(UNTITLED)

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00810A001900730009-1
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 8
• Document Creation Date: January 12, 2017
• Sequence Number: 9
• Content Type: REPORT

Approved For Release 2006/11/14: CIA-RDP80-0081OA001900730009-1
CENTRAL INTELLIGENCE AGENCY
INFORMATION REPORT
SECRET
SECURITY INFORMATION
COUNTRY Czechoslovakia
Construction of Air Raid Shelters
THE SOURCE EVALUATIONS IN THIS REPORT ARE DEFINITIVE.
THE APPRAISAL OF CONTENT IS TENTATIVE.
(FOR KEY SEE REVERSE)
This Document contains information affecting the Na-
tional Defense of the United States, within the mean-
ing of Title 18, Sections 793 and 794, of the U.S. Code, as
amended. Its transmission or revelation of its contents
to or receipt by an unauthorized person is prohibited
by law. The reproduction of this form is prohibited.
REPORT I
DATE DISTR.
NO. OF PAGES
REQUIREMENT
REFERENCES
5 August 1953
8
5035 Nm 153BE . Actual construction of ts shelter was to begin
April 1953. This type of shelter was designed to accommodate a maximum of
25X1 250 people and to protect them from falling debris, portions
It was not designed to withstand a direct hit, althou
25X1 it could possibly give protection against hits of near misses of bcsm> s
up o and including 100 kg. As designed and constructed, Class II shelters
were divided into separate cells, 3-4 in. wide, 4-6 in. long, and 2.4 - 2.7 in,
25X1 high, each to contain seats or beds. Those fitted with seats were designed
to aveommodate 35 to 50 persons and those with beds to accommiodate up to 25
25X1 persons.
2. Shelter building specifications allowed a maximum protrusion of 80 cm, above
25X1 ground level, This was usually covered over with earth fill. and factory
flooring. Certain pipes necessary to the shelter were permitted to be laid
within this fill in such a manner as to offer the least possible exposure to
25X1 damage. Pipe laying of any sort was held to a minimum. The lowest level of
the shelter had to be built above the highest water level in the building
area, Building of air raid shelters was not permitted in areas containing
25X1 explosives or harmful chemicals. Certain minimum specifications were
required, depending on the construction materials used. The following is a
25X1 list of specifications pertaining to construction. 25X1
SECB
1. Class II type air raid shelters wer
STATE ARMY EV NAVY AIR + FBI
(Not.i Washington Distribution Indicated By "X"i Field Distribution By "#"-N
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r
 SECRET/SECURI Y INFORMATION
of Class II type shelters..
a. Ceiling: concrete; reinforced with rods 20 mm. in diameter;
minimum ;hickness 25 cm.; built to withstand a weight of 1,700
kg. per sq. m. The reinforcement rods were bent and anchored
co the (roofs) wereousa uallyh3Oftot4Oeam. thick when completed.
ceieiling
b. Exterior walls: minimum thickness for brick 75 cm;; minimum
thickness for concrete 60 cm.
a. Interior walls: minimum thickness for brick 45 am,; minimum
thickness for concrete 40 cm. Interior walls were allowed to
be spaced a .maximum inside distance of four meters apart if they
were attached to the outside walls.
d. Floor: concrete or tile depending on sanitary requirements.
There were no specifications.
Class II type shelters were to be built in all plants and factories
as soon as the plants and factories could be surveyed and plans
completed. Defense plants seemed to have priority over all other
plants and work was started on them as soon as Plans were approved.
Some of the defense plants were to have Class I type shelters,
but details of these shelters were not 17 W" to ne" ons not
directly connected with the operation. Class I
shelters were constructed in such a way as o w s an direct hit.
The whole program pertaining to Class I type shelters was so secret
that no one knew just where they were to be.built, but the
assumption was that t Py were mainly for plants directly connected
with the war effort. these shelters were to be built
within the confines of the administration and infirmary buildings
of plants, like the Class II type shelters.
A third type of shelter was being built in the older factories about
one meter below the ground level. This shelter was reinfarced
concrete, cylindrical in shape, with benches along both sides,, The
inside diameter was about 2 m. and the length was 12 m. These
shelter tubes were built at right angles to eachot and each
section was to accommodate no more than 50 people. no further
information as to construction materials or actual oca ons of these
shelters.
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plans for a special air raid shelter
,
lans included the words "for use of the commander
"a
p
his referred to the commander of civil anti-aircraft
?
e en d that this air raid shelter was to be for his use.-~
offer no construction data or information about the furnishingo 01
this shelter. A special group had. worked on the plans for this
shelter; it was headed by an engineer named (fnu) KALINA; his
assistant was (fnu) LACINA. Their office was located in Prague
at Besedni ul. 3.
There were no 4nde a were
under construction o under-
:'ground garages, two-story monolithic & rue u c the
reinforced basements of masonry buildings, but
old German bunkers and pillboxes were to be rebuilt y. some special
military group in the near future.
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 Approved For Release 2006/11/14: CIA-RDP80-0081OA001900730009-1 25X1
SECRET/SECURITY INFORMATION
-3-
There was no organized building of small-group or family-type,
shelters. Private building was forbidden, and the government had
made no provisions for family prat 7 available
protection for private individuals was the old
World War II air raid :shelters whit were =_',tact.
The gre?Ltest concentrated effort seemed to be placed on building
the Class II type air raid shelters to pr t 0 personnel
from falling buildings and other debris . no estimate
About other building efforts. All factor is in all
cities were eventually to have air raid shelters built in the ,)bu't
there was no date set for completion of this large project-, All
of the, new air raid shelter locations were kept secret ..from the
public, and no publicity of any form was given to the construction
project. The only new shelter lie the.
one at the Klement Gottwald New iron s .
