Fastener-sealing eave protection is very helpful at the eaves and the valleys. If No.30 ASTM Type ll or No.30 ASTM Type lV roofing felt is installed on the remainder of the roof with a continuous ventilation product on top of the felt and eave protection you will have a great roof. If using a Certi-LastÂ® or shake felt system product you only need the felt and eave protection. What is the CSSB recommended procedure for base or sheathing protection? No. 30 ASTM D226 Type ll or ASTM D4869 Type lV roofing felt.
Venus Earth Ratio (Venus/Earth) Semimajor axis (10 6 km) 108.21: 149.60: 0.723: Sidereal orbit period (days) 224.701: 365.256: 0.615: Tropical orbit period (days) 224.695: 365.242: 0.615: Perihelion (10 6 km) 107.48: 147.09: 0.731: Aphelion (10 6 km) 108.94: 152.10: 0.716: Synodic period (days) 583.92--Mean orbital velocity (km/s) 35.02: 29.78: 1.176: Max. orbital velocity (km/s) 35.26: 30.29: 1.164
The orbit of Venus is the most circular in the entire Solar System. In mathematical terms, the eccentricity of Venus is less than 0.01. A year on Venus lasts 223 days. As Venus travels around the Sun, it ranges in distance from 107 million km to 109 million km.The average distance is 108 million km. This is 72% the distance of Earth to the Sun. Venus can get as close as 40 million km from the Earth.This is called an inferior conjunction every 584 days, on average.n mathematical terms, the eccentricity of Venus is less than 0.01. A year on Venus lasts 223 days. As Venus travels around the Sun, it ranges in distance from 107 million km to 109 million km. The average distance is 108 million km.