SlideShare a Scribd company logo
1 of 23
Download to read offline
BIM COORDINATION PORTOFOLIO
Architect BIM Coordinator : Mohab Magdy Mohamed
M:0097430327104 Email: Mohab.magdy87@gmail.com
1-Sample for Coordination Process :
2-Sample for Central Files Hirecahy :
SOME SAMPLE FOR PERVIOUS MODELS.
Sample For Discrepancy Flag Inside The model To Detect the Clash Easily
Through The Filters.
1-Sample For Discrepancy Status Inside The Schedule With Discrepancy ID to
Detect and Modify The Clashes Easily Through Discrepancy Flag.
2-Documentation For The Clashes Inside Excel sheet.
SAMPLE FOR INTERFERNCE CHECK REPORT
BY REVIT & NAVISWORKS
INTERFERENCE REPORT BY REVIT:
Interference Report By Navisworks:
SAMPLES FOR BIM COORDINATED 2D&3D CLASHES &
DISCREPENCIES And COORDINATION MEETINGS
ASUMPTIONS WITH STAKEHOLDERS.
BIM Discrepancy Description: References: Status
There is a conflict in the location of (BWO) at the
structure drawings (SM.103A.18) and the arch.
Ceiling (CLG-02) at the Arch. drawings
(AM1.413.18) in (MC.18.03.B21).
SM.103A.18
AM1.413.18
Revit Model
New
ID: AR-FF-347 Page 1/1
Active-BOJV D
Active-BIM
Zone: MU_L3
Active-PMC
Resolved
Stage Description By Date
BIM Team Assumption: Postponed Michael 16-Jul-2013
Coordination Meeting
Action 1:
Refer to dwg no. 280136 Silvia (TO) - Enji 25-Feb-2014
Coordination Meeting
Action 2:
Coordination Meeting
Action 3:
.
Stage Description By Date
BIM Team Assumption: Follow arch drawing and reduce the height of the structural beam. MOHAB MAGDY 20-Nov-2013
Coordination Meeting
Action 1:
Follow RFI no. (405076-1750) Ashraf Mounir -
Enji
15-Jan-2014
Coordination Meeting
Action 2:
Refer to RFI – 405076-1750 rev A Abram Mohsen 17-Sep-2014
BIM Discrepancy
Description: References: Status
Conflict Between Arch DWG
AM1.103.13 And Structural DWG
SM1.103.13 in (MS.13.03.001)
AM1.103.13
SM1.103.13
New
ID: C0-CD- Page1 Active-BOJV
Active-BIM D
Zon MU-L3 Active-PMC
Resolved
Stage Description By Date
BIM Team Assumption: mohab 05-Dec-2014
Coordination Meeting
Action 1:
Issue to be solved between HVAC & Structure as discussed with Francois and
Juan.
surnda-TO 26-Nov-2014
Coordination Meeting
Action 2:
Check the openings with MEP since we will maintain only the ones needed (and in
reasonable locations).
Ahmed amin .
BIM Discrepancy
Description: References: Status
conflict between the structure drawings
(SM2.322.03) and the roller shutter detail
(AM6.955) at MP.12.03.002 ,
MP.13.03.003 , MP.13.03.001
SM2.322.03
SM2.324.03
AM6.955
AM6.954
New
ID: C0-CD-310 Page1 Active-BOJV TO D
Active-BIM Team
Zon MU-L3 Active-PMC
Resolved
Stage Description By Date
BIM Team Assumption: Postponed mohab 24-Feb-2013
Coordination Meeting
Action 1: - -
The
actual
concrete
beam
BIM Discrepancy
Description: References: Status
Conflict in concrete level between structural plan
DWG ( SM1.103)(+47.4) with the arch section
(AM2.344)(+49.4)At the gridline ( S23)
( fall arrest missing in design )
AM1.103
SM1.103
AM2.344
New
ID: C0-CD-308 Page2/2 Active-BOJV TO
Active-BIM Team
Zone MU-L3 Active-PMC D
Resolved
Stage Description By Date
BIM Team Assumption: Follow structural Level and if follow arch DWG we must put handrail in N elev. because different level 1.50m M.Magdy 29-Nov-2013
Coordination Meeting Action
1:
RFI-285062-1926 Dina – Salam– Mary (TO) 07-Jan-2015
Coordination Meeting Action
2:
.
SAMPLES FOR CODING CLASHES
Coding Discrepancy
Description: References: Status
Missing item in BOQ
No foundation with 700mm thickness
in the BOQ
Book 2A – Bill 2 Part 1 - 2/1/2
SM1.10G.19
Element ID: 4045565 New
ID:
001
Pag
e
Active-BOJV
Active-BIM
Zone
:
BOQ
Active-PMC
Resolved
Stage Description By Date
BIM Team Assumption: Assumed to be classified as ‘pad foundation’ (2/1/2/M) mohab 30-Apr-2013
Coordination Meeting
Action 1:
Confirmed samer 13-Jun-2014
Coordination Meeting
Action 2:
-
Coordination Meeting
Action 3:
-
Coding Discrepancy
Description: References: Status
Missing item in BOQ
No foundation with 2000mm
thickness in BOQ
Book 2A – Bill 2 Part 1 - 2/1/2
SM5.451
Revit Element ID: 3632958 New
ID:
002
Pag
e
Active-BOJV
Active-BIM
Zone
:
BOQ
Active-PMC
Resolved
Stage Description By Date
BIM Team Assumption: Assumed to be ‘mat foundationof 1900mm’ (2/1/2/L) Mariam 30-Apr-2012
Coordination Meeting
Action 1:
Confirmed MOHAB 13-Jun-2014
Coordination Meeting
Action 2:
-
Coordination Meeting
Action 3:
-
SAMPLES FOR MANUAL COORDINATION USING 2D
COORDINATION TECHINQUE USING XREF FILES IN
AUTOCAD AND LINKED TO REVIT.
The Progress Modeling & Coordination Status:

