed to approximately two thirds of the ball depth,tamped lightly and watered. Backfilling around plant shall be completed in 150 mm layersafter water has drained away. Burlap wrapping shall not be pulled out from under the earthball.4 Plants supplied in non-biodegradable containers shall be removed in such a way as toprevent damage to plant or root system. Before planting, any damaged or broken roots shallbe carefully trimmed and removed. Plants in biodegradable of organic containers may beinstalled with the container in place.5 A 100 to 150 mm high earth saucer shall be formed around individual plants. The diameter ofthe saucer should be larger than and outside the backfilled area.6 After planting, plants shall be guyed or staked as required or directed by the Engineer. Treesand shrubs shall be protected against wind and sun with burlap wrapping where necessary ordirected to ensure satisfactory establishment of plant.7 Trees 1.2 to 1.8 m tall shall be held in place with one (1) bracing stake. The stake shall bepositioned close to the tree on the windward side. The stake shall be driven vertically into firmground taking care not to injure the roots. The tree shall be held firmly to the stake with adouble strand of wire. A chafing guard shall be used were the wire is in contact with the tree.8 Trees 1.8 to 2.5 m tall shall be held in place with two (2) bracing stakes placed on opposite

sides. The stake shall be driven vertically into firm ground taking care not to injure the roots.e .,...,........,.".............' 5 . . . . . . . . . . . ."_ '} QCS 2007, 3111 Edition


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QCS 2007 Section 28 Part 1 Landscape Planting Page 13The tree shall be shall be held firmly in place with a double stand of wire Chafing guards shallbe used where the wire is in contact with the tree.

9 Trees taller than 2.5 m shall be held firmly in place with three (3) guying lines of double strandwire placed equidistantly around the tree. The wire shall be anchored with ground stakesdriven Into firm ground outside the earth saucer. The wire shall be anchored to the tree at apoint equal or greater than one half of its height. A flag shall be securely fastened to eachguying wire.1.5.4 Installat ion of Palms

Palms shall be lifted and moved with a crane or other approved method to avoid any damageto any part of the palm.2 Palms shall be placed in the centre of each pit, set plumb and held in place until sufficientbackfill mixture has been firmly placed around the root ball. The top of the root ball should be100 mm below the top of the planting pit. The pit shall be backfilled with specified mixture toapproximately two thirds of depth of the root ball, tamped lightly and watered. BaCkfillingaround plant shall be completed in 150 mm layers after water has drained away. A 100 to 150

mm high earth saucer shall be formed around the palm. The diameter of the saucer shouldbe larger than and outside the backfilled area.1.5.5 Cult ivation of TurfAreas

After the areas required to be turfed have been brought to the specified levels, fertiliser shallbe applied at the rate recommended by the manufacturers. Soil conditioners shall be spreaduniformly over the soil. The soil shall be raked to a true and even surface. All stones ofgreater than 25 mm diameter are to be removed.1.5.6 Seeding

Seed shall be spread over a fine levelled, cultivated soil bed by hand or mechanical seeder.Half of the specified rate applied twice in perpendicular directions so as to achieve an evenseed distribution rate.

2 Following seeding, the bed shall be raked, harrowed or gilled to cover the seed with soli to amaximum depth of 25 mm.3 Cut straw or other fibrous mulch shall be applied over seeded areas to protect from direct sunexposure and blowing winds. Whenever necessary, mulch shall be covered with jute nettingto hold the mulch in place. The netting shall not be removed until directed by the Engineer.4 The perimeter of seeded area shall be flagged off to restrain foot traffic until after the secondmowing following complete grass coverage or as directed by the Engineer.5 Water shall be applied lightly and frequently until one week after 50 % germination and thengradually Increase duration and period between waterlngs until normal Irrigation programme

is met.1.5.7 Sprigging

Sprigs shall be broadcast uniformly by hand, with mechanical equipment or other approvedmethod. The maximum planting spacing between viable sprigs shall be 300 mm. Sprigs shallbe forced into the prepared soli to a minimum of 25 mm by hand, disk-rolling or otherapproved method.

