⚡ Electrical Utility Reference

POLES · CONDUCTORS · CLEARANCES · NESC · NRECA LAYERS · SYMBOLS · SCHEDULES
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Utility Drafting Reference
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⚡ Interactive Utility Tools

Build a pole loading schedule row by row. Fill in the fields and click Add Row. Export as CSV to paste into AutoCAD via DATALINK.

Pole #
Height (ft)
Class
Setting Depth (ft-in)
Species / Treatment
Guying
Primary Voltage
Construction Type
Status
Notes
POLE LOADING SCHEDULE
#Pole #HeightClassSetting Depth Species / Treat.GuyingVoltageTypeStatusNotes
No rows yet — fill in the fields above and click Add Row

Export CSV → save as .csv → link to AutoCAD via DATALINK for live schedule in your drawing.

Calculate minimum vertical clearances per NESC (National Electrical Safety Code) Table 232-1. Values shown are minimums — always verify against the current NESC edition and local utility standards.

Line Voltage (kV)
Crossing / Location Type
Conductor Type

Type Name / Code Size (kcmil / AWG) Stranding Overall Dia (in) Weight (lb/1000ft) RDC 25°C (Ω/mi) Ampacity (A) @75°C Rated Strength (lbf)

Guy wire and anchor sizing reference per RUS/NRECA guidelines. Use the calculator to determine guy lead distance and recommended strand size based on pole height and horizontal load.

⚙ Guy Lead Distance Calculator
Pole Height (ft)
Setting Depth (ft)
Attachment Ht from top (ft)
Lead Ratio (H:V)
Horizontal Load (lbs)
EHS Guy Strand — Rated Breaking Strength (RBS)
SizeTypeDiameter (in)Weight (lb/ft)RBS (lbs)Common Use
3/8"EHS0.3600.27311,200Light dist. tangent, service drops
7/16"EHS0.4300.37414,500Standard dist. tangent/angle
1/2"EHS0.4950.48919,800Dist. dead-end, heavy angle
9/16"EHS0.5550.62026,900Sub-transmission, heavy load
5/8"EHS0.6150.76531,000Transmission, large dead-ends
3/4"EHS0.7451.11543,700Transmission, H-frame structures
3/8"HS0.3600.27310,800Guy back — reduced capacity
7/16"HS0.4300.37414,000Span guy, storm guy
Anchor Types & Holding Capacity
Anchor TypeSoil ClassHolding Capacity (lbs)InstallationNotes
Screw Anchor — 8"Normal20,000–30,000Hydraulic driveMost common dist. anchor — RUS Class A/B soils
Screw Anchor — 10"Normal30,000–50,000Hydraulic driveHeavy load, dead-end, RUS Class C
Screw Anchor — 6"Normal12,000–18,000Hydraulic driveLight service drops
Log AnchorNormal8,000–15,000Excavate & buryOlder installations — rock/ledge areas
Rock AnchorRock20,000–80,000Drill & groutBedrock — capacity varies by grout length
Expanding AnchorNormal/Hard15,000–40,000Drive rod & expandCross-arm style — good in hard soils
Swamp AnchorWet/Soft4,000–8,000Drive/excavatePoor soils — may need doubled or back guys
Common Guy Assembly Types
AssemblyAbbreviationWhere UsedTypical StrandNotes
Down GuyDGTangent/angle poles3/8"–1/2" EHSStandard — goes from pole to anchor in ground
Head GuyHGDead-end, inline pull1/2"–5/8" EHSResists full conductor tension at dead-end
Span GuySGAcross road/obstruction3/8"–7/16" EHSHorizontal — connects adjacent pole tops
Stub GuySBGLimited lead spaceSame as DGAnchor attaches to adjacent stub pole
Push BracePBNo room for guyN/A — woodCompression member — 4"×4" or pipe
Storm GuySTGHigh wind areas7/16"–1/2" EHSOpposite direction from primary down guy
Sidewalk GuySWGUrban — over sidewalk3/8"–7/16" EHSGuy protector/marker required per NESC

Build a field staking sheet for overhead distribution work. Enter project header info, then add pole-by-pole data. Export as CSV for AutoCAD DATALINK or print as a formatted sheet for field crews.

