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23110 Op Works Issue 20-12-2023
mulch can be placed to the finished surface levels. Materials − Excavate a hole for each plant twice the diameter of the rootball and 100 mm Excavate existing trees to be transplanted in a manner which minimises stress and
Surface gully pits to be an approved precast or moulded plastic or concrete product with deeper than the root ball. Break up the base of the hole to a further depth of 100 potential damage to overall tree health ensuring adequate retention of soil volumes
2.5 Imported Soil Blend purpose made grate. mm and loosen the sides of the hole. surrounding rootball.
− Remove the plant from the container with minimum disturbance to the root ball, and Root Pruning
General Connections place it in its final position, in the centre of the hole and plumb. Ensure the plant
All imported soil blends to comply with Soils for Landscape Development. Surface gully pits must be connected to surface drains or to the stormwater drainage root ball is level with the finished surface of the soil surrounding the hole or bed. Ensure all cuts are clean and even so that the cutting does not unduly disturb the
system. All connections shall be thoroughly sealed. − Thoroughly water plants immediately after planting and at such times during the remaining root system.
Testing
Testing contract period as is required to maintain growth free from water stress. Each plant Lifting
Submit in writing, test certificates from an independent laboratory registered with the
will require a minimum of 10 litres of water at the time of planting. Ensure trees are lifted to avoid trunk and branch damage.
NATA as evidence that the soil blend used complies with the requirements specified. Test all lines on completion to ensure their correct functioning. − Backfill with topsoil as specified. Lightly tamp and water thoroughly to eliminate
Allow for the costs of such tests as required. Watering
air pockets. Ensure that topsoil is not placed over the top of the root ball.
Deleterious Material Thoroughly water plants immediately after planting and at such times during the contract
Containers
Soil is to be free from noxious weeds, rocks, roots, rubbish or any other deleterious 4.0 Planting period as is required to maintain growth free from water stress
Collect empty plant containers daily during planting operations and remove from site.
material. Guying/Anchoring
4.1 Standards Spraying
Plant material should not be guyed around the trunk - root ball anchoring only.
2.6 Placing All work is to comply with the following Standards: Report any evidence of insect attack or disease amongst plant material immediately. If
so directed by Superintendent, spray with an insecticide and/or fungicide approved prior Establishment
Placement Generally − AS 4373 (1996) Pruning of Amenity Trees
− NAT SPEC Guide – Specifying Trees: A Guide to Assessment of Tree Quality to use, in accordance with manufacturer’s directions and statutory requirements. Refer to Schedule - Materials and Finishes. Trees or palms that are subject to death or
Spread and grade soil blend evenly. Ensure that, at the date of practical completion, the leaf drop in excess of 10% of the total canopy will be rejected. All trees and palms must
(2003) Locations
surface levels and profiles are as shown on the drawings. Prevent excess compaction display healthy new leaf growth by the end of the establishment period. Rejected Trees /
by construction plant. Do not vary the plant locations from those shown on the drawings unless otherwise
4.2 Quality Assurance Palms shall be replaced by and at the expense of the Contractor.
directed. If it appears necessary to vary the locations and spacing for any reason apply
The following are suggested minimum requirements: Contractor Qualifications: Minimum five years’ experience in similar work as required by for directions from Superintendent. Anti-Transpirant
− Compact lightly in 150mm thick layers. this Specification. Submit evidence of completed similar work with contact names and General
− Lightly compact soil so that the finished surface is smooth, free from lumps of soil, telephone numbers.
4.7 Plants To be applied only to street trees and advanced or Ex-Ground stock as noted in
at the required levels, ready for planting. Schedule - Materials and Finishes. Prior to removing the plants from their containers,
4.3 Fertiliser Definitions
− Allow for the thickness of mulch where required. spray on the nominated anti-transpirant to the top and underside of foliage at the
− Unless otherwise directed, dispose of surplus soil remaining on site by spreading Supply The following definitions to apply to all plants:
specified application rates. Follow manufacturer’s recommendations for application.
evenly. − Batch: means a group of plants of like size and species as identified in the plant Ensure no overspray occurs on other hard landscape elements.
Deliver fertiliser to the site in bags, branded with the type and manufacturer’s name.
Mounding in Planting Area schedule.
