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FUTURE IS NOWVALUE ENGINEERING
16th, April
Cairo, Egypt
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FINDING THE BEST POSSIBLE
SOLUTION W/O COMPROMISING
ON QUALITY
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REAL EXAMPLES: VALUE ENGINEERING IN FIXATIONS
Mechanical Anchors 1
2
3
FASTENING METHODS
Chemical Anchors
Cast In Channel
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VALUE ENGINEERING EXAMPLES – CAST-IN CHANNEL TO ADDRESS VERY LIMITED ACCESS
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• Project description: One Za’abeel
– Location: Dubai, UAE
– Type: mixed use, 2 towers 50+ & 60+ floors
– Main Consultant: WSP
– Façade Contractor: Al Abbar Aluminium
• Project challenges:
– Different panels 3.6m & 4.25m
– Horizontal/ longitude loads up to 20kN
• Proposed solution & benefits:
– Hilti HAC cast-in channels
– only 4 sizes of cast-in channels to be used =
quick installation; post-installed anchors won’t
answer project needs
VALUE ENGINEERING EXAMPLES – SIGNIFICANT COST REDUCTION DUE TO DESIGN OPTIMIZATION
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• 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
– GI or stainless steel material
• Proposed solution & benefits:
– Hilti HST3 expansion anchors with seismic
approval
– Provided solution with significant cost saving! =
M12 GI instead of M16 SS
VALUE ENGINEERING EXAMPLES – CAST-IN CHANNEL TO SOLVE DIFFERENT PROJECT REQUIREMENTS
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• 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
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• Project description: Boulevard Crescent
– Location: Dubai, UAE
– Type: residence, 2 towers 47+ & 25+ floors
– Consultant: Inhabite
• Project challenges:
– Fast track project
– Missing anchor channels and same supplier
should provide solution for the Anchor.
– Horizontal/ longitude loads up to 3kN
• Proposed solution & benefits:
– Hilti HST3 expansion anchor
– Best solution for cracked concrete & limited
number of fixations
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REAL EXAMPLES: VALUE ENGINEERING IN FIRESTOP
4 KEYS TO ENSURE PROPER DESIGN & INSTALLATION
11
• System Selection
• Material submittal &
Estimation.
Design
• Proper Installation
training.
• Applicator (optional)
Installation
• Ongoing installation
quality check.
• Proper records &
documentations
Quality
Control
• 3rd Party inspection.
• Civil defense approval and
handing over to Client.
• Insurance approval
Inspection
Pre- Installation During Installation Handover
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VALUE ENGINEERING – EARLY EJ AND SUPPORT ON SITE
12
Support in the concept design stage through engineering
judgment
Engineering support in construction stage
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1st Floor
2nd Floor
3rd Floor
FIRESTOP: OVERDESIGNING
Metal box to carry rockwool
High rockwool density in perimeter joint
110 Kg/m3
64Kg/m3
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… 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
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SUMMARY - VALUE ENGINEERING
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4 Cast-in sizes for different panel shapes and sizes
Cast-in for high sheer (60kN) + wide gap (300mm)
One supplier for Mech. or chem. Anchor solution to replace missing Cast-in
Cost reduction: GI vs SS fixing, M12 vs M16
Cost reduction: firestop solution without any steel plate support
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THANK YOU
www.hilti.group
