Refurbishment and Sustainable developpement Construction The refurbisment of the tower allowed to save a lot of materials,as 80%of the former reinforced concrete structure kept.It gave a second life to the strucutre.50%of the waste during the renovation were recycled! For the renovation,the asbestos from the previous structure had to be completly removed and the tower confined. Power consumption The Tower FIrst will spr and the ple,it will be the norn rain falls o some lights will be turned on where a drops fall.These lights are LEDs and only consume 8.75kW. In order to minimize the consumption,the three facades play a great role.They are cov red differently,acc to their exposure.That's why the south wing is more protected against sun, whereas the north wing is fully covered by glass. Calculation of the shadows spread the wings one another and the buildings in the neighbourhood, helped to the forecast of consumption. In addition,the facades have a double skin. The double skin is a second layer of glass all over the building,which permit air circulation between the two layers to naturally cool the building down. The heat suffered by the big surfaces are decreased thanks to 6800 automatic awnings. Thanks to all these measures,the Tour First is the most eco-friendly skys crape in France.That is why it followes the normes'High Environnemental Quality'with only 100kW/m2/year. Tour First Ghislain FARRADECHE 1159210 2/3 Tour!First Ghislain!FARRADECHE!1159210 2/3 Refurbishment!and!Sustainable!developpement Construction The! refurbisment! of! the! tower! allowed! to! save! a! lot! of! materials,! as! 80%! of! the! former! reinforced!concrete!structure!kept.! It!gave!a!second! life! to! the! strucutre.! 50%! of! the! waste! during! the! renovation!were!recycled! For! the! renovation,! the! asbestos! from! the! previous!structure!had!to!be!completly!removed!and! the!tower!confined.! Power!consumption The!Tower!FIrst!will!spread!the!weather!forecast.!It's!color!changes!with!the!time! and! the!weather.! For! example,!it!will! be! orange!in! the!morning.!When! rain! falls! on!it,! some! lights! will! be! turned! on! where! a! drops! fall.! These! lights! are! LEDs! and! only! consume!8,75kW. In!order! to!minimize! the!consumption,! the! three! facades! play!a!great! role.! They!are! covered! differently,! according! to! their! exposure.! That's! why!the!south!wing!is!more!protected!against!sun,! whereas! the! north!wing!is! fully! covered! by!glass.! Calculation! of! the! shadows! spread! the!wings! one! another! and! the! buildings! in! the! neighbourhood,! helped!to!the!forecast!of!consumption.! In!addition,!the!facades!have!a!double!skin.! The!double!skin!is!a!second!layer!of!glass!all!over! the!building,!which!permit!air!circulation!between! the!two!layers!to!naturally!cool!the!building!down. The! heat! suffered! by! the! big! surfaces! are! decreased! thanks! to! 6800! automatic! awnings. Thanks!to!all!these!measures,!the!Tour!First!is!the!most!eco\friendly!skyscraper! in!France.!That!is!why!it!followes!the!normes!'High!Environnemental!Quality'!with!only! 100kW/m2/year