Types and Application The application of anti-transpirant should be repeated at intervals as per the
− Caliper: the stem or trunk diameter at a nominated point, measured 300mm above
In planting beds, mound imported soil blend at centre to promote drainage. Finish sides manufacturer’s recommendations during the Establishment Period.
Refer Schedules the top of the root ball.
to allow the thickness of mulching material to be at the same level as adjacent finished
Turfed Areas − Clean stem height: the height of the trunk above ground, which is free of branches.
surface levels. 4.10 Stakes and Ties
− Clear trunk - palms: Overall height for palms shall be based on measurement taken
Mounding in Turf Areas The following is the minimum expected: from the top of the root ball, adjacent to and perpendicular to the start of the spear Generally
Shape specified material to form mounding at designed levels and gradients. Finish − At time of preparation or not more than 48 hours before laying, spread pre-laying emergence (newest shoot/frond-tip). Use stakes and ties where indicated on the Plant Schedule.
sides to allow for specified depth of soil blend and turf. fertiliser evenly over topsoil and rake lightly into the surface. − Ex-ground: means trees grown in the ground and dug for delivery. Includes both
in-ground container grown trees and balled and bur lapped trees. Stakes
− During the Establishment Period spread establishment fertiliser evenly over the turf
2.7 Service Conduits area and then water in. − Growing-on: shall mean the process of progressively re-potting smaller plants Use durable hardwood, straight, free from knots or twists, pointed at one end. Where the
− Do not apply fertiliser to wet grass. prior to the final planting out to promote plant growth sufficient to meet the height, Plant Schedule indicates 2 stakes, locate the stakes on opposite sides of the root ball.
Supply and place 100mm diameter PVC capped conduits 350mm deep under spread and caliper size specified.
pavements (excluding vehicular pavements) to enable installation of sub-soil drainage Planting areas and Trees in Grassed Areas Driving
− Height: shall be measured from the top of the root ball, adjacent to and
and irrigation systems. Mark ends of conduits with a 6mm diameter brass pin set into Fertilise at the rates recommended by manufacturer. Do not place in contact with the perpendicular to the top of the natural foliage projection. Drive stakes 600mm into the ground on each side of the tree, either before the tree is
paving. Backfill trenches and compact. root balls. − Spread: shall be measured as the mean diameter of the horizontal branches. placed, or in such a manner as to avoid damage to the root system. Remove shattered
ends.
Plant Quality – Generally
2.8 Weed Eradication 4.4 Mulch Ties
All plants to be true to scheduled nomenclature, well formed, hardened off nursery
Eradicate weeds using environmentally acceptable methods, such as a non- General Use 50mm wide Hessian webbing. Fix ties securely to stakes in a figure eight pattern.
stock. They are to be container grown in potting mixture with a healthy root system, fully
residual glyphosate herbicide in any of its registered formulae, at the manufacturer’s Place other ties where necessary to stabilise the tree.
Provide mulch free of deleterious or extraneous matter such as soil, weeds, rocks, and established but not pot bound. The containers to be of the size and type specified for the
recommended maximum rate.
twigs. Mulch to finish level with surrounding finished levels after settlement allowances plant size nominated as set out in the Plant Schedule.
of the top soil and mulch. Place mulch clear of plant stems to avoid rotting at ground 4.11 Guying
All plants to have a well balanced branching habit and no plant is to be cut back so
level. Generally
severely that growth and development of natural form are retarded. Pruning scars to
3.0 Drainage be clean cut to leave little or no protrusion from trunk or branch and budding or grafting Use guys where indicated on the Plant Schedule install to manufacturer’s requirements.
4.5 Turf scars to be clean, with well-developed calluses. Leaves shall be of normal size, shape,
3.1 Standards Type
Supply colour, and texture for the species, with a minimum of physical or insect injuries, and to
All work to comply with the following Standards: be free from living insects, pests, and disease. All pots shall be free of weeds. Adjustable steel guys (stainless steel below planting surface) sufficient to stabilise and
Obtain turf from a specialist grower of cultivated turf. Provide turf of even thickness, support tree.
− AS 2439.1 (2007) Perforated Drainage Pipe and Associated Fittings free from weeds and other foreign matter. All turf with nut grass is to be rejected and Containers
− AS/NZS 3500.3 (2003) Plumbing and Drainage - Stormwater Drainage removed from site. Trunk Protection
All non ex-ground plants are to be grown or acclimatised in a container. Plants specified
General in pots or bags to be grown in new or sterilised recycled polypropylene containers or Adopt guying procedures which minimise damage to plant.