2 Immediately after completion of the sprigging operation the entire area shall be firmed with aroller not exceeding 135 kg fo r each metre of roller width. The planted area shall have asmooth uniformed finish without depressions or ridges.0.,...,--- ..,................'I QCS 2007, 3n1 Edition


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QCS 2007 Section 28 Part 1 Landscape Planting Page 143 The perimeter of the sprigged area shall be flagged off to restrain foot traffic until after thesecond mowing following complete grass coverage or as directed by the Engineer.4 Watering shall be started immediately after completing each day of sprigging. Water shall beapplied at a rate sufficient to ensure moist soli conditions to a minimum depth of 70 mm.Watering shall continue until majority of sprigs can sustain themselves on the normalIrrigation programme. Run-off and puddling shall be prevented.1.5.8 Turfing

Turfing shall be laid on cultivated soil within 24 hours of stripping. The turf shall be laid toform a solid mass with tightly fitted joints. The ends of the turf shall be butted. Strips shall bestaggered to offset joints in adjacent courses.2 The turf shall be tamped or rolled to ensure contact with the sub-grade. Soli shall be workedInto minor spaces between pieces of turf and excess soil removed.3 The perimeter of the turfed area shall be flagged off to restrain foot traffic until after the thirdmowing or as directed by the Engineer.4 The turfed area shall be watered with a fine spray immediately after completing each day ofturfing operations. Water shall be applied to ensure a moist sub-grade soli to a minimumdepth of 70 mm Is achieved. Watering shall continue until turf can maintain itself on thenormal irrigation programme.1.6 ANCILLARIES TO PLANTING1.6.1 Edging Plant Beds

Planting beds shall be uniformly edged, using a sharp tool to provide a clear cut division linebetween the planted area and adjacent area and to provide the required shape. The entireplanted area shall be raked smooth while retaining the earth saucers.2 Edging materials shall be install in accordance with the manufacturer's instructions.1.6.2 Mulch

Mulch shall be spread to a uniform depth of 100 mm no later than 48 hours after planting.Mulch should be kept out of lawn areas, crowns of shrubs and of f paved areas and buildings.1.6.3 Watering of Plants

The Contractor shall water the plants as necessary to maintain an adequate supply ofmoisture within the root zone and maintain healthy growth. The water shall be allowed to flowgently around the plant and shall not be delivered to cause disturbance to the roots or soil.Run-off. puddling and wilting shall be prevented. Earth saucers shall be rebuilt as needed toretain water.

1.6.4 PruningImmediately after planting. all plants are to be pruned as directed by the Engineer and Inaccordance with accepted horticultural practices. The total amount of foliage shall be prunedby one fourth to one third on the Installed trees and shrubs to compensate for loss of rootsand transporting shock. Pruning shall be done to carefully. Any damaged, dead or diseasedbranches shall be cut back and any weak or malformed growth shall be removed. The typicalgrowth habit of the individual plant shall be retained.

2 Cuts shall be clean and shall be made flush with the parent trunk or branch. Improper cuts,stubs, dead and broken branches shall be removed. Right angle cuts to the line of growthe___ ......._....M_'I QCS 2007, ani Edition


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QCS 2007 Section 28 Part 1 Landscape Planting Page 15shall not be permitted. Trees shall not be poled or the leader removed, nor shall the leader bepruned or topped off. Cuts or wounds shall be painted with an appropriate wound dressing.

1.B.5 Antldeslccant ApplicationPlants requiring additional protection against wilt and shockantldesiccant in accordance with the manufacturer's Instructions.

shall be sprayed with

1.B.B Clean Up and Site RestorationExcess and waste material shall be removed daily. Pavements and work areas shall be keptin a clean and orderly fashion. Pedestrian access points and vehicular access points shall bemaintained and kept clear at all times. All rubbish and litter shall be cleared as i t accumulateswithin the landscape work area.

