Typical Sections-1.01.pdf
PDF 403 KB Posted
- Attached to
- ITB 26-23-214657 ARRC BRIDGE 158. 7 REPLACEMENT
- Solicitation number
- ITB 26-23-214657 ARRC BRIDGE 158.7 REPLACEMENT
- Issued by
- Anchorage Municipality, Alaska
About this file
This is a standard drawing document issued by the Alaska Railroad Corporation (ARRC) establishing typical track section specifications for mainline and industry track construction. The document, designated Standard Plan X-01.01 and adopted as of January 5, 2024, with an effective date of June 1, 2026, provides detailed cross-sectional designs for single-track tangent sections, curve sections, and shoulder sections. The drawings specify precise measurements for track width, ballast depth, sub-grade slopes, embankment heights, and drainage requirements across different track configurations. Construction requirements include excavation, placement of geotextile materials, grading and shaping of selected materials in multiple types, compaction procedures with varying moisture and density controls, placement of aggregate base courses in specified gradings, installation of railroad ballast (Type 3 for mainline track or 4A for industry track), and final ballasting, surfacing, and dressing operations.
The material specifications prescribe Selected Material Type A for roadbed embankment and Type C for sub-roadbed embankment, Aggregate Base Course Grading C-1 for sub-ballast and Grading D-1 for surface course, all in accordance with referenced subsections of the construction standards. Back slopes default to 2:1 minimum unless directed otherwise by the engineer, with sub-grade transition rates established at 1 inch over 10 feet. Embankment depths vary based on construction type, with minimum 24 inches required for existing embankment reconstruction and 36 inches for new embankment construction. The document authorizes use of native excavated material if it meets material type requirements, and specifies that new embankment construction exceeding 2,000 feet in length shall include an adjacent access road per engineering instructions. All construction must comply with referenced sections of the ARRC construction standards manual.
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Brian A. Lindamood, P.E., S.E.
Chief Engineer
ADOPTION DATE:
LAST CODE AND STANDARDS REVIEW
BY: DATE:
ADOPTED AS A
STANDARD PLAN BY:
STANDARD PLAN
X-01.01
X-
.0
06/01/2026
01/05/2024BAO
MAINLINE - SINGLE TRACK
TANGENT SECTION - SINGLE TRACKA
CURVE SECTION - SINGLE TRACKB SHOULDER SECTIONC
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8' PREFERRED
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SUPER ELEVATION
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18" (CURVE >1°)
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SEE NOTE 6
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2:1 TO E.G.
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WOOD OR CONCRETE TIE, TYP.
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SEE NOTE 6
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12" MIN.
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12" MIN.
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2:1 MIN., SEE NOTE 1
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2:1 MIN., SEE NOTE 1
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NO ROAD SECTION
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ROAD SECTION SEE NOTE 8
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6/1/2026 3:35:34 PM
