STRUCTURE DESIGN - DESIGN MANUAL - CHAPTER 4 - Preliminary Drawings

Oct 29, 2026

Upload by Himbo

Chapter 4 of the Structure Design-Design Manual specifies preparation requirements for Preliminary General Drawings. It details what to include in section, plan, location sketch, and other views, covering centerline survey and stationing, spans and bent designations, bearings, berm and grade data, existing and proposed structures, scale indications, TIP/county/identification station placement, and typical bridge section items. It also provides notes for assumed live loads, seismic design references, metric units, corrosion protection, and stream crossing hydraulic data.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages8

Reading Time20 min

AccessFree to download

4-1 Preliminary General Drawings

Section View Requirements

Plan View Requirements

Location Sketch

Other Notes and Title Block Items

Stream Crossings (Section View, Plan View, Hydraulic Data)

STRUCTURE DESIGN-DESIGN MANUAL CHAPTER 4 PRELIMINARY DRAWINGS 4-1 Preliminary General Drawings General The following general guide shall be used in the preparation of Preliminary General Drawings. See Figures 4-1 and 4-2. Section Along Centerline Survey (Bents on Section at Right Angles to Bents) • End slopes • A berm 1'-6" (450 mm) above the bottom of cap for a level berm and a minimum of 1'-6" (450 mm) for a sloped berm • Elevation of breaks in the ground line to the nearest foot (0.1 m) ± • Profile grade data • Span and bent designations (Span A, B, C, End. Bent. 1, Bent 1, 2, etc.) • Location of fixed and expansion bearings • Elevation at top of footings (if known) • Size and type of piles to be used (if known) • Begin and end stations and grade point elevations at the fill face of end bents • Substructure • Existing Structure – The existing structure should be shown and labeled in the section view. Do not indicate structure removal The horizontal and vertical scales used for plotting the profile along the centerline survey and the plan view shall be indicated by showing the station and elevations just outside the top and left margins. The horizontal and vertical scales should be the same. Plan View • Substructure (with approximate out-to-out dimensions) • Rip rap outlines • Slope protection outlines • Centerline ditch or P.I. of the vertical curve • North arrow • Skew angle as shown in Figure 1-5 (also angle of intersection with road or railroad below if angle is different from skew angle) • Identification Station ◊ For grade separations, the identification station is the intersection of STRUCTURE DESIGN-DESIGN MANUAL CHAPTER 4 PRELIMINARY DRAWINGS the centerline survey with the road or railroad, regardless of whether it is on or under the bridge. The intersection station along the-Y-line or ramp should always be shown below the identification station. ◊ For all bridges, show the distance to the nearest bent if the identification station is not at the centerline of a bent. • Span lengths and the overall length from fill face to fill face of end supports (arc lengths if on horizontal curve) • Survey Line designations (-L-, -Y-, etc.) • Destination arrows on road • Work point of each substructure unit • Approach slabs with the beginning and ending approach slab stations • Begin and end stations at the fill face of end bents • Horizontal curve data as shown on roadway plans • Existing Structure – The existing structure should be shown and labeled in the plan view. Do not indicate structure removal • Work bridges and temporary causeways, if required Long Chord Layout (where applicable) -See Section 5-1. Location Sketch • Orient the location sketch consistent with the plan view of the structure. • Survey Line designations (-L-, -Y-, etc.) • North arrow • Existing structures, roads, buildings and drainage pipes shown with dashed lines. Show existing wood lines, stream outlines, and other terrain features. Do not indicate structure removal. • Proposed structure outline • Skew angle • Bench Mark located directly above the location sketch • Destination arrows on road Other • Show the TIP number, county and identification station in the spaces over the title block. For grade separations, show both stations, with the identification station on top. • Unusual conditions or features • Typical section of the bridge showing roadway width, beam spacing, barrier rail, sidewalk, bicycle lane, etc. State whether spans are continuous or simple; composite or non-composite; rolled beam; plate STRUCTURE DESIGN-DESIGN MANUAL CHAPTER 4 PRELIMINARY DRAWINGS girder or prestressed girder; type steel; etc. Note stay-in-place forms or prestressed concrete panels if used. • Title Block-briefly describe and locate the bridge Example: GENERAL DRAWING FOR BRIDGE OVER CONE CREEK ON SR 1551 BETWEEN SR 1545 AND SR 1553 • Federal Aid Projec

FAQs

What information should be shown on section views for preliminary general drawings?

Section views should include end slopes, berm details, break elevations, profile grade data, span and bent designations, fixed and expansion bearings, top-of-footing elevations (if known), pile size/type (if known), stations and grade point elevations at fill faces, and substructure with existing structure labeled but not removed.

What elements are required in the plan view?

Plan view items include substructure with approximate out-to-out dimensions, rip rap outlines, slope protection outlines, centerline ditch or P.I. of the vertical curve, north arrow, skew angle, identification station rules, span lengths and overall length, survey line designations, destination arrows, work points, approach slab stationing, and horizontal curve data, plus existing structure labeling without indicating removal.

Which hydraulic data must be provided for stream crossings?

Hydraulic data should cover design discharge and frequency, design high water elevation, drainage area, basic discharge (Q100), and basic high water elevation. Additional overtopping flood data must be shown when provided for Federal Aid bridges and other bridges where data exists.

Oct 29, 2026

Upload by Himbo