More Related Content

Viewers also liked

Haram complementary projects temporary feeding proposals
Haram complementary projects temporary feeding proposalsHaram complementary projects temporary feeding proposals
Haram complementary projects temporary feeding proposalsMohamed Azzam
 
Pinnacle Infotech partaking at 2017 PCI Convention
 Pinnacle Infotech partaking at 2017 PCI Convention  Pinnacle Infotech partaking at 2017 PCI Convention
Pinnacle Infotech partaking at 2017 PCI Convention Pinnacle Infotech
 
Flevy.com - Collaborative Process Mapping
Flevy.com - Collaborative Process MappingFlevy.com - Collaborative Process Mapping
Flevy.com - Collaborative Process MappingDavid Tracy
 
Au 09 Bi Mmeans Business.1.05.10
Au 09 Bi Mmeans Business.1.05.10Au 09 Bi Mmeans Business.1.05.10
Au 09 Bi Mmeans Business.1.05.10friscozephyr
 
Anthony N Dauginas
Anthony N DauginasAnthony N Dauginas
Anthony N Dauginasdauginas
 
Communication & Coordination on a Construction Project Through Building I...
Communication & Coordination on a Construction Project Through Building I...Communication & Coordination on a Construction Project Through Building I...
Communication & Coordination on a Construction Project Through Building I...muhammad87
 
Trusted BIM: Accurate As-Builts for Project Coordination
Trusted BIM: Accurate As-Builts for Project CoordinationTrusted BIM: Accurate As-Builts for Project Coordination
Trusted BIM: Accurate As-Builts for Project CoordinationClearEdge3D Inc
 
Bim101 Aec
Bim101 AecBim101 Aec
Bim101 Aecmarybk
 
BIM and the drywall cover up - A case for division 9
BIM and the drywall cover up - A case for division 9 BIM and the drywall cover up - A case for division 9
BIM and the drywall cover up - A case for division 9 StrucSoft Solutions
 
A Team Plumbing and Drainage Systems
A Team Plumbing and Drainage SystemsA Team Plumbing and Drainage Systems
A Team Plumbing and Drainage SystemsGodwin2012
 
Revit for Small Projects: Is it worth the effort?
Revit for Small Projects: Is it worth the effort?Revit for Small Projects: Is it worth the effort?
Revit for Small Projects: Is it worth the effort?Eric Peabody
 
081204 Virtual Design & Construction
081204 Virtual Design & Construction081204 Virtual Design & Construction
081204 Virtual Design & ConstructionRocio Gonzalez
 
Stages In Construction
Stages In ConstructionStages In Construction
Stages In ConstructionAB MAKASANA
 

