PKSTLDTL10.pdf

PDF 405 KB Posted Nov 9, 2026

Attached to: Steel Structures
Solicitation number: ITB 2027-027
Issued by: Alachua County, Graceville City, Florida

About this file

Written by GovTribe AI · Nov 10, 2026

Summary

This is a technical design document for a Parker Substation Lightning Mast Load Diagram prepared by Burns & McDonald Engineering Company, Inc. for Gainesville Regional Utilities (GRU) located in Gainesville, Florida. The document details the structural design specifications and loading conditions for a 70-foot-tall lightning mast structure intended to support a 230KV electrical system. The design incorporates comprehensive load analysis including dead loads, ice loading, wind loading, and wire loads across multiple loading conditions per NESC standards (NESC Light 250B, NESC Extreme Wind 250C, and NESC Wind & Ice 250D). The structure is designed for a shield wire configuration with 3/8" HS steel overhead ground wire limited to 1,000 lbs per wire, with wind spans of 125 feet and weight spans of 250 feet. The document indicates multiple design revisions dated from July through October 2026, progressing from 90% review stages through final construction issuance.

The design utilizes LRFD (Load and Resistance Factor Design) methodology with specific loading factors and deflection limitations per ASCE 113 Class C structures. All steel components must be hot-dip galvanized per Burns & McDonald specifications, and the structure must include provisions for conductor and shield wire attachments in multiple directions (ahead, back, and transverse) to accommodate potential electrical equipment configurations. The mast requires ground provisions 1'6" above each base plate and must incorporate wind-induced vibration mitigation measures prior to conductor stringing. Anchor bolts and installation templates are specified to be provided by the steel manufacturer, with five complete elevation assemblies required for the complete substation installation.

View the file

Other files

File	Type	Posted
Steel_Structures.pdf	PDF	Nov 9, 2026
PKSTLDTL11.pdf	PDF	Nov 9, 2026
PKSTLDTL9.pdf	PDF	Nov 9, 2026
PKSTLDTL8.pdf	PDF	Nov 9, 2026
PKSTLDTL7.pdf	PDF	Nov 9, 2026
PKSTLDTL6.pdf	PDF	Nov 9, 2026
PKSTLDTL5.pdf	PDF	Nov 9, 2026
PKSTLDTL4.pdf	PDF	Nov 9, 2026
PKSTLDTL3.pdf	PDF	Nov 9, 2026
PKSTLDTL2.pdf	PDF	Nov 9, 2026
PKSTLDTL1.pdf	PDF	Nov 9, 2026
33_72_00_TND.pdf	PDF	Nov 9, 2026
33_71_16_23_TND.pdf	PDF	Nov 9, 2026

Show all 13

On GovTribe

Work with this file

Download the original file
Contacts named in this file
Similar government files
Ask GovTribe AI about this file

Try for free Login

Text version

The file's text, extracted by GovTribe without its formatting.

PARKER SUBSTATION

LIGHTNING MAST LOAD DIAGRAMREV DATE DESCRIPTION

BURNS & MCDONNELL

ENGINEERING COMPANY, INC.

9400 WARD PARKWAY

KANSAS CITY, MO 64114

CHANGES AS INDICATED BY THE FOLLOWING

SEAL ASSUMES RESPONSIBILITY FOR THE

THE REGISTRANT OF THE NEWLY APPLIED

REVISION NUMBER:0

07/17/26A ISSUED FOR 90% REVIEW

RE-ISSUED FOR 90% REVIEWB 08/28/26

C 09/21/26 ISSUED FOR CONSTRUCTION

RE-ISSUED FOR CONSTRUCTION10/29/26D

AutoCAD SHX Text

DESIGN CONDITIONS:

AutoCAD SHX Text

REFERENCE DRAWINGS:

AutoCAD SHX Text

230KV PLAN VIEW DWG.# PK230PLANDWG.# PK230PLAN

AutoCAD SHX Text SHIELD WIRE: 3/8" HS STEEL FOR OHGW PER PHASE LIMITED BY 1000 LBS - NESC 250C PER WIRE. WIND SPAN: 125' WEIGHT SPAN: 250'

AutoCAD SHX Text

NOTES:

AutoCAD SHX Text 1.50

AutoCAD SHX Text

LOADING DESCRIPTION

AutoCAD SHX Text

CONSTRUCTION

AutoCAD SHX Text

NO.

