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The average payback time for residential solar PV in the UK was 11.4 years as of 2015, [30] but subsequent increases in the price of domestic energy have significantly decreased this. The April 2022 rise in the price cap saw payback times reduced on average by 2.5 years. [32]
The maps included the area of most civil parishes and their detached parts, as well as extra-parochial areas and townships. Originally the area of these places was given in acres, roods and perches. [4] After about 1879 this was changed to solely acres, with area given to three decimal places. As boundary changes occurred throughout the late ...
This is a list of the 296 districts of England ordered by area, according to Standard Area Measurements published by the Office for National Statistics. [1] The area is defined as 'area to mean high water excluding inland water'. [2]
5 July 2016: The 5 millionth image was submitted [12] 9 June 2014: The 4 millionth image was submitted [13] August 2012: 80% coverage of Great Britain & Ireland; 29 June 2012: The 3 millionth image was submitted [14] 14 August 2010: The 2 millionth image was submitted [15] 15 October 2008: Millionth image [8] 8 April 2008: 750,000 images [16]
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 ...
Building codes in the U.S. specify ventilation rates as a minimum of 1 sq ft (0.093 m 2) of opening per 150 sq ft (14 m 2) (1:150) with a ratio of 1:300 in some conditions. [8] Warm air rises, so ceiling insulation is designed to have a higher r-value and the insulation is often installed between the ceiling joists or rafters.
A flat roof includes pitches as low as 1 ⁄ 2:12 to 2:12 (1 in 24 to 1 in 6), which are barely capable of properly shedding water. Such low-slope roofs (up to 4:12 (1 in 3)) require special materials and techniques to avoid leaks. [4] Conventional describes pitches from 4:12 (1 in 3) to 9:12 (3 in 4). [4]
[2] In 2015 a planning application to reopen a slate mine in Collyweston was approved; the slate mines had not been used since the 1960s. [3] Slate from the mine has been used to repair Bodley's Court in King's College, Cambridge, [4] Clare College, Cambridge and Old Westbury Gardens in Long Island in New York. [5]