Design decision
Why this idea works
The stair looks open because a continuous side wall carries it, which is engineered structure rather than a decorative edge. That side wall, its reinforcement, and its connection to the treads are what let the modern entry stair appear light while staying safe.
- The tradeoff
- The layout sets a clear direction, but it also commits the project to fixed relationships. Engage a qualified structural professional to design the side wall and the open entry stair first.
- How to measure it
- Conceptual range: an engineered stair; treat the flight and its structural side wall as designed structural elements.
On your property
Plan it for your site
Keep the treads broom-finished for traction and the side wall and tread faces clean so the open look reads, and let a professional define the structure. Round the nosings, keep steps uniform, and confirm the landing, drainage, and any guard in the design.
- Treat the open entry stair as a structural system a professional must design.
- Confirm the continuous side wall, reinforcement, and connections carry the loads.
- Keep treads broom-finished and uniform, and confirm the landing, drainage, and any guard.
Before forms are set
Build implications
- Confirm before estimating A qualified structural design for the side wall and open stair.
- Confirm before estimating Reinforcement and connections sized by a professional.
- Confirm before estimating Uniform steps, a proper landing, traction, drainage, and any required guard.
- 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
Can a side wall really support an open stair?
Yes, a continuous structural side wall can carry the treads, but its design, reinforcement, and connections must be engineered. A professional defines the support.
Is this a job for a contractor alone?
The structural design needs a qualified professional; a contractor then builds to that design. Do not treat an open stair as an ordinary pour.
- Best when
- Engineered feature stairs
- Reconsider when
- Reconsider the idea if finished elevations, consistent stair geometry, drainage, and safe support cannot be resolved on the property.
- Verify first
- Engage a qualified structural professional to design the side wall and the open entry stair first.
- 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.
