6. SpecificationsUT20 UT30Measurement height 6 m (20 ft) 10 m (30 ft)Shipping weight 23 kg (50 lb) 29 kg (65 lb)Material Hardened drawn 6063-T832 AluminumTop tower section 3 m tube OD(outside diameter) 2.5 cm (1 in) 2.5 cm (1 in)Top tower section 3 m width (centerof tubing to center of tubing) 33.3 cm (13.1 in) 25.7 cm (10.1 in)Center tower section 3 m tube OD n/a 2.5 cm (1 in)Center tower section 3 m width(center of tubing to center of tubing) n/a 33.3 cm (13.1 in)Bottom tower section 3 m tube OD 3.175 cm (1.25 in) 2.175 cm (1.25 in)Bottom tower section 3 m width(center of tubing to center of tubing) 43.2 cm (17 in) 43.2 cm (17 in)Vertical pipe OD 2.5 cm (1 in)Cross support pipe OD 0.953 cm (0.375 in)Guyed tower area requirements ~3.5 m (11.5 ft) radius ~5 m (17 ft) radiusRequired concrete pad dimensionsfor UTBASE concrete mounting base(note 1)91 L x 91 W x 122 D cm(36 x 36 x 48 in)Maximum wind loadrecommendations(note 2)177 km/h (110 mph) for gusts (UTBASE base, unguyed)177 km/h (110 mph) for gusts (RBM18 base with/UTGUY)Notes:1. The concrete pad requirements assume heavy soil. Light, shifting, or sandy soils require abigger concrete pad.UT20 and UT30 Universal Towers 8