Construction World December 2019

THE LEONARDO BUILDING , 75 ON MAUDE STREET, SANDTON The Leonardo building is to be the tallest building in Africa, 233 m from street level . Initially the consulting engineer had no idea how many levels the building was going to have until about mid-way. which air conditioning system to use. , Q WKH HQG LW ZDV PROJECT INFORMATION

decided to go with a Samsung Variable Refrigerant System 95) 7KLV V\VWHP LV designed in such a way DV WR XVH WKH EXLOGLQJ̵V orientation and heat load to its maximum DGYDQWDJH 7KH KHDW recovery system provides the heat which is rejected from the air conditioning V\VWHP WR WKH EXLOGLQJ̵V KRW ZDWHU V\VWHP making it extremely

• Company entering: Wingrove Consulting Engineers • Client: Legacy Development Management • 6WDUW GDWH 1RYHPEHU • End date: End of 2019 • Main contractor: $YHQJ *ULQDNHU /7$ • Architect: &R $UF ,QWHUQDWLRQDO $UFKLWHFWV ,QF • Project manager: Legacy Development • Consulting engineer: Wingrove Consulting • HVAC: ,PSURYDLU

HQHUJ\ HͦFLHQW 7KH HQWLUH V\VWHP LV PRQLWRUHG H[WHUQDOO\ WKURXJK D EXLOGLQJ management system which helps with the maintenance and quick response WR DQ\ EUHDNGRZQV ,Q DGGLWLRQ WR WKH V\VWHP̵V YDULRXV VPDUW WHFKQRORJLHV DLPHG DW UHGXFLQJ HQYLURQPHQWDO LPSDFW WKH SURMHFW KDV KHOSHG WR FUHDWH MREV IRU WKH PDQ\ LQGLYLGXDOV ZKR KHOSHG WR SODQ LQVWDOO DQG FRPPLVVLRQ WKH V\VWHP ZLWK WKH job creation component being highly sustainable since routine maintenance LQ WKH IXWXUH ZLOO FRQWLQXH WR SURYLGH HPSOR\PHQW RSSRUWXQLWLHV ,Q RUGHU WR VXFFHVVIXOO\ EH DEOH WR XVH D 95) V\VWHP RQ D EXLOGLQJ OLNH 7KH /HRQDUGR SODQW DUHDV QHHGHG WR EH FUHDWHG IRU WKH RXWGRRU XQLWV ,W ZDV decided to have double volume plantrooms located on approximately 50% of WKH ͥRRU DUHD DW YDULRXV LQWHUYDOV XS WKH EXLOGLQJ 7KLV HQDEOHG WKH EXLOGLQJ WR LQFUHDVH LQ KHLJKW ZLWKRXW KDYLQJ WR FKDQJH WKH $& SODQW 7KH EXLOGLQJ̵V ͤQDO KHLJKW EHFDPH ͥH[LEOH DQG WKH FOLHQW FRXOG GHFLGH ZKDW KH ZDQWHG ZLWKRXW KDYLQJ WR LQFXU PDMRU FRVWV 0RUHRYHU WKDQNV WR WKH V\VWHP̵V FOHYHU DQG FRPSDFW GHVLJQ LQVWDOODWLRQ ZDV JUHDWO\ VLPSOLͤHG DQG XOWLPDWHO\ KHOSHG WKH FOLHQW WR VDYH RQ FRPPLVVLRQLQJ FRVWV With a growing global consciousness around protecting the environment and reducing the carbon footprint careful consideration was given to selecting a system that would perform optimally while minimising its impact RQ WKH HQYLURQPHQW WKDQNV WR VXSHULRU HQHUJ\ HͦFLHQF\ (DFK SODQWURRP KDV LWV RZQ GHGLFDWHG IUHVK DLU V\VWHP ZKLFK ͤOWHUV WKH UHTXLUHG DPRXQW of outside air into each part of the building thus making the occupants as FRPIRUWDEOH DV SRVVLEOH 7KH SODQWURRPV DUH DOVR VHSDUDWHG IURP WKH UHVW RI WKH EXLOGLQJ LQ D SURWHFWHG HQYLURQPHQW ZKLFK ZRQ̵W DIIHFW WKH UHVW RI WKH EXLOGLQJ 7KH 95) 6\VWHP KDV EHHQ GHVLJQHG ZLWK VDIHW\ LQ PLQG HVSHFLDOO\ ZKHQ LW FRPHV WR ZLULQJ ZLWK WKH RXWGRRU XQLW SURWHFWLQJ LWVHOI VKRXOG WKH FRPPXQLFDWLRQ FDEOH DFFLGHQWDOO\ EH FRQQHFWHG WR D SRZHU WHUPLQDO 7KH VHOHFWHG +9$& VXEFRQWUDFWRU KDG D GHGLFDWHG SHUVRQ RQ VLWH GDLO\ WR HQVXUH TXDOLW\ ZRUN LV FDUULHG RXW DQG D YHU\ KLJK VWDQGDUG LV PDLQWDLQHG DW DOO WLPHV 7KH VLWH ZDV UXQ OLNH D ZHOO RLOHG PDFKLQH HDFK ZRUNHU KDG D VSHFLͤF MRE and had to work day and night to ensure that everything was installed and ZRUNLQJ RQ WLPH %XW LQ WKH HQG DOO WKH KDUG ZRUN SDLG RII 1HHGOHVV WR VD\ there had to be strict cost control and every little thing had to be accounted IRU WR PDNH VXUH QRWKLQJ ZDV ORVW RU GLVFDUGHG DORQJ WKH ZD\ ƒ

B E S T P R O J E C T S 2019

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