All posts by smorny

Stakeout and point fundations

It’s crucial, that you have exact plan. Our greenhouse will stand on 18 point foundations.  I bought 9 concrete channels (diameter 30cm) and cut them in half. Concrete channels will lay on bed of gravel groats and will be filled with concrete.

All foundations were water leveled and diagonals double checked. It was one day work and another day to mix concrete and built it in channels.

Hint: it is possible to buy concrete channels 100 cm or 50 cm long. 100 cm cost 10.60€ and 50 cm is 8.78€. With little math and one hour of work I saved 62€ 🙂

 

Moving forward

Today I ordered timber for frame. Finally winter is over and we can start building our green house. A month ago, we already cut down apple trees and prepared space.

I will record all the expenses in on-line spreadsheet.

2.4.2014: Wood is planed and waiting to be impregnated with Silvanolin.

Planed wood (timber) ready to be impregnated with Silvanolin.

4.4.2014:  We dug a trench for water and electricity for the greenhouse 🙂

water_electricity_1 water_electricity_2

Greenhouse design, part 1

As I wrote in “Why”, I have my rough design idea. That idea must be developed into cost-effective design to reduce material waste, solve details and predict weak points in workflow.

I researched little about polycarbonate panels, that will be used for roof. Polycarbonate comes in different sizes and thickness. I choose 16 mm thick plates, because of insulation and load capacity (we can have a lot of snow). Width is 2100 mm and length is available in  4000, 6000 or 7000 mm.  To minimize polycarbonate waste, both sides of the roof must have total length of plate. I adjusted width of greenhouse to fit 6000 mm plates (see first screenshot, A+B=6000 mm)

Second, wood frame must be adjusted to fit 2100 mm plates. Greenhouse will have 10 cm cordon (overhang) around it. In assembly plan for polycarbonate (PC) plates is detail of 20 mm gap between plates, to fit sealing profile. So it also follows, distances between foundations will be 1.96 m, 2.12 m, 2.12 m and 1.96 m (see second screenshot).

Foundations will be simple. Drilled hole in ground will be filled with concrete and insterted profile for wood frame.