📋 Project Header
Project Name
Job Number
Feeder / Circuit
Voltage (kV)
Engineer / Drafter
Date
➕ Add Pole to Sheet
Pole #
Height (ft)
Class
Species
Setting Depth (ft)
Span Ahead (ft)
Span Back (ft)
Pole Type
Guy Required?
Primary Conductor
Framing
Notes
📉 Conductor Sag & Clearance Calculator

Parabolic approximation for distribution spans. Select conductor, enter span and tension, and calculate mid-span sag at any temperature. Results include a NESC clearance check for common crossing types.

Fills weight and RBS automatically
From ACSR/AAC tables — loaded condition
Used to auto-calculate initial tension
Horizontal distance pole-to-pole
Use span = ruling span for single spans
Horizontal tension at initial stringing temp
Typical: 60°F (15.5°C)
Max operating temp: 167–212°F for ACSR
Height where conductor ties to insulator
Difference from attachment grade — use 0 for level
📐 Sag Profile — Mid-span Cross-section View
Blue = initial stringing condition  |  Orange = calculated temperature condition  |  Green dashed = required NESC clearance (road crossing)
🌡 Sag at Multiple Temperatures
Temperature (°F)Sag (ft)Sag (in) Clearance at Mid-span (ft)Clearance vs. Road (18 ft min)
⚖ NESC Table 232-1 Clearance Check — At Calculated Temperature
⚠ Values per NESC 2023. Always verify against current edition, state PUC rules, and your utility's construction standards. These are minimum clearances — add design margin.
Crossing / LocationNESC Min. (ft)Your Clearance (ft)StatusAttach Height Needed
📐 Formulas Used
Parabolic Sag (industry approximation for distribution spans)
Sag at initial conditions: D₀ = w × L² / (8 × H₀)
w = conductor unit weight (lb/ft)  |  L = span (ft)  |  H₀ = initial horizontal tension (lbs)
Conductor length at initial conditions: S₀ ≈ L + 8D₀² / (3L)
Length at temperature T: S_T = S₀ × (1 + α × ΔT)
α = thermal expansion coefficient  |  ACSR: 11.77×10⁻⁶/°F  |  AAC: 12.8×10⁻⁶/°F
Sag at temperature T: D_T = √(3L × (S_T − L) / 8)
This is the change-of-conductor-length method. For multi-span lines, substitute the ruling span for L in the thermal expansion step.
Sag at any point along span: y(x) = (4 × D × x × (L−x)) / L²
x = distance from attachment (0 to L)  |  D = mid-span sag  |  Max sag occurs at x = L/2
Note on ruling span: In a multi-span section, all spans share the same horizontal tension (assuming level attachments). The ruling span (RS) is the equivalent single span that produces the same tension as the multi-span section: RS = √(Σ(L³)/Σ(L)). For thermal calculations, the conductor expands based on the ruling span and redistributes tension equally across all spans. Always use the ruling span for temperature sag corrections, then use the actual span for final sag values.
🏗 Pole Loading — NESC Grade B/C, ANSI O5.1 Moment Check

Enter pole and loading data to compute transverse, longitudinal, and vertical loads. The resulting overturning moment is compared to ANSI O5.1 published fiber stress capacity for the selected pole class and species. For preliminary design only — final engineering must follow NESC, RUS Bulletin 200, and utility-specific construction standards.

