Attachment 4 Submittal 01 Engineering Letter and Shop Drawings.pdf

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Tactical Infrastructure (TI) Maintenance for Big Bend Sector and El Paso Sector in Texas
Solicitation number
70B01C21R00000007
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About this file

This document package includes an engineering letter and shop drawings analyzing the retrofit design for three border security gates in the El Paso Sector. The letter from SGW Designworks discusses performing finite element analysis on 3D models of the existing gate configurations and proposed retrofit designs to evaluate the impact on structural strength and deflection. It finds the retrofit design would see equal to or less stress and deflection than the current design under equivalent loads. The accompanying seven shop drawing sheets provide further details of the proposed retrofit, including removal of the old aluminum track and installation of a new steel track and drive system, addition of support beams, modification of wheel truck brackets, and installation of hangers and rollers.

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Text version

2417 Bank Dr, Suite 112, Boise, ID 83705 www.sgwdesignworks.com Page 1 of 4

May 24, 2013

Mr. Greg Sloan Sloan Security Group 6851 W. Targee St.

Boise, ID 83709

RE: Gate Retrofit Design for

Yarbrough Gate

CC Bills Gate

Gate East of Fabens POE Gate

Dear Mr. Sloan

You requested that I analyze the gate retrofit design for the 3 El Paso Sector gates in order to verify that the removal of the old gate track and trolley system and installation of the new Hi Motions system (that Sloan has used in the previous K-2C project) would not adversely impact the strength of the existing and remaining structure. I did this by creating 3 dimensional models for the critical structures of both the existing configuration and of the proposed design. Information on the existing design was supplied by Sloan Security group in the form of as-built drawings and pictures. It is important to note that the scope of this analysis did not include footing and foundation design, only the above-ground steel framework at the gate opening and back-track areas. I then applied Finite Element Analysis to these models in order to calculate and compare relative stresses and deflections of the two configurations. The models were virtually loaded using the same conditions and assumptions from the previous Sloan K-2C project and that baseline was used for comparison. The approach was also conservative in that the models were loaded with the worst case assumption that the track adds no strength or rigidity to the system. We know that in reality, the new Hi Motions steel track has much more section and strength than the existing aluminum track. Hand calculations were also used to validate the FEA results.

Results showed that the new configuration (retrofit design) will see equal to, or less than, the same stress and deflection values that the current system, for equivalent vertical, lateral and combined loads. Therefore, there should be no detrimental strength or deflection issues experienced with the new retrofit gate design relative to the existing design. The attached sheets show FEA comparisons of the two configurations for stress and deflection. Please feel free to contact me if you have any additional questions regarding this analysis.

Regards, Michael J. Witt, P.E.

www.sgwdesignworks.com Page 2 of 4

Relative stress distribution comparison of both track systems with combined loading.

www.sgwdesignworks.com Page 3 of 4

Relative stress magnitude and location comparison of both track systems with combined loading.

www.sgwdesignworks.com Page 4 of 4

Relative deflection comparison of both track systems with combined loading.

DETAIL A

SCALE 1 : 16

Remove 8"x3" TS Header

Remove Aluminum Track

Leave 6x2 Header

DETAIL B

SCALE 1 : 16

Leave 6"x6" TS Spacers

This retrofit design package applies to the following gate locations only:

Yarbrough Gate CC Bills Gate Gate East of Fabens POE Gate

Please refer to SGW Designworks cover letter dated May 24, 2013 for analysis information.

D

C

B

AA

B

C

D

12345678

8 7 6 5 4 3 2 1

THE INFORMATION CONTAINED IN THIS

DRAWING IS THE SOLE PROPERTY OF

SLOAN SECURITY GROUP. ANY

REPRODUCTION IN PART OR AS A WHOLE

WITHOUT THE WRITTEN PERMISSION OF

SLOAN SECURITY GROUP IS

PROHIBITED.

DIMENSIONS ARE IN INCHES

TOLERANCES:

FRACTIONAL 1/32"

ANGULAR: MACH 1 BEND 1

TWO PLACE DECIMAL .060"

THREE PLACE DECIMAL .005"

INTERPRET GEOMETRIC

TOLERANCING PER:

MATERIAL

FINISH

DRAWN

CHECKED

ENG APPR.

MFG APPR.

Q.A.

