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Design-Construction Interface Dissonances

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1 Design-Construction Interface Dissonances
M S T H E S I S Design-Construction Interface Dissonances Presented By; Faisal Manzoor Arain

2 MS Thesis Presentation
Research Objectives To Assess the Professional Interfaces between Designer and Constructor. To Identify Potential Dissonances of Design & Construction Common Boundaries. To Provide Suggested Solutions & Recommendations. 6th May 2002 MS Thesis Presentation

3 Research Scope & Constraints
Large Building Projects; (SR 20 Millions or more). Selection Context; (Eastern Province of Saudi Arabia). Selection of (Grade-2 or above) Construction Contractors. Eminent Architectural Consultant Firms. 6th May 2002 MS Thesis Presentation

4 Research Methodology Literature Review
Development of list of dissonances (Guideline for Documentation) Development of Initial Questionnaire Pilot Study :Detail documentation of Selected Projects Development of Final Questionnaire Questionnaire Survey Data Collection Data Analysis Conclusions & Recommendations 6th May 2002 MS Thesis Presentation

5 MS Thesis Presentation
Pilot Study Selection of Large Building Projects in Eastern Province. Al-Rashid Tower (Al-Khobar) AL-Hussaini Commercial Center. (Dammam) AL-Subeaei Commercial Complex. (Al-Khobar) 6th May 2002 MS Thesis Presentation

6 MS Thesis Presentation
Al-Rashid Tower (Al-Khobar) Project Owner Mr. Salah Ali Rashid Designer Samir Khair Allah Associates (Lebanon) Contractor Saudi United Company Construction Management Universal Cooperation for Industries & Trad. 6th May 2002 MS Thesis Presentation

7 MS Thesis Presentation
Al-Hussaini Commercial Center (Dammam) Project Owner Mohd. Adil Al-Hussaini Designer & Consultant Saudi Designer Engineering Consultants Contractor Saudi Wiemer & Trachte Ltd. 6th May 2002 MS Thesis Presentation

8 MS Thesis Presentation
Al-Subeaei Commercial Complex (Al-Khobar) Project Owner M. & Abdullah Al- Subeaei Designer Saudi Consolidated Engineering Co. Contractor Swayeh Company Construction Management Dar-ul-Riyadh Consultants 6th May 2002 MS Thesis Presentation

9 MS Thesis Presentation
Inference Detail discussions with Professionals on Reality scenario. Perception Variance in professionals. Verification of Questionnaire. No additional indication of Dissonances by Professionals on Pilot Projects. 6th May 2002 MS Thesis Presentation

10 Professional Opinions
Most Important Origins of Potential Dissonances TEXT Involvement of Designer as design consultant. Involvement of contractor as consultant. Lack of coordination between professionals. Insufficient working drawing details. Contractor’s lack of comprehension of drawings details& Specifications. Least Important Origins of Potential Dissonances TEXT Involvement of contractor in design conceptual phase. Involvement of contractor in design development phase. Project construction management as individual professional service. Nationality of both Construction and Design firms. Weather Conditions. Unforeseen problems. 6th May 2002 MS Thesis Presentation

11 MS Thesis Presentation
Survey Minimum required sample size. Received Responses. 48 responses for Statistical Analysis 6th May 2002 MS Thesis Presentation

12 Results Consultants Responses
6th May 2002 MS Thesis Presentation

13 Results Consultants Responses
6th May 2002 MS Thesis Presentation

14 Results Consultants Responses
6th May 2002 MS Thesis Presentation

15 Results Spearman Correlation
6th May 2002 MS Thesis Presentation

16 Results Descriptive Statistics (Consultants Responses)
Descriptive Statistics (Consultant Responses) MEAN MEDIAN MIN. MAX. RANGE VARIANCE STD_DEV_ Rank Q_01_D_ 1.68 1 4 3 25 Q_02 1.8 24 Q__03 3.36 0.24 04 Q__04 2.88 2 15 Q_05 Q_06 3.4 03 Q__07_C_ 3.44 0.34 02 Q__08 0.25 0.5 Q__09 3.32 05 Q__10 3.2 08 Q__11 0.31 Q__12 2.64 21 Q__13 3.08 11 Q__14 3.12 0.61 10 Q__15 2.96 14 6th May 2002 MS Thesis Presentation

17 Results Descriptive Statistics (Consultants Responses)
Descriptive Statistics (Consultant Responses) MEAN MEDIAN MIN. MAX. RANGE VARIANCE STD_DEV_ Rank Q__16 3.24 3 2 4 07 Q__17 3.36 04 Q__18 3.12 10 Q__19 3.04 12 Q__20 0.49 0.7 Q__21 2.8 17 Q__22 3.16 09 Q__23 3.2 0.25 0.5 08 Q__24 3.52 01 Q__25 2.72 19 Q__26 13 Q__27C_D 3.44 1 02 Q__28 Q__29 Q__30 2.84 16 6th May 2002 MS Thesis Presentation

