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Shield Room FAQ's
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RF Shield Room Frequently Asked Questions

Series 26 Solid Wall Shield Room

Series 44 Copper Screen Shield Room

 

FIELD TYPE USC-26 TYPICAL ATTENUATION

Magnetic

21 dB at 1 kHz, 58 dB at 15 kHz, 90 dB at 100kHz

Electric

100 dB from 15 kHz to 50 MHz

Plane Wave

100 dB from 50 MHz to 10 GHz

Microwave

100 dB at 10 GHz

FIELD TYPE

USC-44 TYPICAL ATTENUATION

Magnetic

15 dB at 1 kHz, 40 dB at 15 kHz, >50 dB at 100kHz

Electric

> 80 dB at 1kHz, 100 dB from 15 kHz to 10 MHz

Plane Wave

100 dB at 400 MHz, >85 dB at 1 GHz, >75 dB at 2 GHz

Microwave

60 dB at 10 GHz

 

 

What is the standard panel configuration for a Series 26 room ?

 

The floor, ceiling and wall panels are solid wall Series 26 panels

 

 

 

 

 

What is the standard panel configuration for a Series 44 room ?

 

The floor and lower panel are solid wall Series 26 panels

The ceiling and upper walls are copper screen Series 44 panels

 

 

 

 

 

 

 Close Up of Copper screen Panel (Click to Enlarge)

 

 

How much does a Series 26 panel weigh ?

 

Standard Panels weigh ≈ 4.8 lbs / ft²

a 4' x 8' panel weighs 153 lbs

a 4' x 10' panel weighs 192 lbs

a 4' x 12' panel weighs 230 lbs

Lightweight Solid Panels weigh ≈ 2.0 lbs / ft²

a 4' x 8' panel weighs 64 lbs

a 4' x 10' panel weighs 80 lbs

a 4' x 12' panel weighs 96 lbs

How much does a Series 44 panel weigh ?

 

The panels weigh ≈ 2.1 lbs / ft²

  • a 4' x 8' panel weighs 67 lbs

  • a 4' x 10' panel weighs 84 lbs

  • a 4' x 12' panel weighs 100 lbs

   

How much does a Series 26 shield room weigh ?

 

The shield room weighs ≈ 6 lbs / ft² of shielding

a 10' L x 10' W x 10' H shield room has 600 ft² of shield and weighs ≈ 3600 lbs

 

For total load the finished shield room weighs ≈ 7 lbs / ft² of shielding a 10' L x 10' W x 10' H shield room has 600 ft² of shield and weighs ≈ 4200 lbs

How much does a Series 44 shield room weigh ?

 

The shield room weighs ≈ 4 lbs / ft² of shielding

a 10' L x 10' W x 10' H shield room has 600 ft² of shield and weighs ≈ 2400 lbs

 

For total load the finished shield room weighs ≈ 5 lbs / ft² of shielding a 10' L x 10' W x 10' H shield room has 600 ft² of shield and weighs ≈ 3000 lbs

   

Shield Room Detail Drawings


Waveguide Air Vent        Ceiling Details        Ground Stud


Isolation Hanger        Joint Attachment        Panel Joint Detail


Pipe Flange Type        Pipe Insulated        Pipe Threaded

Power Filter (Dual)        Power Filter (Single)        Signal Line Filter

 

Telephone Filter        I/O Panel        Series 26 Panel

 

Series 26 Room         Seismic Bracing        MRI Trench

 

Standard Door Sill        Low Threshold Sill        Heavy Load Flush Sill

 

Computer Floor Sill        Raised Flush Sill        MRI Door Sill

               

   

Questions Common to all Shield Rooms

         
 

What is needed to off load the shield room material ?

 

If you have a loading dock: Best is a forklift, next best is a pallet jack, last resort a lot of strong people (Not recommended) Pry bars, chains or straps to drag the crates from the front of the truck to the back, so you can get it on lift or jack.

If you don't have a loading dock : Best is a forklift, next best is a pallet jack (delivery truck must have a lift gate), last resort a lot of strong people (Not recommended) Pry bars, chains or straps to drag the crates from the front of the truck to the back, so you can get it on lift or jack.

 

 

I have no way of off loading the shield room material ?

 

Let us know before you place the order, we can provide a delivery truck with a lift gate or a fork lift.

If you want us to handle all of the material handling, please let us know (before you place the order).

 
 

How is the room shipped to us ?

 

The door is fully assembled and crated (single leaf doors)

The Series 26 panels are stacked and palletized

The Series 44 panels are crated

The remainder of shield room components are crated

If your room requires I-Beam structural steel it will be bundled

In most cases it is delivered in a closed weatherproof truck

 

 

How many shipments should I expect ?

 

In most cases you will receive 2 shipments

  •    The first shipment will be the palletized USC-26 panels

  •    The second shipment will be the crated room components

 
 

Can I store the shield room crates and panels outside until the installation crew arrives ?

 

Yes, but it must be completely covered by a weatherproof cover and off of the ground. Any water damage to the components is your liability.

 

I have no place to store the shield room components, what do I do ?

 

Just let us know before you place the order, we can arrange for the material to be stored at a local transfer facility near your location and then deliver them to your facility.

 

You can also have the installation crew off-load the material (optional) and build the shield room.

 

 
 

Do the power & I/O filters go on the inside or outside of the shield room ?

 

In most cases, the filters are designed to go on the outside of the shield room.

 

       

 

How much does the crated shield room door weigh ?

 

Steel Framed

 

3.0' x 7.0' RCM-154 weighs 675 lbs   (800 lbs crated)

4.0' x 7.0' RCM-154 weighs 765 lbs   (890 lbs crated)

4.0' x 8.0' RCM-154 weighs 900 lbs   (1025 lbs crated)

6.0' x 7.0' RCM-154 Double Door weighs 1200 lbs (crated in 2 or 3 crates)

 

 
 

How much weight will the floor panels handle ?

