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The basic building material used to construct the walls and gates
of the fortress, is different types of
local stone. More precise treated are the stones in the front side of the
building while for the rest parts are used crushed stones. The building technique is implecton – a better formation of the inner and outer
faces of the building, and in the middle (between both faces) it is filled
with a mixture of white mortar, sand and pebbles. For the alignment of the
fortress walls and gates is used wooden beams(santrachi) laid longitudinal and across . The preserved
wooden beams and marks in the mortar show that the beams are with dimensions 0,20-0,30 X 0,15
– 0, 20 meters. The longitudinal beams are in a distance from 2 to 2,50 while the across beams – 1,80 to 2 meters. The fortress walls are built on the rock
but beforehand is founded mortar base 0,10 m thick.
On the places where the rock is lower , the terrain
is leveled and trenches are dug deep from 0,80 to 1,60 m . The trenches are
stabilized with stones
and a lot of mortar. The techniques and materials used for building the fortification in Ryahovetz are met in other constructions from the late Middle-ages , especially in the capital Turnovgrad.
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