o_19jdnovcg1eh21852116govv1lgra.pdf

For these constructions there is no prescribed approval procedure
as in building law. In practice usually a certification
by an authorized surveyor is demanded for private-law and
insurance reasons. This certification can be done on the
basis of a structural analysis and/or tests.
Exhibition stand construction
For buildings that are constructed on an approved fairground
or exhibition area according to MBO no license is required.
Often the fairground or exhibition operators establish requirements
and regulations of their own, which get more and
more harmonized.
Information on the fairground regulations can be found via a
link on our homepage.
Examples
1. Example:
• Stage roof height 6.0 m
• base area 80 m 2 ²
• repeated set-up at different places
In this case a model approval in form of a test book
(Prüfbuch) is demanded.
The following documents are required for a test book:
• operation manual
• structural report verified by an approval authority
• drawings of the construction
• material certificates
• building approval
• welding qualification certificate
• verification of low flammability according to DIN 4102-2
The compilation of a test book takes place in three stages:
1. compilation of the documents (customer/stress analyst)
2. verifying and approval of the documents and test set up
with inspection and acceptance
3. compilation of the test book (approval authority)
This process takes easily three months!
The owner bought the material for the stage on short notice
and wants to use the stage for further events. If necessary he
wants to modify the system after the experience of the first
set-up.
Since it is the first set-up of this construction and it is not sure
if it will be built in this way another time, the owner considers
the stage as a one-time special building which has no license
requirements because the set-up is at a town festival.
In this case it is recommended to previously contact the
building supervisory authority since it is not obvious for the
building authority that it is a one-time set-up and because of
that no Fliegender Bau in terms of the regulations. Since the
limit of the dimensions for Fliegende Bauten without license
requirement is exceeded, the building authority can ask for a
test book.
Experience shows that pragmatic solutions are possible if the
building authority is contacted early and all cards are put on
the table. Anyhow, the submission of a test book is almost
always demanded and if a stage has dimensions like that at
most times also the verification by a surveyor (TÜV or Prüfingenieur).
4. Example:
• Podium system height 1.5 m
• base area 20 m 2 ²
• as observation deck for spectators at a parade
This is formally a temporary structure without license requirements,
but the owner needs at least a proof of stability.
Experience shows that the building authority often asks for a
verified structural analysis because of the large number of
people on the podium. This is not necessary if it is a common
podium system in standard assembly with documents of the
manufacturer that show the correct use.
5. Example:
• Permanent installation of a rig in a festival hall
In this case a verified structural report is required.
EVENT TECHNOLOGY II
A test book for a roof stage is valid for three years.
If the final compilation of a test book is not possible before
the first set-up because of a lack of time, it is usually possible
to get a provisional approval for the first operation.
2. Example:
• Stage roof height 4.0 m
• base area 20 m 2 ²
• repeated set-up at different places
This is a temporary structure without license requirements.
The owner has to ensure the stability of the construction what
can usually only be done by a proof of stability. The technical
requirements are the same as for structures with license
requirement. The building authority could therefore demand
a structural report.
3. Example:
• Stage roof height 6.0 m
• base area 60 m 2
• first set-up on a town festival
6. Example:
• Temporary installation of a rig in a festival hall
The manufacturer of the trusses usually publish load charts
with permissible loads for single span beams. If the rig corresponds
to the system of a single span beam, the allowable
load can be determined with these charts. According to BGI
810-3 this loads should be reduced by 20%. If the truss should
be higher utilized or the system is a multi-span beam a
structural report is required at any rate.
205