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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 ...
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.
The average size of residential solar PV systems was estimated to be 3.25 kW, and the technical potential for residential solar PV in the United Kingdom was estimated at 41,636 MW. [ 30 ] MCS (Microgeneration Certification Scheme) claim 61,320 UK properties had solar panels installed in 2021, an increase of 71% on the previous year. [ 31 ]
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]
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]
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 ...
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]
Project Sunroof was created by Google engineer Carl Elkin as a 20% time project. While initially launching only in the cities of Boston, San Francisco, and Fresno, [3] the project now displays solar potential for 43 million homes in the US. [4]