Design decision
Why this idea works
Running the steps between low retaining walls gives a modern hillside climb clean lines and holds the grade so each flight sits true. The structured grasses soften the walls and the uniform steps keep the climb safe and comfortable.
- The tradeoff
- The layout sets a clear direction, but it also commits the project to fixed relationships. Build the retaining walls with drainage and keep steps uniform before finishing.
- How to measure it
- Conceptual range: the stepped flight plus the low retaining walls figured separately by length and height.
On your property
Plan it for your site
Broom-finish the treads for traction and round the nosings, and keep every riser and tread uniform between the walls. Build the retaining walls with drainage and footings, cast the steps on a compacted base, and manage runoff down the slope.
- Keep every riser and tread uniform between the walls so the climb is predictable.
- Build the retaining walls with drainage and footings below frost.
- Cast the steps on a compacted base and manage runoff down the slope.
Before forms are set
Build implications
- Confirm before estimating Uniform steps between the walls within code limits.
- Confirm before estimating Retaining walls with drainage and footings below frost.
- Confirm before estimating A compacted base and managed runoff.
- Measure the site and establish elevations Record boundaries, thresholds, grade changes, utilities, and the dimensions of vehicles, furniture, equipment, or structures that affect the layout.
- Test how the space will be used Check walking routes, turning paths, door swings, working clearances, maintenance access, and the route back to the house or street.
- Resolve drainage, services, and structural support Decide where water goes and coordinate drains, conduit, irrigation, fuel, electrical work, footings, and independent supports before forms are set.
- Define and estimate each concrete element Confirm the slab or footing section, base, joints, edges, and finish, then estimate simple measurable fields separately from steps, walls, drains, and supported features.
Prevent these problems
- Fixing risers before final elevationsFinish layers at the landing or threshold can change the first or last riser and create an uncomfortable or unsafe flight.
- Allowing one irregular stepUsers expect a repeated rhythm; a single different riser height or tread depth is a common trip hazard.
- Treating open-looking stairs as ordinary flatworkCantilevered, folded, open, or suspended concrete stairs require engineered support, reinforcement, connections, and guard details.
Next step
Turn the idea into your estimate
Enter measurements from the property. The conceptual image does not provide a takeoff.
Estimate similar stepsQuestions this idea raises
Do the retaining walls need engineering?
Low walls on stable ground may be within a competent installer, but taller walls holding a real grade become structural. Confirm the height threshold and drainage.
Why run steps between retaining walls?
The walls hold the grade so each flight sits level and give the hillside climb clean modern lines. Build them with drainage as real retaining elements.
- Best when
- Hillside steps
- Reconsider when
- Reconsider the idea if finished elevations, consistent stair geometry, drainage, and safe support cannot be resolved on the property.
- Verify first
- Build the retaining walls with drainage and keep steps uniform before finishing.
- Professional input
- Qualified concrete contractor; engineer for suspended, cantilevered, or supported stairs
Sources and further reading
- International Code CouncilModel-code context for residential stairs and local code adoption.
- U.S. Access Board: Ramps and curb rampsUseful accessibility context when a grade change may need a ramp rather than steps.
- American Concrete InstituteTechnical references for concrete practice and reinforced structural work.