COMMENTS:

DATENAME

SIZE

B

DWG. NO. REV

WEIGHT:SCALE: 1:96

UNLESS OTHERWISE SPECIFIED:

SHEET 1 OF 7

SLIDING GATE

DO NOT SCALE DRAWING

PROPRIETARY AND CONFIDENTIAL ASME Y14-5M-1994

SLOAN SECURITY GROUP

6851 W. Targee St. Boise, ID 83709

208-344-8379

EL PASO SECTOR

GATE RETROFIT FOR:

YARBROUGH GATE•

CC BILLS GATE•

GATE EAST OF FABENS POE GATE•

DETAIL C

SCALE 1 : 16

Install W10x30 Beam (See sheet 3 for details)

Install Track (See sheet 3 for details)

DETAIL D

SCALE 1 : 8

Install Wheel Truck Bracket (See sheet 5 for details)

Install Rollers

DETAIL E

SCALE 1 : 16

Install Hanger Assembly x 5 (See sheet 4 for details)

This retrofit design package applies to the following gate locations only:

Yarbrough Gate CC Bills Gate Gate East of Fabens POE Gate

Please refer to SGW Designworks cover letter dated May 24, 2013 for analysis information.

D

C

B

AA

B

C

D

12345678

8 7 6 5 4 3 2 1

THE INFORMATION CONTAINED IN THIS

DRAWING IS THE SOLE PROPERTY OF

SLOAN SECURITY GROUP. ANY

REPRODUCTION IN PART OR AS A WHOLE

WITHOUT THE WRITTEN PERMISSION OF

SLOAN SECURITY GROUP IS

PROHIBITED.

DIMENSIONS ARE IN INCHES

TOLERANCES:

FRACTIONAL 1/32"

ANGULAR: MACH 1 BEND 1

TWO PLACE DECIMAL .060"

THREE PLACE DECIMAL .005"

INTERPRET GEOMETRIC

TOLERANCING PER:

MATERIAL

FINISH

DRAWN

CHECKED

ENG APPR.

MFG APPR.

Q.A.

COMMENTS:

DATENAME

SIZE

B

DWG. NO. REV

WEIGHT:SCALE: 1:96

UNLESS OTHERWISE SPECIFIED:

EL PASO SECTOR

GATE RETROFIT FOR:

YARBROUGH GATE•

CC BILLS GATE•

GATE EAST OF FABENS POE GATE•

SHEET 2 OF 7

SLIDING GATE

DO NOT SCALE DRAWING

PROPRIETARY AND CONFIDENTIAL ASME Y14-5M-1994

SLOAN SECURITY GROUP

6851 W. Targee St. Boise, ID 83709

208-344-8379

5 1 2 "

5 1 2 "

Track Profile

10 1 2 "

Beam Profile W10 x 30

19'-9"

19'-0" 10'-0"

19'-9"

48'-0"

2'-0" 6'-6"

J

H

2 5 8 "

5 13 16 "

DETAIL H

SCALE 1 : 4

3/8"

3/8" 2-8 3/8" 2-8

4.00

2.00

1.00

1.25

6.00

3.00

DETAIL J

SCALE 1 : 4

1/2" A36 Steel Plate

This retrofit design package applies to the following gate locations only:

Yarbrough Gate CC Bills Gate Gate East of Fabens POE Gate

Please refer to SGW Designworks cover letter dated May 24, 2013 for analysis information.

D

C

B

AA

B

C

D

12345678

8 7 6 5 4 3 2 1

THE INFORMATION CONTAINED IN THIS

DRAWING IS THE SOLE PROPERTY OF

SLOAN SECURITY GROUP. ANY

REPRODUCTION IN PART OR AS A WHOLE

WITHOUT THE WRITTEN PERMISSION OF

SLOAN SECURITY GROUP IS

PROHIBITED.

DIMENSIONS ARE IN INCHES

TOLERANCES:

FRACTIONAL 1/32"

ANGULAR: MACH 1 BEND 1

TWO PLACE DECIMAL .060"

THREE PLACE DECIMAL .005"

INTERPRET GEOMETRIC

TOLERANCING PER:

MATERIAL

FINISH

DRAWN

CHECKED

ENG APPR.

MFG APPR.

Q.A.

