landscape walls. raised bed prevent erosion landscape walls level planting areas

LANDSCAPE WALLS

LANDSCAPE WALLS

• Raised bed

• Prevent erosion

LANDSCAPE WALLS

• Level planting areas

LANDSCAPE WALLS

• Limit to 4’ high

• Course: row of material along the wall

WALL LAYOUT

• Locate the front of the wall and stake

• Offset stakes to allow room to work

BASE PREPARATION• Base is ¾” to 1” crushed stone

– 6” deep– 12” wider than wall

• Vibratory plate

BASE PREPARATION

• The first course will be below grade to improve stability

BASE PREPARATION

DRAINAGE BEHIND WALLS

• Wall failure often due to water build-up

• Weepholes every 6 to 8 feet

DRAINAGE BEHIND WALLS

• Drain tile on walls that exceed 2’• Drainage gravel around drain tile

DRAINAGE BEHIND WALLS

DRAINAGE BEHIND WALLS

DRAINAGE BEHIND WALLS

Drainage

• http://www.youtube.com/watch?v=oSlUy18Vttk

LANDSCAPE FABRIC

• Fabric placed behind wall

• Reduce soil movement through material

• Optional

BACKFILL

• Backfill with soil after every couple of courses

STABILIZTION

STABILIZTION

STABILIZTION

STABILIZTION

STABILIZTION

Batter is the leaning or stepping back of a wall

• Stepping: 1 to 2” for each foot of wall height

STABILIZTION

Batter is the leaning or stepping back of a wall

• Leaning: ¼” fall from front to back

STABILIZTION

Anchoring• Verticals: vertical timbers in front of

wall

STABILIZTION

Nope.

STABILIZTION

Anchoring• Deadman: horizontal anchors built

into the hill

STABILIZTION

Deadman

STABILIZTION

Deadman Stabilization

• http://www.youtube.com/watch?v=MSbYdfLa15Y

STABILIZTION

Anchoring• Geogrid: geotextile anchors, like

deadman

DRAINAGE BEHIND WALLS

Geogrid

• http://www.youtube.com/watch?v=WFJ7CnYbppg

STABILIZTION

Terracing: short walls stepped back from each other

Terracing Wall

Terracing Wall

LANDSCAPE TIMBERS

• 6” x 6” or larger• Treated lumber

– Railroad ties treated with creosote

LANDSCAPE TIMBERS

Vertical Construction

• Trench equal to the height of wall

• Staggered in height for interest

LANDSCAPE TIMBERS

Vertical Construction

• Attach 2x6 along the back

LANDSCAPE TIMBERS

Vertical Construction

LANDSCAPE TIMBERS

Vertical Construction

LANDSCAPE TIMBERS

Vertical Construction

LANDSCAPE TIMBERS

Horizontal Construction

Stacked method

• Vertical seams line up

LANDSCAPE TIMBERS

Horizontal Construction

Stacked method

• Install vertical timbers at seams

LANDSCAPE TIMBERS

Horizontal Construction

Stacked method

• Timbers are anchored with 12” spikes or ½” rebar

LANDSCAPE TIMBERS

Horizontal Construction

Staggered method

• Seams like brickwork

• Support with batter and spiking

BLOCK WALLS

Pinned blocks

• Pins lock courses together

BLOCK WALLS

Pinned blocks

• Fill spaces with stone

BLOCK WALLS

Pinned blocks

BLOCK WALLS

Lipped blocks

• Lip on bottom-back provides stability and batter

• Glue capstones

BLOCK WALLS

Lipped blocks

BLOCK WALLS

Free blocks

• Glue blocks together

BLOCK WALLS

Giant blocks

BLOCK WALLS

Giant blocks

DRY-LAID STONE

• Installed without mortar between the stones

• Irregular thicknesses

DRY-LAID STONE

DRY-LAID STONE

MORTAR STONE WALL

MORTAR STONE WALL