Student:	Fatma Dilek ERBAŞ
Supervisor:	Prof.Dr. Hafız Hulusi ACAR
Department:	Orman Mühendisliği
Institution:	Graduate School of Natural and Applied Sciences
University:	Karadeniz Technical University, Turkey

Title of the Thesis:	The Investigation of Approximated Cost and Progress Payment Values for Forest Roads to be Built in on the Mountainously Region
Level:	M.Sc.
Acceptance Date:	18/10/2010
Number of Pages:	88
Registration Number:	i2249

Summary:

Forest roads which provide the realization of forestry applications are expensive

infrastructure facilities. The planning of forest roads as a rational has a great importance

for modern forest management in Turkey which the majority of its forests in mountainous

areas. The stage having the most important affect on the cost of forest road construction is

excavation activities. The excavation costs of forest road change as the amount of

excavated soil and determination of land categories. Determination of the amount of

excavation correctly before the construction of forest roads is vital in terms of cost

calculations correctly. Land classes in forestry practices in our country have determined

with personal experience. The tender bid of forest roads is perfomed with the unit price

procedure determined by the Public Procurement Act (PPA). This condition causes big

differences between the estimated cost before tender and payment progress.

In this study, 70 forest roads as the research areas were chosen which were built in

the 2003-2009 in Artvin (36), Trabzon (23) and Giresun (11) Forest District Office in the

Eastern Black Sea Region. Approximate cost and progress of forest roads were compared

with examining documents before and after the tender. Excel and SPSS programs were

used in the evaluation of the obtained data. In conclusion the differences have been

identified between the estimated cost of the roads and the values of progress especially in

the more sloping areas. For this reason, geophysical methods can be benefited from. In order

to conduct effectively biddings for forest road construction, amount of excavation and its

distribution to land classifications shall be most appropriately determined.