Appendix C



Design Information for Austin, Texas

Latitude: 30.30
Longitude: 97.70

(all temperatures in degrees Fahrenheit)

JFMAMJJASONDYEAR
Avg.
Temp.
(Drybulb)
50.353.257.369.274.280.484.083.978.868.857.351.367.5
Avg.
Daily
Max.
60.764.368.679.384.690.193.493.988.880.169.062.578.0
Avg.
Daily
Min.
41.042.446.960.064.971.774.674.670.658.646.842.558.0
Deg.
Days
Heating
(Base 65)
450.5330.5251.517.54.00.00.00.00.043.0256.5411.01764.5
Deg.
Days
Cooling
(Base 75)
0.00.00.06.083.5190.5280.0286.5161.030.50.00.01038.0
Deg.
Days
Cooling
(Base 80)
0.00.00.00.028.075.5127.5146.056.09.50.00.0442.5
Max.
Temp
8384818999959910496938781104
Min.
Temp
28312446545569686143302824
No. Days max.
above
90
0000622292416400101
No. Days
Min.
below
32
41200000003313
Avg.
Temp
(Day)
5557.861.172.677.58487.687.782.873.462.055.272.7
Avg.
Temp
(Night)
47.650.254.465.970.776.480.180.275.265.154.048.963.0

Average Wind Speed (MPH)

JFMAMJJASONDYEAR
10.610.510.412.19.910.08.07.46.68.39.09.29.3

Average Relative Humidity

JFMAMJJASONDYEAR
(4AM)70.276.870.081.681.386.583.780.786.085.277.478.679.8
(10AM)60.465.058.165.164.462.961.563.968.567.361.967.663.9
(4PM)49.450.136.848.047.946.644.246.448.253.146.547.147.0
(10PM)63.172.355.371.767.569.565.765.476.976.669.265.868.2

Average Daily Total Vertical Solar Insolation (listed in BTU's per square foot per day)

Azimuth
N233.6302.2419.2520.9615.9704.5659.1523.4433.8322.8248.3217.7434.1
E566.6680.8888.1911.71008.21140.91187.41081.2914.5778.0614.4507.1857.6
S1226.81206.81183.9936.4796.1736.2763.0884.21115.31294.61281.61259.21056.2
W561.5680.1936.31023.61136.21202.41184.31076.2940.2807.1644.9586.9899.5

Maximum Daily Total Vertical Solar Insolation (listed in BTU's per square foot per day)

Azimuth
N355.2400.7516.7635.7727.2798.2735.6590.4510.0411.1354.3281.0798.2
E798.11063.51269.01368.91383.61382.41339.61294.91142.51013.7880.3745.51383.6
S1835.21811.81681.61363.2982.9815.6832.91105.01478.01728.01798.21815.21835.2
W766.81010.11281.51348.91340.91356.21307.11244.11121.81009.1888.9741.51356.2

This file last updated on

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