Weight of 1000 was determined by weighing beans with a digital balance. Porosity was measured utilizing
equipment and its related equation described by Mohsenin (1986). Porosity meter consisted of two bottles having
the same volume and connected with glass tube for air supply. The tube was connected to an air pump at one end
and a manometer situated between two bottles, and equipped with three valves to enable to measure air pressure in
the bottles. During operation the second bottle was filled up with beans to be tested. Air was pumped into the first
bottle and its pressure was red as P1. Pressured air in the first bottle was then distributed to the second bottle and
after air pressures in two bottles were in balance, the manometer reading was taken, P2. Knowing P1 and P2 the
porosity was obtained. Due to the given bulk volume of beans and employing the value of porosity together with the
weighted sample, density and true density were calculated. Coefficient of static friction was determined on
aluminium sheet. It was calculated from angle of friction measurement. Hollow plastic foam box measuring 10 cm
x 10 cm x 4 cm and adjustable tilting table covered with aluminium sheet were used to measure angle of friction.
The box was filled by the beans, placed on the table and then the surface was raised up gradually until the box
just started to slide down. The angle of the surface was red from a scale mounted on the table and the coefficient of
static friction was calculated as the tangent of this angle. To measure angle of repose a hollow plastic cylinder
having 7 cm in diameter and 7.5 height and metallic pin hanging on a rope with adjustable position were used. The
cylinder was placed fully with beans, placed on a table and then dragged quickly in vertical direction to release the
beans. A conic pile of beans was formed and the height of its peak was located with the hanging pin in order to
measure it. The horizontal distance of the pile from its peak to the representative radius of conic pile was measured
and together with the height of the peak in order to determine the angle of repose being measured. ANOVA and
DMRT 5% of SPSS statistical package programs were employed to analyze the experimental data.