SIENASTONE® SMOOTH Walls and Verticals | Unilock Ontario
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SIENASTONE SMOOTH

Bold and dramatic, this large scale wall block (smallest unit weighs 380lbs each) strikes an impressive profile when used for a heavy-duty retaining wall or as treads in large outdoor staircases. The long lines and split face of SienaStone makes it an attractive alternative to more utilitarian-looking wall blocks. Build gravity walls up to 10ft (3m) or grid reinforced walls up to 40ft (12m) high with proper engineering under typical conditions. Coping units are also available.

SienaStoneSmooth 120x180x375 Stand38 GraniteBlend
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SienaStoneSmooth 120x180x375 Stand38 GraniteBlend
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SIENASTONE SMOOTH

Bold and dramatic, this large scale wall block (smallest unit weighs 380lbs each) strikes an impressive profile when used for a heavy-duty retaining wall or as treads in large outdoor staircases. The long lines and split face of SienaStone makes it an attractive alternative to more utilitarian-looking wall blocks. Build gravity walls up to 10ft (3m) or grid reinforced walls up to 40ft (12m) high with proper engineering under typical conditions. Coping units are also available.

Colors
Applications
Coping
Steps e1632317091683
Step
Steps
Structural Wall e1632317087703
Structural Wall
Shape and size
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STEP 48"
1,200mm x 180mm x 500mm
47 1/4" x 7" x 19 3/4"
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STEP 48"
1,200mm x 180mm x 500mm
47 1/4" x 7" x 19 3/4"
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STEP 48"
1,200mm x 180mm x 500mm
47 1/4" x 7" x 19 3/4"
img
STEP 72"
1,800mm x 180mm x 500mm
70 7/8" x 7" x 19 3/4"
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STEP 72"
1,800mm x 180mm x 500mm
70 7/8" x 7" x 19 3/4"
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STEP 72"
1,800mm x 180mm x 500mm
70 7/8" x 7" x 19 3/4"
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CLOSED END LEFT
1,200mm x 180mm x 383mm
47 1/4" x 7" x 15"
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CLOSED END LEFT
1,200mm x 180mm x 383mm
47 1/4" x 7" x 15"
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CLOSED END RIGHT
1,200mm x 180mm x 383mm
47 1/4" x 7" x 15"
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CLOSED END RIGHT
1,200mm x 180mm x 383mm
47 1/4" x 7" x 15"
img
COPING
1,200mm x 180mm x 383mm
47 1/4" x 7" x 15"
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COPING
1,200mm x 180mm x 383mm
47 1/4" x 7" x 15"
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CORNER DOUBLE UNIT
975mm x 180mm x 375mm
38 1/2" x 7" x 14 7/8"
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CORNER DOUBLE UNIT
975mm x 180mm x 375mm
38 1/2" x 7" x 14 7/8"
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WALL STANDARD
1,200mm x 180mm x 375mm
47 1/4" x 7" x 14 7/8"
img
WALL STANDARD
1,200mm x 180mm x 375mm
47 1/4" x 7" x 14 7/8"

Product Gallery

Sienastone Walls Natural 0812
Sienastone Walls Natural 4821
Sienastone Walls Natural HondaDealer
Technologies
Technologies
Classic
Classic Coat
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Classic

Our budget-friendly, Unilock Classic pavers and walls are manufactured to exceed as ASTM standards for quality and strength. Available in classic shapes and styles, these products utilize a traditional product mix of large and small aggregates, that is consistent from top to bottom, with color mixed throughout.

Our technologies
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Classic Coat

Classic Coat helps protect the surface texture and enhances the color of Classic products. For purchasers who prefer the look of a sealed project, these factory-sealed products save the time and expense of after-market sealing.

Our technologies
Colors
GRANITE
DUSK
SAFARI
Pick a color
GRANITE
DUSK
SAFARI
Information
Information
Packaging

SienaStone Smooth

SienaStone is an engineered large module (min 500 lbs/250 kg ea.) retaining wall system with incredible capacities for both gravity walls and reinforced walls. SienaStone is mostly used in commercial applications or in residential applications where higher and stronger structural walls must be constructed.

Applications – Structural retaining walls for large embankments.

Capacity – Gravity walls up to 13’ (4m). Geogrid reinforced walls up to 39 ft. (12m).

Recommended Base Stabilization – one layer of DriveGrid stabilization grid between subgrade and base material. Use under Standard Base or Permeable Base.

Standard Base – Min. 6” – 8” of ¾” Crusher Run gravel (any road base standard in accordance with ASTM-D2940) compacted to 98% Standard Proctor Density (SPD).

Alternative Permeable Base – Min. 6” – 8” of ¾“ clear open-graded stone compacted to achieve full particle lock-up and consolidation. (Clear open-graded does not compact but does consolidate slightly by rattling the particles together.)

Leveling – Install SienaStone directly on a compacted granular base. Install level end to end as well as front to back. Poured concrete leveling pads, reinforced with rebar, are also a great way to accomplish leveling, especially for larger installations. You must ensure that the concrete is poured and finished perfectly in order to achieve a good visual appearance.

Connection – features a tongue and groove connection. Use appropriate concrete adhesive for connection between units where the key has been removed or for corners. Always read adhesive manufacturers’ directions prior to gluing.

Handling – This is a mechanically placed wall system. Special clamps for lifting are available for use during project.

Coping - This wall requires the SienaStone specific coping. Coping attaches with tongue and groove connection. No adhesive required.

Unit Thickness (mm)
Layers per Bundle
FcFt per Bundle
FcFt per Layer
FcFt per Unit
Lbs per Bundle
Lbs per Layer
Lbs per Unit
WALL STANDARD
180
3
20.93
6.98
2.33
3,546
1,182
394
CORNER DOUBLE UNIT
180
3
15.71
5.24
5.24
1,944
648
648
COPING
180
3
20.93
6.98
2.33
3,665.87
1,221.96
407.32
STEP 48"
180
3
13.95
4.65
2.33
3,241.50
1,080.50
540.25
STEP 72"
180
2
6.97
3.49
3.49
1,596.44
798.22
798.22
CLOSED END RIGHT
180
3
20.93
6.98
2.33
3,665.87
1,221.96
407.32
CLOSED END LEFT
180
3
20.93
6.98
2.33
3,665.87
1,221.96
407.32

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