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AutoCAD SHX Text GENERAL NOTES: 1. BACK SLOPES OTHER THAN 2:1 SHALL BE AT THE DIRECTION OF THE ENGINEER. BACK SLOPES OTHER THAN 2:1 SHALL BE AT THE DIRECTION OF THE ENGINEER. 2. SUB-GRADE SHALL SLOPE TO PREVAILING DRAINAGE SIDE ON TANGENT TRACK AND TO THE INSIDE OF THE CURVE ON CURVED TRACK. SUB-GRADE SHALL SLOPE TO PREVAILING DRAINAGE SIDE ON TANGENT TRACK AND TO THE INSIDE OF THE CURVE ON CURVED TRACK. 3. SUB-GRADE TRANSITION RATE TO BE 1" OVER 10'-0". SUB-GRADE TRANSITION RATE TO BE 1" OVER 10'-0". 4. EXCAVATION (NATIVE MATERIAL) MAY BE USED FOR THE ROADBED EMBANKMENT IF IT MEETS REQUIREMENTS FOR SELECTED MATERIAL, TYPE A. EXCAVATION (NATIVE MATERIAL) MAY BE USED FOR THE ROADBED EMBANKMENT IF IT MEETS REQUIREMENTS FOR SELECTED MATERIAL, TYPE A. 5. EXCAVATION (NATIVE MATERIAL) MAY BE USED FOR THE SUB-ROADBED EMBANKMENT IF IT MEETS THE REQUIREMENTS FOR SELECTED MATERIAL, TYPE C. EXCAVATION (NATIVE MATERIAL) MAY BE USED FOR THE SUB-ROADBED EMBANKMENT IF IT MEETS THE REQUIREMENTS FOR SELECTED MATERIAL, TYPE C. 6. MINIMUM 24" FOR EXISTING EMBANKMENT RECONSTRUCTION. MINIMUM 36" FOR NEW EMBANKMENT CONSTRUCTION. MINIMUM 24" FOR EXISTING EMBANKMENT RECONSTRUCTION. MINIMUM 36" FOR NEW EMBANKMENT CONSTRUCTION. 7. NEW EMBANKMENT CONSTRUCTION OVER 2000' LONG SHALL INCLUDE ACCESS ROAD ADJACENT TO TRACK IN ACCORDANCE WITH ENGINEERING NEW EMBANKMENT CONSTRUCTION OVER 2000' LONG SHALL INCLUDE ACCESS ROAD ADJACENT TO TRACK IN ACCORDANCE WITH ENGINEERING INSTRUCTIONS. 8. ROAD SECTION MAY BE CONSTRUCTED ON THE LEFT OR RIGHT SIDE OF EMBANKMENT AT THE DIRECTION OF THE ENGINEER. ROAD SECTION MAY BE CONSTRUCTED ON THE LEFT OR RIGHT SIDE OF EMBANKMENT AT THE DIRECTION OF THE ENGINEER. MATERIALS: : - SUB-ROADBED EMBANKMENT: SELECTED MATERIAL, TYPE C IN ACCORDANCE WITH SUBSECTION 703-2.07. SUB-ROADBED EMBANKMENT: SELECTED MATERIAL, TYPE C IN ACCORDANCE WITH SUBSECTION 703-2.07. - ROADBED EMBANKMENT: SELECTED MATERIAL, TYPE A IN ACCORDANCE WITH SUBSECTION 703-2.07. ROADBED EMBANKMENT: SELECTED MATERIAL, TYPE A IN ACCORDANCE WITH SUBSECTION 703-2.07. - SUB-BALLAST: AGGREGATE BASE COURSE, GRADING C-1 IN ACCORDANCE WITH SUBSECTION 703-2.03. SUB-BALLAST: AGGREGATE BASE COURSE, GRADING C-1 IN ACCORDANCE WITH SUBSECTION 703-2.03. - SURFACE COURSE: AGGREGATE BASE COURSE, GRADING D-1 IN ACCORDANCE WITH SUBSECTION 703-2.13. SURFACE COURSE: AGGREGATE BASE COURSE, GRADING D-1 IN ACCORDANCE WITH SUBSECTION 703-2.13. - BALLAST: TYPE 3 (FOR MAIN LINE TRACK) OR 4A (FOR INDUSTRY TRACK) IN ACCORDANCE WITH SUBSECTION 703-2.17. BALLAST: TYPE 3 (FOR MAIN LINE TRACK) OR 4A (FOR INDUSTRY TRACK) IN ACCORDANCE WITH SUBSECTION 703-2.17. CONSTRUCTION: : - EXCAVATE, AS REQUIRED, IN ACCORDANCE WITH SECTION 203. EXCAVATE, AS REQUIRED, IN ACCORDANCE WITH SECTION 203. - PLACE GEOTEXTILE MATERIAL IN ACCORDANCE WITH SECTION 630. PLACE GEOTEXTILE MATERIAL IN ACCORDANCE WITH SECTION 630. - PLACE, GRADE, AND SHAPE SELECTED MATERIALS, TYPES A AND C, IN ACCORDANCE WITH SUBSECTION 203-3.03. PLACE, GRADE, AND SHAPE SELECTED MATERIALS, TYPES A AND C, IN ACCORDANCE WITH SUBSECTION 203-3.03. - COMPACT SELECTED MATERIAL, TYPE A IN ACCORDANCE WITH SUBSECTION 203-3.04 "COMPACTION WITH MOISTURE AND DENSITY CONTROL". COMPACT SELECTED MATERIAL, TYPE A IN ACCORDANCE WITH SUBSECTION 203-3.04 "COMPACTION WITH MOISTURE AND DENSITY CONTROL". - COMPACT SELECTED MATERIAL, TYPE C IN ACCORDANCE WITH SUBSECTION 203-3.05 "COMPACTION WITHOUT MOISTURE AND DENSITY CONTROL". COMPACT SELECTED MATERIAL, TYPE C IN ACCORDANCE WITH SUBSECTION 203-3.05 "COMPACTION WITHOUT MOISTURE AND DENSITY CONTROL". - PLACE AND GRADE AGGREGATE BASE COURSES IN ACCORDANCE WITH SUBSECTION 301-3.01. PLACE AND GRADE AGGREGATE BASE COURSES IN ACCORDANCE WITH SUBSECTION 301-3.01. - SHAPE AND COMPACT AGGREGATE BASE COURSES IN ACCORDANCE WITH SUBSECTION 301-3.03 "SHAPING AND COMPACTION". SHAPE AND COMPACT AGGREGATE BASE COURSES IN ACCORDANCE WITH SUBSECTION 301-3.03 "SHAPING AND COMPACTION". - PLACE RAILROAD BALLAST OF THE TYPE INDICATED ON THE PLANS IN ACCORDANCE WITH SUBSECTION 309-2.01. PLACE RAILROAD BALLAST OF THE TYPE INDICATED ON THE PLANS IN ACCORDANCE WITH SUBSECTION 309-2.01. - UPON COMPLETION OF THE TRACK WORK; PLACE ADDITIONAL BALLAST AS NEEDED TO TAMP, SURFACE, AND DRESS BALLAST IN ACCORDANCE WITH UPON COMPLETION OF THE TRACK WORK; PLACE ADDITIONAL BALLAST AS NEEDED TO TAMP, SURFACE, AND DRESS BALLAST IN ACCORDANCE WITH SUBSECTION 309-3.02.
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