Architectural designs and Constructability Issues

More documents

Recommendations

Info

ARCHITECTURAL DESIGN ISSUES ‣ The Constructability review session should be planned and organized to produce the best results possible. Depending on the complexity of the project, there may be different methods used during the session. Some methods may include the following: • Focus review on specific areas of the building, or by floor. • Assign certain trades to different people so they can focus on one type of trade (i.e. door issues, wall types, ceiling heights, foundation conflicts, roofing details, etc.). • Review the building by major discipline, such as structure, site work, exterior envelope, architectural, mechanical, electrical, and plumbing. One must perform a separate review of the building envelope and its details, since this is usually a source of post-construction problems. • Architectural review should be done so that all portions of the drawings are completely reviewed, such as floor plans, interior elevations, ceiling plans, finish schedules, sections, and details [9]. 6. Constructability Session: ‣ When planning a Constructability Review session, different Consultant’s staff representing all disciplines of the work should be invited. The review may be divided into areas or by discipline, i.e. Architectural, Structural, Mechanical, Electrical, etc. and include the following invited attendees: - Operations Manager (Optional) - Project Executive - Project Manager (if assigned) - Pre-Construction Manager or Architectural Estimator - Mechanical Estimator - Electrical Estimator - Project Superintendent (if assigned) - Project Engineer (if assigned) ‣ An individual with a good grasp of the entire project should spearhead the review process, and act as a collecting point for comment, suggestions, etc. This team may provide different areas of expertise and a wellrounded review of the Documents focused on past experience and design coordination. ‣ In most instances, the architect, consultants, and/or owner’s representative should be invited to attend, if the Project Executive believes that their presence will facilitate the Constructability review session. ‣ Involving other Consultant’s employees not assigned to the specific project is also helpful, especially if that individual(s) has experience with a particular building type, building product, or architect. ‣ In certain situations, where unique or special construction and systems are part of the design, it may be appropriate to solicit subcontractor and vendor input. ‣ The session should be long enough to allow sufficient time to review all of the documents, which in most cases, will require at least a whole work day, or more. A list of responsibilities should be prepared in advance. Try to arrange for the session to take place in a place where there will be the least amount of distractions and phone calls for the participants, which are disruptive [9]. 7. The sponsor or champion is the driving force behind constructability reviews on projects by: (1) setting project objectives, (2) selecting the contract strategy, (3) selecting which outside consultants or contractors will participate if needed, and (4) funding constructability resources during planning and design [11]. 8. (A) Identify Constructability Features: The first module identifies design-relevant constructability problems in the input IFC-based product model and instantiates them as constructability features. Product features are used extensively in manufacturing to describe the geometric forms or entities in a product model that are important in some aspect of the manufacturing process, (B) Identify Construction Implications: The second module identifies the construction implications for the project-specific constructability features. They currently represent construction implications generically in terms of activities, resources, and resource productivity rates and classify constructability features accordingly. Hence, the system identifies the appropriate construction implication based on the type of the constructability feature, (C) Calculate Costs: The third module calculates the costs of constructability features based on the associated construction implications. At this stage in the reasoning process, calculating the construction costs is straightforward because the system understands how the constructability features affect activities, resources, and resource productivity rates. The output of the third module is a set of prioritized project-specific constructability features and their associated costs [3]. IV. OBJECTIVES AND TOOLS OF THE STUDY In the study, the following objectives are envisaged are fallows: 1) The objective of the research is to accelerate the use of constructability programs through the identification of common architectural constructability issues and identification of key constructability check strategies in related with architectural designs. 2) Changing industry needs have take big leaps in the past two decades. Design and construction practices and project delivery systems have moved into the direction of integration. This has strongly encouraged many practitioners to consider design processes and construction processes concurrently in consecutive phases. By narrowing the gap between design and construction, thru integration, project constructability can be greatly improved. This white paper attempts to 11
AKGEC INTERNATIONAL JOURNAL OF TECHNOLOGY, Vol. 3, No. 1 present the author’s views on how the design process can be further enhanced thru direct integration with the construction process. The paper first presents a brief summary of several recent research efforts that address this issue. The paper then presents a model for integrating the design and construction processes during the preconstruction stage for improved constructability. In the study, the following tools are envisaged: • Collection of data with search in existing observations and studies (Stage 1) • Collection of data based on actual site observations (Stage 2) • Collection of data through a questionnaire paper survey (Stage 3) V. METHODOLOGY OF THE STUDY In order to achieve the objectives set, data was collected from the field practices which are being followed in the building construction and from the different project sites and different locations, also form the professional consultant companies by submitting the questionnaires and abundant meeting with engineers who are forefront in the four field of construction, Architectural, Civil, Mechanical, and Electrical fields. The companies from where data is collected are listed below: • Construction Engineering Sservices(I) Pvt.Ltd • Vedanta Engineering Consultancy Services • Nucon Products Pvt.Ltd • Construction Catalysers Private Limited The type of data collected for stage 3 is based on the information presented in questionnaire: • The questionnaire contains project name, location, building type, date of completion, type of contract, etc; A sample questionnaire is presented in Appendix A. - An attempt is made to explore some Constructability Issues which have been experienced by professional Engineers and Architects, during their lifetime - The information and data collected is analysed in order to achieve the aforementioned objectives based on which few recommendation are made; in order to improve constructability. Constructability Issues and Area of Occurrence: Typical constructability problems from the following disciplines: - Structural - Civil - Mechanical - Electrical - Architectural This excerpt from abstruse projects illustrates the sort of problems that routinely occur “inside” a discipline - in this case and according to the result of first diagram in the area of Figure 3. Constructability Issues and Area of Occurrence in related with architectural designs. Civil and Structural (Figure 3)- where only someone actively looking for discrepancies within the disciplines will find them. As with all similar problems, these (and many others so have discovered) delayed the project for months. Projects status occasionally were as follows when asked to review the project: Majority of field constructions were not building and completing projects as expected. Average of the construction cost were more than Rs 5 million, with the local relevant financing majority. Although a routine Interdisciplinary Coordination Review had been conducted prior to construction, it failed to highlight the serious problems. What was missing A thorough review of each discipline. Figure 4. Rating Contract types with respect to their usage in field of construction(out of 100 %). Contract types: The type of contracting is related to volume of constructability issues(Figure 4), most and best usage were BOT(Build-Operate-Transfer) and DB(Design-Build); In 12
Page 1 and 2: AKGEC INTERNATIONAL JOURNAL OF TECH
Page 3: AKGEC INTERNATIONAL JOURNAL OF TECH

Architectural designs and Constructability Issues

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?