What Is a Ramp Landing?
A ramp landing is a firm, stable, slip-resistant, mostly level platform at the top, bottom, or turn of a ramp. It gives a person room to stop, open a door, or change direction. For ramps covered by ADA standards, landings must meet minimum size and slope rules; local codes and project details may add requirements.
A useful field tip: check the landing’s size, slope, and support before choosing its finish. I have seen plans focus on tile or coating while missing a weak subfloor or a tight turn. A finish cannot make an undersized or unstable landing safe. Start with the platform and its structure, then select a compatible surface.
What a ramp landing does
A ramp landing is a level or gently sloped platform that connects a ramp to a building, another ramp, or a change in direction. It provides a place to pause and maneuver. It is not the sloped section people travel along, and its dimensions and slope have separate rules.
The landing can be at the bottom, top, or turn of a ramp. It may also sit by a door. In that case, the door’s required maneuvering space must fit without blocking the landing’s usable area.
“Level” does not always mean perfectly flat. Under ADA criteria, a landing may slope no more than 1:48 in any direction. That is a rise or fall of 1 inch over 48 inches, or about 2.08%.
A ramp’s running slope and cross-slope are different measurements. The running slope follows the direction of travel; cross-slope runs across the ramp. Do not apply the landing’s 1:48 limit to the ramp itself. Check the applicable ramp limits separately.
How large must a ramp landing be?
For ramps covered by the ADA Standards, a landing must be at least as wide as the ramp and at least 60 inches long in the direction of travel at the top and bottom. Where the ramp changes direction, provide a landing at least 60 by 60 inches. Confirm the rules for your project and location.
| Landing location or feature | ADA minimum dimension |
|---|---|
| Top or bottom of ramp | At least ramp width × 60 in. long |
| Change in direction | At least 60 × 60 in. |
| Landing slope | No steeper than 1:48 in any direction |
Sixty inches equals 5 feet, or about 1525 mm. These are minimums for covered facilities, not a guarantee that every layout will work. A wheelchair user may need more room to turn, and a door can require extra clear floor space.
Measure the clear area that remains after accounting for walls, door swings, handrails, and other fixed features. A landing can meet its nominal dimensions on a drawing yet lose usable space when a door opens into it. Have the plan reviewed against the applicable accessibility and building rules before construction.
Ramp-landing substrate inspection and subfloor preparation
The substrate is the structure or surface beneath the finished floor. It must be sound, stable, clean, and suitable for the chosen flooring system. Before installing a finish, check the landing’s size, slope, drainage, framing or slab, moisture, cracks, and transitions to nearby surfaces.
For a wood-framed landing, confirm joist span, panel thickness, fastening, and support at panel edges. Tile needs a stiff base: the structure must meet at least L/360 deflection for ceramic or porcelain tile, and L/720 for natural stone. “L” is the span; the ratio describes the maximum allowed bending under the relevant load. Follow the tile and underlayment system requirements as well.
For concrete, look for cracks, loose material, old coatings, and signs of moisture. There is no single moisture-vapor or in-situ relative-humidity limit that applies to every flooring adhesive. Use the specified ASTM test method and the limit published for the selected product.
Correct flatness with a compatible patch or leveling product. For tile, a commonly used ANSI A108 tolerance is 1/4 inch in 10 feet and 1/16 inch in 1 foot for tile with edges under 15 inches. Large-format tile needs tighter flatness. Check the current standard and product instructions. A membrane can help with a specified use, but it cannot fix weak framing or structural movement.
Installation technique, bonding, and surface precision
A flooring system works when each layer is approved for the layer below it and the conditions at the landing. Follow the product instructions for primer, membrane, mortar or adhesive, seams, cure time, and temperature. Do not rely on a coating or membrane to hide a wet, unstable, or poorly prepared base.
A practical sequence is:
- Inspect dimensions, slope, door clearance, drainage, framing or slab, cracks, and moisture.
- Remove dust, coatings, and other bond breakers. Repair damaged areas with compatible materials.
- Install the specified underlayment or membrane, including required seam and edge details.
- Set the flooring with the specified bonding method. Keep required movement joints open and functional.
- Check the finished surface and transition before opening the landing to use.
For tile, aim for at least 80% mortar contact in dry interior areas and 95% in wet or exterior areas, with support at every edge and corner. Lift tiles during installation to check coverage. Do not “spot-bond” tile by placing isolated blobs of mortar beneath it. Unsupported areas can raise the risk of cracks, debonding, and uneven edges.
Movement joints allow materials to expand, shrink, or shift without forcing the surface to crack. Detail them according to TCNA EJ171 and the selected system instructions. Do not bridge a structural or designated movement joint unless the system specifically allows it.
Transitions, accessibility, safety, and deflection compliance
A transition is the meeting point between two surfaces, such as a ramp and landing. It should be stable and flush enough to avoid a catch point, while preserving the required slope and clear space. Check the governing accessibility rules for any permitted level change or edge detail.
