Kee Klamp Technical Specifications

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(Steel)

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(Aluminum)

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Safety Railing Kits
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The Kee Klamp Fitting

The simple but effective engineering principle of the Kee Klamp Fitting is the foundation of the most versatile pipe connection system available. There are many variations of fitting to suit wide-ranging applications, providing the versatility to achieve virtually any structural configuration.

Kee Klamp fittings are malleable iron castings manufactured to the requirements of ASTM A47-77-32510. A range of fittings to suit eight sizes of pipe is available. A simple hexagon key is the only tool required to create a strong, rigid joint. A recessed set screw, tightened by the hexagon key, firmly locks the pipe into the fitting. The set screw is manufactured in case hardened steel and is Kee Koat® protected against corrosion.

A Kee Klamp fitting (size 5 to 9) can support an axial load of *2000 lbs. per set screw with the set screw tightened to a torque of 29 lbs. ft. This is normally obtained when the screw is fully tightened using a ratchet wrench.

(*rating includes a safety factor)


Sizing Chart


Kee Klamp steel fittings are designed to suit
Schedule 40 (aluminum and steel) pipe sizes
 

Kee Klamp

Tube Diameter

Nominal

Size

Outside Diameter
(O/D) (in)

Inside Diameter
(I/D) (in)

2

17/32"

1/4"

3

11/16"

3/8"

4

27/32"

1/2"

5

1"

3/4"

6

1 5/16"

1"

7

1 5/8"

1 1/4"

8

1 7/8"

1 1/2"

9

2 3/8"

2"

Specifying Kee Klamp Fittings
The information on fittings in this site is comprehensive, and because of the coding system we have adopted, easy to use.

Diagrams are shown for each fitting showing entry of tube/pipe, a table of dimensions and a definition of use adjacent to its appropriate Type number (10, 15, 20, 25 etc.).

Alongside the Type number is a code (4, 5, 6, 7, etc.) relating to the outside diameter of the tube/pipe for which the Kee Klamp had been designed. The relationship between the Kee Klamp tube/pipe reference and standard tube/pipe outside diameter is explained in the aforementioned chart.

Example: (1) A 10-7 is a Type 10 Kee Klamp fitting with both sockets designed to accept a tube/pipe that has an outside diameter of 42.4mm or 1 11/16" (1 1/4" Nominal Pipe Size). (2) A 25-9 is a Type 25 Kee Klamp fitting with all three sockets designed to accept a tube/pipe that has an outside diameter of 60.9mm or 2 3/8" (2" N.P.S.).

Where more than one tube/pipe reference is shown alongside a particular Type number, it indicates that the individual sockets are designed to accept different sizes of tube/pipe. In a multi-digit code number the first figure relates to the 'A' socket and the second to the 'B' socket. Example (3) A 45-76 is a Type 45 Kee Klamp fitting with 'A' socket accepting a tube/pipe that has an outside diameter of 42.4mm or 1 11/16", and a 'B' socket accepting a tube/pipe that has an outside diameter of 33.7mm or 1 11/32".

While Kee Klamp can give a general guidance relating to the use of each Kee Klamp fitting detailed in this site, the nature of the product means that the ultimate responsibility for selecting the correct fitting for an application must lie with the customer.

The customer should also ensure that the existing structure to which the Kee Klamp construction is being secured, is of sufficient strength to support both the self weight of the Kee Klamp construction and the imposed loads applied, including wind loads, snow loads, and any other superimposed loads.


Beam Load Table

For uneven load distributions or single spans, the required pipe size must be determined by standard bending moment calculations assuming a Kee Klamp joint to give a simply supported beam. The table shown below gives an indication only of the safe load uniformly distributed, in lbs., that may be carried per shelf consisting of front and back tubes when used as continuous beams. Recommended set screw torque: 29lbs./ft.

At loads greater than 2023 lbs., consideration must be given to set-screw slip.

impbeam.gif (6934 bytes)

 

BEAM LOAD TABLE ( lb )

KK FITTING

Size 5

Size 6

Size 7

Size 8

Size 9


SIZE OF PIPE

¾" N.B.

1"
N.B.

1¼" N.B.

1½" N.B.

2" N.B.


