Construction World December 2020

16 ON BREE The 16 On Bree project is an ambitious effort to repurpose and expand a modest more than century old building into the tallest residential block in Cape Town’s bustling city area. Replacing a building of just two storeys high, the new mixed-use block will reach 38 floors and will accommodate 380 apartments. K ey among design and construction achievements was to preserve

support the wall and prevent any structural failure while it was cut IUHH IURP WKH UHVW RI WKH EXLOGLQJ EHLQJ GHPROLVKHG $ FRQFUHWH JURXQG EHDP ZDV DOVR FDVW DORQJ WKH EDVH RI WKH ID©DGH WR DFW DV D FRXQWHUZHLJKW DQG SUHYHQW DQ\ PRYHPHQW 2QFH WKLV ZDV LQ SODFH GHPROLWLRQ FRXOG SURFHHG 7KH IUDPHZRUN had to remain in place during construction, to keep the freestanding ID©DGH LQ SRVLWLRQ $V WKH QHZ VWUXFWXUH ZDV EXLOW LW ZDV VWLWFKHG LQ ZLWK WKH EUDFHG ID©DGH XQWLO ͤQDOO\ WKH EUDFH FRXOG EH UHPRYHG 7KHUH were also three other heritage walls within the building – standing in a 8 VKDSH ̰ ZKLFK ZHUH SUHVHUYHG GXULQJ WKH FRQVWUXFWLRQ SURFHVV ,Q DQRWKHU KHULWDJH LQWHUYHQWLRQ HDFK ͥRRUERDUG RI WKH RULJLQDO 2UHJRQ WLPEHU ͥRRULQJ ZDV UHPRYHG DQG VDIHO\ VWRUHG WR PDNH ZD\ IRU QHZ SLOHV DQG FRQFUHWH EDVHV 7KHVH MRLVW WRQJXH DQG JURRYH ERDUGV DUH EHLQJ UHͤWWHG RQ WKH ͤUVW ͥRRU RI WKH QHZ EXLOGLQJ ZKLFK LV WR EH UHWDLO VSDFH $OVR VPDOOHU VWRQH ZDOOV RI KHULWDJH YDOXH ZHUH VWULSSHG VWRQH E\ VWRQH WR EH UHEXLOW LQWR WKH QHZ VWUXFWXUH Designed by FWJK architect Tiaan Greyling, the atrium design with the associated plenum scoops allows fresh air to circulate throughout the interior of the building, thereby reducing the mechanical ventilation UHTXLUHPHQW 7KLV DOVR HQDEOHG WKH SODFHPHQW RI EHGURRPV DORQJ WKH external passages surrounding the atria in terms of the apartment ͥRRU SODQ GHVLJQ To optimise the spectacular views and allow natural light into the apartments, the design employed a combination of reinforced FRQFUHWH DQG IXOO\ JOD]HG VKRS IURQWV ZLWK VOLGLQJ GRRUV 7KLV DOVR reduced the need for external brickwork and plaster, and in turn the H[WHUQDO VFDIIROG DV WKH VKRS IURQW ZDV ͤWWHG IURP WKH LQVLGH RXW Better use was made of the wasted space below the core escape VWDLUV RQ OHYHOV DQG E\ SODFLQJ EXON ZDWHU VWRUDJH WDQNV WKHUH 7R DOORZ ͥH[LELOLW\ IRU WKH SRVVLEOH IXWXUH FRQYHUVLRQ RI SDUNLQJ OHYHOV LQWR OLYLQJ OHYHOV WKH SDUNLQJ ͥRRU WR FHLOLQJ KHLJKWV ZHUH

