Search results
Results from the WOW.Com Content Network
A pinhole occluder is an opaque disk with one or more small holes through it, used by ophthalmologists, orthoptists and optometrists to test visual acuity. The occluder is a simple way to focus light, as in a pinhole camera, temporarily removing the effects of refractive errors such as myopia. Because light passes only through the center of the ...
When the masterwork is finished, a cast is made using synthetic liquid rubber, and from this cast, form liners are produced in the reverse image of the original. A form liner panel is placed on the inside of a concrete forming system before the concrete has been poured and acts as a mold for the concrete to be formed against. Once the concrete ...
The company's founder William Burke Belknap the elder (1811–1884) was born in Brimfield, Massachusetts, the son of Morris Burke Belknap the elder (1780–1877) and Phoebe Locke Thompson Belknap (1788–1873) and is not to be confused with William Burke Belknap the younger (1885–1965) or William Burke Belknap Jr.
The first residential building of slipform construction; erected in 1950 in Västertorp, Sweden, by AB Bygging Later picture of the residential building in Västertorp. Slip forming, continuous poured, continuously formed, or slipform construction is a construction method in which concrete is placed into a form that may be in continuous motion horizontally, or incrementally raised vertically.
Like other concrete formwork, the forms are filled with concrete in 1-foot to 4-foot high "lifts" to manage the concrete pressure and reduce the risk of blowouts. After the concrete has cured, the forms are left in place permanently to provide a variety of benefits, depending on materials used: Thermal insulation; Soundproofing
EFCO offers formwork and shoring solutions for all types of concrete construction projects. [1] EFCO, formerly known as Economy Forms Corporation, is headquartered in Des Moines, Iowa, and currently has operations in 12 countries and manufacturing facilities in both Des Moines, Iowa, and Georgetown, Ontario, Canada. [2]
A precast concrete walled house under construction An example of low-quality precast concrete with exposed dowels, connectors, indications of cracks, and malformations, even during its installation, Barangay Lantic, Carmona, Cavite, Philippines Interior view of the walls, supports, and roof of a precast commercial shop in Williston, North Dakota, US.
When an anchors load resistance must consider load reduction factors, this would imply that the particular selected anchor will form a different failure crack zone. For example, the anchors depicted in figure 5, a footed anchor has the tendency to overload the concrete cover in thin wall panels, hence is more susceptible to side blow-out ...