GRADE OF MATERIAL

SCH. 40

SCH. 40

SCH. 40

SCH. 40

SCH. 40


SPAN

 

SPAN

1'

  1658  

  3123  

  5516  

  7669  

13180

1'

2'

829

1562

2758

3834

6590

2'

3'

553

1041

1838

2556

4393

3'

3' 6"

474

892

1576

2191

3766

3' 6"

4'

414

781

1379

1917

3295

4'

4' 6"

368

694

1226

1704

2929

4' 6"

5'

332

625

1103

1534

2636

5'

5' 6"

302

568

1003

1394

2396

5' 6"

6'

277

520

919

1278

2197

6'

6' 6"

255

481

849

1180

2028

6' 6"

7'

237

446

788

1096

1883

7'

7' 6"

221

417

735

1023

1757

7' 6"

8'

207

390

690

959

1648

8'

9'

184

347

613

852

1464

9'

10'

166

313

551

767

1318

10'

Table reflects a safety factor of 1.67:1


Upright Load Table

This table gives an indication only of the safe load, in lbs., that may be carried between the above restraints by single Schedule 40 pipe, 30000 PSI, when used as uprights. Loads listed under 'A' columns refer to those loads that are obtainable according to schematic 'B'. Schematic 'B' details a racking system that is mechanically affixed to the surface on which it stands, whereas Schematic 'A' details a free-standing racking system. Recommended screw torque: 29 lbs./ft.

 

UPRIGHT LOAD TABLE ( lb )

 

KK
FITTING

Size 5

Size 6

Size 7

Size 8

Size 9

 

SIZE OF
PIPE

¾" N.B.

1" N.B.

1¼" N.B.

1½" N.B.

2" N.B.

 

MATERIAL
GRADE

SCH. 40

SCH. 40

SCH. 40

SCH. 40

SCH. 40

Length

A

B

A

B

A

B

A

B

A

B

Length

1' 0"

1868

2045

3243

3390

4445

4635

5238

5403

7738

7975

1' 0"

1' 3"

1633

1855

2958

3183

4213

4445

4955

5235

7398

7635

1' 3"

1' 6"

1420

1633

2673

2958

3875

4213

4650

4955

7160

7443

1' 6"

1' 9"

1213

1493

2375

2705

3630

3948

4395

4730

6785

7160

1' 9"

2' 0"

995

1283

2108

2480

3335

3715

4138

4500

6448

6843

2' 0"

2' 3"

840

1058

1813

2245

3048

3470

3883

4268

6210

6685

2' 3"

2' 6"

700

953

1583

2020

2753

3273

3570

4003

5848

6355

2' 6"

2' 9"

603

823

1395

1780

2505

2993

3243

3730

5575

6063

2' 9"

3' 0"

N/A

700

1220

1583

2170

2703

2985

3523

5180

5835

3' 0"

3' 3"

N/A

635

1078

1435

1993

2563

2698

3283

4863

5520

3' 3"

     

948

1288

1810

2283

2418

3083

4525

5270

3' 6"

     

N/A

1160

1643

2085

2250

2858

4218

4978

3' 9"

     

N/A

1025

1488

1938

2065

2603

3880

4818

4' 0"

         

1313

1783

1880

2393

3675

4503

4' 3"

         

1215

1643

1698

2225

3303

4218

4' 6"

         

N/A

1488

1560

2098

3123

3958

4' 9"

         

N/A

1363

1450

1920

2918

3675

5' 0"

         

N/A

1270

N/A

1785

2693

3415

5' 3"

             

N/A

1698

2523

3268

5' 6"

             

N/A

1520

2398

3088

5' 9"

             

N/A

1450

2150

2918

6' 0"

                 

2048

2715

6' 3"

                 

1878

2578

6' 6"

                 

N/A

2398

6' 9"

                 

N/A

2263

7' 0"

                 

N/A

2150

7' 3"

                 

N/A

2048

7' 6"

Table reflects a safety factor or 2:1

N/A

1913

7' 9"


Vibration Test Report
TEST REPORT: Vibration of Kee Klamp Assemblies

Exhaustive tests on samples of standard size 7 Kee Klamp fittings were performed by an independent research laboratory. The purpose of the test was to evaluate the use of either standard set-screws or self-locking set screws.

Test Arrangement
A "Tee" section test assembly was made using three 300mm lengths of galvanized 1 ¼" standard pipe held together by a socket Tee fitting (Type 25-7). The vertical leg of the test assembly was supported in a standard railing flange (Type 62-7). The completed assembly was then rigidly attached to the vibration table.

The test assembly was initially assembled using standard set screws and tested in the configuration. The standard set screws were then replaced with self-locking set screws and the tests repeated.

Test Procedure
The test was conducted on a Ling 667 kg Electromagnetic vibration table.

The table was programmed to perform a resonance search between 25 and 350 Hz. The following table details the resonant frequencies that were recorded.

During the resonance search amplification factors, Q, were measured at each resonant frequency, the point of reference being the end of one horizontal pipe. The table was then held at one of the resonant frequencies, set in motion with a controlled acceleration level of 4g, and run for a period of six hours. This was repeated for three more resonant frequencies in descending order of "Q" factor.

Resonance

Frequencies

Q Factor

Running Time

74

1.27

Nil

106

1.27

Nil

158

1.53

6 hours

200

1.8

6 hours

221

5

6 hours

295

9

6 hours

During the twenty-four hours of vibration at the four resonant frequencies above no signs of loosening with either type of set screw occurred.

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