The subsequent improvements on the road between Pangani and Muthaiga, which is part of the
Thika superhighway, was done to address issues of poor level of service, traffic volume capacity
and safety on the road.
High rates of traffic and travel demand, both motorized and non- motorized, paired with poor
road conditions all strangled the mobility and urban access and reduced safety in the
metropolitan area, which has very high rates of road traffic accidents often involving pedestrians

Negligence is often one of the main reasons that lead to the failure and collapse of structures. It
is essential that the important areas of constructions such as investigating soil properties, stresses
from winds, designing for extra loads, earthquakes, investigation of terrains, picking building
materials, workmanship, and supervision of construction works are done keenly without any
sense of negligence (Machuki, 2012).
Some of the natural causes of structural failures and collapse are tornadoes, excessive floods, and

Egg shells are waste materials that primarily end up in landfills and substantially contribute to
environmental pollution. In Kenya the annual egg production is estimated to be 1.2 billion with
the per capita consumption of eggs being at 40. The annual cement production in Kenya is
estimated to be 6.3 billion tons as of December 2016 and continues to grow exponentially.
The production of cement has been the cause of serious environmental problems such as
emissions of gases like carbon dioxide and nitrogen oxides which could potentially led to global