🌲 Pole Properties (ANSI O5.1)
Typical: 10% of height + 2 ft
0° = tangent; 90° = dead-end equivalent
💨 Wind & Ice Loading (NESC Grade B/C)
NESC: Light=8, Medium=13, Heavy=13
NESC: Light=0, Medium=0, Heavy=0.5"
Typically same as conductor wind
⚡ Conductors & Attachments
Add each conductor/attachment. For span tensions at dead-ends or angles, enter the horizontal tension. For tangent spans, enter conductor weight only.
Conductor / Attachment Diameter (in) Attach Ht (ft from grd) Tension / Wt (lbs)  
🔧 Equipment & Hardware (Vertical Loads)
Typical dist. xfmr: 200–800 lbs
Switches, cutouts, capacitors, etc.
🏗 Pole Load Diagram
Orange arrows = transverse wind loads  |  Blue = conductor attachment points  |  Green = moment capacity at ground line
📊 Load Component Breakdown
Load ComponentDirectionForce (lbs) Arm (ft from GL)Moment (ft-lbs)
⚖ ANSI O5.1 Moment Capacity Check
⚠ Fiber stress values from ANSI O5.1-2015. Actual pole capacity varies with species, grade, treatment, age, and condition. Always apply appropriate safety factor (typically 4.0 for Grade B, 2.0 for Grade C temporary). This tool does not account for pole deterioration.
ParameterValueNotes
📐 Method — NESC Grade B Simplified Approach
Transverse Load (wind on conductors + pole)
F_T = wind_psf × d × span_avg / 12 (per conductor)
F_pole = wind_psf × D_pole_avg × L_exposed / 144 (on pole body)
Longitudinal Load (dead-end / angle)
F_L = H × sin(θ) for angle poles  |  F_L = H for dead-ends
H = conductor horizontal tension (lbs)  |  θ = line angle (degrees)
Overturning Moment at Ground Line
M = Σ (F_i × h_i) — sum of all forces × their height above ground line
ANSI O5.1 Ground Line Moment Capacity
M_allow = f × Z — fiber stress × section modulus at ground line
Z = π × c³ / 32 — c = circumference at ground line ÷ π (diameter)
Published moment capacities already include ANSI O5.1 fiber stress by species and class. Divide published value by safety factor for allowable.
🔌 NEC Conduit Fill Calculator

Select conduit type and size, then add conductors. NEC Chapter 9, Tables 4 & 5 limits: 53% for 1 wire, 31% for 2 wires, 40% for 3+ wires.

From NEC Chapter 9, Table 4
Conductors
NEC Fill Limits Reference
NEC Chapter 9, Table 1: 1 conductor = 53% max fill · 2 conductors = 31% max fill · 3+ conductors = 40% max fill. These limits apply to all conduit types. Derating for more than 3 current-carrying conductors in a raceway per NEC 310.15(C)(1).
Conduit SizeTypeTotal Area (in²)40% Fill (in²)31% Fill (in²)53% Fill (in²)
THHN/THWN Wire Areas (NEC Ch. 9, Table 5)
AWG / kcmilArea (in²)Diameter (in)Common Use
#140.00970.11115A circuits, control wiring
#120.01330.13020A circuits, general purpose
#100.02110.16430A circuits, HVAC feeders
#80.03660.21640–50A, dryers, small feeders
#60.05070.25455–65A, panel feeders
#40.08240.32470–85A, sub-panel feeders
#30.09730.35285–100A feeders
#20.11580.38495–115A, service entrance
#10.15620.446110–130A, large feeders
#1/00.18550.486125–150A, service entrance
#2/00.22230.532145–175A, main feeders
#3/00.26790.584165–200A, main feeders
#4/00.32370.642195–230A, service entrance
250 kcmil0.39700.711215–255A, large service
300 kcmil0.46080.766240–285A, large service
350 kcmil0.52420.817260–310A, large feeders
400 kcmil0.58630.864280–335A
500 kcmil0.70730.949320–380A, large feeders
600 kcmil0.86591.051355–420A
750 kcmil1.04961.156400–475A, utility primary
⚡ Voltage Drop Calculator

NEC recommends max 3% VD for branch circuits, 5% combined feeder + branch. Formula: VD = (2 × K × I × L) / CM where K=12.9 copper / 21.2 aluminum.

