Re: telescopes on concrete roof

JRS: In article <3f01d8fb.10461204@news.freeuk.net>, seen in
news:uk.sci.astronomy, Maurice Gavin <m.gavin@freeuk.com> posted at Tue,
1 Jul 2003 18:54:53 :-
>We need some practical advise re mounting telescopes on a large flat
>roof [immediately overlooking fields to the E/S/W] to minimises
>potential vibration mainly from dozens of observers walking about.

> ...

Presumably you should protect the existing roofing from any routine
contact with observers' footwear; and, if it is like roofs I've seen,
/vice versa/.

Also you should spread the load for any equipment, perhaps by laying
paving stones under each leg.

Remember wind loading on anything permanently-placed.

If you can locate a generous supply of close-boarded pallets, you might
be able to floor the roof relatively rapidly.

Think also about site security.

--
© John Stockton, Surrey, UK. ?@merlyn.demon.co.uk Turnpike v4.00 MIME. ©
Web <URL:http://www.merlyn.demon.co.uk/> - FAQqish topics, acronyms & links;
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	#1
Dr John Stockton	Re: telescopes on concrete roof JRS: In article <3f01d8fb.10461204@news.freeuk.net>, seen in news:uk.sci.astronomy, Maurice Gavin <m.gavin@freeuk.com> posted at Tue, 1 Jul 2003 18:54:53 :- >We need some practical advise re mounting telescopes on a large flat >roof [immediately overlooking fields to the E/S/W] to minimises >potential vibration mainly from dozens of observers walking about. > ... Presumably you should protect the existing roofing from any routine contact with observers' footwear; and, if it is like roofs I've seen, /vice versa/. Also you should spread the load for any equipment, perhaps by laying paving stones under each leg. Remember wind loading on anything permanently-placed. If you can locate a generous supply of close-boarded pallets, you might be able to floor the roof relatively rapidly. Think also about site security. -- © John Stockton, Surrey, UK. ?@merlyn.demon.co.uk Turnpike v4.00 MIME. © Web <URL:http://www.merlyn.demon.co.uk/> - FAQqish topics, acronyms & links; some Astro stuff via astro.htm, gravity0.htm; quotes.htm; pascal.htm; &c, &c. No Encoding. Quotes before replies. Snip well. Write clearly. Don't Mail News.