http://arcdog.com/architects/b....ushsoil44/activity/2
https://gadegaard-burks-2.fede....ratedjournals.com/5-
Gas Flame Patio Heater Gas patio heaters create a warm and inviting setting for outdoor social gatherings. Gas patio heaters are extremely popular in hotels, restaurants and bars because they provide an elegant design to outdoor spaces. They also release greenhouse gases and aerosols. However If you're not cutting down trees (which is not the case in the majority of the US), then they shouldn't pose a problem. Stylis