Lean Principles an Innovative Approach for Achieving Sustainability in the Egyptian Construction Industry 5 From 11
The first one aimed to collect general information about the surveyed organisations to form a profile Of these firms, where the second section focused on investigating how (ECFs) perceive and apply (LPs) in order to deliver sustainable projects. The second section consisted of close ended (rating questions of I to 5 and multiple choice ones) and open ended questions.
After the questionnaire was developed, it was essential totes its effectiveness and identify its problems.
A preliminary test was conducted with colleagues who agreed to take the questionnaire and answer the questions as if they were received from someone unknown and go through the questionnaire again to point out any problem they noted with questions.
After going over the responses of the preliminary test and making changes, the questionnaire was ready for formal testing (Baker, 1994; Czaja and Blair, 1996).
Towards increasing the reliability and validity of the survey questionnaire, content validity was used through ensuring that the designed questionnaire was fully represent the underlying concepts of the subject being studied (Baker 1994).
In addition, a number of specialists were consulted to assess the extent to which the questions relate to the subject being investigated (Nachmias and Nachmias, 1996).
Moreover the same criteria used to analyse the case studies were also adopted when developing the surrey questionnaire to help creating a correlation between the case studies and the survey questionnaire and their data analysis.
- 4. Developing a conceptual framework to promote the adoption and application of(LPs) as a powerful approach for achieving sustainability in the (ECI).
- 5. Outlining research conclusions and recommendations useful to governmental authorities and construction professionals towards achieving sustainability through (LPs).
