B08_Attachment_B-NAMA_Fabrication_Intent_Details.pdf
PDF 4 MB Posted
- Attached to
- NAMA WAYFINDING SIGNS & INSTILLATION
- Solicitation number
- 140P1326Q0028
About this file
This document is a fabrication specification guide for motorist guidance signs produced by the National Park Service's Sign Program at the Harpers Ferry Center. It provides detailed technical drawings and manufacturing standards for two primary sign types: 0.125-inch aluminum signs with wood posts and 0.080-inch aluminum signs with wood posts.
For the 0.125-inch aluminum sign specifications, panels can range up to 96 inches wide and require three posts for maximum width. Signs feature 0.125-inch aluminum panels with 3/8-inch radius corners, painted NPS Brown (Matthews Paint MP63848) on the back. Panels are mounted using 1/4-inch thick aluminum continuous "Z-Bar" mounting rails painted to match NPS Brown, with white Type III/IV high-intensity reflective vinyl applied to the aluminum panel and FHWA Recreation Brown translucent overlay film for graphics. Posts are 4x6 wood posts painted NPS Brown with breakaway or frangible coupling as required by state and local codes. Panel-to-post insets vary by sign size: 6 inches for panels 60 inches or smaller, 8 inches for 62-70 inches, 10 inches for 72-94 inches, and 12 inches for 96-inch panels. Mounting hardware includes 1/2"-13 round head square neck galvanized steel carriage bolts and 1/4"-20 stainless steel slotted machine screws with washers and hex nuts.
For the 0.080-inch aluminum sign specifications, panels are limited to 36 inches maximum width and use 4x4 wood posts with the same NPS Brown paint requirements and breakaway coupling provisions. Mounting utilizes 1/4"-20 by 5-inch galvanized steel carriage bolts. All signs must be fabricated and installed in accordance with federal and local Department of Transportation standards and specifications. The document emphasizes compliance with structural integrity requirements and state and local codes for footer engineering and post depth specifications.
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Other files
| File | Type | Posted |
|---|---|---|
| B08_Attachment_FACTS_Sheet_NAMA_Wayfinding_Signs.docx | DOCX document | |
| B08_SCA_WD_2015-4281_Rev_37-5_14_26.pdf | ||
| B08_Price_Schedule.pdf | ||
| B08_Attachment_A-NAMA_Identity_Sign_Drawings.pdf | ||
| B08_Drawings.pdf | ||
| B08_SOW_Wayfinding_Signs_Rev_2026-05-15.docx | DOCX document | |
| Sol_140P1326Q0028.pdf |
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Text version
Motorist Guidance Sign Fabrication Intent Details
National Park Service June 2022
NPS Sign Program Harpers Ferry Center
Interpretive Design Center Harpers Ferry, WV 25425
304-535-4069
Note: All motorist guidance signs and breakaway post components shall be fabricated and installed per federal and local Department of Transportation standards and specifications where applicable.
Attachment B
National Park Service | Harpers Ferry Center | Media Development | Signs
Project Number
Drawing Date Page
Description | Notes
Scale:
MG 3.0
Motorist Guidance Sign Fabrication Details
NPS_HFC_MG
June 2022 Not to Scale
0.125 Aluminum Sign with Wood Posts
National Park Service
NPS Brown Matthews Paint MP63848 PMS Black 4
4x6 Wood Posts Painted to match NPS Brown with Breakaway or Frangible Coupling
2-D3.0 Breakaway Wood Post Detail
3-D3.0 NPS Standard .125 Aluminum Sign Front and Side Elevations
18"
4"
1-1/2" x 1/2" Breakaway Slot Note: Slot goes through Entire Depth of Post
4x6 Wood Posts Painted to Match NPS Brown
Breakaway or Frangible Coupling as Required by
State and Local Codes
Footer Engineering and Depth as Required for
Structural Integrity and Per State and Local Codes
1/4" Thick Aluminum Continuous “Z-Bar” Mounting Rail, Painted to Match NPS Brown
.125 Aluminum Sign Panel with 3/8" Radius Corners, Panel Back Painted to Match NPS Brown
White, Type III/IV High Intensity Reflective Vinyl to Aluminum Panel
FHWA Recreation Brown Translucent Overlay Film with Compute-Cut or Digitally Printed Graphics
Line of T-Bar Extrusion Back Welded to Panel Every 12" O.C.