 

The USC-26 floor panels are rated at 400 PSI maximum.

We recommend that you do not exceed 250 PSI (Pounds per Square Inch)

 

 

How flat must by your parent room floor be ?

 

Your parent room floor must be flat and level within 1/4" every 10' (Non-Accumulative)

 
 

Can I mount light fixtures, boxes, etc to the shield room walls ?

 

Yes, you can anchor on the inside or the outside of the shield room walls.

Please use  ≤ 5/8" screws  (We recommend self drilling screws)

 

 

 

 

 

 

  How do I wire my RF shield room ?

You can use standard commercial electrical components. We do recommend metallic conduit, fixtures, boxes, etc., this cuts down on any radiated or conducted RF signals generated by the equipment you have installed in the shield room.

Due to the various City, State and Local electrical code variations, we recommend a local certified electrical contractor do the installation of the electrical system.

We recommend braided or multi-strand copper wire or strap for the grounding of the shield room (from ground stud to earth ground)

 

Can I put fluorescent lights in my shield room ?

Yes, but commercially available fluorescent lights do generate RF interference. We recommend incandescent lights. Special RF shielded fluorescent lights are available, but they are expensive.

 

What is the Sound Transmission Coefficient (STC) rating of the rooms?

 

Series 26 solid panels have an STC rating of 30 

Series 44 copper screen panels have an STC rating of 0 

 
   

What door swings are available ?

 

Universal Shielded Door Swing Key

 

RHO - Right Hand Out Swing

          ( From inside the shield room, handle on the left,

           hinges on the right, door swings outward )

LHO - Left Hand Out Swing

          ( From inside the shield room, handle on the right,

           hinges on the left, door swings outward )

RHI -  Right Hand In Swing

          ( From inside the shield room, handle on the left,

           hinges on the right, door swings inward )

LHI -   Left Hand In Swing

         ( From inside the shield room, handle on the right,

          hinges on the left, door swings inward )

 

 
 

How do I clean and lubricate the Fingerstock and RCM mechanisms?

    TriFlow Lubricant

http://www.triflowlubricants.com

 

Plastic Safe. Allows one product to be used in all applications without risk of costly damage to sensitive modern plastics.

Evaporates Rapidly. Reduces maintenance time.

Non-Flammable. Increases user safety.

Chemically Stable. Non-conductive and non-corrosive.

No VOC Formula. Minimizes global warming potential impact.

Contains No Known Ozone Depleting Chemicals. Offers superior performance while complying with the EPA regulations on the use of ozone depleting chemicals.

 
  How do I put floor tile on the shield room floor ?

  

You can purchase 12" x 12" x 1/8", peel & stick, vinyl floor tile from your local big box home improvement store. Then just clean off the floor panel area and peel off the backing of the tile and fill in the area between all of the joint framing members. You will need a straight edge and razor knife or tile cutter to cut the tile to size.

 

How do I put floor tile on the shield room floor,

so there are no framing members showing ?

Fill in the area between the floor framing members with 3/16" or 1/4" thick hardboard. You can glue or screw the hardboard to the floor. Then cover the entire floor with 1/4" to 3/4" thick plywood or tile board (DO NOT use particle board). Again you can glue or mechanically fasten the plywood to the hardboard or floor panel. Then you can use any tile you desire to completely cover the floor (ESD Tile, Vinyl Tile, Ceramic Tile, Etc.) You can also put carpeting on top instead of tile.

 
 

Sheet Metal Gauge Chart (Inches)

     
 
 

 Gauge  

 Mild Steel  

 Aluminum

 Galvanized Steel

 Stainless Steel

3

0.2391

0.2294

 

0.2500

4

0.2242

0.2043

 

0.2344

5

0.2092

0.1819

 

0.2187

6

0.1943

0.1620

 

0.2031

7

0.1793

0.1443

 

0.1875

8

0.1644

0.1285

0.1680

0.1719

9

0.1495

0.1144

0.1532

0.1562

10

0.1345

0.1019

0.1382

0.1406

11

0.1196

0.0907

0.1233

0.1250

12

0.1046

0.0808

0.1084

0.1094

13

0.0897

0.0720

0.0934

0.0937

14

0.0747

0.0641

0.0785

0.0781

15

0.0673

0.0571

0.0710

0.0703

16

0.0598

0.0508

0.0635

0.0625

17

0.0538

0.0453

0.0575

0.0562

18

0.0478

0.0403

0.0516

0.0500

19

0.0418

0.0359

0.0456

0.0437

20

0.0359

0.0320

0.0396

0.0375

21

0.0329

0.0285

0.0366

0.0344

22

0.0299

0.0253

0.0336

0.0312

23

0.0269

0.0226

0.0306

0.0281

24

0.0239

0.0201

0.0276

0.0250

25

0.0209

0.0179

0.0247

0.0219

26

0.0179

0.0159

0.0217

0.0187

27

0.0164

0.0142

0.0202

0.0172

28

0.0149

0.0126

0.0187

0.0156

29

0.0135

0.0113

0.0172

0.0141

30

0.0120

0.0100

0.0157

0.0125

31

0.0105

0.0089

0.0142

0.0109

32

0.0097

0.0080

0.0134

0.0102

33

0.0090

0.0071

 

0.0094

34

0.0082

0.0063

 

0.0086

35

0.0075

0.0056

 

0.0078

36

0.0067

 

 

0.0070

 

 

 

     

 

 

 Last Updated: July 24, 2017

  Copyright © 2001- 2017  R. A. Mayes Company, Inc.

An Electro Mechanical Research and Development (EMRAD) Corporation, Company

 
     
 

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