Minimum requirements for project in Dubai
Items
DWC
Trakhees
(JAFZA)
Dubai
DIC
Loading code
ASCE 7-05
Design Code
AISC -2005; British codes are also accepted if required
Primary BUS thickness (mm)
6 web 6 flange
6 web 6 flange
Endwall BUS thickness (mm)
6 web 6 flange
6 web 6 flange
6 web 6 flange
Mezz. Joist & beam BUS thickness
(mm)
6 web 6 flange
6 web 6 flange
6 web 6 flange
Other BUS thickness
6 web 6 flange
6 web 6 flange
6 web 6 flange
Cold formed section thickness
As per design
As per design
As per design
Wind speed 3 sec gust
45(m/s)
45(m/s)
Min. Load 1 kN/m2 (or) Actual
if work out more than 1 kN/m2
for 45 m/s wind load
45(m/s)
Wind exposure
C
C
C
C
Seismic load
Zone 2A UBC 1997
Dead + Collateral Load (min)
0.5 kN/m2
0. 5 kN/m2
0.5 kN/m2
0.5 kN/m2
Temperature load difference
+/-25°c
+/-25°c
+/-25°c
+/-25°c
Mezz floor finish load
Customer data
Customer data
Customer data
Customer data
Mezz collateral load
Customer data
Customer data
Customer data
Customer data
Sag rods diameter
12mm
16mm
12mm
12mm
No. of sag rods
As per Design
Purlins for bays less than 9m
200mm depth Minimum
Purlins for bays more than 9m
250mm or 300mm depth Minimum
Roof bracing type
Rod
Rod
Rod
Rod
Wall bracing type
Rod
Angle
Rod
Rod
Type of design
LRFD
Stress ratio limit
0.90
Primary steel painting
customer data
240 microns
customer data
Purlin design-pattern loading
No
Yes
No
No. of anchor bolts
Minimum of 4 nos. per column
Flange brace thickness
4 mm minimum
NOTE:
1.
2.
3.
4.
5.
6.
Dubai building code 2021 Edition
3D – Analysis in STAAD is required.
Deflection limits should be followed as per Dubai building code 2021 Edition.
Kz = 2.3 (or to be calculated as per code)
Bolt to bolt distance in connection plates should not be more than 300mm.
Wall girt to be considered at base instead of base angle.
Steel beam to RCC wall/ column connection should be with chemical bolts instead of anchor bolts.
No
Minimum requirements for project in Sharjah, Ajman, Umm-al-Quwain, Ras al khaimah
Items
Hamriya
Ajman
Sharjah
UAQ
RAK
Loading code
ASCE 7-05
Design Code
AISC -2005 ; British codes are also accepted if required
Primary BUS thickness (mm)
6 web 6 flange
4 web 6 flange
Endwall BUS thickness (mm)
6 web 6 flange
4 web 6 flange
4 web 6 flange
Mezz. Joist & beam BUS thickness
(mm)
6 web 6 flange
4 web 6 flange
4 web 6 flange
Other BUS thickness
6 web 6 flange
4 web 6 flange
4 web 6 flange
Cold formed section thickness
As per design
As per design
As per design
Wind speed 3 sec gust
Min. Load 1 kN/m2 (or)
Actual if work out more
than 1 kN/m2 for 45 m/s
wind load
45(m/s)
45(m/s)
Wind exposure
C
Seismic load
Zone 2B UBC 1997
Dead + Collateral Load (min)
0.4 kN/m2
Customer data
Customer data
Customer data
Temperature load difference
+/-25°c
+/-25°c
+/-25°c
+/-25 °c
Mezz floor finish load
As per project specification
Mezz collateral load
As per project specification
Sag rods diameter
12mm
12mm
12mm
12mm
No. of sag rods
As per Design
Roof bracing type
Rod
Rod
Rod
Rod
Wall bracing type
Rod
Rod
Rod
Rod
Type of design
LRFD
LRFD
Stress ratio limit
0.95
Primary steel painting
Customer requirement
No. of anchor bolts
Minimum of 4 nos. per column
Flange brace thickness
4 mm minimum
NOTE:
1.
2.
3.
4.
5.
6.
7.
ASCE 7-05
45(m/s)
Zone 2A UBC
1997
3D – Analysis in STAAD is required, MBS can be used for box buildings in RAK & Sharjah only.
Deflection limits should be followed as per AISC -2005 & ASCE 7-05.
Kz = 2.3 (or to be calculated as per code)
For UAQ Municipality, maximum Purlin & Girt Spacing should not Exceed 1.2M (Civil Defense Requirement)
Bolt to bolt distance in connection plates should not be more than 300mm.
Wall girt to be considered at base instead of base angle.
Steel beam to RCC wall/ column connection should be with chemical bolts instead of anchor bolts.
Minimum requirements for project in Abudhabi, Al Ain, Western Region(WRM) &
CMW
Items
Abudhabi
Al Ain
WRM
CWM
Loading code
Abudhabi Building Code (ADIBC)
Design Code
AISC -2005
Primary BUS thickness (mm)
5 web 6 flange
5 web 6 flange
6 web 6 flange
6 web 8 flange
Double side weld
Endwall BUS thickness (mm)
5 web 6 flange
5 web 6 flange
6 web 6 flange
6 web 8 flange
Mezz. Joist & beam BUS thickness
(mm)
5 web 6 flange
5 web 6 flange
6 web 6 flange
6 web 8 flange
Other BUS thickness
5 web 6 flange
5 web 6 flange
6 web 6 flange
6 web 8 flange
Purlin CRFS thickness
2mm
2mm
2.5mm
Girt CRFS thickness
As per design
As per design
2.5mm
Wind speed 3 sec gust
45 m/s
Wind exposure
C
IBC 2009 ; Site class B, Ss=0.65, S1=0.195, TL=8
For WRM: occupancy category 4 ; site class D, stiff soil, Ss=0.45,S1=0.14,
Importance factor I=1.5;TL=8
Seismic load
Collateral load on roof (min)
Customer data
Live load on purlins
1.0 KN/m2
Temperature load difference
+/-35°c
Mezz floor finish load
As per project specification
Sag rods diameter
No. of sag rods
Roof bracing type
+/-35°c
+/-35°c
+/-35°c
12mm
As per Design
Rod
12mm
12mm
12mm
Rod
Rod
Angle
Wall bracing type
Rod
Rod
Rod
Angle
Type of design
LRFD
Stress ratio limit
0.95 for primary steel
Primary steel painting
Customer requirement except in CMS where 240 microns epoxy paint
No. of anchor bolts
No restriction except CMS & WRM where 8.8 grade is required.
Flange brace thickness
4 mm minimum; In CMW jobs flange brace should be 5mm min. In others word the
restrains for the bottom flange should not be taken less than 5m.
Minimum thickness of gusset plates, packing plates & splicing plates in WRM & CMW is 10mm.
NOTE:
1.
2.
3.
4.
5.
6.
3D – Analysis in STAAD is required.
Deflection limits should be followed as per Abudhabi Building Code (ADIBC).
Kz = 2.3 (or to be calculated as per code)
Bolt to bolt distance in connection plates should not be more than 300mm.
Wall girt to be considered at base instead of base angle.
Steel beam to RCC wall/ column connection should be with chemical bolts instead of anchor bolts.
Special consideration for projects with Capital Consultant
➢
➢
➢
➢
➢
Minimum plate thickness for Web must be 5mm.
Strut tubes must be provided on Eave at Braced Bay locations.
Strut purlins in End bays & in Braced bays along wind column locations.
8.8 Grade Anchor bolts must be used.
Minimum 500mm Embedment length for Anchor bolts.