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The house is dome-shaped, with Quonset hut ribs forming the frame of the dome. Most of the dome is covered in shingles; however, the southeast side of the dome was left open to give the house outdoor rooms. Two smaller domes containing the home's bedrooms abut the south and northeast sides of the main dome. [2]
The first 75% of steel wire was pulled through a 0.211-in.-dia die to create a 130,000-psi stress. The last 25% of steel wire was pulled through a 0.214-in.-dia die to create a 120,000-psi stress. [8] The wrapping machine was propelled by a 200-hp motor, along an endless chain 1,260 feet (380 m) long around the circumference of the dome.
This is a list of dates associated with the prehistoric peopling of the world (first known presence of Homo sapiens). The list is divided into four categories, Middle Paleolithic (before 50,000 years ago), Upper Paleolithic (50,000 to 12,500 years ago), Holocene (12,500 to 500 years ago) and Modern ( Age of Sail and modern exploration).
The earliest evidence for dressed stone domes with voussoirs comes from the first century BC in the region of Palestine, Syria, and southern Anatolia, the "heartland of Oriental Hellenism". [38] A stone pendentive dome is known from a first century BC bath in Petra. [51] The Scythians built domed tombs, as did some Germanic tribes in a ...
In order to qualify for the list, a structure must: be a recognizable building (defined as any human-made structure used or intended for supporting or sheltering any use or continuous occupancy ); incorporate features of building work from the claimed date to at least 1.5 metres (4.9 ft) in height and/or be a listed building .
This is a list of archaeological sites on the National Register of Historic Places in Illinois. Historic sites in the United States qualify to be listed on the National Register of Historic Places by passing one or more of four different criteria; Criterion D permits the inclusion of proven and potential archaeological sites . [ 1 ]
This list of the prehistoric life of Illinois contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Illinois. Precambrian [ edit ]
Paleontology in Illinois refers to paleontological research occurring within or conducted by people from the U.S. state of Illinois. Scientists have found that Illinois was covered by a sea during the Paleozoic Era. Over time this sea was inhabited by animals including brachiopods, clams, corals, crinoids, sea snails, sponges, and trilobites.