2 When planting and turf work has been completed, all debris Including subsoil, excessagricultural soil, litter, and debris shall be removed and disposed of at a location as agreedwith the Engineer3 Existing turf areas, pavements and facilities that have been damaged fromoperations shall be restored to the original condition at the Contractor's expense. planting1.B.7 Maintenance During Planting Operations

Newly installed plants shall be maintained in a healthy growing condition.2 Maintenance operations shall begin immediately after each plant is installed and shallcontinue until the plant establishment period commences.3 Maintenance Includes watering, pruning, wound dressing, straightening and other necessaryoperations.4 Plant beds and saucers shall be kept free ofweeds and other undesired vegetation.5 Plants shall be checked for settlement and shall be reset to the proper level as necessary.1.7 EXISTING LANDSCAPING1.7.1 Care of Existing landscaping

Where construction procedures or site conditions may cause damage or impact to existinglandscaping, it shall be the Contractors responsibility to take measures as described below toprotect and maintain such plant materials throughout the duration of the Project, or to replacesuch materials at his own expense if accepted by the Engineer.1.7.2 Identification of existing Plants

EXisting plants shall be tagged with a durable, waterproof and weather resistant labelindicating the correct plant name. Labels shall be securely attached and not removed untildirected by the Engineer.1.7.3 Fertilising existing Trees

Holes at 600 mm centres shall be dug by hand or with a mechanical device, a minimum 40mm in diameter and 500 mm deep, over the outer half of the branch spread zone of eachtree.2 Slow release fertiliser shall be placed in each hole to within 100 mm of the surrounding

ground level.

0.. Qatar Gen. . . .1Organization for Standards and Metrology'I QCS 2007, 31d Edition


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QCS 2007 Section 28 Part 1 Landscape Planting Page 163 The holes shall be backfilled with approved soli.1.7.4 Fertilising Existing Shrubs and Groundcover aeds

EXisting shrubs and groundcover beds shall be topdressed withFertiliser adhering to plants shall be flushed with water. slow release fertiliser.

1.7.5 Pruning and Cavity WorkA suitably qualified tree surgeon shall perform the required pruning and cavity work onexisting plants. Sucker growth, deadwood larger than 15 mm in diameter, branchesinterfering with or hindering growth of plants and diseased branches shall be removed.

2 The Contractor shall cut back or remove branches as necessary to give plants proper shapeand balance.3 Stubs, improper cuts and broken limbs shall be removed.4 Cuts shall be clean and shall be made flush with the parent limb or trunk. Cuts, wounds and

cavity work shall be painted with an appropriate tree wound dressing.1.8 APPLICATION OF PESTICIDE1.8.1 General Requirements

When pesticide becomes necessary to remove a disease or pest, a trained and certifiedoperative shall apply the required pesticide in accordance with the recommendations of themanufacturer.2 Hydraulic equipment shall be provided for liquid application of pesticides with a leak prooftank, positive agitation methods, controlled application pressure and metering gauges.3 Prior to application the Contractor shall submit a pesticide treatment plan to the Engineer.1.9 WARRANTEE, MAINTENANCE AND HANDOVER1.9.1 Plant establishment and Warranty Period

Upon substantial completion of landscaping works as approved by the Engineer, the plantestablishment period for maintaining Installed plants in a healthy growing condition shallcommence. The plant establishment period shall be in effect until the end of the warrantyperiod. At the end of the warrantee period, all plants and turf shall be in a healthy and livingcondition.2 When planting operations extend over more than one season or there is a variance to theplanting times, the plant establishment periods shall be furnished for work completed, asdirected. Written calendar dates shall be furnished to the Engineer for the beginning of theplant establishment period. When there is more than one plant establishment period, theboundaries of the planted areas covered for each period shall be detailed.1.9.2 Plant Maintenance During the establishment Period

