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Calc line length block & tackle
Where can I find a formula or calculator that will calculate the length of line needed for a 6:1 block & tackle system? For example, a 70-foot tower is lying prone and needs to be raised to the vertical. The tower pick-point is at 50-feet, the vertical pick point is at 45-feet. If, Line-1 =...- tomcad
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- Replies: 2
- Forum: Gear and Pulley engineering
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110 m tanker
Gents: I've been all over the web trying to find an AutoCad drawing of an ocean fuel tanker, preferably 110 meter, but I'd take what is available. No success. All I need is an overhead (plan) view. I'm doing a presentation on oil spills containment and clean-up. If you could help out, I'd...- tomcad
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- Replies: 1
- Forum: Marine/Ocean engineering other topics
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Tetrahedra
Hi Folks: I'm trying to find a source for marine shoreline erosion control, but I'm really stuck on a specific topic. I don't know how to identify the structure I saw in use on Puget Sound last summer. It's basic shape appeared to be an open tetrahedra. The construction material was...- tomcad
- Thread
- Replies: 3
- Forum: Coastal Engineering General Discussion
