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I am looking for the formula to figure strength to weight ratio for a dome that I built for a project

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Q: What is the formula for strength to weight ratio in a dome?
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How strong are eggshells?

Eggshells are strong because of the dome shape they are. The dome helps to distribute the weight evenly without the shell crushing.


What is the name for the square cutouts used to lessen the weight of the dome?

A coffer


What architectural development were employed in the roman pantheon?

The architectural developments used in the pantheon were the use of the dome, (a perfect sphere) lighter concrete mixtures in the dome, and the use of coffers, or sunken panels in the dome to reduce the weight.


How does the dome shape of an egg can support the whole weight of the items on top of it?

I don"t know


Formula for surface area of a spherical dome?

The surface area of a sphere is 4(3.14)R2where R is the radius of the sphere so the surface area of your dome is half of that. 2(314)R2


How was the dome built in rome?

The Romans built domes in concrete. The greatest example is the dome of the pantheon, a temple which has been converted into a church. It is still the larges unreinforced concrete dome in the world. The dome was built on top of a rotunda (round chamber) in concrete and was supported by a sophisticated system of relieving arches. Its downward thrust rests on eight vaults in the drum wall (which is 6.4 metres 21 ft. thick) which are supported by eight piers. The structure had a symmetrical order. The height from the floor to the oculus is the same as the diameter of the inner circle of the rotunda, 43.3 metres (142 ft.). The height of both the wall of the rotunda and the dome are the same of the radius of the rotunda (half its dimension). Thus, the structure could contain a sphere 43.3 metre in diameter and could fit into a cube with 43.33x43.33 m sides. Despite its large size (43.43x2.67m) the dome weight is only 5 metric tons. This was achieved with a number of weight-saving strategies. Its thickness of 6.4 metres (21 ft.) at the base narrows to 1.2 metres (3.9 ft.) around the oculus. Successively less dense (and thus lighter) aggregates were used as the dome went upwards. To make concrete, the Romans mixed a volcanic rock called pozzolana with lime and added rubble aggregate to make it solid. Tuff and/or travertine stone was used for the lower layers, bricks for the middle ones and pumice and/or pottery shreds for the higher ones. If the same concrete had been used throughout, the downwards stress would have been 80% higher. Having the empty space of the oculus instead of an apex also reduced weight. This could be achieved only with Roman concrete. Modern concrete is fluid. Roman concrete was less fluid and had to be layered by hand. This allowed the use of different aggregates. The interior of the dome has five rings of 28 evenly spaced coffers (sunken panels). This is a decorative technique and this specific kind of layout is difficult to achieve. In the case of the dome, it also reduces weight because of the empty spaces in the squares. The arrangement of the coffers forms a honeycomb structure, which has a high strength-to-weight ratio. Thus, despite being hollow, it provides structural strength. The weight of the dome around the oculus (which is 9.1 metre, 30 ft., in diameter) is carried by as ring arches which form it.


How much did Brunelleschi's dome weigh?

It weight about 37 ton and used more than 4 million bricks.


What is a large rounded roof or a ceiling change one letter from dove?

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Why domes are of semicircular shapes instead of triangular or pyramid shaped?

Stress... With a dome, the stresses in the materials caused by the weight of the dome are evenly spread through the whole structure. With a pyramid, the stresses would be 'concentrated' at the corner joints.


What are some facts about Arizona?

* Camels were once used for transportation in Arizona. * The copper in the Capital dome is equal to the weight of 4,800,000 pennies.


What is the compression ratio for an engine?

It is the volume of the cylinder/combustion chamber/head gasket/piston volume(dish/dome) when the piston is at the bottom of the stroke divided by the volume when it is at the top of the stroke.


What are the names of the domed stadiums that have had the super bowl?

Ga dome, Super dome, astro dome, Seattle dome.