For Support
Panels 96" Wide Require Three (3) Posts
1-D3.0C
1-D3.0B
GL
D ep en d in g o n S ig h t Li n es a n d L o ca l C o n d it io n s
1-D3.0 NPS Standard .125 Aluminum Sign Fabrication
Drawing Date Page
Description | Notes
Scale:
MG 3.1
Motorist Guidance Sign Fabrication Details
NPS_HFC_MG
June 2022 As Indicated, otherwise Not to Scale
0.125 Aluminum Sign with Wood Posts
National Park Service
Varies Based on Sign Size, See Chart A
1/2"-13 Round Head, Square Neck Galvanized Steel Carriage Bolt with Flat Washer and Hex Nut (Bolt Length Based on Post Size)
4x6 Breakaway Timber Post Painted to Match NPS Brown
1/4" Thick Aluminum Continuous “Z-Bar”Mounting Rail, Paint to Match NPS Brown
2"
4" 1/4"-20 x 1" Length Large Diameter Round Head 18-8 Stainless Steel Slotted Machine Screw with Washer and Hex Nut Note: High Bond Adhesive Tape
Along Entire Length of Rail
.125 Aluminum Sign Panel with 3/8" Radius Corners, Panel Back Painted to Match NPS Brown, Matthews Paint MP63848
Panel Width
60" or smaller
62"– 70"
72"– 94"
96"
Post Inset to Panel Edge
6"
8"
10"
12"
1-D3.0B Panel-Post Attachment Detail - Top Section Scale: 3” = 1’-0”
1-D3.0A Typical .125 Aluminum Panel Details
Single Sheet, Four (4) Mounting Holes
Chart A
U p t o
8"
5" 5"
Up to 96"
4" 4" 3/8" Radius Corners (Typ)
5/16" Mounting Holes (Typ)
Panel Back Painted To Match NPS Brown (Typ)
Drawing Date Page
Description | Notes
Scale:
MG 3.2
Motorist Guidance Sign Fabrication Details
NPS_HFC_MG
June 2022 3” = 1’-0”
0.125 Aluminum Sign with Wood Posts
National Park Service
1/4" Thick Aluminum Continuous “Z-Bar” Mounting Rail, Paint to Match NPS Brown
.125 Aluminum Sign Panel with 3/8" Radius Corners, Panel Back Painted to Match NPS Brown
1" x 1" x 1/8" Thick Aluminum Continuous “T-Bar” Extrusion, Back Welded to Panel For Support
6 1/4"
5" 3 3/4"
5"
Note: Very High Bond Adhesive Tape Along Entire Length of Rail
5/16" Diameter Hole to Accept 1/4"-20 Screw
9/16" Diameter Hole to Accept
1/2"-13 Bolt
2 1/2" 2 1/2"
3"
1 1/4"1 1/4"1 1/4"1 1/4"
1"
6 1/2"
1-D3.0C Aluminum Sign Side Section
Note: Panel Back, Z-Bar Mounting Rails, and T-Bar Extrusions Painted to Match NPS Brown, Matthews Paint MP63848
2-D3.0C “Z-Bar” Mounting Rail Detail
1/2"-13 x 7 1/2" Long, Round Head, Square Neck Galvanized Steel
Carriage Bolt with Flat Washer and
Hex Nut
4x6 Breakaway Timber Post Painted to Match NPS Brown
1/4"-20 x 1" Long Large Diameter
Round Head 18-8 Stainless Steel
Slotted Machine Screw with Washer and Hex Nut
Drawing Date Page
Description | Notes
Scale:
MG 4.0
Motorist Guidance Sign Fabrication Details
NPS_HFC_MG
June 2022 Not to Scale
0.080 Aluminum Sign with Wood Posts
National Park Service
NPS Brown Matthews Paint MP63848 PMS Black 4
GL
D ep en d in g o n S ig h t Li n es a n d L o ca l C o n d it io n s
4x4 Wood Posts Painted to Match NPS Brown, Matthews Paint MP63848
Breakaway or Frangible Coupling as Required by
State and Local Codes
Footer Engineering and Depth as Required for
Structural Integrity and Per State and Local Codes
2-D4.0A
2-D4.0 NPS Standard .080 Aluminum -Sign Elevations
For Panels up to 36"
1-D4.0 NPS Standard .080 Aluminum Fabrication
For Panels Up To 36" Wide
4x4 Wood Posts Painted to match NPS Brown with Breakaway or Frangible Coupling
.080 Aluminum Sign Panel with 3/8" Radius Corners, Panel Back Painted to Match NPS Brown
White, Type III/IV High Intensity Reflective Vinyl to Aluminum Panel
FHWA Recreation Brown Translucent Overlay Film with Compute-Cut or Digitally Printed Graphics
Drawing Date Page
Description | Notes
Scale:
MG 4.1
Motorist Guidance Sign Fabrication Details
NPS_HFC_MG
June 2022 As Indicated, otherwise Not to Scale
0.080 Aluminum Sign with Wood Posts
National Park Service
2-D4.0A Panel Post Attachment Detail
Scale: 3" = 1' - 0"
3-D4.0A .080 Aluminum Panel Details
Scale: 3/4" = 1' - 0"
3" 3"
3" 3" eq eq
3/8" Radius Corners (Typ)
5/16" Mounting Holes (Typ)
.080 Aluminum Sign Panel
1/4"-20 x 5" Long Galvanized Steel
Carriage Bolt with Washer and Nut
4x4 Breakaway Timber Post Painted to Match NPS Brown
Panel Back Painted To Match NPS Brown (Typ)
Up to 36"
Untitled
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