Comments on: Greenhouse Design And Construction http://www.gardening-resources.com/greenhouse-design-and-construction/ A blog about gardening, landscaping and gardening resources Mon, 09 Jan 2012 05:37:44 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: omer http://www.gardening-resources.com/greenhouse-design-and-construction/comment-page-1/#comment-22065 omer Thu, 27 Jan 2011 18:36:41 +0000 http://www.gardening-resources.com/?p=6751#comment-22065 please recommend me a design for a greenhouse for the details as shown bellow: The structure: Plastic Polyethylene Cover Greenhouse single dimension 34x9m Heights: 3.5m – 3.7m –(maximum 4.1m) The single Greenhouse area with column 34X9m (306m2) The greenhouse must be of hot dipped galvanized steel framework. The galvanized pipes must be anti – rust (water resistance) and are connected with out welding. The pipes must be either: o Cylindrical galvanized pipes of dimeter 60mm and thickness 2mm Or o Square galvanized pipes 55mm of thickness 2mm, The greenhouse must have 13 arches The spaces between the arches must be 3m except the first and the last 2m. The long side supporter galvanized pipes must be diameter 32mm and thickness 1.5mm holding the arches together. The short side (width of the greenhouse) supporter galvanized pipes and the cross diagonal supports must be of diameter 32mm and thickness 1.5. The greenhouse must have anchors, galvanized wire, strings to hang the plants and baskets for gathering of the vegetables. The greenhouse must have fan exhaust from the one side and wet cooling pads at the other end. The greenhouse must have wind resistance for speed 150 Km per hour and can handle load up to 25Kg/m2. With ventilation windows on the side covered with anti-insect net. The doors must be sliding doors to avoid loss of cool and a double door at the an external room have more control for the greenhouse room temperature The greenhouse must have anti-insect net with frame on cooling pads on the outside and on the fan exhaust from the inside They must be an auto-shade system to control the room temperature of the greenhouse. The cover: The cover made from plastic polyethylene of thickness not less than 200 micron anti-ultraviolet radiation (7 to10) % minimum. The front elevation, end elevation made of fibre-glass of thickness 0.8mm and anti-ultraviolet radiation (10) % minimum. Foam must be uses to fill in the gaps between the structure and the plastic polyethylene cover. The cooling system: The cooling must have 2 fans (38”-50” diameters having European specification) for each greenhouse. The air flow must be (43,000m – 44,000) m3/hour. The area for the cooling pads must 18m2 (2m x 6m) and thickness of 10cm. The must a lower pool and a higher pool made form galvanized sheets of thickness 2mm. A water pump and (2 to 3) circulating fans and small upper exhaust fans must be included to each greenhouses. Control board A control board for each greenhouse to control the circulating-fans, exhaust-fans, water pump and thermostat must be provided. The connecting electrical cables (different lengths) must be of high quality. The irrigation system The main channels inside the greenhouse must be a 2” pipes equipped with a filter, fertile sand and the needed number of valves. The branches from the main channels (of length 120cm) having drip irrigation of GR (13-16) mm, the valves at the branches for the plants must be (25 to 35) cm apart. Water net work for the cooling system The pipes of 1.5” with an underground pool of 2 cubic-meters containing a valve, pressure water pump and a water controller floater. please recommend me a design for a greenhouse for the details as shown bellow:
The structure:
Plastic Polyethylene Cover
Greenhouse single dimension 34x9m Heights: 3.5m – 3.7m –(maximum 4.1m)
The single Greenhouse area with column 34X9m (306m2)
The greenhouse must be of hot dipped galvanized steel framework. The galvanized pipes must be anti – rust (water resistance) and are connected with out welding.
The pipes must be either:
o Cylindrical galvanized pipes of dimeter 60mm and thickness 2mm
Or
o Square galvanized pipes 55mm of thickness 2mm,
The greenhouse must have 13 arches
The spaces between the arches must be 3m except the first and the last 2m.
The long side supporter galvanized pipes must be diameter 32mm and thickness 1.5mm holding the arches together.
The short side (width of the greenhouse) supporter galvanized pipes and the cross diagonal supports must be of diameter 32mm and thickness 1.5.
The greenhouse must have anchors, galvanized wire, strings to hang the plants and baskets for gathering of the vegetables.
The greenhouse must have fan exhaust from the one side and wet cooling pads at the other end.
The greenhouse must have wind resistance for speed 150 Km per hour and can handle load up to 25Kg/m2. With ventilation windows on the side covered with anti-insect net.
The doors must be sliding doors to avoid loss of cool and a double door at the an external room have more control for the greenhouse room temperature
The greenhouse must have anti-insect net with frame on cooling pads on the outside and on the fan exhaust from the inside
They must be an auto-shade system to control the room temperature of the greenhouse.
The cover:
The cover made from plastic polyethylene of thickness not less than 200 micron anti-ultraviolet radiation (7 to10) % minimum. The front elevation, end elevation made of fibre-glass of thickness 0.8mm and anti-ultraviolet radiation (10) % minimum.
Foam must be uses to fill in the gaps between the structure and the plastic polyethylene cover.

The cooling system:
The cooling must have 2 fans (38”-50” diameters having European specification) for each greenhouse. The air flow must be (43,000m – 44,000) m3/hour. The area for the cooling pads must 18m2 (2m x 6m) and thickness of 10cm.
The must a lower pool and a higher pool made form galvanized sheets of thickness 2mm.
A water pump and (2 to 3) circulating fans and small upper exhaust fans must be included to each greenhouses.
Control board
A control board for each greenhouse to control the circulating-fans, exhaust-fans, water pump and thermostat must be provided. The connecting electrical cables (different lengths) must be of high quality.

The irrigation system
The main channels inside the greenhouse must be a 2” pipes equipped with a filter, fertile sand and the needed number of valves.
The branches from the main channels (of length 120cm) having drip irrigation of GR (13-16) mm, the valves at the branches for the plants must be (25 to 35) cm apart.
Water net work for the cooling system
The pipes of 1.5” with an underground pool of 2 cubic-meters containing a valve, pressure water pump and a water controller floater.

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