NEC 310.16 Ampacity Table — Copper Conductors (75°C / 90°C in Conduit, ≤3 Conductors, 30°C Ambient)
Important: Use the 75°C ampacity column for most applications — equipment terminals are typically rated at 75°C per NEC 110.14(C). The 90°C column applies only when all termination equipment is rated 90°C. Apply correction factors for ambient temperature above 30°C and adjustment factors for more than 3 current-carrying conductors.
AWG / kcmil Circular Mils Cu 60°C (A) Cu 75°C (A) Cu 90°C (A) Al 75°C (A) Al 90°C (A) Cu Ω/kft (75°C) Typical Use
Temperature Correction Factors (NEC Table 310.15(B)(1))
Ambient Temp °CAmbient Temp °F60°C Insulation75°C Insulation90°C Insulation
10501.291.201.15
16–2061–681.221.131.11
21–2570–771.141.081.05
26–3079–861.001.001.00
31–3588–950.910.940.96
36–4097–1040.820.880.91
41–45106–1130.710.820.87
46–50115–1220.580.750.82
51–55124–1310.410.670.76
56–60133–140—0.580.71
61–70142–158—0.330.58
Adjustment Factors — More Than 3 Current-Carrying Conductors (NEC 310.15(C)(1))
Conductors in ConduitAdjustment FactorExample: 20A Wire becomes...
1–3100% (no reduction)20A
4–680%16A
7–970%14A
10–2050%10A
21–3045%9A
31–4040%8A
41+35%7A
Voltage Drop Formula
Single Phase: VD (V) = (2 × K × I × L) / CM
Three Phase: VD (V) = (1.732 × K × I × L) / CM

K = 12.9 for copper, 21.2 for aluminum
I = Load current in amps
L = One-way length in feet
CM = Circular mils of conductor
VD% = (VD / System Voltage) × 100
🔋 Transformer KVA Sizing Calculator

Calculate required KVA from load data, or find primary/secondary currents from a known KVA rating. Always select the next standard size up from calculated KVA.

Full load amps on secondary side
Apply if not all loads run simultaneously
Typical: 20–25% for new installations
Standard Transformer KVA Ratings
Always select the next standard size above your calculated requirement. Apply demand and diversity factors where appropriate. Add 20–25% for future load growth on new installations per good engineering practice.
KVA Rating 1Φ Primary A @ 480V 1Φ Secondary A @ 240V 3Φ Primary A @ 480V 3Φ Secondary A @ 208V Typical Application
Transformer Formulas
KVA Calculations
Single Phase: kVA = (V × I) / 1000
Three Phase: kVA = (V × I × √3) / 1000 = (V × I × 1.7321) / 1000

Primary Current (1Φ): Ipri = (kVA × 1000) / Vpri
Primary Current (3Φ): Ipri = (kVA × 1000) / (Vpri × 1.7321)

From kW with Power Factor: kVA = kW / PF
Turns Ratio: N = Vpri / Vsec
Current Ratio: Isec / Ipri = Vpri / Vsec
Utility Distribution Transformer Reference
TypeVoltage ClassTypical KVA RangeMountingCommon Use
Single-Phase Overhead5kV–35kV primary5–167 kVAPole-mountedResidential, small commercial
Three-Phase Overhead5kV–35kV primary45–500 kVAPole bank or platformCommercial, small industrial
Padmount (1Φ)5kV–35kV primary10–167 kVAGround padResidential URD, subdivisions
Padmount (3Φ)5kV–35kV primary75–2500 kVAGround padCommercial, industrial, campus
Substation (3Φ)35kV–345kV primary1–50 MVASubstationDistribution substation T&D
Dry-Type (1Φ/3Φ)600V primary1–1000 kVAIndoor panel/wallBuilding feeders, switchgear

Pole Classes & Heights — ANSI O5.1

Wood pole dimensions are standardized by ANSI O5.1. Class is determined by the minimum circumference at 6 feet from the butt — a lower class number means a stronger, larger-diameter pole. Height is measured from tip to butt. Setting depth rule of thumb: 10% of length + 2 feet.