Viewers also liked (17)

Haram complementary projects temporary feeding proposals
Haram complementary projects temporary feeding proposalsHaram complementary projects temporary feeding proposals
Haram complementary projects temporary feeding proposals
 
Pinnacle Infotech partaking at 2017 PCI Convention
 Pinnacle Infotech partaking at 2017 PCI Convention  Pinnacle Infotech partaking at 2017 PCI Convention
Pinnacle Infotech partaking at 2017 PCI Convention
 
Bim Facades.Final
Bim Facades.FinalBim Facades.Final
Bim Facades.Final
 
Flevy.com - Collaborative Process Mapping
Flevy.com - Collaborative Process MappingFlevy.com - Collaborative Process Mapping
Flevy.com - Collaborative Process Mapping
 
Au 09 Bi Mmeans Business.1.05.10
Au 09 Bi Mmeans Business.1.05.10Au 09 Bi Mmeans Business.1.05.10
Au 09 Bi Mmeans Business.1.05.10
 
Anthony N Dauginas
Anthony N DauginasAnthony N Dauginas
Anthony N Dauginas
 
Communication & Coordination on a Construction Project Through Building I...
Communication & Coordination on a Construction Project Through Building I...Communication & Coordination on a Construction Project Through Building I...
Communication & Coordination on a Construction Project Through Building I...
 
Reducing Risk with BIM
Reducing Risk with BIMReducing Risk with BIM
Reducing Risk with BIM
 
Trusted BIM: Accurate As-Builts for Project Coordination
Trusted BIM: Accurate As-Builts for Project CoordinationTrusted BIM: Accurate As-Builts for Project Coordination
Trusted BIM: Accurate As-Builts for Project Coordination
 
Bim101 Aec
Bim101 AecBim101 Aec
Bim101 Aec
 
BIM and the drywall cover up - A case for division 9
BIM and the drywall cover up - A case for division 9 BIM and the drywall cover up - A case for division 9
BIM and the drywall cover up - A case for division 9
 
A Team Plumbing and Drainage Systems
A Team Plumbing and Drainage SystemsA Team Plumbing and Drainage Systems
A Team Plumbing and Drainage Systems
 
Revit for Small Projects: Is it worth the effort?
Revit for Small Projects: Is it worth the effort?Revit for Small Projects: Is it worth the effort?
Revit for Small Projects: Is it worth the effort?
 
081204 Virtual Design & Construction
081204 Virtual Design & Construction081204 Virtual Design & Construction
081204 Virtual Design & Construction
 
Stages In Construction
Stages In ConstructionStages In Construction
Stages In Construction
 
BIM, Prefabrication & Design Build
BIM, Prefabrication & Design BuildBIM, Prefabrication & Design Build
BIM, Prefabrication & Design Build
 
HKIBIM Building Information Modelling (BIM) awareness Seminar
HKIBIM Building Information Modelling (BIM) awareness SeminarHKIBIM Building Information Modelling (BIM) awareness Seminar
HKIBIM Building Information Modelling (BIM) awareness Seminar
 

Similar to BIM COORDINATION PORTOFOLIOOO

What you have1) Draft word file2) Feedbacks and comments3) .docx
What you have1) Draft word file2) Feedbacks and comments3) .docxWhat you have1) Draft word file2) Feedbacks and comments3) .docx
What you have1) Draft word file2) Feedbacks and comments3) .docxeubanksnefen
 
The Information Challenge Managing Construction with BIM
The Information ChallengeManaging Construction with BIMThe Information ChallengeManaging Construction with BIM
The Information Challenge Managing Construction with BIMCCT International
 
My Lean + BIM Journey [Nathan Wood, Brazil Lean Conference]
My Lean + BIM Journey [Nathan Wood, Brazil Lean Conference]My Lean + BIM Journey [Nathan Wood, Brazil Lean Conference]
My Lean + BIM Journey [Nathan Wood, Brazil Lean Conference]Nathan C. Wood
 
Smeaton and Watt- Changing Infrastructure & Road
Smeaton and Watt- Changing Infrastructure & RoadSmeaton and Watt- Changing Infrastructure & Road
Smeaton and Watt- Changing Infrastructure & RoadBarun Chatterjee
 
