By clicking “Take All Cookies”, you comply with the storing of cookies on your system to improve site navigation, assess site usage, and support inside our advertising and marketing endeavours. This is certainly why fire normally spreads upward, and It is also why flames are often "pointed" at the top. https://carparkextractsystems01222.bloggadores.com/35711155/the-2-minute-rule-for-car-park-extract-systems