The document provides information about the Lazarica Church located in Kruševac, Serbia. It was built in 1375-1378 as an endowment of Prince Lazar of Serbia. The church is in the form of a trefoil with a dome over the central area and narthex. An acoustic study was conducted to examine how the presence of people, the dome, and the iconostasis influence the church's acoustic properties.

1. HISTORICALACOUSTICS
LAZARICA CHURCH, SERBIA
SUBMITTED TO:- SUBMITTED BY:-
AR. ROBBIN DIWEDI PALAK GARG
B.ARCH IIIRD YR.
1800701

2. INTRODUCTION
 Church of the Holy First Martyr
Stephen better known as the Lazarica
Church , is a Serbian Orthodox church
in Kruševac, Serbia
 It was built in 1375-1378 as
an endowment of prince Lazar of Serbia.
ARCHITECTURE:-
 The church is in the form of a trefoil, a variant
of the cruciform plan, with three bays in
length, a dome over the central area
and narthex, originally with open side
passages
 It has a semicircular apse on the inside, which
is five-sided on the outside, with attached
colonettes.
 The church is oriented five degrees from a
perfect west–east orientation.

3.  The foundation of Lazarica is at an elevation of 159 metres
(522 ft).
 Internal length, from the top of the altar apse to the west wall
of the narthex, is 15.65 feet (4.77 m).
 The western width of the nave is from 5.15 to 5.20 metres
(16.9 to 17.1 ft) and the radius of the apse ranges from 1.61
to 1.65 metres (5 ft 3 in to 5 ft 5 in).
 Internal height to the apex of the semicalotte main dome is
17.25 metres (56.6 ft). Wall thickness ranges from 1 to 1.75
metres (3 ft 3 in to 5 ft 9 in).
 The foundations were laid at a depth of 0.60 metres (2 ft
0 in).[4]
 Lazarica's masonry is basically Byzantine style: continuity of
horizontal rows of dressed white sandstone with three rows
of brick joints associated with thick plaster, without insisting
on randomly placed bricks.
 A peculiar process was used to draw thick mortar joints out
from the wall.[

4. SECTION
PLAN
LAZARICA CHURCH

5. ACOUSTICAL STUDY
The acoustic model was used to examine the acoustic effect of (1) the
space occupancy, (2) the dome and (3) the iconostasis. The first case
simulates the real-life situation when faithful attend the service. The
goal was to examine how the presence of people influence the church
acoustic properties. An estimated 50 people are considered. The second
case analysis was intended to determine the effect of the dome on the
final acoustic response of the space. In this sense, a model with a flat
ceiling on the place of the dome was formed , and its acoustic response
was compared with the acoustic response of the regular model. The
third case considers the altar barrier, the iconostasis, which used to be
significantly lower in height in medieval period. Thus, the acoustic
parameters were compared for the empty church model as it is today
(with the iconostasis 4.35 m high) and as it was in medieval times (2.2
m high).