SPECIFICATIONS : There are also certain rules and regulations also that need to be followed while building these houses. Since many types of greenhouses are available, one should first go through the available types, their features. Then a feasibility study should follow to decide the type of greenhouse that is suitable to be built. Obviously, the factors that should be thought over would include they materials availability, soil types and moreover the capital available.
In general following materials are and should be specified in the specifications list:
Dead load, snow load, wind load any special load etc. should be initially decided and mentioned in the greenhouse specifications.
Materials to be Used
Extrusions, Aluminum sheets, aluminum plates, their exact types and quantities should be mentioned.
Extrusions, Aluminum sheets, aluminum plates, their exact types and quantities should be mentioned. The parts that need to be mentioned are - Connections, Posts, Anchor Bolts, Rafters, Roof Purlins Trusses, Wall Sills, Condensation System, Glazing Members, and Lapped Glass, Gables and Partitions etc.
Non-load bearing screws and bolts and their required types number of items should be listed.
Fully tempered clear float glass, and polycarbonate need to be mentioned
Generally non metallic non corrosive non shrinking materials non staining materials need to be used.
Greenhouse Doors and Frames
The doors and frames materials such as glass panels, mechanical joints, hinges, lock sets, closers should be listed explicitly in greenhouse specifications
Evaporate Pad System
They can be rack and pinion or louvered inlets
Horizontal Air Flow Fans
Heating systems can have unit heaters and hot water tube heaters.
Energy / Shade Curtains
grow lights, plant watering systems
Bench Systems etc
Bench systems are further classified in stationary, rolling and floor mounted benches.
USES: The purpose of a greenhouse is to shield crops from excess cold or heat and unwanted pests. A greenhouse makes it possible to grow certain types of crops year round, and fruits, tobacco plants, vegetables, and flowers are what agreenhouse most commonly grows.
ADVANTAGES : 10-12% increase in yield depending upon the type of greenhouse, type of crop, environmental control facilities
Reliability of crop increases in green house cultivation
Expands your growing season
Expanding the variety among your produce
Minimize external threats to your crop
DISADVANTAGES : High upfront and operating expenses
Lack of pollination
Careful precautions must be taken to eliminate any pest or diseases to make sure your next crop wont be affected.