Movement or flex at the ramp-to-landing edge is a key risk. Tile can crack, come loose, or form a raised edge if support changes abruptly or framing moves. An uncoupling membrane does not make an under-supported floor structurally sound.
Choose a surface appropriate for the location and expected use. ANSI A326.3’s DCOF value of 0.42 is a benchmark for certain level interior floors; it does not prove a surface is safe on a ramp or landing. Verify applicable safety requirements and product suitability. Keep drainage in mind outdoors, while ensuring the landing remains within its permitted slope.
| Situation | What to check before choosing or installing a finish |
|---|---|
| Tile over wood framing | Deflection, panel support, flatness, and approved underlayment |
| Tile over concrete | Crack condition, moisture, bond, and compatible membrane or mortar |
| Wet or exterior tile | At least 95% mortar coverage, edge support, drainage, and suitable surface |
| Ramp meets landing | Stable support, flush transition, slope, and movement-joint details |
| Door opens onto landing | Clear maneuvering space and door-swing requirements |
Practical ramp-landing examples
These examples show how the same landing requirements apply to different site conditions. They are planning scenarios, not reports of specific completed projects. In each case, the builder should verify local code, site measurements, and the instructions for the selected materials.
Exterior concrete landing: A ramp reaches a concrete platform at a building entrance. The crew checks the landing’s clear width and length, slope, drainage, cracks, and moisture before installing a finish. If tile is selected, the installer uses products approved for the concrete and exposure, preserves movement joints, and checks mortar coverage.
Wood-framed landing at a turn: A framed platform connects two ramp runs. Before tile work, the builder verifies joist stiffness, panel thickness, fastening, and edge support. If the framing does not meet the tile system’s requirements, adding a membrane alone is not a remedy; the structure needs a suitable correction first.
Landing by a door: A platform meets the ramp at an entry where the door swings over part of the floor. The designer checks both the landing dimensions and the required door maneuvering space. If the door swing reduces usable clearance, the layout may need to change even if the landing’s overall length and width meet minimums.
Maintenance and long-term surface protection
A landing stays safer when its surface remains intact, clean, and free of loose edges. Inspect it after installation and during routine upkeep. Pay special attention to cracks, lifted tile, failed grout, worn coatings, and changes in the transition to the ramp.
Repair the cause, not just the visible symptom. A crack or loose tile may point to movement, moisture, poor bond, or inadequate support. Sealing can protect some materials when the product calls for it, but sealer does not correct structural movement or replace a failed bond.
Frequently asked questions
Is a ramp landing always completely flat?
No. Under ADA criteria, a landing may slope up to 1:48 in any direction. That equals about 2.08%. Check the rules for the project, and distinguish the landing slope from the ramp’s running slope and cross-slope limits.
How long does an ADA ramp landing need to be?
At the top and bottom of a ramp covered by ADA standards, the landing must be at least 60 inches long in the direction of travel. It must also be at least as wide as the ramp. Other project rules may require more space.
How big is a landing where a ramp turns?
For a change of direction covered by ADA standards, provide a landing at least 60 by 60 inches. The turning area must remain clear. Walls, door swings, and other fixed features can reduce usable space, so check the full layout.
Does a ramp landing have to be wider than the ramp?
ADA criteria require the landing to be at least as wide as the ramp. A wider platform may be needed for a turn, door clearance, or site-specific use. Confirm the applicable code and measure the clear space after fixed features are considered.
Can I install tile on a ramp landing?
Yes, if the structure and substrate support the tile system and the selected surface suits the location. Check deflection, flatness, moisture, bonding products, movement joints, and traction requirements. Tile cannot compensate for weak framing or an unstable slab.
What does L/360 mean for a tile landing?
L/360 is a structural deflection limit. “L” means the span, and the ratio limits how much the structure may bend under the relevant load. Tile generally needs at least L/360 support; natural stone generally requires L/720. Verify the full system requirements.
Does a membrane fix cracks or a flexible landing?
Not by itself. A membrane may be approved for certain crack or movement conditions, but it cannot correct inadequate framing, unstable panel edges, or a structural joint that has not been properly detailed. Fix support problems before installing the finish.
What mortar coverage does tile need on a landing?
Target at least 80% mortar coverage for dry interior tile and at least 95% for wet or exterior tile, with full support at edges and corners. Lift tiles during installation to check. Follow current standards and the product instructions for the specific system.
Is a DCOF of 0.42 enough for a ramp landing?
Not necessarily. ANSI A326.3’s DCOF of 0.42 is a benchmark for certain level interior floors, not proof that a surface is safe on a ramp or landing. Confirm the applicable safety rules and choose a surface suitable for the actual use.
What should I check before building a ramp landing?
Verify the landing’s dimensions, slope, door and turning clearance, drainage, substrate condition, framing or slab, moisture, and transition details. Check local code and the project type. For tile, also verify deflection, flatness, compatible materials, and movement-joint requirements.
(This article was written by one of our staff writers, Marcus Vance. Visit our Meet the Team page.)