Digital Transformation of the Construction Industry
Digital Transformation of the Construction IndustryDigital Transformation of the Construction Industry
Digital Transformation of the Construction IndustryCCT International
 
Technology Used in Steel Detailing
Technology Used in Steel Detailing Technology Used in Steel Detailing
Technology Used in Steel Detailing AxtellaStructures
 
PARAMETRIC STUDY OF RC BUILDING CONSIDERING DIFFERENT BUILDING CODES edited b...
PARAMETRIC STUDY OF RC BUILDING CONSIDERING DIFFERENT BUILDING CODES edited b...PARAMETRIC STUDY OF RC BUILDING CONSIDERING DIFFERENT BUILDING CODES edited b...
PARAMETRIC STUDY OF RC BUILDING CONSIDERING DIFFERENT BUILDING CODES edited b...M M ALAMGIR HOSSAIN
 
IRJET - Comparison of Seismic Behavior of Multi-Storey Structure with Com...
IRJET -  	  Comparison of Seismic Behavior of Multi-Storey Structure with Com...IRJET -  	  Comparison of Seismic Behavior of Multi-Storey Structure with Com...
IRJET - Comparison of Seismic Behavior of Multi-Storey Structure with Com...IRJET Journal
 
IRJET- Progressive Collapse Analysis of RC Building
IRJET-  	  Progressive Collapse Analysis of RC BuildingIRJET-  	  Progressive Collapse Analysis of RC Building
IRJET- Progressive Collapse Analysis of RC BuildingIRJET Journal
 
Hutch O'Malley McBeath - Building Information Modelling
Hutch O'Malley McBeath - Building Information ModellingHutch O'Malley McBeath - Building Information Modelling
Hutch O'Malley McBeath - Building Information ModellingDerg business alliance
 
Hutch O'Malley McBeath - Building Information Models
Hutch O'Malley McBeath - Building Information ModelsHutch O'Malley McBeath - Building Information Models
Hutch O'Malley McBeath - Building Information ModelsDerg business alliance
 
Roads, Infrastructure and BIM
Roads, Infrastructure and BIMRoads, Infrastructure and BIM
Roads, Infrastructure and BIMCCT International
 
Supply Chain
Supply Chain Supply Chain
Supply Chain Wan Nee
 
Building Services & Civil Engineering Quantities (M5) - (Group Assignment) - BIM
Building Services & Civil Engineering Quantities (M5) - (Group Assignment) - BIMBuilding Services & Civil Engineering Quantities (M5) - (Group Assignment) - BIM
Building Services & Civil Engineering Quantities (M5) - (Group Assignment) - BIMYee Len Wan
 
Me8691 question bank unit 1
Me8691 question bank unit  1Me8691 question bank unit  1
Me8691 question bank unit 1saravana246
 

Similar to BIM COORDINATION PORTOFOLIOOO (20)

What you have1) Draft word file2) Feedbacks and comments3) .docx
What you have1) Draft word file2) Feedbacks and comments3) .docxWhat you have1) Draft word file2) Feedbacks and comments3) .docx
What you have1) Draft word file2) Feedbacks and comments3) .docx
 
The Information Challenge Managing Construction with BIM
The Information ChallengeManaging Construction with BIMThe Information ChallengeManaging Construction with BIM
The Information Challenge Managing Construction with BIM
 
Innovative BIM Solution For Project Management And Quantity Surveying Mr. Ken...
Innovative BIM Solution For Project Management And Quantity Surveying Mr. Ken...Innovative BIM Solution For Project Management And Quantity Surveying Mr. Ken...
Innovative BIM Solution For Project Management And Quantity Surveying Mr. Ken...
 
My Lean + BIM Journey [Nathan Wood, Brazil Lean Conference]
My Lean + BIM Journey [Nathan Wood, Brazil Lean Conference]My Lean + BIM Journey [Nathan Wood, Brazil Lean Conference]
My Lean + BIM Journey [Nathan Wood, Brazil Lean Conference]
 
Smeaton and Watt- Changing Infrastructure & Road
Smeaton and Watt- Changing Infrastructure & RoadSmeaton and Watt- Changing Infrastructure & Road
Smeaton and Watt- Changing Infrastructure & Road
 
Digital Transformation of the Construction Industry
Digital Transformation of the Construction IndustryDigital Transformation of the Construction Industry
Digital Transformation of the Construction Industry
 
