Before final payment, check an accessible ramp's running slope, cross slope and surface, landings, direction changes, width, and edge protection and handrails.
Key takeaways
- Gather the approved drawings and mark measurement locations.
- Record the highest slope readings and narrowest clear spaces.
- Confirm which edge-protection method applies.
- Give each correction a location, measurement, comparison, and photo.
If the ramp is too steep, missing edge protection, or too narrow where it turns, the owner will find it, and the fix may land on the contractor's budget. An estimator who measures the ramp carefully before the owner's punch list is written can separate what is actually wrong from what only looks wrong at a walkthrough.
This post walks through the checks that matter most for an accessible ramp. It is written for estimators working from the plans, the built ramp, or both. It does not replace the design professional or the inspector. It gives you a list of measurements, a way to record them, and a sense of which items are likely to become change orders.
Keep one idea in mind: measure what is there, then compare it to the requirement that applies. A ramp can look steep and still meet the rule. It can look fine and fail on a number nobody checked.
Start with the plans and the built ramp side by side
Before you pick up a tape or level, gather the current drawings, the specification sections for the ramp and its handrails, and any approved shop drawings or change orders that touched it. Note the revision dates. A ramp built to an early revision may differ from the final sheet; compare it against the applicable requirements and approved contract documents.
Walk the route from the accessible parking or entrance to the ramp, and from the ramp to the door it serves. Mark each change in direction, each landing, each change of surface, and each point where the ramp meets a walk, curb, or building edge. Sketch these. You will return to the sketch for every check that follows.
Measure at the same points on the plans and on the built ramp. If a landing sits in a slightly different place in the field, record both positions. That difference often explains a later problem, such as a turn that now sits partly on a slope.
Decide who attends the measurements. A joint walk with the contractor and, where appropriate, the design team or inspector reduces disputes. If you measure alone, photograph each reading with a tape or rule in view.
Check the running slope first
The running slope is measured in the direction of travel. One reading on one part of the ramp says little about the rest of the run.
The U.S. Access Board's guide to ramps and curb ramps sets the basic limit at 1:12, which is 8.33 percent. The same guide recommends that providing the least possible slope below the 1:12 (8.33%) maximum offers better usability for a wider range of users. For an estimator, a ramp that measures right at the limit has no room for construction variation. A ramp designed somewhat flatter can absorb it.
Measure the running slope at several points: the center of each run, near each edge, and at the transitions. Use a digital level or a long straightedge with a level. Record the highest reading and where you found it. A ramp that averages under the limit but is steeper at one spot still has a problem at that spot.
Compare your readings with the drawing's stated slope and any tolerance the specification allows. If the specification is silent, do not assume a tolerance. Raise the question with the design team before you write the item.
A steep running slope is often a symptom. Poor grading at the base, a settled slab, or a footing set too high can each produce a ramp steeper than drawn. The measurement tells you the ramp is wrong. The cause tells you who should fix it and what it will cost.
Check the cross slope and the surface
The cross slope runs across the ramp, perpendicular to travel. It is less visible than the running slope, but it affects how a wheelchair tracks and how a user controls the chair. A ramp that pitches toward one edge can be hard to use even when its running slope is correct.
For exterior ramps, the Access Board's guide says that specifying a running slope of 7.5% maximum and a cross slope of 1.5% maximum for exterior ramps will accommodate most irregularities or variances due to construction methods or materials. That is a design recommendation, not a punch list minimum, so read it that way. Compare the built slopes with the approved design before identifying a correction.
Measure cross slope at the same points as running slope, at both edges and in the middle. Do not assume one side matches the other. Look for pooled water after rain or a hose test, and note any spot where the surface pitches sharply toward a side.
Check the surface itself. Treat these surface checks as general practice. Look for loose or broken concrete, rough finishing that could catch a caster, unfilled joints, and patches that sit proud of the surrounding surface. A surface can be within slope and still be a construction defect. A dated photo with a location note helps the owner and contractor agree on the correction.
Check the landings at the top and bottom
Landings give users a place to stop, turn, and wait, and they connect the ramp to the route beyond. When a landing is too steep, too short, or sloped in the wrong direction, the whole ramp is harder to use.
The Access Board's guide constrains the top landing. It notes that the cross slope of perpendicular connecting routes limit the slope of the ramp top landing to 1:48 (measured parallel to the running slope). The top landing is therefore not just a flat patch. A landing poured to drain toward the building can end up outside the limit where it meets a walk that also slopes.
Measure the top landing at several places, including where it meets the door or the adjoining route. Note the slope direction and whether water collects. A landing that holds water may become slippery in winter, which the owner will raise even if the measured slope passes.
Measure the bottom landing where the ramp meets the existing walk or parking surface. A rough transition can create a lip that catches a caster. Record the height and length of any lip, and photograph it next to a rule.
Check that the landings are long and clear enough for a user to stop and turn. A door swing, planter, or sign that cuts into the clear area limits maneuvering, so record it.
Check direction changes and clear space
Many ramps turn, whether to fit a tight site or to reach an entrance. The Access Board's guide sets a minimum for these points: 60″ long clear where ramps change direction (any change from linear).
Read the phrase carefully. The guide counts any change from linear, which includes a right-angle turn, a switchback, and a gentle bend that the plans may call a curve. An estimator who looks only for obvious switchbacks can miss a turn built at a slight angle.
Find each turning point and measure the unobstructed length available to stop and turn, including the full clear width. Subtract anything intruding into the space, such as a post, light, downspout, or bench added after the design was final. Record the measured length, the location, and whether the reduction came from construction or from a later change.
