DESIGN & INSTALLATION p GUIDE v
2
BODPAVE ™ 85 PAVING GRIDS DESIGN & INSTALLATION GUIDE BodPave 85 ™ Boddingtons Inc. • 2780 Snelling Avenue N. • Suite 306 Roseville • MN 55113 Tel: 1 651-330-2920 • Fax: 1 651-797-2319 e.mail: [email protected] • www.boddingtons.us Copyright © Boddingtons. All rights reserved Optional vertical edging board or curb BGT100 Geotextile fabric (see Notes 4, 6 & 7) BodPave 85 paver cells filled to within 0.2’’ ™ of the surface with 60:40 rootzone (see Note 8) then seeded or turfed and fertilized Bedding layer: 2’’-2.75’’ thick consolidated 60:40 rootzone (see Note 8). Existing Soil Existing Soil min = Tx Tx Tensar TriAx ™ TX160 geogrid & optional BGT100 Geotextile fabric (see Tables 1, 2 & Notes 1-4 & 7) Drainage options (see Notes 2, 4, 6 & 7) Sub-base layer. Thickness (Tx) & Type as determined by Table 1 & Notes 1-5 Subgrade Soil (subsoil) (Refer to Table 1, Chart 1 & Note 5) 2’’ 2’’-2.75’’ 4’’-15’’ 1. Install edge retention as specified: Either tanalised timber boards, concrete, steel or plastic curbs as appropriate. 2. Ensure that the sand:soil rootzone bedding layer is the correct & uniform thickness, is level & well consolidated. 3. Place the paver units: With the 2 sets of edge loop connectors facing in directions of laying, place BodPave ™ 85 firmly onto the surface so that its ground spikes are pressed fully into the bedding and the base of the paver cells sit flat on the bedding layer surface. Connect adjacent pavers together by slotting the edge cell connectors down into the edge loops (LOOPS ALWAYS LEAD) & progress over the area in rows. Pavers are locked in place by snap-fit clips. If paver separation is required, clips can be dislocated using careful, firm hand or screwdriver pressure or by gently twisting the paver joints. Use protective gloves to avoid abrasions. 4. Pavers can be offset by 1 cell increments or cut to fit around obstructions & curves using a hand or power saw. The use of cut-pieces which do not have integral snap-fit connectors should be avoided wherever possible. 5. Fill pavers with specified propriety rootzone to finished levels: 0.2’’ below top of the cells after settlement. A light whacker plate may be used to consolidate the pavers and settle rootzone fill. Do not overfill or over consolidate. 6. Carry out a normal seeding, fertilizing & watering program. A light top dressing may be applied to just cover the seed and to provide adequate germination conditions. Do not overfill the paver cells. Thin-cut or Washed Turf may be lightly rolled into the surface as an alternative if required. 7. The surface may be trafficked immediately for critical access purposes, but it is preferable to allow grass to fully establish prior to use. Note 1: If Tensar TriAx ™ TX160 geogrid is omitted, the total Granular Sub-Base (GSB) layer thickness (Tx) must be increased by minimum 50%. Note 2: A class 5 sub-base may be used provided that an adequate drainage system is installed. Alternatively, a permeable/open-graded (reduced fines) sub-base layer (i.e reduced fines class 7) may be specified, e.g. as part of a LID/NPDES system for water drainage. Note 3: If construction traffic axle loads will be greater than (approx’ 6.5 Tons), minimum sub-base thickness over Tensar TriAx ™ TX160 geogrid shall be 6”. Maximum sub-base particle size should match minimum sub-base thickness but not exceed 3” diameter. For sub-base thicknesses of around 4”, a minimum 1.5” particle size should be adopted to allow effective installation of Tensar TriAx ™ TX160 geogrid. Note 4: Where drains are omitted and a 'reduced fines' sub-base is specified for LID/NPDES applications this must be covered with either a geotextile fabric (i.e. Boddingtons BGT100) and/or a clean, suitably graded gravel blinding to