All' of the shelter building programs were handled by two offices in
Prague :
a. The Stavo Projekt Construction Office, directly under the
Ministry of Construction, was formed in late 1948. This office
drew plans for and constructed Class I and II type shelters on
a full-time basis as well as handling other construction
programs not connected with air raid shelters. Shelters
were first built by this office in 1951.
b. The Hutni Projekt Construction Agency was established in 1952
to handle construction operations for the heavy industries.
This office first started surveying factory shelter needs in
July 1952. By August 1952 it was working under the.handicap
of a large backlog. .The actual survey team consisted of only
.. 10 men, which was not enough to handle. this large project.
The Prague office began to instruct the local offices to conduct
these surveys and draw up the necessary plans, but, only in the
most urgent cases. These plans were submitted to the main office
for approval and then returned to the local offices. The local
offices' then turned the plans over to the Czechoslovak Construetiora
iational.Enterprise (Ganknalor nske Stavebni Zavody) for the
actual construction. !Tno degree of haste in the air raid
shelter building program except perhaps in the case of very
essential war production plants which required the Class I type
shelters. In cases of new construction, actual shelter building
progressed in proportion to the speed with which the factories
were built. In cases where shelters were to be built in older
factories, no undue haste was noted. As an example, the
National Gas Works in Brno (Mor aveko Slezska Plynara Brno),
which was planning to build shelters, estimated that plans would
be completed in 1952 or 1953 and actual construction be
completed in 1953 or 1954.
Amex Aa
B :
C:
ketch of Class II Type Air Raid Shelter
Sketch of Inner Cell of Air Raid Shelter
Sketch of Special Air Raid Shelter
SECRET
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 Approved For Release 2006/11/14: CIA-RDP80-0081OA001900730009-1 25X1
Amm-A
25X1
SEcRET'/SECUBITY INFORMATION
Sketch of Class II Type A. rz Raid " 1ter?
e e . 200
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. A (font' d) SECRET/SECURITY INFORMATION
La erect
Point #1. AntiggasChamber: air-tight; two specially constructed
steel 3aosx 18o cm. opened in opposite directions r .
Inner door opened toward inside of shelter;outer door,
.opened toward outside exit.
Emer'en Ex t Passage: length had to be proportional to..
e g o u .Td_ n , fw__o such exits were required for shelters
which accommodated 250 people. Exit passages were.
constructed in zigzag or right angle patterns in order
to minimize and decrease the concussion and sound of
exploding bombbs .
'Air Su 1 and purification Room: purified air was supplied
0 the outer from this room and was
electrically heated in winter. Other heating methods
were used when electricity was not available.
#k. Air Filter Ventilation Room.: contained necessary apparatus
pur `ying air in tie event of a gas attack.. Two such
rooms were required for shelters accommodating 250 persons.
#5. Air Intake Tube : for the air filter ventilation room PP?oint #4
These fu bb lengths were proportional to the height of.. he
building in which the shelter was constructed. Two such
tubes were required'for shelters accommodating 250 persons.
#6, First Aid Rte: for gas attack victims and others.
#7.? Looker and Shower Room.
#8. Ken'.s Looker' Room: for changing clothing after being
exposed to gas. #9< Women's Looker Room.
#10'. Stogie. Room: for women's clothing.
#11. Hallway:'. can be equipped with seats spaced at minimum
tt a vat of 95 ems .
#12. Air Raid Shelter Inner Cell: usually equipped to acoonm odate
to .50.persons; sea 13 x 45 oms. with 75am:'?spaoee,
.35 between rows. The aisle was usually 95 cm.. its Width.
#13. Air Raid shelter Inner Cell; equipped with double-docker
s eel beds, TIM am., spaced from 75 to'95 ems.
#14. oiler Room: for hot water; must. be capable of-furnishing-
hot Shower water at a constant ' flow for a period-of at' least
two hours.
#15. To.
#16. Toilet.
#17. Guard Room and Storage : for first aid equipment,
#18. Tool Storage Room: for such items as shovels, picks,
n even o oo p1ete collapse of the shelter.
etc.
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 Approved For Release 2006/11/14: CIA-RDP80-00810A001.900730009-1
.nets B
Petailec
nnex A,
Cale 1:100
SECRET/SECUR TY INYO1MATION
].Sketch of'. Inner Cell of Air Raid Shelter
Points.#12'and l]
Outside Wall: concrete or brick.
?Ims~':?ea s: concrete or brick.
Jvoor: --usua ly wooden,
ea : usually wooden, either beaches or individual chairs.
ems : double=decker,. steel., i.80 a 55.
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SECRET
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summ C SECRET/SE+"TTRTTY INFORMATION
Sketch oP S:pecial.Air, Raid Shelter
1Soale 1:200
$ECRET
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 Approved For Release 2006/11/14: CIA-RDP80-00810A001900730009-1 25X1
Ann= 0 (Cont'd). SECRET/SECURITY INFORMATION
Legend
Point #1.
#2.
.#3.
#4.
#5.
#6.
J7 a
#8.
#9.
Commander's Work Room.
Operations Room.
Inter.:-connecting Chamber.
Telephone Rooms With Switchboard.
Radio Room.
Generator. Power Room.
TestinRoom.
Storage Room.
Storage Room.
#10. Storage.Room.
(Rooms $, 9, and 10 will probably be made into ore ,room..)
#11,. ...Refreshment Room.
#12. Wash,Room and Toilet.
#13 Sanitation Room.
#14. Anti-gas Chamber.
#15: Filter Veutilation Room.
#16. Boiler Room.
SECRET
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