CarbonBar

Testing Results

1. Material Properties 4. Bracket 2. Spanning Support 5. Floating Shelves 3. Cantilever Support 6. Rodding

Physical Property Comparison

3-Point Bend Test - 1" CarbonBar™ vs Steel vs Aluminum

3-Point Bend Test Comparison

Peak Stress Comparison

Material Peak Stress (ksi)
CFRPU 198.56
Steel 89.13
Aluminum 53.90

Material Properties

Property CarbonBar
Density (g/cc) 1.63
Tensile strength (Ksi) 272
Tensile modulus (Ksi) 24061.7
Compressive strength (Ksi) 136
Flex modulus (Ksi) 19725

Spanning Support - SVSU Test Data

Independent Test Results - SVSU

To Failure

  • Natural Stone – 450 lbs
  • Steel Bar 2.0x.375 – 1500 lbs
  • CarbonBar 2"x.20" – 4100 lbs
  • CarbonBar 2"x.40" – 8200 lbs

Deflection – 1/16"

  • Natural Stone – 350 lbs
  • Steel Bar 2.0x.375 – 600 lbs
  • CarbonBar 2"x.20" – 1500 lbs
  • CarbonBar 2"x.40" – 4000 lbs
2-Inch CarbonBar Performance Chart
Material Max Force to Failure (lbf)
Natural Stone 450
Steel 540
2" CarbonBar (0.2") 4123
2" CarbonBar (0.4") 6602
CarbonBar Outperforms Steel

Test Conclusions:

  • CarbonBar™ has enhanced support when used with appropriate adhesive (Adhesive type influences strength of the system)
  • Adhered plate/bar reinforcement can have up to a 30X increase in the load capacity of the granite (Plate reinforcement changes the failure mode of the system)
  • CarbonBar 1 layer .20" & 2 layer .40" support Carbonbar significantly outperformed the steel .375" bar adhered using silicone

Cantilever Countertop Support Testing

Extreme Overhang - 24" Overhang, 21" Support

CarbonBar 24-inch Cantilever Test Results Testing Methodology - Extreme Overhang Quartz and Granite Cantilever Test Results

CarbonBar™ outperforms Steel with both Quartz and Granite

CURRENT USE
REPLACEMENT
Steel
CarbonBar™
3/16" or 1/4"
1-layer (0.2") with STRUCTURAL ADHESIVE
3/8" or 1/2"
2-layer (0.4") with ADHESIVE

Counter-top Support bars TESTING RESULTS

The testing was conducted at the Natural Stone Institute to simulate extreme loading conditions in order to test the limits of performance.

"Within the parameters of this test program (evaluated against traditional steel reinforcement at industry maximum allowable countertop overhang conditions), the CarbonBar™ undercounter reinforcement system demonstrated both lower proportional deflection and greater resilience THAN steel in use as it expressed little to no permanent deformation post-evaluation to equivalent loading conditions."

Scott D. Scallorn, MSAG
Test Laboratory Manager
Natural Stone Institute

Bracket Testing

Bracket Testing Results
Bracket Type Load @ 0.1" Deflection (lbf) Estimated UDL per pair (lbf)
0.75" Al Bracket 100 700
1.5" Al Bracket 200 1400

Floating Shelves

Flat Shelf Testing Rocket Shelf Testing
Shelf Type UDL per pair (lbf)
Rodding/Flat Shelf 100
Gusset Shelf 160

Flat shelves and rodding rely on the same support style of a single ⅜" rod. The difference is the 2" surface on the flat shelves that is absent on the rodding.

All shelves with gussets have identical UDL values.

Rodding

Rodding Performance Comparison
Rodding Type Peak load (lb)
Steel 488.9
FiberGlass 316.2
⅜" CarbonBar 599.9