BIM Based Project Controls
BIM Based Project ControlsBIM Based Project Controls
BIM Based Project Controls
 
Technology Used in Steel Detailing
Technology Used in Steel Detailing Technology Used in Steel Detailing
Technology Used in Steel Detailing
 
PARAMETRIC STUDY OF RC BUILDING CONSIDERING DIFFERENT BUILDING CODES edited b...
PARAMETRIC STUDY OF RC BUILDING CONSIDERING DIFFERENT BUILDING CODES edited b...PARAMETRIC STUDY OF RC BUILDING CONSIDERING DIFFERENT BUILDING CODES edited b...
PARAMETRIC STUDY OF RC BUILDING CONSIDERING DIFFERENT BUILDING CODES edited b...
 
IRJET - Comparison of Seismic Behavior of Multi-Storey Structure with Com...
IRJET -  	  Comparison of Seismic Behavior of Multi-Storey Structure with Com...IRJET -  	  Comparison of Seismic Behavior of Multi-Storey Structure with Com...
IRJET - Comparison of Seismic Behavior of Multi-Storey Structure with Com...
 
IRJET- Progressive Collapse Analysis of RC Building
IRJET-  	  Progressive Collapse Analysis of RC BuildingIRJET-  	  Progressive Collapse Analysis of RC Building
IRJET- Progressive Collapse Analysis of RC Building
 
Generalization Building Model Using CityGML
Generalization Building Model Using CityGMLGeneralization Building Model Using CityGML
Generalization Building Model Using CityGML
 
Hutch O'Malley McBeath - Building Information Modelling
Hutch O'Malley McBeath - Building Information ModellingHutch O'Malley McBeath - Building Information Modelling
Hutch O'Malley McBeath - Building Information Modelling
 
Hutch O'Malley McBeath - Building Information Models
Hutch O'Malley McBeath - Building Information ModelsHutch O'Malley McBeath - Building Information Models
Hutch O'Malley McBeath - Building Information Models
 
Roads, Infrastructure and BIM
Roads, Infrastructure and BIMRoads, Infrastructure and BIM
Roads, Infrastructure and BIM
 
Supply Chain
Supply Chain Supply Chain
Supply Chain
 
Building Services & Civil Engineering Quantities (M5) - (Group Assignment) - BIM
Building Services & Civil Engineering Quantities (M5) - (Group Assignment) - BIMBuilding Services & Civil Engineering Quantities (M5) - (Group Assignment) - BIM
Building Services & Civil Engineering Quantities (M5) - (Group Assignment) - BIM
 
Concrete technology
Concrete technology Concrete technology
Concrete technology
 
Concrete
ConcreteConcrete
Concrete
 
Me8691 question bank unit 1
Me8691 question bank unit  1Me8691 question bank unit  1
Me8691 question bank unit 1
 