avoid the bedding layer leaching into the sub-base. Note 5: Specific advice on CBR% strengths, ground conditions and construction over weak ground with a CBR less than 1% is available from Boddingtons Limited. CBR% = California Bearing Ratio, a measurement of subgrade soil strength. Note 6: Typical standard drainage detail: 4” diameter perforated pipe drains laid at minimum gradient 1:100, bedded on gravel in trench backfilled with 3 / 4”drainage stone / aggregate, trench covered &/or wrapped with a geotextile fabric (i.e Boddingtons BGT100), pipes leading to a suitable outfall or soakaway. Drains installed down centre or one edge of areas up to 16’ wide. Wider areas may require additional lateral drains at 16’-32’ centers. Drainage design to be determined by the specifier based on specific site conditions. Note 7: Drainage for a LID/NPDES application will vary according to the site but generally omits the requirement for extensive pipe & trench drainage systems within the sub-base layer and may require an additional layer of BGT100 geotextile fabric at base of construction. Note 8: Rootzone bedding and paver fill must be a free-draining, structurally sound propriety blend of sand:soil or sand:compost such as used in sports/golf construction & normally identified as a 60:40 or 70:30 ratio blend. The use of site-won materials or in-situ self-blending is NOT recommended without taking further advice. Note 9: Maximum advised gradient for traffic applications: 12% (1:8) 7º. Bodpave ™ 85 has specific pegging points if required for steep slope applications. Pegging is not necessary for standard access route applications. Specific advice on the use of BodPave ™ 85 on steep slopes, drainage suitability and LID/NPDES systems for water drainage applications, can be obtained from Boddingtons Inc. BODPAVE ™ 85 INSTALLATION METHOD For Grassed Surfaces Typical Construction Profile DESIGN NOTES Data Sheet No : SDI / USB85PGS10 Issue 2
Transcript of DESIGN & INSTALLATION p GUIDE v
BODPAVE™85 PAVING GRIDS
DESIGN &INSTALLATIONGUIDEpa
ve
Bod
Pav
e 85
™
Boddingtons Inc. • 2780 Snelling Avenue N. • Suite 306 Roseville • MN 55113Tel: 1 651-330-2920 • Fax: 1 651-797-2319e.mail: [email protected] • www.boddingtons.us
Copyright © Boddingtons. All rights reserved
Optional verticaledging board or curb
BGT100 Geotextile fabric (see Notes 4, 6 & 7)
BodPave 85 paver cells filled to within 0.2’’ ™
of the surface with 60:40 rootzone (see Note 8)then seeded or turfed and fertilized Bedding layer: 2’’-2.75’’ thick
consolidated 60:40rootzone (see Note 8).
Existing SoilExisting Soilmin = Tx
Tx
Tensar TriAx™ TX160 geogrid& optional BGT100 Geotextile fabric
(see Tables 1, 2 & Notes 1-4 & 7)
Drainage options (see Notes 2, 4, 6 & 7)
Sub-base layer. Thickness(Tx) & Type as determined by
Table 1 & Notes 1-5
Subgrade Soil (subsoil)(Refer to Table 1, Chart 1 & Note 5)
2’’
2’’-2.75’’
4’’-15’’
1. Install edge retention as specified: Either tanalised timber boards, concrete, steel or plastic curbs as appropriate.2. Ensure that the sand:soil rootzone bedding layer is the correct & uniform thickness, is level & well consolidated.3. Place the paver units: With the 2 sets of edge loop connectors facing in directions of laying, place BodPave™85 firmly onto the surface
so that its ground spikes are pressed fully into the bedding and the base of the paver cells sit flat on the bedding layer surface. Connectadjacent pavers together by slotting the edge cell connectors down into the edge loops (LOOPS ALWAYS LEAD) & progress over the area in rows. Pavers are locked in place by snap-fit clips. If paver separation is required, clips can be dislocated using careful, firm hand or screwdriverpressure or by gently twisting the paver joints. Use protective gloves to avoid abrasions.
