landscapeestimating

tools

March 6, 2019 Central Region Eye Opener

scenario 1

Yourcustomerisaskingabout

wallproducts.Whatquestionsdoyouasktodetermine

therightproduct/system?

1.   Type of wall – freestanding, garden or retaining.

2.   How high? 3.   Are there curves? 4.   What’s going on top of the wall?

Proterra™OrtanaCastlerok2

freestanding walls

1110mm(44”)

2000mm(79”)

freestanding walls

525mm(21”)

Heightsarelimitedbywindloads.

garden (gravity) walls

Gardenia

ModecoModan

Fieldstone

under ideal conditions…

20.4”510mm

This chart gives you general height details based on ideal conditions (stable native soil with no slopes or loads/surcharge above the wall). If your project has non-ideal conditions, or for if you need information on using Anchorplex™ or geogrid to build higher walls, contact Oaks.

but your manual said...

ideal conditions

Notraffic,slopes,guards,fences,secondwallabovethewall

Importedgranularbackfill

Stablenativesoils,noissueswithgroundwater

Noslopes,waterbelowthewall

Proterra

retaining walls

Ortana

why not gardenia or fieldstone?

Gardeniaand

Fieldstonehave

arearlip

interlockthat

doesnotwork

wellwithgeogrid

geogrid

Step1–Layoutthegrid.

Step2-Setnextcourseontopofgeogrid,thenpullunitforwardtoensureinterlockisengaged

Step3-Pullgeogridbacktaughtandstakeintoplace.

Step4–Backfillontopofgrid,andcompact.

ortana

Wall: Ortana, Greyfield with Matrix, Ravenstone Black inset Paver: Presidio, Champagne with Matrix, Ravenstone Black inset

proterra™

proterra™ split system

Double units are only sold in combos: one double plus its corresponding

standard

Triple Units is Manufactured

Split once

One Double Unit plus One Standard Unit (each with one split face and one smooth face)

Standards are sold individually

Split twice

Three Standard Units (one double sided split, two with one split face

and one smooth face)

stabilized backfill Nofinesconcretethat:1.  Increasestheoverallmassofthewall

structure.2.  Servesasthedrainagelayer.

Geogridisusedtoconnectthetwomaterials.

when to use multi-depth or stabilized walls

Whenthereislimitedroombetweenthetopofwallandpropertyline,andtheneighborwon’tletthegridextendontotheirproperty.

Whenworkingbelowunstableslopes.

when to use multi-depth or stabilized walls

1300mm 1900mm

when to use multi-depth or stabilized walls

Wherelargetreesorpoolsareplannedbehindthewall

1.   Product / system 2.   Surcharge 3.   Length of wall 4.   Elevation of wall Site Plan

scenario 2

Yourcustomerwantsaninitialestimate.

Whatinformationisneeded?

typical surcharge conditions

1.  Pedestrian(50psf)2.  Commercialpedestrian

orlightvehiculartraffic(100psf)

3.  Heavyvehiculartraffic(250psf)

4.  3H:1Vslope5.  Pedestrianwith

a6’highprivacyfencebehindthewall.

site plan

Basisforlengths

Topandbottomofwallelevations

site plan

site plan

geosynthetic reinforcement: things to know ChartsbasedonStratagridSG200.Geogridsarenotinterchangeable.Connectiontestingisrequiredforeachwallblockandgridtype.

Geogridsneedstoextendtowithin25mm(1”)ofthefrontoftheblock(unlessotherwisespecified).

geosynthetic reinforcement: things to know

Rulesofthumb

1.  Length-60%ofTOTALwallheightor1,200mm(4’)minimum

2.  Spacing–600mm(2’)maxspacingassumingunits>254mm(10”)deep.

3.  Toprowshouldbewithin2coursesoftheCoping.

4.  Bottomrowshouldbewithin2coursesoftheLevellingPad.

terraced walls: things to know

Upper wall needs to be 2x the height of the

lower wall away to be treated independent

simple walls with proterra™

Use our Preliminary Cross Sections

ordering proterra™ multi-depth

Two “extra” standard units can be used to create a double unit – just make sure they are sandwiched between full double units

Triple units do not have a split face. Use alternating Double Combos where the exposed face needs to be split.

Triples can be used in buried portions of the wall (as the split face is not needed and it is easier to level the single unit).

ordering proterra™ multi-depth

Double Combo Triple

Double

Double

Standard Standard Two “Double Combos” is the equivalent

of three individual Doubles.

scenario 3

Contractorneedsadetailedestimatefor

ordering.

(Howdetailed?)

Nottoworry.

VESPA mechanically stabilized earth design software

resources: VESPA design software

Identify each of the walls on the site plan. Each will be designed separately within VESPA

resources: VESPA design software

0m

9m 14

m 1

9 m

32m

48

m

TOW

BOW

Figure out which side is the top of wall (TOW).

Wall layout is usually based on

the visible side of the wall (Standing at the bottom of the

wall looking towards it).

The starting point for the chainage (length= 0m) is the

far left side of the wall.

Scale off the length of the wall, as well as each location that a TOW and/or BOW elevation is

provided.

resources: VESPA design software

Can select Proterra or Ortana…

… and specify the batter

resources: VESPA design software

Softwarefillsoutthewallblocklocationswithintheprofile,panelsbasedonTOWandBOWelevations.

Reddashed–burieddepth

Red-BOW

Green-TOW

resources: VESPA design software Crosssectionsgeneratedforeachpanel

resources: VESPA design software SoftwarecangenerateaPDFformat

ProjectMaterialSummary

resources: VESPA design software

resources: VESPA design software

Standard Units – take the Facing Area in square metres, divide by 0.185 (face area of one unit – 185mm x 1000mm), then subtract the number of corners needed. e.g. 78/0.185 = 422 – 13 (corners – previous slide) = 409

resources: VESPA design software

Geomaterial requirements

Aggregate requirements

how to provide the required information We want to make sure we have all the required information. Complete form and return with a site plan. We need to know: 1.  Height 2.  Surcharge 3.  Tiered 4.  Railing or fence 5.  Native soil type 6.  Slope below the wall 7.  Presence of water 8.  Drainage discharge options

“GIGO” (Garbage in = Garbage Out) By providing all the correct info up front, we can provide the most accurate plan output, the first time around.

resources: VESPA design software TransfertoAutoCAD

resources: VESPA design software ConstructionDrawings

questions anyone

?

questions anyone

? Contact your local Oaks rep,

we’re always happy to help!

March 6, 2019 Central Region Eye Opener

FOR JOINING US TODAY Thank You!Thank You!