Search results
Results from the WOW.Com Content Network
The U.S. Department of Energy in 1991 estimated the installed retrofit cost per ton of SO 2 pollution control equipment (scrubbers) on existing units would be in the $665– $736/ton range. [30] However, 2005 was the first year the price of an SO 2 allowance reached this level.
Radon is measured in picocuries per liter of air (pCi/L) or becquerel per cubic meter (Bq m-3). Both are measurements of radioactivity. The World Health Organization (WHO) sets the ideal indoor radon levels at 100 Bq/m-3. [97] In the United States, it is recommend to fix homes with radon levels at or above 4 pCi/L.
V08 Physical Activity Spaces and Equipment, providing indoor fitness space at no cost receives 2 points either the space includes two types of exercises or equipment that allow use by at least 5% of occupants at any time or has minimum size of 25 sq. m plus 0.1 sq. m per occupant until 930 sq. m, but WELL also allows if the project gives free ...
The construction industry is the number one user of phosphogypsum in 2020, with 10.5 Mt used as concrete set retarder and 3.5 Mt used in drywall. [13] It is also used as a chemical feedstock for producing sulfates , and as a soil conditioner similar to regular gypsum. [ 14 ]
Businesses recycling materials must compete with often the low cost of landfills and new construction commodities. [4] Data provided by 24 states reported that solid waste from construction and demolition (C&D) accounts for 23% of total waste in the U.S. [5] This is almost a quarter of the total solid waste produced by the United States. During ...
Radon is thus assumed to be the second leading cause of lung cancer after smoking, and accounts for 15,000 to 22,000 cancer deaths per year in the US alone. [9] [better source needed] However, the discussion about the opposite experimental results is still going on. [10] About 100,000 Bq/m 3 of radon was found in Stanley Watras's basement in 1984.
Construction site safety is an aspect of construction-related activities concerned with protecting construction site workers and others from death, injury, disease or other health-related risks. Construction is an often hazardous, predominantly land-based activity where site workers may be exposed to various risks, some of which remain ...
[5] [39] Costs for global implementation have been estimated at $1.25 to $2.5 trillion or about 3% of global GDP, with expected economies of scale. [38] Low-cost scalable materials have been developed for widescale implementation, although some challenges toward commercialization remain.