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FUTURE IS NOWVALUE ENGINEERING
12th, April
Johannesburg, South Africa
ZAK 2018| Johannesburg I April 2018 2
FINDING THE BEST POSSIBLE
SOLUTION W/O COMPROMISING
ON QUALITY
ZAK 2018| Johannesburg I April 2018 3
REAL EXAMPLES: VALUE ENGINEERING IN FIXATIONS
ZAK 2018| Johannesburg I April 2018 4
VALUE ENGINEERING EXAMPLES – CAST-IN CHANNEL TO ADDRESS VERY LIMITED ACCESS
ZAK 2018| Johannesburg I April 2018 5
• Project description: One Za’abeel
– Location: Dubai, UAE
– Type: mixed use, 2 towers 50+ & 60+ floors
– Consultant: Inhabit
• Project challenges:
– Different panels 3.6m & 4.25m
– Horizontal/ longitude loads up to 10kN
– Very limited access to the location
• Proposed solution & benefits:
– Hilti HAC cast-in channels
– only 2 sizes of cast-in channels to be used =
peace of mind and quick installation; post-
installed anchors won’t answer project needs
VALUE ENGINEERING EXAMPLES – CAST-IN CHANNEL TO SOLVE DIFFERENT PROJECT REQUIREMENTS
ZAK 2018| Johannesburg I April 2018 6
• Project description: Nidapark Küçükyalı
– Location: Istanbul, TUR
– Type: mixed use, 3 towers 30+ & 40+ floors
– Consultant: CWG
• Project challenges:
– High wind load up to 60kN
– Horizontal/ longitude loads
– Slab to curtain wall 30 cm distance, extra momet
loads
– Different floors configuration
• Proposed solution & benefits:
– Hilti HAC cast-in channel
– only 1 size of cast-in channels to be used +
special solutions on the corners
VALUE ENGINEERING EXAMPLES – QUICK AND RELIABLE SOLUTION FOR LIMITED FIXATIONS
ZAK 2018| Johannesburg I April 2018 7
• Project description: Boulevard Crescent
– Location: Dubai, UAE
– Type: residence, 2 towers 47+ & 25+ floors
– Consultant: Inhabit
• Project challenges:
– Fast track project
– Missing anchor channels
– Horizontal/ longitude loads up to 3kN
• Proposed solution & benefits:
– Hilti HST3 expansion anchor
– Best solution for cracked concrete & limited
number of fixations
VALUE ENGINEERING EXAMPLES – SIGNIFICANT COST REDUCTION DUE TO DESIGN OPTIMIZATION
ZAK 2018| Johannesburg I April 2018 8
• Project description: YDA Söğütözü
– Location: Ankara, TUR
– Type: mixed use, 2 towers 20+ & 40+ floors
– Consultant: AXIS
• Project challenges:
– Seismic calculation needed
– High horizontal/ longitude loads up to 25kN
– HDG or stainless steel material
• Proposed solution & benefits:
– Hilti HST expansion anchors with seismic
approval
– Provided solution with significant cost saving! =
M12 HDG instead of M16 SS
ZAK 2018| Johannesburg I April 2018 9
REAL EXAMPLES: VALUE ENGINEERING IN FIRESTOP
ZAK 2018| Johannesburg I April 2018 10
1st Floor
2nd Floor
3rd Floor
FIRESTOP: OVERDESIGNING
Metal box to carry rockwool
High rockwool density in perimeter joint
110 Kg/m3
64Kg/m3
ZAK 2018| Johannesburg I April 2018 11
… AND USING WRONG SYSTEM
Both ASTM and BS EN test multi story assembly but ASTM clearly defines the movement
requirements, while BS 476 treats curtain wall as any other joint without the movement
Non Tested System Tested system w/o consideration of
Curtain wall movement
ZAK 2018| Johannesburg I April 2018 12
SUMMARY - VALUE ENGINEERING
ZAK 2018| Johannesburg I April 2018 13
2 cast-in sizes for different panel shapes and sizes
Cast-in for high sheer (60kN) + wide gap (300mm)
Mech. or chem. Anchor solution to replace missing Cast-in
Cost reduction: HDG vs SS fixing, M12 vs M16
Cost reduction & movement factor : firestop solution without
any steel plate support
ZAK 2018| Johannesburg I April 2018 14
THANK YOU