US spysatellite

Our team of estimators will produce a design that will satisfy the load and span conditions in the most economical way possible. This may mean using various patterns and beam types within a project to ensure the most cost effective solution without compromising on quality.

Our beam and block flooring is very strong and stable. Each T-beam is reinforced and specifically designed to meet the requirements of the span in question.

Cache is located on Arizona State Trust Land so you will need a ASTL recreational permit. These are available online at: https://land.az.gov/natural-resources/recreational-permits and can be printed at home.

We have been manufacturing suspended concrete floor beams since 1997. We are known for our quality products, proactive service and value-focused pricing.

Each of the targets has a manhole or hatch on the west arm of the cross, The manhole has a cement cover and steel reinforcement bars ("rebar"). According to a member of the Cold War Museum in Warrenton, Virginia, the 6 pieces of rebar, which protrude at an equal distance from each other, may have been used to hold laser lighting to give a more accurate fix on each target.

The Corona Satellite Calibration Targets are two hundred and seventy two concrete markers in and around Casa Grande, Arizona  that helped to calibrate satellites of the Corona spy satellite program.

Following the launch of Corona satellites in the 1960s, the National Reconnaissance Program determined that there was a need for calibration under the Controlled Range Network. Working with the Arizona Real Estate Office, the Army Map Service was directed to lease land for office space in Casa Grande, Arizona. Land was leased in one hundred by one hundred foot parcels, with access to a road. Large concrete Maltese crosses in the ground, sixty feet in width, and were in place by 1967. The crosses were arranged in a sixteen by sixteen grid, each roughly a mile apart from the next one.

Our beam and block flooring is very strong robust. Each T-beam is reinforced and specifically designed to meet the requirements of the span in question.

Floorspan Contracts are a precast concrete manufacturer based in Wisbech, Cambridgeshire. Decades ago, we began our life as block and beam floor suppliers, and we have grown into one of the largest suspended concrete flooring specialists in the region.

Satellite calibrationsites

The map shows our general area of operation. We may be able able to be competitive in other areas, particularly on larger projects.

While caching I had seen a few of these targets but had no idea of their use.  Mystery now solved for me.  Thank you team RStarrT for enlighting me.

Our beam and block floors are made by laying a series of T-beams parallel to each other on supporting blockwork walls. At Floorspan, we produce 3 types of beam. The ‘pattern’ and type of beam used for a floor depends on two main factors, namely:

Satellite calibration targetsarizona

Beam and block flooring has become an increasingly popular choice when it comes to floor structures. This is particularly true of residential properties. Suspended concrete floors do not creak, shrink, or bounce. They are relatively easy to install and provide a safe working platform for the rest of the build.

The majority of the targets were abandoned when the program ended in 1972. According to Army Map Service, the government considered the targets to be obsolete because the land on which they were situated had subsided because of groundwater extraction.  Land lessees were then given the option of having the targets removed and dumped near Eloy, Arizona. The remaining 84 targets (counted July 2016) have been left in place, unless they have been removed because the location has been redeveloped.

Spysatellitefilm recovery

Coronasatellite calibration targets

Fire resistance is another important factor. Our beam and block floors have high fire safety ratings. The construction method also helps to ensure safety.

Suspended concrete floors are the preferred choice for sloping sites as they overcome the need to carry out major excavation.

Beam and block flooring offers a good degree of flexibility when it comes to thermal performance. To achieve the best U value possible, we can provide EPS flooring panels, in place of infill blocks, alongside our cost-effective ‘light’ beams.

Because of the damping qualities of concrete, our beam and block floors have strong noise reduction capabilities. This sound insulation ensures compliance with government building regulations that deal with the passage of sound (‘The Building Regulation – Part E’)

Medium density, lightweight infill blocks fill the gaps between the beams. A sand and cement mix is then spread over the floor to ensure that the beams and blocks form a solid structure. We can also provide any air bricks or slips you might require.