IFB_25-072-JG_Van_Meter_Transmission_Loads-Addendum_4.xlsx

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Attached to
Transmission & Substation Structures for Van Meter Substation
Solicitation number
IFB 25-072-JG
Issued by
Florida

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Written by GovTribe AI ·

This is Addendum 4 to an Invitation for Bid (IFB 25-072-JG) issued by Kissimmee Utility Authority (KUA) in Florida for transmission and substation structures for the Van Meter Substation. The addendum provides comprehensive load tables specifying design loads for eight distinct structure types, including detailed wind speed parameters (ranging from 30.0 to 131.1 MPH), ice thickness, temperature conditions, and load factors for vertical, wind, and wire applications. The load cases encompass NESC standards (250B, 250C, and 250D), KUA extreme wind conditions, stringing deadend scenarios, and deflection analyses. Each load case table presents specific force values measured in kips (K) across multiple load points and directions (vertical, tangential, and lateral components), with wind pressures ranging from 0.0 to 44.0 PSF. The specifications establish the technical foundation for bidders to design and manufacture the required 15 structures (8 tubular steel transmission structures and 7 substation steel structures), with a proposal due date of October 7, 2025, and a targeted delivery date of July 1, 2026.

The load tables in this addendum serve as essential engineering specifications that bidders must use to ensure their structural designs meet KUA's precise technical requirements for transmission and substation infrastructure. The load data accounts for various environmental conditions and operational scenarios, including extreme wind events specific to the KUA service area, ice loading conditions, and temperature variations from 15°F to 60°F. Bidders are required to design structures capable of safely handling these specified loads with appropriate safety factors, as indicated by the load factor multipliers (ranging from 1.0 to 2.50) incorporated into the design criteria. This addendum clarifies critical technical parameters that form the basis for firm-fixed unit pricing submissions, ensuring that all bidders have consistent, standardized load assumptions for their cost estimates and technical proposals.

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1 (43B) LOAD TABLE

LOAD CASESWIND
(MPH)WIND
(PSF)STRUCTURE

WIND

(MPH) STRUCTURE

WIND

(PSF)ΘICE
(IN)TEMP
(°F)I/C/LVERTICAL

LOAD

FACTOR WIND

LOAD

FACTOR WIRE

LOAD

FACTORVSA1
(K)TSA1
(K)LSA1
(K)VSB
(K)TSB
(K)LSB
(K)VSA2
(K)TSA2
(K)LSA2
(K)VPA1
(K)TPA1
(K)LPA1
(K)VPB
(K)TPB
(K)LPB
(K)VPA2
(K)TPA2
(K)LPA2
(K)W
(PSF)K
NESC 250B59.39.059.39.090.00.030.0I1.502.501.651.173.65-2.890.90-0.48-0.470.792.15-10.281.578.09-6.421.07-0.35-0.461.572.39-9.7222.51.5
NESC 250C120.036.9120.036.990.00.060.0I1.001.001.000.783.55-2.740.60-0.74-0.730.531.97-7.931.056.92-5.340.71-0.45-0.651.052.87-9.9136.91.0
NESC 250D30.02.330.02.390.00.015.0I1.001.001.000.782.28-1.850.60-0.25-0.210.531.13-6.311.054.89-3.970.71-0.27-0.231.051.02-5.462.31.0
KUA EXTREME WIND131.144.0131.144.090.00.060.0I1.001.001.000.783.98-3.060.60-0.87-0.860.532.20-8.561.057.58-5.820.71-0.52-0.761.053.27-10.9444.01.0
STRINGING DEADEND39.54.039.54.090.00.060.0I1.501.001.002.001.46-1.171.04-0.23-0.203.390.97-5.203.733.78-3.051.23-0.25-0.223.970.96-4.804.01.5
DEFLECTION0.00.00.00.090.00.060.0I1.001.001.000.781.39-1.130.60-0.24-0.180.530.89-5.141.053.65-2.980.71-0.27-0.211.050.81-4.640.01.0
LOAD CASESWIND
(MPH)WIND
(PSF)STRUCTURE