COMMENTS:

DATENAME

SIZE

B

DWG. NO. REV

WEIGHT:SCALE: 1:48

UNLESS OTHERWISE SPECIFIED:

SHEET 3 OF 7

SLIDING GATE

DO NOT SCALE DRAWING

PROPRIETARY AND CONFIDENTIAL ASME Y14-5M-1994

SLOAN SECURITY GROUP

6851 W. Targee St. Boise, ID 83709

208-344-8379

EL PASO SECTOR

GATE RETROFIT FOR:

YARBROUGH GATE•

1/4"

TYP 4 PLCS

1/4"

1/2" 1/2"

48"

6"

24"

12"

6"

135° G

G

6"

6"x6"x1/2" TS

1/2" 1/2"

12"

12"

Side Gusset 1/4" A36 Steel Plate

25 1 16 "

5 5 8 "

Gusset Cap 1/4" A36 Steel Plate

SECTION G-G

1/4" 1/4"

This retrofit design package applies to the following gate locations only:

Yarbrough Gate CC Bills Gate Gate East of Fabens POE Gate

Please refer to SGW Designworks cover letter dated May 24, 2013 for analysis information.

D

C

B

AA

B

C

D

12345678

8 7 6 5 4 3 2 1

THE INFORMATION CONTAINED IN THIS

DRAWING IS THE SOLE PROPERTY OF

SLOAN SECURITY GROUP. ANY

REPRODUCTION IN PART OR AS A WHOLE

WITHOUT THE WRITTEN PERMISSION OF

SLOAN SECURITY GROUP IS

PROHIBITED.

DIMENSIONS ARE IN INCHES

TOLERANCES:

FRACTIONAL 1/32"

ANGULAR: MACH 1 BEND 1

TWO PLACE DECIMAL .060"

THREE PLACE DECIMAL .005"

INTERPRET GEOMETRIC

TOLERANCING PER:

MATERIAL

FINISH

Material <not specified>

DRAWN

CHECKED

ENG APPR.

MFG APPR.

Q.A.

COMMENTS:

DATENAME

SIZE

B

DWG. NO. REV

WEIGHT:SCALE: 1:8

UNLESS OTHERWISE SPECIFIED:

SHEET 4 OF 7

SLIDING GATE

DO NOT SCALE DRAWING

PROPRIETARY AND CONFIDENTIAL ASME Y14-5M-1994

SLOAN SECURITY GROUP

6851 W. Targee St. Boise, ID 83709

208-344-8379

EL PASO SECTOR

GATE RETROFIT FOR:

YARBROUGH GATE•

71 1 2 " 120"

263"

202 1 2 "

WHEEL TRUCK BRACKET

EXISTING GATE FRAME

Roller Assembly

5"

WHEE TRUCK BRACKET

TRIM WHEEL TRUCK BRACKET

TO FIT GATE FRAME TUBE

This retrofit design package applies to the following gate locations only:

Yarbrough Gate CC Bills Gate Gate East of Fabens POE Gate

Please refer to SGW Designworks cover letter dated May 24, 2013 for analysis information.

D

C

B

AA

B

C

D

12345678

8 7 6 5 4 3 2 1

THE INFORMATION CONTAINED IN THIS

DRAWING IS THE SOLE PROPERTY OF

SLOAN SECURITY GROUP. ANY

REPRODUCTION IN PART OR AS A WHOLE

WITHOUT THE WRITTEN PERMISSION OF

SLOAN SECURITY GROUP IS

PROHIBITED.

DIMENSIONS ARE IN INCHES

TOLERANCES:

FRACTIONAL 1/32"

ANGULAR: MACH 1 BEND 1

TWO PLACE DECIMAL .060"

THREE PLACE DECIMAL .005"

INTERPRET GEOMETRIC

TOLERANCING PER:

MATERIAL

FINISH

DRAWN

CHECKED

ENG APPR.

MFG APPR.

Q.A.

COMMENTS:

DATENAME

SIZE

B

DWG. NO. REV

WEIGHT:SCALE: 1:36

UNLESS OTHERWISE SPECIFIED:

SHEET 5 OF 7

SLIDING GATE

DO NOT SCALE DRAWING

PROPRIETARY AND CONFIDENTIAL ASME Y14-5M-1994

SLOAN SECURITY GROUP

6851 W. Targee St. Boise, ID 83709

208-344-8379

EL PASO SECTOR

GATE RETROFIT FOR:

YARBROUGH GATE•

210"

L

INSTALLATION OF OVERHEAD BEAM AND TRACK

1/2"

TYP 4 PLC'S

6"

DETAIL L

SCALE 1 : 24

This retrofit design package applies to the following gate locations only:

Yarbrough Gate CC Bills Gate Gate East of Fabens POE Gate

Please refer to SGW Designworks cover letter dated May 24, 2013 for analysis information.