18 Results Descriptive Statistics (Consultants Responses)
Descriptive Statistics (Consultant Responses) MEAN MEDIAN MIN. MAX. RANGE VARIANCE STD_DEV_ Rank Q__31 2.96 3 2 4 14 Q__32 2.76 18 Q__33 3.44 1 02 Q__34 3.2 0.5 08 Q__35 2.88 0.61 15 Q__36 3.08 11 Q__37 2.8 17 Q__38 2.32 22 Q__39 Q__40 3.12 10 Q__41 3.28 06 Q__42 2.68 0.31 20 Q__43 Q__44 3.36 04 Q__45 2.2 23 6th May 2002 MS Thesis Presentation

19 Results Most Important Origins of Dissonances
Most Important Origins of Potential Dissonances Actual # TEXT Rank Q_24 Contractor’s lack of comprehension of Drawings details and specifications. 01 Q_02 Lack of designer knowledge of available material and equipments. 02 Q_27 Design Complexity. Q_28 Buildability. Q_33 Obstinate nature of participants. Q_06 Time limitation in design phase. 03 Q_08 Incomplete & inadequate plans and specifications. Q_03 Lack of stipulated data. 04 Q_05 Lack of human resources for design firm. Q_17 Design Errors. Q_20 Lack of coordination between professionals. Q_09 Insufficient working drawing details. 05 Q_11 Lack of mutual respect between designer and contractor. 6th May 2002 MS Thesis Presentation

20 Results Least Important Origins of Dissonances
Least Important Origins of Potential Dissonances Actual # TEXT Rank Q_01 Involvement of contractor in design conceptual phase. 01 Q_02 Involvement of contractor in design development phase. 02 Q_45 Project construction management as individual professional service. 03 Q_38 Nationality of both Construction and Design firms 04 Q_12 Exotic design and technology. 05 6th May 2002 MS Thesis Presentation

21 Results Contractors Responses
6th May 2002 MS Thesis Presentation

22 Results Contractors Responses
6th May 2002 MS Thesis Presentation

23 Results Descriptive Statistics (Contractors Responses)
Valid N Mean Median Sum Min. Max. Variance Std.Dev. Rank Q_01__D_ 24 2.75 3 66 1 4 14 Q__02 68 13 Q__03 73 2 11 Q__04 15 Q__05 83 04 Q__06 76 09 Q__07_C_ 3.375 81 06 Q__08 Q__09 86 03 Q__10 3.625 87 02 Q__11 Q__12 58 21 Q__13 2.375 2.5 57 19 Q__14 18 Q__15 6th May 2002 MS Thesis Presentation

24 Results Descriptive Statistics (Contractors Responses)
Valid N Mean Median Sum Min. Max. Variance Std.Dev. Rank Q__16 24 2.5 2 60 1 4 07 Q__17 3 76 09 Q__18 64 15 Q__19 2.75 66 12 Q__20 86 03 Q__21 17 Q__22 73 Q__23 68 08 Q__24 3.125 75 10 Q__25 89 01 Q__26 14 Q__27 71 Q__28 Q__29 56 20 Q__30 53 23 6th May 2002 MS Thesis Presentation

25 Results Descriptive Statistics (Contractors Responses)
Valid N Mean Median Sum Min. Max. Variance Std.Dev. Rank Q__31 24 2 52 1 4 Q__32 55 21 Q__33 3 72 12 Q__34 82 05 Q__35 2.625 63 15 Q__36 2.25 54 22 Q__37 47 27 Q__38 50 26 Q__39 16 Q__40 79 10 Q__41 76 06 Q__42 2.125 51 25 Q__43 3.25 78 Q__44 2.75 66 14 Q__45 43 28 6th May 2002 MS Thesis Presentation

26 Results Most Important Origins of Dissonances
Most Important Origins of Potential Dissonances Actual # TEXT Rank Q_25 Involvement of Designer as design consultant. 01 Q_10 Insufficient communication between contractor and designer dyad. 02 Q_09 Insufficient working drawing details. 03 Q_20 Lack of coordination between professionals. Q_05 Lack of human resources for design firm. 04 Q_34 Participant’s honest wrong beliefs. 05 6th May 2002 MS Thesis Presentation

27 Results Least Important Origins of Dissonances
Least Important Origins of Potential Dissonances Actual # TEXT Rank Q_45 Project construction management as individual professional service. 01 Q_37 Weather conditions. 02 Q_38 Nationality of both Construction and Design firms 03 Q_42 Unforeseen problems. 04 Q_31 Lack of professional experience and judgment. 05 6th May 2002 MS Thesis Presentation

28 Results Combined Evaluation
6th May 2002 MS Thesis Presentation

29 Results Combined Evaluation
6th May 2002 MS Thesis Presentation

30 Results Descriptive Statistics (Combined Evaluation)
Mean Median Sum Min. Max. Variance Std_Dev. Rank Q__01_D_ 2 108 1 4 28 Q__02 113 27 Q__03 3 157 10 Q__04 145 15 Q__05 162 06 Q__06 161 0.375 07 Q__07_C_ Q__08 Q__09 169 02 Q__10 Q__11 151 12 Q__12 124 24 Q__13 134 21 Q__14 136 19 Q__15 140 18 6th May 2002 MS Thesis Presentation

