60mm vs 80mm Pavers: Thickness and Application
Compare 60 mm and 80 mm concrete pavers with residential traffic, aspect ratio and pavement support in view, instead of choosing by thickness alone.
60 mm and 80 mm describe unit thickness, not complete pavement capacity. Suitable 60 mm concrete pavers can be used in pedestrian and applicable residential driveway contexts. Broader vehicular applications commonly use 80 mm or thicker units, with unit geometry and the whole pavement design also controlling suitability.
Compare the thickness in context
| Thickness | Approximate inch conversion | Application question |
|---|---|---|
| 60 mm | 2.36 in, commonly described as 2⅜ in | Is the exact unit appropriate for pedestrian or limited residential vehicle use? |
| 80 mm | 3.15 in, commonly described as 3⅛ in | Does the selected unit and full assembly suit the intended vehicle loading? |
The common fractions are nominal labels, not exact conversions. Use the manufacturer’s actual product dimensions in excavation and layout calculations.
CMHA PAV-TEC-010 distinguishes pedestrian and residential driveway use from other vehicular applications. Do not compress that context into “60 mm for patios, 80 mm for driveways.” Heavy-duty uses need their own design and may use thicker products still.
Check length-to-thickness aspect ratio
Aspect ratio here is overall unit length divided by thickness, using the same units. It is not length divided by width. Longer, thinner units have different application considerations from compact units of the same thickness.
Illustrative dimensions: a 200 mm-long, 60 mm-thick unit has ratio 200/60 ≈ 3.33. A 200 mm-long, 80 mm-thick unit has ratio 2.50. A 400 mm-long unit at 80 mm has ratio 5.00. These are geometry examples, not approvals of specific products.
CMHA’s application context differentiates limited residential automobile use from broader vehicle use when considering aspect ratio. Confirm the exact manufacturer’s application limits and the applicable project specification; a thickness label alone cannot establish suitability for a long slab or mixed-size system.
Unit quality and pavement design are separate checks
ASTM C936/C936M is a specification for solid concrete interlocking paving units. A unit specification does not set the required base, drainage, subgrade treatment, waste or project quantity. A compliant unit can still be used in an unsuitable assembly.
Record vehicle types, repetition, braking, turning and any concentrated loads. The supporting ground, selected driveway base, bedding, joint fill and restraints all remain relevant when moving from 60 mm to 80 mm.
What a thickness change does to the takeoff
If length and width remain the same, thickness alone does not change face-area pieces per square foot. It changes the layer stack, product mass, delivery handling and potentially package data. Recheck excavation and supplier packaging rather than assuming the same pallet count or weight.
Joint fill depth also does not automatically become the full unit thickness. Use the selected joint product’s required depth, accounting for the intended top finish and actual geometry.
Verify the exact product
Obtain the product sheet, actual dimensions, approved applications and laying instructions. For multi-size packages, check the largest unit’s context as well as the smallest. Resolve pavement design for the actual use before changing thickness purely as a perceived safety margin.
Enter the selected unit and traffic context in the Paver Driveway Calculator. Compare its source-scoped dimensional guidance with the manufacturer’s specifications and the established base design.
Sources and scope
- CMHACMHA PAV-TEC-010-22: Application Guide for Interlocking Concrete Pavements
Application, thickness, aspect ratio, and pavement system context; unit thickness alone does not approve a project.
- ASTM InternationalStandard Specification for Solid Concrete Interlocking Paving Units
Solid concrete interlocking paving unit specification; not pavement design or project quantity.
- PaverPlanCalculation methodology
Derived area, repeating-module, volume, and unit-conversion calculations. Worked examples are illustrative inputs.
Material specifications, construction guidance and product instructions have different scopes. Example inputs demonstrate calculations; they are not project defaults.