D

C

B

AA

B

C

D

12345678

8 7 6 5 4 3 2 1

THE INFORMATION CONTAINED IN THIS

DRAWING IS THE SOLE PROPERTY OF

SLOAN SECURITY GROUP. ANY

REPRODUCTION IN PART OR AS A WHOLE

WITHOUT THE WRITTEN PERMISSION OF

SLOAN SECURITY GROUP IS

PROHIBITED.

DIMENSIONS ARE IN INCHES

TOLERANCES:

FRACTIONAL 1/32"

ANGULAR: MACH 1 BEND 1

TWO PLACE DECIMAL .060"

THREE PLACE DECIMAL .005"

INTERPRET GEOMETRIC

TOLERANCING PER:

MATERIAL

FINISH

DRAWN

CHECKED

ENG APPR.

MFG APPR.

Q.A.

COMMENTS:

DATENAME

SIZE

B

DWG. NO. REV

WEIGHT:SCALE: 1:48

UNLESS OTHERWISE SPECIFIED:

SHEET 6 OF 7

SLIDING GATE

DO NOT SCALE DRAWING

PROPRIETARY AND CONFIDENTIAL ASME Y14-5M-1994

SLOAN SECURITY GROUP

6851 W. Targee St. Boise, ID 83709

208-344-8379

EL PASO SECTOR

GATE RETROFIT FOR:

YARBROUGH GATE•

114"

36"

WHEEL TRUCK LOCATION

WITH GATE OPEN

This retrofit design package applies to the following gate locations only:

Yarbrough Gate CC Bills Gate Gate East of Fabens POE Gate

Please refer to SGW Designworks cover letter dated May 24, 2013 for analysis information.

D

C

B

AA

B

C

D

12345678

8 7 6 5 4 3 2 1

THE INFORMATION CONTAINED IN THIS

DRAWING IS THE SOLE PROPERTY OF

SLOAN SECURITY GROUP. ANY

REPRODUCTION IN PART OR AS A WHOLE

WITHOUT THE WRITTEN PERMISSION OF

SLOAN SECURITY GROUP IS

PROHIBITED.

DIMENSIONS ARE IN INCHES

TOLERANCES:

FRACTIONAL 1/32"

ANGULAR: MACH 1 BEND 1

TWO PLACE DECIMAL .060"

THREE PLACE DECIMAL .005"

INTERPRET GEOMETRIC

TOLERANCING PER:

MATERIAL

FINISH

DRAWN

CHECKED

ENG APPR.

MFG APPR.

Q.A.

COMMENTS:

DATENAME

SIZE

B

DWG. NO. REV

WEIGHT:SCALE: 1:36

UNLESS OTHERWISE SPECIFIED:

SHEET 7 OF 7

SLIDING GATE

DO NOT SCALE DRAWING

PROPRIETARY AND CONFIDENTIAL ASME Y14-5M-1994

SLOAN SECURITY GROUP

6851 W. Targee St. Boise, ID 83709

208-344-8379

EL PASO SECTOR

GATE RETROFIT FOR:

YARBROUGH GATE•

doc00291320130528100007
1309 - Submittal 01 - Engineering Letter & Shop Drawings
1309 - Submittal 01 Cover
Sheet1
Engineering Letter
Gate Retrofit Shop Drawings
Sheet1
Drawing View1
Detail View A (1 : 16)
Detail View B (1 : 16)
Sheet2
Drawing View5
Detail View C (1 : 16)
Detail View D (1 : 8)
Detail View E (1 : 16)
Sheet3
Drawing View13
Drawing View14
Drawing View25
Drawing View26
Detail View H (1 : 4)
Detail View J (1 : 4)
Sheet4
Drawing View15
Drawing View16
Drawing View17
Drawing View22
Drawing View23
Section View G-G
Sheet5
Drawing View18
Drawing View19
Drawing View21
Drawing View31
Drawing View32
Sheet6
Drawing View33
Drawing View34
Detail View L (1 : 24)
Sheet7
Drawing View35

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