D IUDJLOH ID©DGH RI JUHDW KHULWDJH YDOXH DQG WR LPSOHPHQW WKH SURMHFW LQ WKH KLJKO\ VSDFH FRQVWUDLQHG FLW\ FHQWUH ZLWK DOPRVW QR OD\ GRZQ DUHD ZKLOH DOORZLQJ FRQWLQXHG XQLQWHUUXSWHG ͥRZ RI YHKLFXODU DQG SHGHVWULDQ WUDͦF 7KH RQVHW RI WKH &29,' SDQGHPLF LQ 0DUFK DGGHG IXUWKHU health and safety challenges, especially given the building’s height DQG FRPSDFW GLPHQVLRQV $SSO\LQJ WKH QHFHVVDU\ VRFLDO GLVWDQFLQJ SURWRFROV KDG WR FRQIURQW LVVXHV RI FRQͤQHG LQWHUQDO VSDFH DV ZHOO DV YHUWLFDO PRYHPHQW RI EXLOGLQJ WHDPV WR WKHLU ͥRRUV RI RSHUDWLRQ 7KHVH IDFWRUV ZHUH H[DFHUEDWHG E\ WKH UHVLGHQWLDO QDWXUH RI WKH EXLOGLQJ With each apartment demanding the attention of multiple trades, there ZHUH DERXW SHRSOH RQ VLWH DW DQ\ RQH WLPH EHIRUH WKH RXWEUHDN RI WKH SDQGHPLF 2Q FRPSOHWLRQ WKH FRQVWUXFWLRQ ZLOO KDYH FRQVXPHG P of FRQFUHWH ̰ PDLQO\ SXPSHG WR WKH UHTXLUHG OHYHOV ̰ DV ZHOO DV WRQQHV RI UHLQIRUFLQJ EDU DQG EULFNV 7KH QHZ KHLJKW RI WKH EXLOGLQJ KDV UHTXLUHG WKH SODFHPHQW RI FRQFUHWH IRXQGDWLRQ SLOHV %HJLQQLQJ LQ 0D\ DIWHU D SHULRG RI GHPROLWLRQ FRQVWUXFWLRQ ZRUN RQ 2Q %UHH ZDV LQLWLDOO\ SODQQHG DV D WZR \HDU SURMHFW 7KH LPSDFW RI &29,' H[WHQGHG WKH SODQQHG FRPSOHWLRQ GDWH VRPHZKDW Located in the heart of the Cape Town central business district, D NH\ DVSHFW RI WKH 2Q %UHH SURMHFW ZDV WKH KHULWDJH YDOXH RI WKH EXLOGLQJ LW UHSODFHG &RPSO\LQJ ZLWK VWULFW KHULWDJH UHJXODWLRQV WKH FRQVWUXFWLRQ PHWKRG UHWDLQHG D ODUJH PHWUH KLJK ID©DGH EXLOW RYHU \HDUV DJR 7KLV ZDOO ̰ EXLOW QRW RI FRQFUHWH EXW RI URFN FOD\ DQG OLPH ̰ QHHGHG JHQWOH WUHDWPHQW DQG ͤUP VXSSRUW Concor erected a specially designed structural steel brace to

designed to the same dimensions DV WKH DSDUWPHQW OHYHOV :KLOH WKH parking area height is normally RQO\ PHWUHV WKH KHLJKW IRU D VWDQGDUG DSDUWPHQW LV PHWUHV LQFOXGLQJ VHUYLFHV UDWH KLJK RQ WKH DJHQGD (ͦFLHQW UROOLQJ RXW of apartments is a process that needs to be closely monitored and supervised if the highest standards of quality are to be DFKLHYHG &RQFRU DSSOLHG LWV experienced supervisors in

PROJECT INFORMATION

• Company entering: Concor • Client: &DSH 7RZQ • Start date: 0DUFK • End date: 1RYHPEHU • Main Contractor: Concor • Architect: FWJK Architecture

VXͦFLHQW foremen • Principal Agent: 2ULRQ 3URMHFW 0DQDJHPHQW • Project Manager: ):-. 3URMHFW 0DQDJHPHQW • Quantity Surveyor: FWJK Quantity Surveyors • Consulting Engineer: Zutari

numbers, with at least four

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2020