3.2 Subsoil Drainage
Deliver turf to the site within 24 hours of cutting and prevent from drying out. Lay within polythene bags of potting media.
General 4.12 Rootball Anchoring
36 hours of cutting. Acclimatisation
Subsoil drainage is to intercept groundwater seepage and prevent water build-up behind Use sub-surface Anchoring systems where indicated on the Plant Schedule and to
walls, in garden areas, and under pavements. Minimum Thickness All plants to be fully sun or shade hardened-off to suit their on-site growing position for a
minimum period of six (6) weeks. manufacturers requirements. Provide turnbuckles to allow for tensioning of guys.
Material 25 mm of topsoil attached.
Delivery
Subsoil drainage to be a high density polyethylene slotted corrugated subsoil drainage Installation 4.13 Tree Surgery
pipe with a minimum nominal diameter of 90 mm to comply with AS 2439.1 (2007). Lay turf parallel to slope contours with staggered, close-butted joints so that the finished Order sufficient of each species shown on the drawings to achieve the detailed planting
Carry out tree surgery work required to maintain trees on site using a tradesman skilled
Drainage gravel surround to be 10-20mm dia. Pipe to be socked in geo-textile filter turf surface is flush with adjacent finished surfaces. layouts and ensure that the supplier retains in stock sufficient additional stock for
in arboricultural techniques in a safe and progressive manner, which maintains growth
fabric. Subsoil drainage conduit to be 100mm diameter UPVC. Brass marker pins for replacement of failed, stolen, damaged, or unhealthy specimens.
Watering and condition of tree species. All work to comply with AS 4373 (1998) Pruning of
conduits set into concrete with arrow indicating the direction of conduit. Allow 1 (one) amenity trees.
marker per conduit. Irrigate thoroughly with a fine spray. Continue as necessary to maintain moisture to this 4.8 Tree Quality
depth and to maintain the grass in a healthy green condition.
Connections Prepare live materials in advance of installation to NAT SPEC Guide – Specifying 4.14 Completion of Planting
Rejection Trees: A Guide to Assessment of Tree Quality (2003) standard to ensure satisfactory
Subsoil drainage must be connected to surface drains or to the stormwater drainage Practical completion of the planting works shall include but not be limited to
system. Connections are to be thoroughly sealed. Replace failed turf and relay with new turf. performance and growth rate after planting and/or placement at project site.
establishment of turfed areas and replacement of plants and turf that have failed,
Testing vandalised, or stolen during the work prior to practical completion.
4.6 Planting 4.9 Ex-Ground Plant Material
Test all lines on completion to ensure their correct functioning.
General General 4.15 Plant Material Establishment
3.3 Surface Gully Pits Adopt planting procedures that produce healthy plants within the prevailing soil, climatic Tree surgery work required to maintain trees on site shall be carried out by a certified Period
and management environment of this project. The following is the minimum expected: Arborist skilled in arboricultural techniques, in a safe manner, to AS 4373 (2007), subject
General The Establishment period commences at the date of Practical Completion of the Works.
to prior approval from Superintendent.
Surface gully pits are to collect surface run-off and prevent ponding of water in lawn and Recurrent Works
Excavation
garden areas to AS/NZS 3500.3 (2021). Maintain horticultural practices, as well as rectifying defects that become apparent in the
[email protected] David Low Way Duplex LANDSCAPE SPECIFICATION Project No. Drawing Issue NOT FOR CONSTRUCTION
23110 LA6-002 C
9 Fort Lane Issue Date Purpose Drawn Approved
Milton Qld 4064
206 David Low Way, Peregian Beach
A 11-10-2023 DRAFT ISSUE GG AG
PO Box 287
B 12-10-2023 OP WORKS ISSUE GG AG
Paddington Qld 4064
©2023 Wild Studio Australia Pty Ltd. These C 13-12-2023 OP WORKS ISSUE GG AG
urban landscape architecture drawings are protected by copyright and may not
wildstudio.com.au Client: Adam Offermann and Madeleine Swete Kelly be amended or reproduced without authorisation.
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