31 Results Descriptive Statistics (Combined Evaluation)
Mean Median Sum Min. Max. Variance Std_Dev. Rank Q__16 3 141 1 4 17 Q__17 160 2 08 Q__18 142 16 Q__19 Q__20 170 01 Q__21 136 19 Q__22 152 11 Q__23 148 14 Q__24 163 05 Q__25 167 03 Q__26 Q__27CD 157 10 Q__28 Q__29 124 24 Q__30 6th May 2002 MS Thesis Presentation

32 Results Descriptive Statistics (Combined Evaluation)
Mean Median Sum Min. Max. Variance Std_Dev. Rank Q__31 2 126 1 4 23 Q__32 3 124 24 Q__33 158 09 Q__34 163 05 Q__35 135 20 Q__36 131 22 Q__37 117 26 Q__38 108 28 Q__39 Q__40 157 10 Q__41 Q__42 118 25 Q__43 150 13 Q__44 166 04 Q__45 98 29 6th May 2002 MS Thesis Presentation

33 Results Spearman Correlation
6th May 2002 MS Thesis Presentation

34 Results Most Important Origins of Dissonances
Most Important Origins of Potential Dissonances Actual # TEXT Rank Q_20 Lack of coordination between professionals. 01 Q_09 Insufficient working drawing details. 02 Q_25 Involvement of Designer as design consultant. 03 Q_44 Involvement of contractor as consultant. 04 Q_34 Participant’s honest wrong beliefs. 05 Q_24 Contractor’s lack of comprehension of drawings details& Specifications. 6th May 2002 MS Thesis Presentation

35 Results Least Important Origins of Dissonances
Least Important Origins of Potential Dissonances Actual # TEXT Rank Q_45 Project construction management as individual professional service. 01 Q_38 Nationality of both Construction and Design firms. 02 Q_01 Involvement of contractor in design conceptual phase. Q_02 Involvement of contractor in design development phase. 03 Q_37 Weather Conditions. 04 Q_42 Unforeseen problems. 05 6th May 2002 MS Thesis Presentation

36 MS Thesis Presentation
Conclusion Designers mostly categorized as design Consultants. Majority of firms are Saudi National. Professional experience range between 5-10yrs. Working relationship between contractor and designer considered as “good relationship”. 6th May 2002 MS Thesis Presentation

37 Conclusion (Most Important)
Top Most Important Origin of Dissonances. 6th May 2002 MS Thesis Presentation

38 Conclusion (Most Important)
Second Most Important Origin of Dissonances. 6th May 2002 MS Thesis Presentation

39 MS Thesis Presentation
Conclusion Third Most Important Origin of Dissonances. 6th May 2002 MS Thesis Presentation

40 MS Thesis Presentation
Conclusion Fourth Most Important Origin of Dissonances. 6th May 2002 MS Thesis Presentation

41 MS Thesis Presentation
Conclusion Fifth Most Important Origin of Dissonances. 6th May 2002 MS Thesis Presentation

42 Conclusion (Least Important)
Top Least Important Origin of Dissonances. 6th May 2002 MS Thesis Presentation

43 MS Thesis Presentation
Conclusion Second Least Important Origin of Dissonances. 6th May 2002 MS Thesis Presentation

44 MS Thesis Presentation
Conclusion Third Least Important Origin of Dissonances. 6th May 2002 MS Thesis Presentation

45 MS Thesis Presentation
Conclusion Fourth Least Important Origin of Dissonances. 6th May 2002 MS Thesis Presentation

46 MS Thesis Presentation
Conclusion Fifth Least Important Origin of Dissonances. 6th May 2002 MS Thesis Presentation

47 MS Thesis Presentation
Recommendations First two Important origins can be diminished through “involvement of contractor in design phases” Third & fourth most important dissonances origins can be handled through “Project management as individual professional service” A neutral participant (Designer or Constructor) would be hired to bridge the schism between professional and working environment. 6th May 2002 MS Thesis Presentation

48 MS Thesis Presentation
Recommendations Need of Establishing Numerous Professional Meetings during Project Phases. Application of Construction Industry Model with necessary modification according to Saudi Arabian Construction Industry Requirements. An Accrediting Body should be Established for surveillance in construction Industry Practices. 6th May 2002 MS Thesis Presentation

49 MS Thesis Presentation
Recommendations Most Sophisticated & Updated Contemporary Professional Courses at institutions level. Certification of Practicing Professionals on International Standards by Regional Certification Boards. 6th May 2002 MS Thesis Presentation

50 Recommendations for Future Researchers
Design-construction interface in the context of Industrial projects and highways. Considering the whole country’s construction industry as survey target. Same survey considering the lower grade contractors and residential projects. 6th May 2002 MS Thesis Presentation

51 MS Thesis Presentation
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THANK YOU 6th May 2002 MS Thesis Presentation


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