A landing may look large on the drawing but have been reduced in the field by a sloped transition or a wall built out of position. Photograph the turn from above where possible, and mark the clear length on the photo.
If a direction change has a handrail, check its ends and extensions at the turn. A rail extended to suit the contractor's layout may not match the drawing.
Illustrative example: record a reduced turning space
Suppose a turning space has an illustrative clear length of 50 inches against the minimum above. Record the location and obstruction, attach a measurement photo, and ask whether the reduction came from construction or a later change before pricing a correction.
Check width near drop-offs
A ramp along a planter edge, retaining wall, or grade change can push a user toward the edge while maneuvering. The Access Board's guide addresses this in its discussion of width, offering an option: consider a wider ramp width (48″ minimum) so that maneuvering does not occur near drop-offs.
The guide says "consider," so treat this as a design direction, not a universal minimum. The practical lesson still holds. A narrow ramp beside a drop leaves the user less room to correct a path, and the risk of a fall rises. Measure clear width between the inside faces of rails or curbs. Take at least three readings along each run and at the landings, and record the narrowest. Note where the drop is closest to the travel path, its height, and how the width compares with the recommendation above.
Check whether the narrowing came from the plans or from construction. If the drawing meets the guide's suggestion and the built ramp does not, that is a construction defect for the punch list. If the drawing itself is narrower, note it as a design question without assigning blame.
Check edge protection and handrails
Edge protection keeps a caster or crutch tip from slipping off the side. Document and price required edge-protection corrections. Check which method applies before testing it.
For a barrier, the guide states that rails or other barriers must prevent passage of a 4″ diameter sphere. Test this on the built ramp with a sphere or gauge of that diameter. Push it through every opening at the bottom rail, at the posts, and in any gap between rail and deck. Record each point where it passes. If the barrier is the applicable edge-protection method, record each failure for correction; the fix may be a panel, a filled gap, or a replaced mesh section. Describe each location precisely and count them so the contractor can price the work.
Alternatively, check the surface extension. The guide explains that run and landing surfaces that extend at least 12″ beyond the inside face of handrails will provide adequate edge protection by preventing wheelchair casters and crutch tips from slipping off the edge. Measure from the inside face of each handrail out to the edge of the surface. Do not assume the rail sits where the drawing shows. Measure the rail, record its location, then measure the surface beyond it.
Check the handrails for continuity, secure fastening, and a grip a user can hold. Confirm the rail runs the full length the drawings call for, and that ends and extensions match the plans. Note any loose post, any rail that moves under a hand, and any sharp terminal.
Put the measurements into a usable punch list
A punch list that says "ramp too steep" cannot be priced or fixed. A useful entry reads like this: running slope measured steeper than the plans show at the third run, near the east rail, against an 8.33 percent maximum on the drawing. A contractor can price and fix that.
Use a separate line for each item. Name the element, give the location, state the measurement, name the requirement or drawing note it is compared to, and attach a photo. Link published requirements. Cite the sheet and section for plan and specification items.
Group the items. Construction defects, such as a rail that does not match the drawing, belong in one group. Design questions, such as a width the drawing itself sets narrow, belong in another. Owner-requested changes, such as a bench placed in a turn after design, belong in a third. Owners read grouped lists faster, and contractors see which items are theirs to price.
Estimate each item in the same format. Give a range where the fix is uncertain, and state what moves the cost. A cracked landing that needs a patch costs far less than one that must be removed and repoured. Note your assumptions so the number can be revised after a second look. Use the related guide to rework costs when organizing correction estimates, and review change order pay for items handled as changes before final payment.
A punch list is not necessarily complete. Check the contract wording before assuming an unlisted item is waived, and write each item so that a missed one can be added later.
Common mistakes in ramp measurements
The first mistake is measuring once. A ramp that changes along its length needs readings on every run, landing, and turn, with the worst value recorded.
The second is measuring the wrong surface. A coating or thin topping can differ from the structural slope underneath. Measure the surface the user walks on, or note what you measured and what you assumed.
The third is trusting the drawing without checking the field. Compare the two, record the differences, and let the owner and design team resolve discrepancies against the applicable requirements and approved contract documents.
The fourth is ignoring connections. A perfect ramp that meets a walk with a sharp lip is not a finished accessible route. Include the transitions in your walk and your list.
The fifth is writing items that invite argument. Avoid "bad," "wrong," or "unsafe" without a measurement behind them. Describe what you saw, what you measured, and what the requirement or drawing says.
Final checklist before the punch list is written
Confirm that you have the current plans, specifications, and approved changes. Confirm that you have measured running slope at several points on each run and recorded the highest reading. Confirm cross slope at both edges and in the middle. Confirm the top and bottom landings, transitions, and any lip. Confirm clear space at each direction change and any intrusion. Confirm width at several points and any drop-off near the travel path. Confirm that the applicable edge-protection method meets its requirement. Confirm that each item has a location, a measurement, a comparison, and a photo.
With these in hand, the punch list is defensible. It will not prevent every dispute, but it narrows them and lets the owner, the contractor, and the design team focus on the items that must change before final payment.
Today, take the current approved ramp drawing to the ramp and document the first discrepancy you find using the punch list format above.
Common questions
Does a design recommendation establish a punch list defect?
A design recommendation alone does not establish a defect. Compare the measured condition with the applicable requirement and approved drawing before assigning corrective work.
Does leaving an item off the list remove the contractor's responsibility?
For public construction contracts covered by Florida's statute, leaving corrective work off the list does not remove the contractor's responsibility to complete the contracted services. Check the contract when identifying who must correct a later finding.