| Dome Model | 500 | 625 | 650 | 650 | 950 | 950 | 1250 |
| Dome Diameter | 26′ MID | 29′ MID | 30′ LOW | 30′ HIGH | 36′ LOW | 36′ HIGH | 40′ LOW |
| Dome Frequency | 2 | 2 | 3 | 3 | 3 | 3 | 3 |
| Base Diameter | 25′-10 3/4″ | 29′-1 1/2″ | 29′-5 1/2″ | 29′-5 1/2″ | 35′-7 5/8″ | 35′-7 5/8″ | 40′-1″ |
| 7.89 m | 8.88 m | 8.98 m | 8.98 m | 10.86 m | 10.86 m | 12.22 m | |
| Main Floor Space w/o loft | 518 sf (F.T.) | 625 sf | 662 sf | 662 sf | 968 sf | 968 sf | 1,225 sf |
| 48 sm | 58 sm | 62 sm | 62 sm | 90 sm | 90 sm | 114 sm | |
| Roof Area w/o riser | 732 sf (F.T.) | 1106 sf | 1107 sf | 1625 sf | 1619 sf | 2376 sf | 2064 sf |
| 91 sm | 103 sm | 103 sm | 151 sm | 150 sm | 221 sm | 192 sm | |
| Total Volume w/riser | 6,646 Cu.Ft. | 9,129 Cu.Ft. | 7,331 Cu.Ft. | 10,320 Cu.Ft. | 12,180 Cu.Ft. | 17,601 Cu.Ft. | 16,752 Cu.Ft. |
| 188 Cu. m | 259 Cu. m | 208 Cu. m | 292 Cu. m | 344 Cu. m | 498 Cu. m | 474 Cu m. | |
| Height @ Center w/riser | 16′-11 1/2″ | 18′-6 3/4″ | 15′-11 1/4″ | 20′-3 3/4″ | 18′-2″ | 23′-7″ | 19′-11 1/2″ |
| 5.17 m | 5.66 m | 4.86 m | 6.19 m | 5.54 m | 7.19 m | 6.08 m | |
| 1st Row Triangle Height | 6′-5″ | 7′-2 1/2″ | 5′-0″ | 5′-7 1/2″ | 5′-10 1/2″ | 6′-9 3/4″ | 6′-7 1/4″ |
| 1.96 m | 2.20 m | 1.52 m | 1.171 m | 1.79 m | 2.08 m | 2.01 m | |
| Height of Riser Wall | 4′-0″ | 4′-0″ | 3′-9″ | 3′-0″ | 3′-9″ | 2′-4 1/2″ | 3′-9″ |
| 1.22 m | 1.22 m | 1.14 m | .91 m | 1.14 m | .72 m | 1.14 m | |
| Extension opening height | 10′-5″ (S.T.) | 11′-2 1/2″ (S.T.) | 8′-9″ | 8′-1 1/2″ | 9′-7 1/2″ | 9′-2 1/4″ | 10′-4 1/4″ |
| 3.18 m | 3.42 m | 2.67 m | 2.48 m | 2.93 m | 2.80 m | 3.16 m | |
| Ultra-Lok wind load | 150+ mph | 150+ mph | 200+ mph | 200+ mph | 200+ mph | 200+ mph | 200+ mph |
| Wind Load | 240+ km/h | 240 km/h | 320+ km/h | 320+ km/h | 320+ km/h | 320+ km/h | 320+ km/h |
| Snow Load | 100+ psf | 100+ psf | 150+ psf | 150+ psf | 150+ psf | 150+ psf | 150+ psf |
| Snow Load | 488 kg/sm | 488 kg/sm | 732 kg/sm | 732 kg/sm | 732 kg/sm | 732 kg/sm | 732 kg/sm |
| Earthquake category | Zone E | Zone E | Zone E | Zone E | Zone E | Zone E | Zone E |
| Dome Model | 1250 | 1500 | 1600 | 1700 | 1800 | 1900 | 2000 |
| Dome Diameter | 40′ HIGH | 45′ LOW | 46′ MID | 47′ LOW | 49′ MID | 50′ LOW | 51′ MID |
| Dome Frequency | 3 | 4 | 4 | 4 | 4 | 4 | 4 |
| Base Diameter | 40′-1″ | 44′-6 1/2″ | 46′-4″ | 46′-8 1/8″ | 48′-7″ | 49′-3″ | 51′-3″ |
| 12.22 m | 13.58 m | 14.12 m | 14.23 m | 14.81 m | 15.01 m | 15.62 m | |
| Main Floor Space w/o loft | 1,225 sf | 1,532 sf | 1,659 sf | 1,683 sf | 1,822 sf | 1,880 sf | 2,003 sf |
