When selecting materials for urban outdoor furniture tabletops, weight is a critical factor influencing durability, stability, and installation requirements. Granite, a popular natural stone choice, typically weighs between 160-180 pounds per cubic foot (2,560-2,880 kg/m³), making it one of the heaviest options available.
Compared to other common materials:
- Marble: Lighter than granite at approximately 160-170 lbs/cu ft (2,560-2,720 kg/m³)
- Concrete: Similar weight to granite at 150-180 lbs/cu ft (2,400-2,880 kg/m³)
- Stainless Steel: Much heavier at approximately 490 lbs/cu ft (7,850 kg/m³)
- Synthetic Rattan: Significantly lighter at 15-25 lbs/cu ft (240-400 kg/m³)
- HDPE Lumber: Lightweight option at 30-40 lbs/cu ft (480-640 kg/m³)
Granite's substantial weight provides exceptional wind resistance and vandal resistance in urban settings, reducing the need for additional anchoring in many applications. However, this weight necessitates proper structural support and may require specialized equipment for installation and maintenance. The density of granite contributes to its durability against impact and weathering, though it remains more manageable than metal alternatives like steel or cast iron for most municipal projects.