ClassMin. Circ. @ 6ft from buttMin. Top Circ.Typical Use40ft Setting Depth45ft Setting Depth50ft Setting Depth
H655.0"27.0"Heavy transmission, large dead-ends6'-6"7'-0"7'-6"
H553.5"25.0"Transmission, large angle structures6'-6"7'-0"7'-6"
H451.0"23.0"Transmission, heavy load tangent6'-6"7'-0"7'-6"
H348.5"21.0"Sub-transmission, large dist. deadend6'-6"7'-0"7'-6"
H246.0"19.0"Dist. dead-end, angle, riser6'-6"7'-0"7'-6"
H143.5"17.0"Dist. dead-end, heavy angle6'-6"7'-0"7'-6"
141.0"27.0"Standard dist. tangent, light angle6'-0"6'-6"7'-0"
237.0"25.0"Light distribution, service spans6'-0"6'-6"7'-0"
333.5"23.0"Standard distribution tangent (most common)6'-0"6'-6"7'-0"
430.5"21.0"Light duty, short spans, service5'-6"6'-0"6'-6"
527.5"19.0"Very light duty, secondary5'-6"6'-0"6'-6"
💡 Setting depth formula: 10% of pole length + 2 feet. A 45-foot pole: (45 × 0.10) + 2 = 6.5 ft (6'-6"). Always round up. Rock/poor soil conditions require deeper setting or concrete backfill.

Common NESC Clearance Requirements

⚠️ Values below are representative NESC minimums. Always verify against the current NESC edition (2023 is current as of this writing), your state PUC requirements, and your utility's construction standards. Use the Clearance Calculator tab above for specific values.
Location4–15 kV (ft)15–50 kV (ft)50–115 kV (ft)Notes
Public road (traveled way)18.018.0 + adder20.0 + adderMeasured from highest conductor to road surface
Residential driveway12.012.0 + adder15.0 + adderVehicles unlikely to exceed 8 feet
Pedestrian-only areas10.010.0 + adder12.0 + adderSidewalk, path, no vehicle access
Railroad (non-electrified)23.023.0 + adder25.0 + adderFrom rail to conductor
Navigable waterwayVariesVariesVariesPer Army Corps of Engineers permit
Agricultural land14.514.5 + adder16.5 + adderTractors, equipment
Other land / open space12.512.5 + adder14.5 + adderGeneral land not otherwise classified
Voltage adder (per kV above 15)—+0.4"/kV+0.4"/kVAdd 0.4" per kV above 15kV baseline

NRECA / Utility Layer Standards

Layer naming for electric utility distribution work. Adapt to your firm's standards — these are widely used in cooperative and IOU distribution drawing packages.

U-POLE
Wood/steel poles — Color 2 (Yellow)
U-WIRE-PRI
Primary conductors — Color 1 (Red)
U-WIRE-SEC
Secondary conductors — Color 4 (Cyan)
U-WIRE-NEUT
Neutral conductor — Color 3 (Green)
U-EQPT-XFMR
Transformers — Color 30 (Orange)
U-EQPT-SWITCH
Switches / sectionalizers — Color 6 (Magenta)
U-EQPT-CAP
Capacitor banks — Color 9 (Lt Gray)
U-GUY
Guy wires & anchors — Color 5 (Blue)
U-ANNO
General annotations — Color 7 (White)
U-DIMS
Dimensions / span lengths — Color 2
U-WIRE-PRI-DEMO
Primary to be removed — Hidden, Color 1
U-POLE-DEMO
Poles to be removed — Color 8 (Dk Gray)
U-URD-PRIMARY
Underground primary cable — Dashed, Color 30
U-URD-SECONDARY
Underground secondary cable — Dashed, Color 4
U-STREETLIGHT
Street light poles & fixtures — Color 3
U-EASEMENT
Easement boundaries — Phantom, Color 8
U-ROW
Right-of-way lines — Center, Color 252
U-TOPO
Topography / contours — Color 40 (Brown)
U-PROP-LINE
Property lines — Color 5 (Blue)
DEFPOINTS
Auto-created by AutoCAD — never use

