### This is also a reverse geodesic dome calculator

It will calculate any size of dome and display the lengths for each strut, total amount of material required, the weight of your geodesic dome and even the amount of material to cover your geodesic dome. Enter any value in any yellow box and it will calculate all other corresponding values. For example you can specify a 2-foot length for strut “B” and all other struts and related values will be calculated.

Spherical diameter
Area
Perimeter
Perimeter: total length of all base struts
feet/meters of pipe/lumber
STRUTS ANGLE
30 X “A” 4.66°
30 X “B” 5.22°
60 X “C” 5.38°
90 X “D” 5.47°
30 X “E” 5.68°
60 X “F” 5.82°
130 X “G” 5.91°
65 X “H” 6.18°
60 X “I” 6.22°

## Connecting struts

 There are many types of connectors available for steel and timber geodesic dome. For more information, click here. 160 X 6-way connectors 6 X 5-way connectors 30 X 4-way connectors OR 195 bolts 195 nuts 390 washers

# Struts are vertex to vertex

That means end to end. But to connect them together with bolts, you need to make them longer to drill holes in them.

## Geodesic Dome floor

 Your calculated dome floor surface area is SQUARE FEET
 Concrete Cubic feet Cubic yards 4″ slab 6″ slab 8″ slab Plywood 4′ X 8′ sheets

## Seating Capacity

The following are guidelines based on international standards. Consult your local fire code for exact capacity.

 Estimated standing capacity Estimated dining capacity Estimated conference capacity

## How much will your geodesic dome weigh?

Your calculated geodesic dome diameter is feet
 1/2″ 3/4″ 1″ 1 1/4″ 1 1/2″ 2″ EMT Wall 0.042″ 0.049″ 0.057″ 0.065″ 0.065″ 0.065″ Lbs. kgs. STEEL SCHEDULE 40 Wall 0.109″ 0.113″ 0.133″ 0.140″ 0.140″ 0.154″ Lbs. kgs. ALUMINUM SCHEDULE 40 Wall 0.109″ 0.113″ 0.133″ 0.140″ 0.140″ 0.154″ Lbs. kgs.

## How much will your geodesic dome cost?

The tables below show sample costs. Material prices listed below vary with suppliers and market conditions.

calculated geodesic dome requires feet of pipe / lumber
 Galvanized pipe – Steel Schedule 40 Your estimated pipe dollar cost is: 1/2″ @ \$13 /10′ length 3/4 @ \$17/10′ length 1″ @ \$25 /10′ length 1 1/4″ @ \$34 /10′ length 1 1/2″ @ \$42 /10′ length 2″ @ \$55 /10′ length
 Structure pipe – Aluminum Schedule 40 Your estimated pipe dollar cost is: 1/2″ @ \$ /10′ length 3/4 @ \$ /10′ length 1″ @ \$ /10′ length 1 1/4″ @ \$ /10′ length 1 1/2″ @ \$ /10′ length 2″ @ \$ /10′ length
 Structure pipe – EMT Your estimated pipe dollar cost is: 1/2″ @ \$5.50 /10′ length 3/4 @ \$ 8.80 /10′ length 1″ @ \$18 /10′ length 1 1/4″ @ \$19 /10′ length 1 1/2″ @ \$22 /10′ length 2″ @ \$3 2/10′ length
 Cover: approx. s.f. \$ COST Canvas 20 oz. (\$1/s.f.) Canvas 42 oz (\$1.50/s.f.) Poly 3 mil (\$0.05/s.f.) Poly 6 mil (\$0.06/s.f.) Marine Shrink Wrap 7 mil. (\$0.08/s.f.) Industrial fire-retardant Shrink Wrap 12 mil (\$0.23/s.f.) Aluminet 70% shade cloth (\$0.35/s.f.) Tyvek (housewrap) (\$0.41/s.f.)
 Wood struts Your estimated wood dollar cost is: 2″X4″ @ \$0.35 foot (avg.) 2″X6″ @ \$0.50 foot (avg.) 2″X8″ @ \$0.70 foot (avg.) Plywood 1/2″ (\$25/ 4′ X 8′) OSB 1/2″ (\$9/ 4′ X 8′)

Smaller geodesic domes do not require massive anchoring; many will use long ground screws or rebar bent in the shape of a “U”. But for a more solid, safe and permanent solution, concrete is poured to create piers. Many also use them as a base and frame for a riser wall.

as a rule for large permanent structures piers should go past the frost line and down to the bedrock.

Rebar should be included to strengthen any pier.

 10″ Circular Pier Length Cu. feet Cu. yard 60lb. bags 80lb. bags 4′ 2.18 0.08 4.4 3.3 6′ 3.27 .12 6.5 4.9 8′ 4.36 .16 8.7 6.5
 12″ Circular Pier Length Cu. feet Cu. yard 60lb. bags 80lb. bags 4′ 3.14 0.12 6.3 4.7 6′ 4.71 0.17 9.4 7.0 8′ 6.28 0.23 12.6 9.4
 16″ Circular Pier Length Cu. feet Cu. yard 60lb. bags 80lb. bags 4′ 5.59 0.21 11.2 8.4 6′ 8.38 0.31 16.8 12.6 8′ 11.17 0.41 22.3 16.8
 20″ Circular Pier Length Cu. feet Cu. yard 60lb. bags 80lb. bags 4′ 4.36 0.16 8.8 6.6 6′ 6.54 0.24 13 9.8 8′ 8.72 0.32 17.4 13

## Assembly Diagram

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