AutoCAD SHX Text 1.10

AutoCAD SHX Text 1.20

AutoCAD SHX Text 1.5

AutoCAD SHX Text

AutoCAD SHX Text 1.5

AutoCAD SHX Text 1.20

AutoCAD SHX Text 1.10

AutoCAD SHX Text 2.50

AutoCAD SHX Text 1.10

AutoCAD SHX Text 1.5

AutoCAD SHX Text

NESC LIGHT 250B

AutoCAD SHX Text

NESC EXTREME WIND 250C

AutoCAD SHX Text

NESC WIND & ICE 250D

AutoCAD SHX Text

LOADING FACTORS

AutoCAD SHX Text 1.20

AutoCAD SHX Text 1.50

AutoCAD SHX Text 1.65

AutoCAD SHX Text 1.10

AutoCAD SHX Text

AutoCAD SHX Text V

AutoCAD SHX Text

DEAD

AutoCAD SHX Text V

AutoCAD SHX Text

ICE

AutoCAD SHX Text T

AutoCAD SHX Text

WIND

AutoCAD SHX Text L

AutoCAD SHX Text

WIRE

AutoCAD SHX Text

1. LRFD DESIGN METHOD SHALL BE USED FOR THE STRUCTURE DESIGN. LRFD DESIGN METHOD SHALL BE USED FOR THE STRUCTURE DESIGN. UNFACTORED DESIGN LOADS ARE PROVIDED FOR FOUNDATION REACTIONS. DEFLECTION SHALL BE CHECKED ON DEFLECTION LOAD CASES. 2. THE WIND LOAD ON THE STRUCTURE SHALL BE APPLIED TO ALL THE WIND LOAD ON THE STRUCTURE SHALL BE APPLIED TO ALL MEMBERS WITH NO SHIELDING EFFECTS. WIND PRESSURE FOR EACH LOAD CASE SHALL BE APPLIED TO THE STRUCTURE IN THE DIRECTION WHICH YIELDS THE MOST CONSERVATIVE DESIGN. 3. W(WIRE) IS THE LOAD APPLIED TO THE WIRE AND IS SHOWN AS UNFACTORED W(WIRE) IS THE LOAD APPLIED TO THE WIRE AND IS SHOWN AS UNFACTORED IN THE LOAD TABLE. W(STR) IS THE WIND PRESSURE TO BE APPLIED TO THE STRUCTURE AND INCLUDES APPLICABLE LOAD FACTORS FOR DESIGN OF THE STRUCTURE, INCLUDING AN ASSUMED SHAPE FACTOR OF 1.0 FROM ASCE 113 TABLE 3-9. DESIGNER TO ADJUST AS REQUIRED. 4. ICE LOADING SHALL BE APPLIED TO ALL SUBSTATION EQUIPMENT, RIGID ICE LOADING SHALL BE APPLIED TO ALL SUBSTATION EQUIPMENT, RIGID BUS AND OTHER MISCELLANEOUS ITEMS ATTACHED TO THE STRUCTURE IN ACCORDANCE WITH ASCE 113 CHAPTER 3. 5. THE STRUCTURE SHALL BE DESIGNED FOR THE FOLLOWING OPTIONS FOR ALL THE STRUCTURE SHALL BE DESIGNED FOR THE FOLLOWING OPTIONS FOR ALL LOAD CASES: A. ALL SHIELD WIRES INSTALLED. ALL SHIELD WIRES INSTALLED. B. A SERVICE LOAD OF 1000 LBS CONCENTRATED ON ANY PART OF THE A SERVICE LOAD OF 1000 LBS CONCENTRATED ON ANY PART OF THE STRUCTURE. C. LOADS FOR ELECTRICAL EQUIPMENT AS SHOWN ON REFERENCED PLAN AND LOADS FOR ELECTRICAL EQUIPMENT AS SHOWN ON REFERENCED PLAN AND SECTION DRAWINGS FOR LOADING CONDITIONS SHOWN IN THE ABOVE TABLE WITH THE APPLICABLE LOAD FACTORS IN ASCE 113 TABLE 3-17. D. UPLIFT LOADS EQUIVALENT TO 100% OF VERTICAL LOADS MUST BE UPLIFT LOADS EQUIVALENT TO 100% OF VERTICAL LOADS MUST BE CONSIDERED FOR ALL LOADING CONDITIONS. E. HAVING A BROKEN CONDUCTOR ON A STRUCTURE FOR THE WORST HAVING A BROKEN CONDUCTOR ON A STRUCTURE FOR THE WORST TORSIONAL DESIGN CASE. F. ANY OTHER LOAD COMBINATION THAT CONTROLS THE STRUCTURE DESIGN ANY OTHER LOAD COMBINATION THAT CONTROLS THE STRUCTURE DESIGN INCLUDING ANY ONE OR MULTIPLE CIRCUITS INSTALLED INCLUDING ANY ONE OR MULTIPLE CIRCUITS INSTALLED G. DEAD LOAD OF THE STRUCTURE ITSELF DEAD LOAD OF THE STRUCTURE ITSELF 6. DEFLECTION SHALL BE LIMITED BY ASCE 113 CLASS "C" STRUCTURES DEFLECTION SHALL BE LIMITED BY ASCE 113 CLASS "C" STRUCTURES 7. PROVIDE PROVISIONS FOR GROUND 1'-6" ABOVE EACH BASE PLATE ON SAME PROVIDE PROVISIONS FOR GROUND 1'-6" ABOVE EACH BASE PLATE ON SAME FACE AS GROUNDING HARDWARE. 8. STRUCTURE TO BE DESIGNED TO MITIGATE WIND INDUCED VIBRATIONS PRIOR TO STRUCTURE TO BE DESIGNED TO MITIGATE WIND INDUCED VIBRATIONS PRIOR TO STRINGING. 9. ALL STEEL TO BE HOT DIP GALVANIZED PER BMCD SPEC. ALL STEEL TO BE HOT DIP GALVANIZED PER BMCD SPEC. 10. PROVIDE CONDUCTOR ATTACHMENTS IN BOTH THE AHEAD AND BACK DIRECTION. PROVIDE CONDUCTOR ATTACHMENTS IN BOTH THE AHEAD AND BACK DIRECTION. PROVIDE SHIELD WIRE ATTACHMENTS IN THE AHEAD, BACK AND TRANSVERSE DIRECTION. 11. ANCHOR BOLTS AND TEMPLATES TO BE PROVIDED BY STEEL MANUFACTURER.ANCHOR BOLTS AND TEMPLATES TO BE PROVIDED BY STEEL MANUFACTURER.