Common Drawing Scales — Utility Work

Drawing TypeCommon ScaleScale FactorLTSCALEUse When
Distribution Plan (urban)1" = 20'240240Dense streets, tight spacing, lots of labels
Distribution Plan (rural)1" = 50'600600Wide open spans, large service territory
Distribution Plan (standard)1" = 40'480480Mixed rural/suburban, most common utility scale
Transmission Plan1" = 100'12001200Long-distance transmission lines
Substation Plot Plan1" = 10'120120Detailed equipment layout inside substation fence
Substation Plan (large)1" = 20'240240Large substations showing full yard
Pole Detail / Standard1" = 5'6060Individual pole construction details
Profile / Cross-SectionH: 1"=100', V: 1"=20'H:1200 V:240Per axisPlan-profile sheets showing ground line and conductor sag
Underground (URD)1" = 20'240240URD trench layout, padmount placement
Single Line DiagramN/A (schematic)11One-line diagrams are not drawn to scale

One-Line Diagram Symbols

⊕
Generator
GEN
Circle with G or rotating symbol
⊙
Transformer (2-winding)
XFMR / TX
Two circles touching — primary/secondary
↕
Circuit Breaker
CB / BKR
Square or rectangle with diagonal line
⊣
Air Switch (Gang Operated)
SW / GOS
Blade symbol — open or closed position shown
⊸
Fuse / Fused Cutout
FCO / FCAV
Diagonal or X symbol — open or closed
⌁
Capacitor Bank
CAP
Two parallel lines (capacitor symbol)
⋯
Recloser
RCLS
Circle with R — automatic reclosing breaker
▽
Voltage Regulator
VR / REG
Autotransformer symbol with tap changer
⊢
Sectionalizer
SECT
Box with count — opens after recloser operates
⊗
Distribution Transformer
DT / PAD
Two-circle with kVA and voltage ratio labeled
⊡
Meter
MTR / KWH
Circle with M — metering point
↯
Surge Arrester / LA
SA / LA
Arrow pointing down to ground — lightning arrester
≡
Ground / Earth
GND
Three horizontal lines decreasing in length
⊠
Padmount Transformer
PMT
Rectangle — URD/underground distribution
⊚
Current Transformer (CT)
CT
Circle around line — measures current
⊟
Potential Transformer (PT)
PT / VT
Small transformer symbol — measures voltage

Equipment Abbreviations

OHOverhead
UG / URDUnderground / Underground Residential Distribution
XFMR / TXTransformer
PMTPadmount Transformer
CB / BKRCircuit Breaker
FCOFused Cutout
FCAVFused Cutout Automatic Valve
GOSGang-Operated Switch
RCLSRecloser
SECTSectionalizer
VR / REGVoltage Regulator
CAPCapacitor Bank
SA / LASurge Arrester / Lightning Arrester
CTCurrent Transformer
PT / VTPotential Transformer / Voltage Transformer
P.O.C.Point of Connection
P.O.S.Point of Service
ROWRight of Way
ESMTEasement
GLGround Level
BGLBelow Ground Level
AGLAbove Ground Level
MSLMean Sea Level (elevation datum)
SYPSouthern Yellow Pine (pole species)
DFDouglas Fir (pole species)
WRCWestern Red Cedar (pole species)
CCAChromated Copper Arsenate (preservative)
SCPFSpun Cast Prestressed Fiber (concrete pole)
ACSRAluminum Conductor Steel Reinforced
AACAll-Aluminum Conductor
AAACAll-Aluminum Alloy Conductor
ACSSAluminum Conductor Steel Supported
XLPECross-Linked Polyethylene (cable insulation)
EPREthylene Propylene Rubber (cable insulation)
DG / DGADown Guy / Down Guy Anchor
SWGSidewalk Guy
SPAN GUYSpan Guy Wire
EHSExtra High Strength (guy wire grade)
HSHigh Strength (guy wire grade)
NESCNational Electrical Safety Code
NRECANational Rural Electric Cooperative Association
RUSRural Utilities Service (USDA)
NERCNorth American Electric Reliability Corporation
IOUInvestor-Owned Utility
CO-OPElectric Cooperative
T&DTransmission and Distribution
P&PPlan and Profile (drawing type)
1L / SLDSingle Line Diagram
kVKilovolts
kVAKilovolt-Amperes (transformer rating)
kW / MWKilowatts / Megawatts
PFPower Factor
KVARKilovolt-Ampere Reactive (reactive power)

