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Crow Haven Observatory - a small nested ROR design

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#1 Crow Haven

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Posted 13 July 2009 - 05:20 PM

Site Preparation
The site is on a hill, on our 1.5 acre property, and has finally been prepared. A road up through the forest and the site pad had to be tractored and part of the hillside cut back. We had to wait for the weather to quit raining (in coastal Oregon it rains a lot!) before doing much more. The Winsor concrete block tiered retaining wall is completed for this year, more may be added later on.

The observatory plans follow with pictures -- a ROR design my husband created with one portion fitting and rolling back under/into the other. No supports outside the building needed. With high winds and rain here the design must keep out leaks/wicking. This is a small compact observatory for a metal pier supported by a concrete slab and isolated pier support. There will be a warm room and the observatory room will have a raised floor isolated from the pier. It will house a 6" refractor and at times, other telescopes. For now a CG-5A mount will be used, later a heavier mount may be installed.

The site photos.....

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#2 Crow Haven

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Posted 13 July 2009 - 05:22 PM

The site pad...

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#3 Crow Haven

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Posted 13 July 2009 - 05:23 PM

More work...

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#4 Crow Haven

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Posted 13 July 2009 - 05:25 PM

Retaining wall work...

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#5 Crow Haven

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Posted 13 July 2009 - 05:27 PM

Another Brick In The Wall....

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#6 Crow Haven

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Posted 13 July 2009 - 05:28 PM

My husband, Paul, and the Wall...

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#7 Crow Haven

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Posted 13 July 2009 - 05:31 PM

Foundation started...

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#8 Crow Haven

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Posted 13 July 2009 - 05:36 PM

Foundation form from above the wall...
(see plans to follow for size/details)

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#9 Crow Haven

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Posted 13 July 2009 - 05:38 PM

Floor Plan...

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#10 csa/montana

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Posted 13 July 2009 - 05:39 PM

What a beautiful retaining wall! :bow: Wonderful pictures, and such a beautiful site.

We will be most anxious to follow your Observatory rising! Thanks for sharing your dream with us!

#11 Crow Haven

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Posted 13 July 2009 - 05:40 PM

Foundation plan...

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#12 Crow Haven

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Posted 13 July 2009 - 05:42 PM

Thanks so much Carol! :jump: We're really excited to get things under way at last.

Here's the Framing plan...

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#13 Crow Haven

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Posted 13 July 2009 - 05:43 PM

Nested Roof Plan...

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#14 Crow Haven

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Posted 13 July 2009 - 05:45 PM

Electrical Plan....

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#15 Crow Haven

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Posted 13 July 2009 - 05:47 PM

Small end view...

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#16 Crow Haven

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Posted 13 July 2009 - 05:52 PM

Today the pier support was sunk into the ground and prepared for concrete. Rebar does not touch the ground inside the tube, and neoprene separates the concrete support from what will be the poured slab isolating it all around. Here's the PVC pipe...

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#17 Crow Haven

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Posted 13 July 2009 - 05:55 PM

In the ground...
Tomorrow or the next day the concrete truck arrives for the slab/pier support pour and then I'll continue with more progress. :grin:

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#18 Crow Haven

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Posted 13 July 2009 - 05:57 PM

An evening view from our property...

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#19 RobertED

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Posted 13 July 2009 - 06:47 PM

WOW!! The wall alone is gorgeous!! Can't wait to see the actual observatory!!! Good Luck with the project!! :jump:

#20 csa/montana

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Posted 13 July 2009 - 07:44 PM

What a nice set of plans! Beautiful views of the sky! We are so excited for you, as each of us remember the excitement & thrill when our Observatories were started.

Looking forward to taking this journey with you!

#21 Crow Haven

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Posted 13 July 2009 - 11:55 PM

:grin: Thank you! The walls used 16 pallets of winsor blocks. Each block weighs 30 lbs. and the cost here is $1.58 per block. The lower wall is 75'long x 4'high, the upper wall is 61'long x 3'4" high. That's a lot of blocks! :tonofbricks:

#22 Crow Haven

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Posted 14 July 2009 - 12:01 AM

:grin: Thanks, Carol! It's fun to be able to share the adventure with everyone. Every observatory design is unique as is every site. Maybe these plans and ideas may help others in creating their own designs. :jump:

Here's the foundation as it progressed later today. More reinforcements around the forms have to be done before the pouring of the slab (perhaps tomorrow it will get done).

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#23 Crow Haven

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Posted 14 July 2009 - 12:03 AM

Another angle view...and our goats had to get in on it too. :lol:

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#24 Crow Haven

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Posted 14 July 2009 - 12:14 AM

A quick diagram of the pier support. The soil here is hardpan/clay/sandstone and very stable. It requires a pick axe to dig through it's so hard. The PVC pipe only goes into the ground about a ft. The 1/2" thick rubber lining is a synthetic, sort of like neoprene but much tougher. The 4" rubber skirt on the inside bottom edge prevents the concrete from making contact with the bottom of the PVC pipe. A temporary cardboard liner was used to protect the rubber liner while the concrete was added. There's a 1/2" rebar cage inside the pier support 4" from the bottom and 4" from the top - nowhere in contact with the dirt or pipe.
Approx. 1100 lbs. of concrete was used.

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#25 Luigi

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Posted 14 July 2009 - 07:04 AM

How about covering the wall with ivy so it doesn't heat up during the day?






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