or-ef-umpqu615-2022-2-1_4711-1.7_proposed-vertical-alignment.pdf
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- Solicitation number
- 69056724B000023
About this file
The document is a Vertical Alignment Review Report for the Umpqua ERFO Repairs 2022 project (Site 4711-1.7) by the Federal Highway Administration's Western Federal Lands Highway Division. The report details the vertical alignment specifications for a road design, including precise elevation changes and grade measurements across multiple linear and parabolic elements. The alignment spans from station 200+00.00 with an initial elevation of 1537.875 feet to the end at station 204+64.71 with a final elevation of 1585.011 feet, featuring two symmetrical parabola sections and two linear elements with varying tangent grades ranging from 0.075 to 0.110. The report provides technical data such as vertical curve lengths, entrance and exit grades, and calculated parameters like middle ordinates and K-values, which are critical for road design and construction precision.
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PHYSICAL DATA
for
FEDERAL HIGHWAY ADMINISTRATION
WESTERN FEDERAL LANDS HIGHWAY DIVISION
Umpqua ERFO Repairs 2022
OR ERFO FS UMPQU 615‐2022‐2(1)
SITE 4711‐1.7
VERTICAL ALIGNMENT
Vertical Alignment Review Report Report Created: Thursday, January 30, 2025
Time: 8:41:19 AM
Project: Design IntlFt Description:
File Name: c:\pw_work_wfl\d0620287\or-ef-umpqu615-2022-2-1_-4711-1.7_ali.dgn Last Revised: 1/30/2025 08:39:15
Note: All units in this report are in feet unless specified otherwise.
Horizontal Alignment: ALI_MAIN_4711 Horizontal Description:
Horizontal Style: Alignment\Baseline
Vertical Alignment: PRO_MAIN_4711 Vertical Description:
Vertical Style: Alignment\Baseline Station Elevation
Element: Linear
START 200+00.00 1537.875
VPC 200+40.81 1540.927
Tangent Grade: 0.075 Tangent Length: 40.813
Element: Symmetrical Parabola
VPC 200+40.81 1540.927
VPI 200+90.81 1544.667
VPT 201+40.81 1550.019
Length: 100.000
Entrance Grade: 0.075 Exit Grade: 0.107 r = 100 * (g2 - g1) / L: 3.225 K = l / (g2 - g1): 31.008
Middle Ordinate: 0.403
Element: Linear
VPT 201+40.81 1550.019
VPC 203+17.04 1568.883
Tangent Grade: 0.107 Tangent Length: 176.230
Element: Symmetrical Parabola
VPC 203+17.04 1568.883
VPI 203+67.04 1574.236
VPT 204+17.04 1579.752
Page 1 of 2Vertical Alignment Review Report
1/30/2025
Horizontal Alignment: ALI_MAIN_4711 Horizontal Description:
Horizontal Style: Alignment\Baseline Length: 100.000
Entrance Grade: 0.107 Exit Grade: 0.110 r = 100 * (g2 - g1) / L: 0.329 K = l / (g2 - g1): 303.737
Middle Ordinate: 0.041
Element: Linear
VPT 204+17.04 1579.752
END 204+64.71 1585.011
Tangent Grade: 0.110 Tangent Length: 47.665
Page 2 of 2Vertical Alignment Review Report
1/30/2025
File details come from the government source that posted it. Updated .