WIND

(MPH) STRUCTURE

WIND

(PSF)ΘICE
(IN)TEMP
(°F)I/C/LVERTICAL

LOAD

FACTOR WIND

LOAD

FACTOR WIRE

LOAD

FACTORVDA
(K)TDA
(K)LDA
(K)VDB
(K)TDB
(K)LDB
(K)VNA
(K)TNA
(K)LNA
(K)VNB
(K)TNB
(K)LNB
(K)VMA
(K)TMA
(K)LMA
(K)VCA
(K)TCA
(K)LCA
(K)VCB
(K)TCB
(K)LCB
(K)W
(PSF)K
NESC 250B59.39.059.39.090.00.030.0I1.502.501.650.813.73-3.910.78-0.47-0.461.023.93-4.120.83-0.47-0.460.780.33-0.260.831.27-1.230.81-0.48-0.4722.51.5
NESC 250C120.036.9120.036.990.00.060.0I1.001.001.000.542.81-2.830.52-0.86-0.830.682.88-2.900.55-0.86-0.830.520.60-0.490.561.48-1.380.54-0.75-0.7536.91.0
NESC 250D30.02.330.02.390.00.015.0I1.001.001.000.542.32-2.500.52-0.21-0.170.682.44-2.630.55-0.21-0.170.520.09-0.090.560.64-0.680.54-0.24-0.202.31.0
KUA EXTREME WIND131.144.0131.144.090.00.060.0I1.001.001.000.543.04-3.030.52-1.00-0.970.683.10-3.090.55-1.00-0.970.520.71-0.570.561.67-1.530.54-0.84-0.8644.01.0
STRINGING DEADEND39.54.039.54.090.00.060.0I1.501.001.002.061.79-1.920.90-0.19-0.162.371.93-2.070.95-0.19-0.160.830.10-0.091.220.57-0.590.92-0.19-0.174.01.5
DEFLECTION0.00.00.00.090.00.060.0I1.001.001.000.541.76-1.900.52-0.17-0.130.681.90-2.060.55-0.17-0.130.520.06-0.070.560.52-0.560.54-0.16-0.120.01.0

2 LOAD TABLE

LOAD CASESWIND
(MPH)WIND
(PSF)STRUCTURE

WIND

(MPH) STRUCTURE

WIND

(PSF)ΘICE
(IN)TEMP
(°F)I/C/LVERTICAL

LOAD

FACTOR WIND

LOAD

FACTOR WIRE

LOAD

FACTORVS
(K)TS
(K)LS
(K)VPA
(K)TPA
(K)LPA
(K)VPB
(K)TPB
(K)LPB
(K)VP2
(K)TP2
(K)LP2
(K)W
(PSF)K
NESC 250B59.39.059.39.090.00.030.0I1.502.501.651.743.350.001.471.93-9.462.271.979.721.973.780.0022.51.5
NESC 250C120.036.9120.036.990.00.060.0I1.001.001.001.163.160.000.982.31-8.891.512.449.911.314.520.0036.91.0
NESC 250D30.02.330.02.390.00.015.0I1.001.001.001.161.710.000.980.79-5.501.510.785.401.311.560.002.31.0
KUA EXTREME WIND131.144.0131.144.090.00.060.0I1.001.001.001.163.540.000.982.64-9.761.512.8010.941.315.170.0044.01.0
STRINGING DEADEND39.54.039.54.090.00.060.0I1.501.001.00---3.770.73-4.614.670.754.80---4.01.5
DEFLECTION0.00.00.00.090.00.060.0I1.001.001.001.161.340.000.980.58-4.481.510.614.641.311.180.000.01.0

3 LOAD TABLE

LOAD CASESWIND
(MPH)WIND
(PSF)STRUCTURE

WIND

(MPH) STRUCTURE

WIND

(PSF)ΘICE
(IN)TEMP
(°F)I/C/LVERTICAL

LOAD

FACTOR WIND

LOAD

FACTOR WIRE

LOAD

FACTORVSA
(K)TSA
(K)LSA
(K)VSB
(K)TSB
(K)LSB
(K)VP
(K)TP
(K)LP
(K)W
(PSF)K
NESC 250B59.39.059.39.090.00.030.0I1.502.501.650.981.56-10.120.941.7010.281.873.550.0022.51.5
NESC 250C120.036.9120.036.990.00.060.0I1.001.001.000.651.33-7.150.631.637.931.244.140.0036.91.0
NESC 250D30.02.330.02.390.00.015.0I1.001.001.000.650.85-6.340.630.866.311.241.530.002.31.0
KUA EXTREME WIND131.144.0131.144.090.00.060.0I1.001.001.000.651.47-7.640.631.838.561.244.710.0044.01.0
STRINGING DEADEND39.54.039.54.090.00.060.0I1.501.001.003.560.72-5.173.540.745.20---4.01.5
DEFLECTION0.00.00.00.090.00.060.0I1.001.001.000.650.67-5.130.630.675.141.241.180.000.01.0