AutoCAD SHX Text

DESCRIPTION

AutoCAD SHX Text

TEMP

AutoCAD SHX Text (°F)

AutoCAD SHX Text

WIND

AutoCAD SHX Text

(MPH)

AutoCAD SHX Text

CONSTRUCTION

AutoCAD SHX Text

NO.

AutoCAD SHX Text

LIGHTNING MAST STRUCTURE

AutoCAD SHX Text

AutoCAD SHX Text 2.30

AutoCAD SHX Text 3.14

AutoCAD SHX Text

AutoCAD SHX Text 4.70

AutoCAD SHX Text 30.98

AutoCAD SHX Text 37.17

AutoCAD SHX Text W

AutoCAD SHX Text

(WIRE)

AutoCAD SHX Text

(PSF)

AutoCAD SHX Text W

AutoCAD SHX Text

(STR)

AutoCAD SHX Text

(PSF)

AutoCAD SHX Text 9.00

AutoCAD SHX Text

DESIGN LOADS

AutoCAD SHX Text

(FACTORED

AutoCAD SHX Text

LOAD IN LBS)

AutoCAD SHX Text

NESC 250B

AutoCAD SHX Text

LIGHT LOADING

AutoCAD SHX Text

NESC 250C

AutoCAD SHX Text

EXTREME WIND

AutoCAD SHX Text

NESC 250D

AutoCAD SHX Text

ICE & WIND

AutoCAD SHX Text

LOADING CONDITIONS

AutoCAD SHX Text 0.25

AutoCAD SHX Text 0.00

AutoCAD SHX Text 22.50

AutoCAD SHX Text

AutoCAD SHX Text 2.76

AutoCAD SHX Text 0.00

AutoCAD SHX Text

ICE

AutoCAD SHX Text

(IN)

AutoCAD SHX Text

DEFLECTION

AutoCAD SHX Text 13.64

AutoCAD SHX Text

AutoCAD SHX Text 13.64

AutoCAD SHX Text

AutoCAD SHX Text 0.00

AutoCAD SHX Text

EXTREME WIND

AutoCAD SHX Text

DEFLECTION

AutoCAD SHX Text 2.30

AutoCAD SHX Text

AutoCAD SHX Text 2.30

AutoCAD SHX Text

AutoCAD SHX Text 0.12

AutoCAD SHX Text

ICE & WIND

AutoCAD SHX Text

DESIGN LOADS

AutoCAD SHX Text

(UNFACTORED

AutoCAD SHX Text

LOADS IN LBS)

AutoCAD SHX Text L

AutoCAD SHX Text T

AutoCAD SHX Text V

AutoCAD SHX Text

AutoCAD SHX Text L

AutoCAD SHX Text

AutoCAD SHX Text V

AutoCAD SHX Text

AutoCAD SHX Text T

AutoCAD SHX Text

AutoCAD SHX Text 1,000

AutoCAD SHX Text

W (SEE NOTE 2)

