1. Statement:

The late twentieth century experienced an unprecedented demographic shift. The world population more than doubled in the last 40 years. An immediate solution an addressing population growth problem in cities is supporting high-density buildings. Pakistan such other countries turned to high-rise buildings for saving expensive earth. Tall buildings playing as important index in compared with other component of structure spatial -physical of cities in shaping and improving the visual quality of spaces.

In the developing economy of Pakistan, the construction industry of high rise building is encountered by different economic and technical problems which affect the industry in many ways. Also, the construction procedures in Pakistan consume excessive time and resources which have a direct effect on the country’s economy and socio-economic development. Macroeconomic problems in unemployment and inflation add to the existing economic situation in the construction of high rise buildings in Pakistan.

Currently almost all of the significant high rise building in Pakistan are suffering due to the lack of economic sustainability such as HALY tower in Lahore, Centaurus Mall in Islamabad and Bahria Icon Tower, Hoshang Pearl Tower, Dolmen City Mall in Karachi are the audacious examples of construction delay in high rise. The main purpose of this study is to identify the adverse factors affecting delays, cost overruns and lack of economic sustainability in the high-rise building construction projects of Pakistan.

This research with comprehensive relevant literature review will focus in depth on effected high rise buildings as case study considering of socio-economic barriers and cost over runs management issues. The research would be beneficial for all building related professionals dealing with high rise building projects. The research will also establish recommendation for achieving economical sustainability in construction of high rise buildings in Pakistan.

1. Objectives:

   The aim of the research is to be achieved the following research objectives as set out below:

• To identify some hurdles and development barriers that are predominant in the construction industry of high rise buildings in Pakistan.
• To identify the fundamental and most common problems those affect the economy and efficiency of construction process of high rise buildings.
• To explain why there are severe problems, paves the way for speculating about how they might be overcome.
• To identify and rank a set of selected policies necessary for sustaining and stimulating the economy of high rise construction industry.
• To discuss and conclude how to best bring about improvements in the Pakistani high rise construction industry regarding economic sustainability.

1. Literature Survey:

• Aftab.H.Memon , Ismail.A.Rahman and Ade Asmi Aziz (2012) investigated  “Time and cost performance in construction projects in southern and central regions of peninsular Malaysia”. The construction industry in Malaysia has been regarded as industry facing poor performance leading to failure in achieving effective time and cost performance. The major contributors of this poor performance include design and documentation issues, financial resource management, project management and contract administration issues. Further, qualitative study was carried out using semi-structured interviews with the experience personnel involving in managing construction project which resulted in developing 13 mitigation measure to improve time performance and 15 mitigation measure to improve cost performance in construction project. This study will help the practitioners to implement the mitigation measure at planning stage in order to achieve successful construction projects.

• A.S. Ali and S.N. Kamaruzzaman, (2010), investigated “Cost performance for building construction projects in Klang valley”. There are four fundamental constraints needed to be considered when managing the construction projects, which are scope, cost, time, and quality. In order to manage the projects successfully, it is necessary to consider whether the project is within those fours constraints. However, it found that there were many problems on cost performance in many countries. One of the major problems was cost overrun in construction projects. The research is to identify factors that contribute to cost overrun and potential measures to overcome the problem with the focus given to construction projects within Klang Valley. The method used in this research is quantitative based. A