Large Double Arch 4.5m Multi Span Greenhouse Greenhouse stable
structure layer commercial 0.15 film greenhouse
Multispan greenhouse:
In the seasons that are not suitable for plant growth, it can
provide a growth period and increase yield. It is mostly used for
plant cultivation or seedling raising of temperature-loving
vegetables, flowers, and trees in the low temperature season. There
are many types of greenhouses, which can be divided into many types
according to different roof materials, lighting materials, shapes
and heating conditions, such as glass greenhouses, plastic
polycarbonate greenhouses; single greenhouses, multi-span
greenhouses; single roof greenhouses, double Roofing greenhouse;
heated greenhouse, unheated greenhouse, etc. The greenhouse
structure should be sealed and thermally insulated, but it should
be convenient for ventilation and cooling. Modern greenhouses have
equipment for controlling temperature, humidity, light and other
conditions, and are automatically controlled by computers to create
the best environmental conditions for plants.
Greenhouse Feature:
The greenhouse is a building that uses daylight covering materials
as all or part of the enclosure structure material and can be used
for cultivation of plants in winter or other seasons that are not
suitable for the growth of open plants.
Large-scale multi-span plastic greenhouse is a type of greenhouse
that has emerged and developed rapidly in the past decade. Compared
with glass greenhouses, it has the advantages of light weight, low
amount of skeleton materials, low shading rate of structural parts,
low cost, and long service life. Its environmental regulation
ability can basically reach the same level as glass greenhouses.
Plastic greenhouse users accept The ability is far higher than the
glass greenhouse in the world, and has become the mainstream of the
development of modern greenhouses.
Greenhouse Size:
Multispan greenhouses have different structural sizes in different
countries. But overall, the general greenhouse span is 6m~12m, the
opening is about 4m, and the eaves height is 3~4m. For multi-span
greenhouses based on natural ventilation, the maximum width of the
greenhouse should be limited to 50m, preferably about 30m, when the
side windows and ridge windows are used in combination; and the
maximum width of the greenhouse can be Expand to 60m, but it is
best to limit it to about 50m; for the length of the greenhouse,
(in terms of ease of operation) it is best to limit it to less than
100m, but there is no strict requirement.
Greenhouse Main Structure:
The main structure of the plastic greenhouse generally uses hot-dip
galvanized steel pipe as the main load-bearing structure, factory
production, and on-site installation. Due to the light weight of
the plastic greenhouse and its weak resistance to wind and snow
loads, the stability of the overall structure must be fully
considered. Generally, vertical diagonal braces should be installed
in the second span or second compartment of the indoor. Necessary
space support should also be considered on the outer envelope and
roof. It is best to have diagonal supports (inclined rods) anchored
to the foundation to form a spatial force system.
Double Arch For Multispan Greenhouse:
The main structure of the plastic greenhouse must have at least 8
levels of wind resistance, and generally require up to 10 levels of
wind resistance. With double arch large pillar, it can resist at
least level 12 wind.
Greenhouse Other Capacity:
The snow load carrying capacity of the main structure should be
determined according to the actual snow conditions in the
construction area and the winter use of the greenhouse. For use in
the north, the designed snow load should not be less than
0.35kN/m2.
For plastic greenhouses in annual operation, multiple load factors
such as equipment weight, plant lifting weight, and maintenance
should also be considered.
Multispan Greenhouse Parameter:
Item | Specification |
Span Width | Can be customized |
| Length | 10-100m or customized |
Gutter Height | 3.5-4.5m, can be customized |
Wind load | 30mpb |
Optional system | Framework+covering+sunshade system+ cooling system+heating
system+electric control system |
