BUNKER SAND
Bunker: Yellow Bunker Sand (YG3B) and White Bunker Sand (W#60)
The Sand is a medium sand with 84.1% particles within the USGA recommended range of 1.0 to 0.25mm for a bunker sand. The USGA recommends a minimum of 65% particles within this range. Therefore, this Sand easily meets the USGA particle size recommendation for selecting a bunker sand.
The Sand has a minimal amount (#3%) of silt and clay at 0.9%, so crusting of the surface layer should not be a problem.
The Sand is mostly sub-angular in the very coarse and coarse sand fractions, sub-rounded in the medium and fine sand fractions, and medium sphericity in particle shape.
The Sand has a good slight off-white color.
The Sand has a penetrometer reading of 2.8 kg/cm2 which means it has a very low tendency to bury based on this fried-egg lie potential test.
The Sand is a silica sand and not a calcareous sand with a soil water pH of 6.0.
The Sand had a water permeability rate of 66.7 in/hr. when compacted by the USGA procedure ASTM F1815 to simulate a compacted golf green. This is a very adequate rate for a bunker sand. The USGA recommends a rate >20 in/hr. for a bunker sand.
Conclusion: According to USGA guidelines for selecting a bunker sand, this Sand is a very good bunker sand. This Sand is outstanding in the seven guidelines the USGA recommends for selecting a bunker sand (enclosed).
Particle size distribution of Yellow Bunker sand YG3B_Tifton Physical Soil Testing Lab_USGA
| 8#
2.36mm |
10#
2.0mm |
18#
1.0mm |
35#
0.5mm |
60#
0.25mm |
100#
0.15mm |
140-270#
0.15-0.05 |
Silt/Clay
<0.05mm |
|
| USGA Guideline | 0 | 0 | <5% | >35% | >40% | 8-13% | <1.5% | <0.5% |
| Yellow Bunker sand YG3B | 0 | 0 | 2.7% | 40.8% | 46.4% | 8.3% | 1.0% | 0.8% |
Particle size distribution of White Bunker sand (W#60 – W#30)_Tifton Physical Soil Testing Lab_USGA
| 8#
2.36mm |
10#
2.0mm |
18#
1.0mm |
35#
0.5mm |
60#
0.25mm |
100#
0.15mm |
140-270#
0.15-0.05 |
Silt /Clay
<0.05mm |
|
| USGA Guideline | 0 | 0 | <5% | No limit | >60% | <17% | <3% | <0.5 % |
| White Bunker sand (W#60 – W#30) | 0 | 0 |