Maintenance of plants shall include straightening plants, tightening stakes and guyingmaterial, repairing wrapping, protecting plant areas from erosion, supplementing mulch,application of tree wound dressing, removing dead or broken tip growth by pruning,maintaining edges of plant beds and earth saucers, maintaining plant labels, salinity control,watering, weeding, removing and replacing unhealthy plants, pesticide treatment and otherhorticultural operations necessary for proper plant growth and keeping the Site neat ine .............'-_ ..._ ....M-} QCS 2007, 3n1 Edition


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QCS 2007 Section 28 Part 1 Landscape Planting Page 17appearance. The Contractor shall provide all necessary labour, equipment and materials tocomply with this operation.

2 Watering shall be conducted regularly to maintain an adequate supply of moisture within theroot zone.3 Weed control and debris removal shall be routinely performed by the Contractor. Grass andweeds shall not be allowed to reach a height of 50 mm in any tree basin or around any plantbefore being completely removed, including the root growth.4 Throughout the maintenance the Contractor shall continue a fertiliser programme to maintainsoil nutrients, and fertility suitable to proper plant growth.5 Amended agriculture soil shall be added to maintain finished ground levels and to maintainearth saucers. Serious settlement affecting the setting Ilevel of the plant in relation to thedepth at which it was grown will require replanting in accordance with Clause 1.5.6 Treatment for disease or pest shall be in accordance with Clause 1.8.

1.9.3 Replacement Plants During the Establishment PeriodA survey of the landscaping works shall be carried out fifty (50) days after acceptance ofsubstantial completion. Following the survey, the Engineer will direct the Contractor toremove and replace all plants determined as dead. Plants reviewed that exhibit questionableabilities to survive will be tagged by the Contractor In the presence of the Engineer and bereviewed after an additional twenty five (25) days to determine acceptance or rejection. TheContractor shall make reasonable efforts to stabilise the quality of the tagged plants.

2 All replacement planting shall be at the Contractor's expense.1.9.4 Lawn Maintenance During Plant Establishment Period

Maintenance shall consist of watering, fertilising, weeding, mowing, trimming and otheroperations as required to establish a smooth acceptable lawn free of eroded or bare areas. Ifrequired, the Contractor shall apply maintenance fertiliser after the second mowing. Anyadditional fertiliser shall be added when grass is dry. After application of the fertiliser, the areashall be watered well2 The Contractor shall maintain lawns for not less than the period stated below and longer asrequired to establish an acceptable lawn.3 Seeded lawn areas shall be maintained through three (3) maintenance cuttings but not lessthan sixty (60) days after substantial completion.4 Sprigged and turfed lawn areas shall be maintained through two (2) maintenance cuttings but

not less than thirty (30) days after substantial completion.1.9.5 Final Acceptance

Prior to the completion of the plant establishment period, a preliminary inspection shall beundertaken by the Engineer. The time for this inspection shall be established in writing. Thequantity and types of plants installed and the acceptability of the plants shall be determined.The plant establishment and warranty period will end with this inspection provided that theContractor has complied with the work required under Clause 1.9.1. The Contractor shall alsocomply with the following requirements.2 Dead, missing or defective plant material or turf shall be replaced. Replaced plants will be ofthe same size and species as originally specified.

0 .............. ."..........""8 ......... .....-'I QCs 2007, 3111 Edition


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..... ~ ..------...- - - QCS 2007 Section 28 Part 1 Landscape Planting Page 183 Weed plant beds and saucers. Prior to Inspection treat these areas with an application ofapproved pre-emergent herbicide.4 Remove stakes, guy wires and wrappings from plants as directed by the Engineer.5 Complete remedial measures as directed by the Engineer.6 Repair damages caused while making plant or turf repairs.7 A final inspection, if required, shall be undertaken by the Engineer to determine that thedeficiencies noted in the preliminary inspection have been corrected. The Ume for thisinspection shall be established in writing.

END OF PART

0. Qatar General Organization fo r Standards and Metrology

sect28 lscp planting

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