Utility Drawing Types — What Goes on Each Sheet

Drawing TypeAbbr.ShowsCommon ScaleLayers Used
Overhead Distribution PlanOHPole locations, conductors, equipment, guy wires, phase IDs, span lengths1"=20' to 1"=50'U-POLE, U-WIRE-PRI, U-WIRE-SEC, U-EQPT, U-GUY
Underground URD PlanUGTrench routes, conduit, padmount locations, handhole/manhole, service points1"=20'U-URD-PRIMARY, U-URD-SECONDARY, U-EQPT-XFMR
Plan & ProfileP&PBoth plan (overhead view) and profile (side view with ground line) on same sheetH:1"=100', V:1"=20'All U- layers; profile on lower half of sheet
Substation Plot PlanSSEquipment layout inside substation fence: transformers, breakers, switches, bus1"=10' to 1"=20'U-EQPT-*, U-ANNO, U-DIMS, U-ROW
Single Line DiagramSLD / 1LElectrical schematic — sources, transformers, breakers, switches, loads. Not to scale.SchematicU-ANNO, U-WIRE-PRI, U-EQPT-*
Pole DetailDETIndividual pole construction: framing, hardware, conductor attachment, dimensions1"=5' or 1"=2'U-POLE, U-EQPT, U-ANNO, U-DIMS
Staking SheetSTKField staking: pole numbers, coordinates, span lengths, construction notes for crews1"=40' to 1"=100'U-POLE, U-ANNO, U-DIMS
As-BuiltABFinal constructed condition — shows what was actually built vs. designedMatch originalAll layers; revised items on separate ASISBUILT layer

AutoCAD Settings for Utility Drawings

Template Setup (Utility Standard)
  • Units: Engineering (feet & decimal inches)
  • Precision: 0'-0.00" (2 decimal places)
  • INSUNITS: 2 (feet)
  • MEASUREMENT: 0 (imperial — acad.lin)
  • LTSCALE: 480 (for 1"=40' standard scale)
  • DIMSCALE: 480 (match LTSCALE)
  • PSLTSCALE: 1 (viewport-controlled)
  • Limits: 0,0 to 5280,3960 (1 mile × 3/4 mile)
  • Snap/Grid: Grid 10', Snap 5'
Utility Workflow Best Practices
  • Start from county/GIS base map as xref (roads, parcels, aerial)
  • Draw poles as blocks with attributes (pole #, height, class)
  • Use DATALINK to connect pole schedule to Excel
  • Use FIELD codes in title block for drawing number / date
  • Separate new vs. existing vs. demo on distinct layers
  • Lock GIS base map xref layer — never edit it
  • Phase conductors: A=Red, B=Yellow, C=Blue on labels
  • Always show north arrow, scale bar, and legend
  • Store pole blocks in a shared block library .dwg
  • Use Sheet Set Manager for multi-sheet permit packages
💡 GIS integration: Many utility companies now export GIS data as .shp or .gml files. AutoCAD Map 3D can import these directly. Without Map 3D, export GIS features as .dwg from ESRI ArcGIS / QGIS and bring in as an xref. Lock that layer and draft on top of it.