4. Pavers can be offset by 1 cell increments or cut to fit around obstructions & curves using a hand or power saw. The use of cut-pieces which do not have integral snap-fit connectors should be avoided wherever possible.
5. Fill pavers with specified propriety rootzone to finished levels: 0.2’’ below top of the cells after settlement. A light whacker plate may be used to consolidate the pavers and settle rootzone fill. Do not overfill or over consolidate.
6. Carry out a normal seeding, fertilizing & watering program. A light top dressing may be applied to just cover the seed and to provideadequate germination conditions. Do not overfill the paver cells. Thin-cut or Washed Turf may be lightly rolled into the surface as analternative if required.
7. The surface may be trafficked immediately for critical access purposes, but it is preferable to allow grass to fully establish prior to use.
Note 1: If Tensar TriAx™ TX160 geogrid is omitted, the total Granular Sub-Base (GSB) layer thickness (Tx) must be increased by minimum 50%.Note 2: A class 5 sub-base may be used provided that an adequate drainage system is installed. Alternatively, a permeable/open-graded
(reduced fines) sub-base layer (i.e reduced fines class 7) may be specified, e.g. as part of a LID/NPDES system for water drainage.Note 3: If construction traffic axle loads will be greater than (approx’ 6.5 Tons), minimum sub-base thickness over Tensar TriAx™ TX160
geogrid shall be 6”. Maximum sub-base particle size should match minimum sub-base thickness but not exceed 3” diameter. For sub-base thicknesses of around 4”, a minimum 1.5” particle size should be adopted to allow effective installation of Tensar TriAx™ TX160 geogrid.
Note 4: Where drains are omitted and a 'reduced fines' sub-base is specified for LID/NPDES applications this must be covered with eithera geotextile fabric (i.e. Boddingtons BGT100) and/or a clean, suitably graded gravel blinding to avoid the bedding layer leaching into the sub-base.
Note 5: Specific advice on CBR% strengths, ground conditions and construction over weak ground with a CBR less than 1% is available from Boddingtons Limited. CBR% = California Bearing Ratio, a measurement of subgrade soil strength.
Note 6: Typical standard drainage detail: 4” diameter perforated pipe drains laid at minimum gradient 1:100, bedded on gravel in trench backfilled with 3/4”drainage stone / aggregate, trench covered &/or wrapped with a geotextile fabric (i.e Boddingtons BGT100), pipes leading to a suitable outfall or soakaway. Drains installed down centre or one edge of areas up to 16’ wide. Wider areas may require additional lateral drains at 16’-32’ centers. Drainage design to be determined by the specifier based on specific site conditions.
Note 7: Drainage for a LID/NPDES application will vary according to the site but generally omits the requirement for extensive pipe & trench drainage systems within the sub-base layer and may require an additional layer of BGT100 geotextile fabric at base of construction.
Note 8: Rootzone bedding and paver fill must be a free-draining, structurally sound propriety blend of sand:soil or sand:compost such as used in sports/golf construction & normally identified as a 60:40 or 70:30 ratio blend. The use of site-won materials or in-situ self-blending is NOT recommended without taking further advice.
Note 9: Maximum advised gradient for traffic applications: 12% (1:8) 7º. Bodpave™85 has specific pegging points if required for steep slope applications. Pegging is not necessary for standard access route applications.
Specific advice on the use of BodPave™85 on steep slopes, drainage suitability and LID/NPDES systems for water drainage applications, can be obtained from Boddingtons Inc.
BODPAVE™85 INSTALLATION METHOD
For Grassed SurfacesTypical Construction Profile
DESIGN NOTES
Data Sheet No : SDI / USB85PGS10 Issue 2
pave
Bod
Pav
e 85
™
Copyright © Boddingtons. All rights reserved Tensar & TriAx™ are registered trademarks of Tensar International
Boddingtons Inc. • 2780 Snelling Avenue N. • Suite 306 Roseville • MN 55113Tel: 1 651-330-2920 • Fax: 1 651-797-2319e.mail: [email protected] • www.boddingtons.us
Please note that the information above is given as a guide only. All sizes and weights are nominal figures and may vary to what is published. Boddingtonscannot be liable for damage caused by incorrect installation of this product. Final determination of the suitability of any information or material for the usecontemplated and the manner of its use is the sole responsibility of the user and the user must assume all risk and responsibility in connection therewith.