AutoCAD SHX Text

+ L-AXIS

AutoCAD SHX Text

+ T-AXIS

AutoCAD SHX Text

DETAIL 1 SHIELD WIRE ATTACHMENT

AutoCAD SHX Text

(MAX " THK. PL.) 38" THK. PL.) NOT TO SCALE

AutoCAD SHX Text V

AutoCAD SHX Text

LOAD DIRECTION V: VERTICAL T: TRANSVERSE L: LONGITUDINAL

AutoCAD SHX Text

CONDUCTOR P: PHASE S: SHIELD

AutoCAD SHX Text

DIRECTION A: AHEAD B: BACK

AutoCAD SHX Text

NOMENCLATURE

AutoCAD SHX Text

SHIELD WIRE

AutoCAD SHX Text 30°

AutoCAD SHX Text

SHIELD WIRE

AutoCAD SHX Text

AutoCAD SHX Text 30°

AutoCAD SHX Text

AutoCAD SHX Text 30°

AutoCAD SHX Text

AutoCAD SHX Text 30°

AutoCAD SHX Text

TYP.

AutoCAD SHX Text

AutoCAD SHX Text DETAIL 2 - TYPICAL NEMA 2-HOLE PAD ( " THK. PL.) NOT TO SCALE38" THK. PL.) NOT TO SCALE

AutoCAD SHX Text 3"

AutoCAD SHX Text

R = 2" (TYP)

AutoCAD SHX Text

(3) 1½" DIA. HOLES (TYP)

AutoCAD SHX Text

EDGE OF STRUCTURE

AutoCAD SHX Text

PL "X7¼"X0'-10"58"X7¼"X0'-10"

AutoCAD SHX Text 3"

AutoCAD SHX Text

AutoCAD SHX Text 30°

AutoCAD SHX Text

AutoCAD SHX Text 30°

AutoCAD SHX Text

AutoCAD SHX Text 30°

AutoCAD SHX Text

AutoCAD SHX Text 30°

AutoCAD SHX Text

AutoCAD SHX Text L

AutoCAD SHX Text T

AutoCAD SHX Text

AutoCAD SHX Text V

AutoCAD SHX Text

AutoCAD SHX Text T

AutoCAD SHX Text

AutoCAD SHX Text V

AutoCAD SHX Text

AutoCAD SHX Text L

AutoCAD SHX Text

SHIELD WIRE

AutoCAD SHX Text

SHIELD WIRE

AutoCAD SHX Text L

AutoCAD SHX Text T

AutoCAD SHX Text V

AutoCAD SHX Text

AutoCAD SHX Text L

AutoCAD SHX Text

AutoCAD SHX Text V

AutoCAD SHX Text

AutoCAD SHX Text T

AutoCAD SHX Text

AutoCAD SHX Text 1,261

AutoCAD SHX Text

AutoCAD SHX Text 1,100

AutoCAD SHX Text

AutoCAD SHX Text 1,000

AutoCAD SHX Text

AutoCAD SHX Text 1,261

AutoCAD SHX Text

AutoCAD SHX Text 1,100

AutoCAD SHX Text

ELEVATION (5 REQ'D) SCALE: 3/16"=1'-0"

AutoCAD SHX Text

TOP OF CONCRETE

AutoCAD SHX Text

SEE DETAIL 2 (TYP)

AutoCAD SHX Text 70'-0"

AutoCAD SHX Text

SHIELD WIRE AHEAD

AutoCAD SHX Text

SHIELD WIRE AHEAD

AutoCAD SHX Text Ref. - Drawing Number:

AutoCAD SHX Text Approved by:

AutoCAD SHX Text Drafted by:

AutoCAD SHX Text Date:

AutoCAD SHX Text Drawing Number

AutoCAD SHX Text Rev.

AutoCAD SHX Text Gainesville, Florida

AutoCAD SHX Text Gainesville Regional Utilities

AutoCAD SHX Text

CADNO

AutoCAD SHX Text

DESCRIPTION

AutoCAD SHX Text

REV

AutoCAD SHX Text

DATE

AutoCAD SHX Text

PKSTLDTL10

AutoCAD SHX Text

BMCD

AutoCAD SHX Text 06/26

AutoCAD SHX Text

BMCD

AutoCAD SHX Text 06/26

AutoCAD SHX Text

PKSTLDTL10

AutoCAD SHX Text

XFMR T-75 AND BKR 740 R/P

AutoCAD SHX Text

BMCD

AutoCAD SHX Text 09/11/26

File details come from the government source that posted it. Updated Nov 10, 2026.