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Up to 1879 the 1:2500 maps were accompanied by Books of Reference or "area books" that gave acreages and land-use information for land-parcel numbers. After 1879, land-use information was dropped from these area books; after the mid-1880s, the books themselves were dropped and acreages were printed instead on the maps. [ 2 ]
The map browsing interface, showing thumbnail photos for each completed "geograph". Geograph Britain and Ireland is a web-based project, begun in March 2005, to create a freely accessible archive of geographically located photographs of Great Britain and Ireland. [1]
The area is defined as 'area to mean high water excluding inland water'. [ 2 ] The list consists of 164 non-metropolitan districts , 32 London boroughs , 36 metropolitan boroughs , 62 unitary authorities , and two sui generis authorities (the City of London and the Isles of Scilly ).
A properly designed and installed extensive green-roof system can cost $108–$248/m 2 ($10–$23/sq ft) while an intensive green roof costs $355–$2,368/m 2 ($33–$220/sq ft) However, since most of the materials used to build the green roof can be salvaged, it is estimated that the cost of replacing a green roof is generally one third of the ...
Flat roofs, or "low-slope" roofs, are also commonly found on commercial buildings throughout the world. The U.S.-based National Roofing Contractors Association defines a low-slope roof as having a slope of 3 in 12 (1:4) or less. [2] Flat roofs exist all over the world, and each area has its own tradition or preference for materials used.
the definition follows a ‘bricks and mortar’ approach, with areas defined as built-up land with a minimum area of 20 hectares (200,000 m 2), while settlements within 200 metres of each other are linked. Built-up area sub-divisions are also identified to provide greater detail in the data, especially in the larger conurbations. [1]
This report is known as the State of the English Cities Report [2] and was maintained by the Department for Communities and Local Government. Using this definition the term "city" is used as a primary urban area, which is distinct from the Office for National Statistics urban area agglomerations, with a total population in excess of 125,000. [3]
In the following years the cost of photovoltaic (PV) panels fell, [1] and the FIT rates for new installations were reduced in stages until the scheme closed to new applications in 2019. [2] As of 2023, over 14.4 gigawatt (GW) had been installed, a third of which was rooftop solar. [3]