BODPAVE™85 PAVING GRIDS
Chart 1: Field guidance for estimating sub-grade strengths
ConsistencyIndicator Strength
Tactile(feel)
Visual(observation)
Mechanical(test)
CBR
SPT % kN/sqm
CU
Very Soft
Soft
Medium
Firm
Stiff
Hand sample squeezesthrough fingers
Man standing willsink > 3”
<2 <1 <25
2-4 Around 1 Around 25
4-8 1-2 25-40
8-15 2-4 40-75
15-30 4-6 75-150
Man walkingsinks 2”- 3”
Man walkingsinks 1”
Utility truck ruts0.5” - 1”
Loaded constructionvehicle ruts by 1”
Easily moulded byfinger pressure
Moulded by moderatefinger pressure
Moulded by strongfinger pressure
Cannot be moulded butcan be indented by thumb
This field guide is provided as an aid to assessing the mechanical stabilisation requirements in commonly encountered site conditions. Boddingtonsaccepts no responsibility for any loss or damage resulting from the use of this guide.
Table 1: Typical Sub-base Thickness (Tx) Requirements - refer to construction profile overleaf
APPLICATION/LOADCBR (%) STRENGTH OF
SUBGRADE SOIL(see Chart 1)
DESCRIPTION DATA
(TX) DoT SUB-BASE THICKNESS (mm & inches)
(see Notes 1 - 5)
TENSAR TriAx™
GEOGRID (see Notes 1 - 3)
Fire trucks, Coachesand occasional HGVaccess
≥ 6= 4 < 6= 2 < 4= 1 < 2
100mm120mm190mm380mm
TX160TX160TX160TX160
Light vehicle accessand overspill carparking
Bedding Layer
Paver fill (seed bed)
Grass seed or turf
Fertilizer
Sub-base type
Sub-base reinforcement
60:40 rootzone (see Note 8) : 2”-2.75” thick
60:40 rootzone (see Note 8): 1.7” thick
0.01lbs/ft2 amenity blend low maintenance seed or turf as required
Pre-seed fertilizer followed up with appropriate seasonal fertiliser
Class 5 road base or a modified permeable reduced fines class 7 sub-base (Table 1 & Notes 1-5)
Tensar TriAx™ TX160 geogrid (Table 1 & Notes 1-4 & 7)-Specification on request.
≥ 6= 4 < 6= 2 < 4= 1 < 2
ProductMaterial Colour optionsPaver dimensions Installed Paver sizeNominal internal cell sizeStructure TypeCell wall thicknessWeight (Nominal)Load bearing capacity (filled)Crush Resistance (unfilled)Basal support & Anti-ShearOpen cell % Connection typeInterlock MechanismChemical resistanceUV resistanceToxicity
BodPave™85100% recycled polyethyleneBlack, Green & Natural19.7” x 19.7” x 1.97” + 1.37” ground spike19.7” x 19.7” (4 grids per 1.2yd2)Castellated 2.6” Plaque & 1.8” Round ShapedRigid-walled, flexible semi-closed cell combination0.1” – 0.2”3.4lbs/paver< 367 tons/yd2*< 275 tons *Integral 1.35” long Cross & T section ground spikes (18 per paver)Top 92% / Base 75%Overlapping Edge Loop & Cell connectionIntegral self locking Snap-Fit ClipsExcellentHighNon Toxic
100mm100mm135mm260mm
4”4.75”7.5”15”
4”4”
5.4”10.3”
TX160TX160TX160TX160
Table 2: Paving Grid Specification
Data Sheet No : SDI / USB85PGS10 Issue 2
*Research carried out by Sheffield University UK Department of Mechanical Engineering. (Rennison/Allen March 2009)
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