Plans OFFICE COPY RECEIVED
• DEC 2 8 2020
CITY OP TIGARD4i
REVIEWED FOR CODE COMPLIANCE CITY OF UiLDING DIVIVO
N
Approved N I '
OTC:
Permit th vpaa-In -cX'? a ,6
Address: 9 8 n o wc,s 1, Sty Rol
Suite#:
B .• Date: f- ( a)
Ancor Placement 1 -40'AIRSCREEN
1/1/2009-version 1.0
O U T D O O R
MOVIES
40' 40'
50'width
Angle is 30 degrees outward
Angle is 30 degrees outward A$ y o Panr(s
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Digitally signed
by COMODO
TRUST
SYSTEMS
A Anchors-5 ton working hold limit at 30 degrees elevation toward screen.Attachment to anchor using a 65 ton 3/4"shackle. Date:
2020.12.23
20:14:59-08'00'
VALIDITY OF PERMIT
THE ISSUANCE OF A PERMIT
BASED ON CONSTRUCTION
DOCUMENTS AND OTHER
DATA SHALL NOT PREVENT
THE CODE OFFICIAL FROM
REQUIRING THE CORRECTION
OF ERRORS. OSSC 105.4
Angenvoort-Kroth+Partner Engineering, Civil Engineering Consultants VBI
Blumentalstra8e 108,D-47798 Krefeld, Germany Te1.+49 2151 6275-0 Fax:-22
- 1 -
Static Calculation
2004-34-05
Planned Construction: Anchorage against wind for Projection walls
at low wind force
Ordering Party: The Airscreen Company
Hafenweg 26
D-48155 Munster
Germany
Posted in Krefeld, Page 1 to 6
The original Static Calculation in German language is the legally binding
version. However, all calculations and measurements given are correct.
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Angenvoort Kroth + Partner Engineering Civil Engineering Consultants VBI
Blumentalstr. 108, D-47798 Krefeld, Germany
Tel. +49 2151 6275-0 Fax +49 2151 6275-22
PROJECT: 2004-34-05 Airscreen Projection Wall
Preliminary Note
Subsequently the occuring wind-related rope forces and therefore necessary weighting ballast are
being determined for pneumatically supported projection walls.
According to DIN 4112 'Flying Constructions' (,Fliegende Bauten") a maximum wind force of 20 m/s
(storm force 8) is used as the determination base. Upon demand of 'The Airscreen Company this
determination base has been changed to storm force 5, being the practicable maximum windforce for
the projection wall.
Due to the fact that the projeciton wall can be completely dismantled within 30 minutes,this constraint
is justifiable.
The pneumaticaly supported construction consists of a frame-like composed tube manufactured from
a synthetic textile. Its own weight is marginal and is being neglected.
Proof of the textile construction and the ropes with their attachment points are not subject of this
calculation.
Wind Strain
The following calculation is based upon a maximum wind force of 10 m/s =36 km/h (storm force 5).
At higher windspeeds,the projection wall Is being dismantled.
Wind Impact Pressure: q=0,10 kN/mz
aerodynamic coefficients: ca=0,8+0,5= 1,3
The height of the projection wall above terrain is less than 20 m.
Ballasting
The projection wall is being anchored with water tanks, water bags, concrete weights or similar items.
In case 4 anchorages are mandatory, the bottom corners have to be warped with the ballast
(alternatively the projection wall is anchored into the ground at its bottom).
Basis
The geometry of the projection walls has been determined by the ordering party.
Measurings are based upon the German norms (in effect at time of calculation in August 2004):
DIN 4112 (02.1983): Flying Constructions('Fliegende Bauten'),
DIN 1055-4 (08.1986): Load assumptions for buildings(wind loads)
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- 3 -
Angenvoort Kroth + Partner Engineering Civil Engineering Consultants VEST
Blumentalstr. 108, D-47798 Krefeld, Germany
Tel. +49 2151 6275-0 Fax +49 2151 6275-22
PROJECT: 2004-34-05 Airscreen Projection Wall
Overview Projection Wall, Warping and Ballasting
Elevation
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Ballast Ballast
Ballast has to be anchored against sliding.
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Ground View
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Ballast " f t H t dBallast
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Ball,_,', I H H I Ballast
wind strain allowed: q=0,1 kWm2=-Wind speed 10 m/s=36 km/h(Storm force 5)
At higher windspeeds,the projection wall must be dismantled.
4 -
Angenvoort Kroth + Partner Engineering Civil Engineering Consultants VBI
Blumentalstr. 108, D-47798 Krefeld, Germany
Tel. +49 2151 6275-0 Fax +49 2151 6275-22
PROJECT: 2004-34-05 Airscreen Projection Wall
Determinination of the necessary Ballasting
General Explanation of the Table
Width of projection wall
outer horizontal measurements of the projection wall:
B [m]
Height of the projection wall
outer vertical measurements of the projection wall:
H [m]
Rope length in Ground view projection
The ropes in 45°are angled in the ground view as well as in the elevation.
la = 2*H2 [m]
Actual rope length
IS =VI92+H2 [m]
Wind force in top and botton corner
F,w =H/2*B/2*cp*q [kN]
Rope traction
Z=Fw *la/H*Is/I9 [kN]
horizontal foundation force including horizontal load from the bottom corner
Fh =Z*I9/I +F *I9/H [kN]
vertical foundation force
F =Z*H/Ia [kN]
necessary ballast
selected ballast weight
G [kN]
Proof of uplift e PRorp
tJ=G/F, >1,43 ���xG 91 P
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- 5 -
Ang envoort Kroth + Partner Engineer Civil Engineering Consultants VBI
Blumentalstr. !_, �meKrefeld, ®�y
Tel. +49 as +49 21516275-
PROJECT: ,_—— _screen Projection Wall
Ballast table
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Angenvoort Kroth + Partner Engineering Civil Engineering Consultants VBI
Blumentalstr. 108, D-47798 Krefeld, Germany
Tel. +49 2151 6275-0 Fax +49 2151 6275-22
PROJECT: 2004-34-05 Airscreen Projection Wall
Extent of the static calculation: Page 1 to 6
Posted in Krefeld on August 25th, 2004
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ANGENVOORT - )(ROTHOTH -
UND PARTNER 1t0�
9ERATENDE INGEN1EURE 481
RiOMENTALSTN. 1N • 4/7911 NNEFETD 5AU
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Dipl.-Ing. Moritz Kroth
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