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rec.gardens.orchids #13058 (1 more)
Date: Tue Feb 25 09:34:13 MST 1997
From: royko@astral.magic.ca (paul royko)
Newsgroups: rec.gardens.orchids,rec.gardens.roses
Subject: Re: How Do I build a Greenhouse using PVC Pipe ?
Organization: BertKo Communications.
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In article <330CAF9D.3CED@aea10.k12.ia.us>, Greg Bickal
<GBickal@aea10.k12.ia.us> wrote:
> I want to build a 8' wide * 16' Long Greenhouse with double layers
> of 6 Mil PVC Film. I have most of the details worked out, but Im
> double checking my ideas. This greenhouse will be TEMPORARY. To
> be put up only during the Iowa winter months October - March.
>
> 1. What should the shape be ? Quansit ? House shaped ? Dome ?
> 2. Will 1/2" PVC presure pipe be ok to build with ? or should it be
> metal tubing or wood ?
> 3. Is 2' on center close enough for the ribs ?
> 4. Is Taller Better ?
>
> Thanks anyone. Please email me directly !!!
>
> Greg
Here's some infor I downloaded a while back and kept for future reference.
[Image]
LEAFLET NO: 404
Revised 9/93 - Author Reviewed 4/96
LOW INVESTMENT PROPAGATION/WINTER PROTECTION STRUCTURE
T.E. Bilderback, R.E. Bir & M.A. Powell
Extension Horticultural Specialists
Department of Horticultural Science
North Carolina Cooperative Extension Service
North Carolina State University
Basic Structure:
Quonset Design
3' High x 6' Wide x 20' Long
3/4" schedule 40 PVC pipe bows slipped into 3/4"
electrical conduit hangers
6 ml white copolymer cover
2" x 8" treated lumber kickboards along sides and ends
List of Structural Materials and Approximate Costs (1993):
Quantity Description Cost
4 3/4" PVC pipe, 20' lengths $10.40
1 12' x 30' white copolymer film, 6 mil 12.60
32 3/4" electrical conduit hangers 6.08
1 2" x 8" x 12' treated lumber 10.96
4 2" x 8" x 10' treated lumber 36.52
1 lb 16 penny common nails 0.87
1 200 ft. roll guage steel wire 4.38
1 lb roofing nails .87
4 metal 4"x5" mending plates (4 x4.5) 1.80
Total 84.48
Tools Required for Construction:
Carpenter saw Garden rake
Carpenter hammer Side cutting pliers
Folding rule or tape measure Sharp pocket knife
Round pointed shovel Builder's square
Pencil
Site Selection: Choose a site for your structure that is fairly
level and preferably has some shade. If the structure is to be
used exclusively for propagation, it should be oriented east-
west. If its primary use will be in providing winter protection
for nursery crops, it should be oriented north-south. There
should be a water source nearby since water is needed for both
propagation and winter protection.
Construction:
1. Level an area (properly oriented depending upon
whether your structure will be used for propagation
or winter protection) 8' wide x 24' long.
2. Square ends of lumber.
3. Cut the 2" x 8" x 12' in half so that you have two
(2) pieces 2" x 8" x 6'. These 6' sections will
be used for the ends of the bed.
4. Butt the ends of two (2) of the 2" x 8" x 10's
together and nail securely so that you have a 2" x
8" x 20' using splice connectors on each side of the
splice.
5. Repeat Step 4 using the remaining two (2) 2" x 8" x
10's. The two (2) bed sides (kickboards) are now
assembled.
6. Lay kickboard sides on edge 6' apart on the levelled
area and place 2" x 8" x 6' section outside each
ugh should be bent over so that they will
not tear the copolymer cover.
8. Repeat Step 7 but with the bottom of the connector
flush with the bottom of the 2" x 8".
9. Staers as in Steps 7 and 8.
11. Cut the four (4) 20' lengths of PVC pipe in half so
that you have eight (8) 10' pieces.
12. For each section of PVC pipe, slip one end down
through a set of conduit hangers, bend follow Steps 15
and 16, then Steps 19-22.
14b. If the structure is going to be used for propagation
of cuttings follow Steps 17 and 18, then Steps
19-22.
15. Place containerized materials inside the sRodent bait should be applied just
before covering.
17. Fill the structure to a depth of 6" of 7" with
clean, moist propagating medium. Be certain that
medium is level. d at the top and attached to each bow
to add greater rigidity to the frame.
20. Center the 12' x 30' sheet of white copolymer film
over the hoop frame
21. The cover can be secured by covering the 1' of
surplus film along one of the long sides with soil.
To allow easy access to the plants or cuttings the
other three sides of the film can be held down with
boards, rocks or pieces of wood. Winter protection
structures should have kickboards braced with soil
or gravel during snow season to provide extra
support.
22. On warm days your structure may require venting.
This can be done by opening the ends and then
closing themeriods, it
is best to remove the white copolymer cover, carefully roll it up
and store it out of direct sunlight. Do not fold the cover as
the creases will cause weak areas which will tear easily when the
cover is replaced on the quonset! Storage of the cover, when not
in use, will extend the life of the white copolymer.
----------------------------------------------------------------------------
Published by
North Carolina Cooperative Extension Service
--
paul royko
Toronto, Canada
http://www.magic.ca/~royko/olddog1.html
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