| 114 sm | 142 sm | 154 sm | 156 sm | 169 sm | 175 sm | 186 sm | |
| Roof Area w/o riser | 3029 sf | 2388 sf | 3308 sf | 2623 sf | 3634 sf | 2920 sf | 4046 sf |
| 281 sm | 222 sm | 307 sm | 244 sm | 338 sm | 271 sm | 376 sm | |
| Total Volume w/ riser | 24,687 Cu.Ft. | 18,248 Cu.Ft. | 25,363 Cu.Ft. | 20,865 Cu.Ft. | 29,240 Cu.Ft. | 24,331 Cu.Ft. | 34,408 Cu.Ft. |
| 700 Cu. m | 517 Cu. m | 718 Cu. m | 591 Cu. m | 828 Cu. m | 689 Cu. m | 974 Cu. m | |
| Height @ Center w/riser | 26′-2 1/2″ | 20′- 6 3/4″ | 25′-6 1/2″ | 21′-6 1/2″ | 26′-8″ | 21′-10″ | 28′-0″ |
| 7.99 m | 6.27 m | 7.79 m | 6.57 m | 8.13 m | 6.65 m | 8.53 m | |
| 1st Row triangle height | 7′-8″ | 6′-0″ | 6′-6″ | 6′-4″ | 6′-10″ | 6′-8″ | 7′-2″ |
| 2.34 m | 1.83 m | 1.98 m | 1.93 m | 2.08 m | 2.03 m | 2.18 m | |
| Height of Riser Wall | 2′-4 1/2″ | 3′-9″ | 2′-4 1/2″ | 3′-9″ | 2′-4 1/2″ | 3′-9″ | 2′-4 1/2″ |
| .72 m | 1.14 m | .72 m | 1.14 m | .72 m | 1.14 m | .72 m | |
| Extension opening height | 10′-0 1/2″ | 9′-9″ | 8′-10 1/2″ | 10′-1″ | 9′-2 1/2″ | 10′-5″ | 9′-6 1/2″ |
| 3.06 m | 2.97 m | 2.71 m | 3.07 m | 2.81 m | 3.18 m | 2.91 m | |
| Ultra-Lok Wind Load | 200+ mph | 200+ mph | 200+ mph | 200+ mph | 200+ mph | 200+ mph | 200+ mph |
| Wind Load | 320+ km/h | 320+ km/h | 320+ km/h | 320+ km/h | 320+ km/h | 320+ km/h | 320+ km/h |
| Snow Load | 150+ psf | 150+ psf | 150+ psf | 150+ psf | 150+ psf | 150+ psf | 150+ psf |
| Snow Load | 732 kg/sm | 732 kg/sm | 732 kg/sm | 732 kg/sm | 732 kg/sm | 732 kg/sm | 732 kg/sm |
| Earthquake category | Zone E | Zone E | Zone E | Zone E | Zone E | Zone E | Zone E |
Note: We calculate minimum code loads on our dome framework system without using the added structural strength contributed by our 3/4” plywood exterior panels. This allows us to install skylights in any or all of the exterior panels. Normally, our domes have 8 to 12 skylights, which is approx 10% of the roof area. The structural load calculations would be greatly enhanced if the 3/4” plywood exterior panels were factored into the engineering calculations. Using the exterior panels as part of the strength and our Ultra-Lok connectors, our domes can take snow loads in excess of 150#PSF or winds in excess of 200 MPH.
Notes: Additional engineering costs will be incurred if your local building department wants engineering certification of non-dome shell components, such as footings, foundations, floor systems, interior support walls and like items. Natural Spaces Domes Ultra-Lok connectors will meet building codes in areas with high winds (coastal), heavy snow (mountains), and earthquakes.