Tag Archives: large shelter

The benefits of going to a bigger structure

What are some of the benefits of going with a bigger structure over a smaller structure?

Budget often dictates that someone needs to start small, especially when a person is just starting out as a grower with a greenhouse.
There is also the perceived notion that staying smaller means less heating cost. In itself, that is true, since heat loss is in direct proportion to surface area exposed to the outside.

As I have mentioned before, it is very important to weigh expense
against return.

A smaller air volume has less natural circulation.
Proper air circulation for plants is critical regardless of the season.
Think of a deep pond versus a shallow pond. The deep pond never has algae on the surface because of the increased movement.

Going with a taller greenhouse will automatically increase the circulation the same way.

Another point to consider with a taller greenhouse, is that there is more open space above the plants.

This open space is where moisture can go, away from the plants even before the greenhouse ventilation system does its job.

With a lower greenhouse, moisture is always in close proximity to the plants. In a taller structure, the plants will be dry much sooner.

Moist plants in a stagnant air mass are prone to disease. These plants will, as a result, produce less.

As always, be aware of the bigger picture.

MSS 38′ Wide Structure

The standard way that MSS goes both wider and higher with structure profiles is to add to the length of the steel tubing which is used. We have a total of 8 various lengths in our inventory starting with 1”x2”x11’. As the structures get taller and wider the wind and snow loads increase exponentially. This means that we will switch to larger steel and/or reduce the hoop spacing.

The largest structure we do with engineered drawings is 30’ wide which is fabricated with 1”x3”x23’ galvanized tubing. We do occasionally bring in 1”x3”x27’ tubing to make a tall 30’ wide or up to 36’ wide. In the case of what we are using as our work area, we have mounted this structure on the 2’x2’x4’ concrete blocks which weigh approximately one ton each.

Going 2’ higher allowed us also to go a little wider so that we could capture both of the overhead doors to the shop. This structure is 38’ wide and approximately 19’ at the peak. This configuration made it necessary to build the structure with 2’ hoop spacing, 3 rows of purlins (lateral spacers), cross ties and diagonal bracing.

Normally covering this size of structure with plastic is not a practical option since 56’ wide cover is required and the maximum width available is 48’. In this particular application, since the structure is only 30’ long we could use a 32’x60’ sheet installed sideways.

The end will be fabricated in a way that is both functional and to displays some of the options which our customers may want to use. We also took special care to use scaffolding for putting up such a large structure. Please call to have us help you customize your shelter solution!

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