4-6 LOAD TABLE

LOAD CASESWIND
(MPH)WIND
(PSF)STRUCTURE

WIND

(MPH) STRUCTURE

WIND

(PSF)ΘICE
(IN)TEMP
(°F)I/C/LVERTICAL

LOAD

FACTOR WIND

LOAD

FACTOR WIRE

LOAD

FACTORVS
(K)TS
(K)LS
(K)VP
(K)TP
(K)LP
(K)W
(PSF)K
NESC 250B59.39.059.39.090.00.030.0I1.502.501.651.393.190.002.663.550.0022.51.5
NESC 250C120.036.9120.036.990.00.060.0I1.001.001.000.932.760.001.784.140.0036.91.0
NESC 250D30.02.330.02.390.00.015.0I1.001.001.000.931.710.001.781.530.002.31.0
KUA EXTREME WIND131.144.0131.144.090.00.060.0I1.001.001.000.933.060.001.784.710.0044.01.0
DEFLECTION0.00.00.00.090.00.060.0I1.001.001.000.931.340.001.781.180.000.01.0

7 LOAD TABLE

LOAD CASESWIND
(MPH)WIND
(PSF)STRUCTURE

WIND

(MPH) STRUCTURE

WIND

(PSF)ΘICE
(IN)TEMP
(°F)I/C/LVERTICAL

LOAD

FACTOR WIND

LOAD

FACTOR WIRE

LOAD

FACTORVPA
(K)TPA
(K)LPA
(K)VPB
(K)TPB
(K)LPB
(K)W
(PSF)K
NESC 250B59.39.059.39.090.00.030.0I1.502.501.651.171.42-1.351.178.167.8322.51.5
NESC 250C120.036.9120.036.990.00.060.0I1.001.001.000.781.80-1.660.788.307.5836.91.0
NESC 250D30.02.330.02.390.00.015.0I1.001.001.000.780.93-0.950.784.394.482.31.0
KUA EXTREME WIND131.144.0131.144.090.00.060.0I1.001.001.000.782.09-1.920.789.228.3444.01.0
STRINGING DEADEND39.54.039.54.090.00.060.0I1.501.001.001.540.61-0.613.513.823.844.01.5
DEFLECTION0.00.00.00.090.00.060.0I1.001.001.000.780.56-0.580.783.603.720.01.0

8 LOAD TABLE

LOAD CASESWIND
(MPH)WIND
(PSF)STRUCTURE

WIND

(MPH) STRUCTURE

WIND

(PSF)ΘICE
(IN)TEMP
(°F)I/C/LVERTICAL

LOAD

FACTOR WIND

LOAD

FACTOR WIRE

LOAD

FACTORVSA
(K)TSA
(K)LSA
(K)VSB
(K)TSB
(K)LSB
(K)VPA
(K)TPA
(K)LPA
(K)VPB
(K)TPB
(K)LPB
(K)W
(PSF)K
NESC 250B59.39.059.39.090.00.030.0I1.502.501.651.921.61-1.390.799.818.532.071.42-1.261.178.097.2422.51.5
NESC 250C120.036.9120.036.990.00.060.0I1.001.001.001.281.63-1.370.537.216.031.381.80-1.560.788.016.8136.91.0
NESC 250D30.02.330.02.390.00.015.0I1.001.001.001.281.24-1.100.535.995.351.380.93-0.890.784.424.212.31.0
KUA EXTREME WIND131.144.0131.144.090.00.060.0I1.001.001.001.281.85-1.550.537.776.441.382.09-1.800.788.887.4744.01.0
STRINGING DEADEND39.54.039.54.090.00.060.0I1.501.001.002.210.55-0.493.374.914.362.440.61-0.573.483.763.534.01.5
DEFLECTION0.00.00.00.090.00.060.0I1.001.001.001.280.51-0.450.534.824.321.380.56-0.540.783.553.430.01.0

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