A Study of Lean Construction Practices in Gaza Strip

inventory (Wrong storage of materials. Inadequate stacking and insufficient storage on
site, insufficient instructions about storage and stacking and inappropriate storage
leading to damage or deterioration), transportation (damage during transportation, use
of inadequate tools and equipments, poor storage, far distance between place of working
and storage and unpacked supply), waiting (waiting for design documents and drawings
motion, rework that does not comply with drawings and specifications, rework due to
workers’ mistakes, delays in passing of information to the contractor on products,
waiting for workers or materials or equipments to arrive, equipment frequently
breakdown, delay in commencement of project, delay in performing inspection and
testing by the consultant engineer and suspension of work by the owner and change
orders ), motion (poor schedule to procurement the materials, unnecessary material
handling, tradesmen slow/ineffective, far distance between place of working and
storage, poor distribution of materials in site, lack of proper maintained pathways, and
difficulty in motion of worker in the site ) and over-processing (conversion waste from
cutting uneconomical shapes, using excessive quantities of materials more than the
required, wrong handling of materials, insufficient instructions about handling, lack of
workers or tradesmen or subcontractors’ skill, difficulty in performance and
professional work, interaction between various specialists and using untrained labors).
In this thesis, we shall work on achieving the largest number of lean construction
criteria because the project which was studied was completed. Waste in the value added
process and non-value added process will be eliminated or reduced. These wastes are
particularly found in the project that was studied. Standardization and five why were the
chosen tools to apply and implement lean construction in the Gaza Strip.
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