BIM COORDINATION PORTOFOLIOOO

  • 1. BIM COORDINATION PORTOFOLIO Architect BIM Coordinator : Mohab Magdy Mohamed M:0097430327104 Email: Mohab.magdy87@gmail.com
  • 3. 2-Sample for Central Files Hirecahy :
  • 4. SOME SAMPLE FOR PERVIOUS MODELS.
  • 5. Sample For Discrepancy Flag Inside The model To Detect the Clash Easily Through The Filters.
  • 6. 1-Sample For Discrepancy Status Inside The Schedule With Discrepancy ID to Detect and Modify The Clashes Easily Through Discrepancy Flag.
  • 7. 2-Documentation For The Clashes Inside Excel sheet.
  • 8. SAMPLE FOR INTERFERNCE CHECK REPORT BY REVIT & NAVISWORKS
  • 10. Interference Report By Navisworks:
  • 11.
  • 12. SAMPLES FOR BIM COORDINATED 2D&3D CLASHES & DISCREPENCIES And COORDINATION MEETINGS ASUMPTIONS WITH STAKEHOLDERS.
  • 13. BIM Discrepancy Description: References: Status There is a conflict in the location of (BWO) at the structure drawings (SM.103A.18) and the arch. Ceiling (CLG-02) at the Arch. drawings (AM1.413.18) in (MC.18.03.B21). SM.103A.18 AM1.413.18 Revit Model New ID: AR-FF-347 Page 1/1 Active-BOJV D Active-BIM Zone: MU_L3 Active-PMC Resolved Stage Description By Date BIM Team Assumption: Postponed Michael 16-Jul-2013 Coordination Meeting Action 1: Refer to dwg no. 280136 Silvia (TO) - Enji 25-Feb-2014 Coordination Meeting Action 2: Coordination Meeting Action 3: .
  • 14. Stage Description By Date BIM Team Assumption: Follow arch drawing and reduce the height of the structural beam. MOHAB MAGDY 20-Nov-2013 Coordination Meeting Action 1: Follow RFI no. (405076-1750) Ashraf Mounir - Enji 15-Jan-2014 Coordination Meeting Action 2: Refer to RFI – 405076-1750 rev A Abram Mohsen 17-Sep-2014
  • 15. BIM Discrepancy Description: References: Status Conflict Between Arch DWG AM1.103.13 And Structural DWG SM1.103.13 in (MS.13.03.001) AM1.103.13 SM1.103.13 New ID: C0-CD- Page1 Active-BOJV Active-BIM D Zon MU-L3 Active-PMC Resolved Stage Description By Date BIM Team Assumption: mohab 05-Dec-2014 Coordination Meeting Action 1: Issue to be solved between HVAC & Structure as discussed with Francois and Juan. surnda-TO 26-Nov-2014 Coordination Meeting Action 2: Check the openings with MEP since we will maintain only the ones needed (and in reasonable locations). Ahmed amin .
  • 16. BIM Discrepancy Description: References: Status conflict between the structure drawings (SM2.322.03) and the roller shutter detail (AM6.955) at MP.12.03.002 , MP.13.03.003 , MP.13.03.001 SM2.322.03 SM2.324.03 AM6.955 AM6.954 New ID: C0-CD-310 Page1 Active-BOJV TO D Active-BIM Team Zon MU-L3 Active-PMC Resolved Stage Description By Date BIM Team Assumption: Postponed mohab 24-Feb-2013 Coordination Meeting Action 1: - - The actual concrete beam
  • 17. BIM Discrepancy Description: References: Status Conflict in concrete level between structural plan DWG ( SM1.103)(+47.4) with the arch section (AM2.344)(+49.4)At the gridline ( S23) ( fall arrest missing in design ) AM1.103 SM1.103 AM2.344 New ID: C0-CD-308 Page2/2 Active-BOJV TO Active-BIM Team Zone MU-L3 Active-PMC D Resolved Stage Description By Date BIM Team Assumption: Follow structural Level and if follow arch DWG we must put handrail in N elev. because different level 1.50m M.Magdy 29-Nov-2013 Coordination Meeting Action 1: RFI-285062-1926 Dina – Salam– Mary (TO) 07-Jan-2015 Coordination Meeting Action 2: .
  • 19. Coding Discrepancy Description: References: Status Missing item in BOQ No foundation with 700mm thickness in the BOQ Book 2A – Bill 2 Part 1 - 2/1/2 SM1.10G.19 Element ID: 4045565 New ID: 001 Pag e Active-BOJV Active-BIM Zone : BOQ Active-PMC Resolved Stage Description By Date BIM Team Assumption: Assumed to be classified as ‘pad foundation’ (2/1/2/M) mohab 30-Apr-2013 Coordination Meeting Action 1: Confirmed samer 13-Jun-2014 Coordination Meeting Action 2: - Coordination Meeting Action 3: -
  • 20. Coding Discrepancy Description: References: Status Missing item in BOQ No foundation with 2000mm thickness in BOQ Book 2A – Bill 2 Part 1 - 2/1/2 SM5.451 Revit Element ID: 3632958 New ID: 002 Pag e Active-BOJV Active-BIM Zone : BOQ Active-PMC Resolved Stage Description By Date BIM Team Assumption: Assumed to be ‘mat foundationof 1900mm’ (2/1/2/L) Mariam 30-Apr-2012 Coordination Meeting Action 1: Confirmed MOHAB 13-Jun-2014 Coordination Meeting Action 2: - Coordination Meeting Action 3: -
  • 21. SAMPLES FOR MANUAL COORDINATION USING 2D COORDINATION TECHINQUE USING XREF FILES IN AUTOCAD AND LINKED TO REVIT.
  • 22.
  • 23. The Progress Modeling & Coordination Status: