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Christopher Vincent Program Technician Horticulture – University of Arkansas
Manipulate harvest season Improve growth Temperature Light diffusion and reduction Exclude pests Reduce diseases January 3, 2011
Crops: Berries Tomatoes Peppers Greens Flowers
Rule: purpose driven design Different designs have different impacts on inside microclimate Choose your design according to the use you intend to give it
Anchors Frame shape Frame reinforcement Skin Size Ease and cost of construction Total cost per ft 2
Screw paddle Tube Do you need cement?
Quonset (hoop) Simple Vertical wall Better ground space utilization Gothic arch Claimed to be better in snow
Purlins Parallel Connects hoops so they shift together Perpendicular Keeps hoop stable from shifting side-to-side
Truss/brace Tubing gauge gauge Square or round tubing End reinforcement
End wall strength Venting height Seal
Thickness mils (usually 4-6 mils) Many chemistries, 2 basic important properites Transmittance Diffusion Effects on plants: Basic light requirements Balance with the seasonal daylight hours Diffuse light = more efficient photosynthesis
Wiggle wire (spring wire, channel wire) Semipermanent Stable Seals Rope Easily adjustable Requires adjustment Holds plastic down, doesnt seal
Two layers of poly seal and air pump inflates the space between them. Superior insulation Higher cost Initial Maintenance
Ease Number of people required at once How much time Cost Tools and machinery Materials Labor
Greenhouse Structures What are the elements of a greenhouse structure?
LESSON ONE: INTRODUCTION TO HIGH TUNNELS High Tunnel Fruit and Vegetable Production.
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Greenhouse Structures and Systems ERT 352. A greenhouse is an area designed to grow plants. It is a controlled environment which allow optimum growth.
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Alternative Construction Construction Technology.
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The Potential of Tunnels The Potential of High Tunnels Curt R. Rom M. Elena Garcia Professor Department of Horticulture University of Arkansas.
Ledgewood Farm greenhouse construction How do I Start? to I’m Finished!
Unit: 2 The Growing Structure Lesson:#1 Greenhouse parts, structures, and Coverings.
VI. GREENHOUSE COVERINGS A. Selection - factors to consider 1. Photosynthesis –Transmission vs plant reception 2. light quality – nanometers.
Objective: Students will be able to know and understand what they need to have when choosing a greenhouse. This will be accomplished by students designing.
LESSON FOUR: HIGH TUNNEL MAINTENANCE High Tunnel Fruit and Vegetable Production.
Hobby Greenhouses and Other Growing Structures Ward Upham.
1 Building Types. 2 Building Use and Size Buildings are available in many types and sizes. Large, specialized buildings should be planned and built by.
Structural Parts Greenhouse Types Even Span: Self-supporting commercial greenhouse and is the most common type of greenhouse Ridge-and-furrow: Two or.
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Greenhouse Types. A greenhouse is an area designed to grow plants in a controlled environment which allows for optimum growth. What is a Greenhouse?
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Technical drawing tools The ruler The graduated ruler is the most common tool used for making straight lines and to measure distances. It has a bevelled.
Square Foot Gardening. It is a method of gardening where you plant your vegetables in a 1’x1’ square Advantages of Doing this: Reduced Weeding.
Does your group have what it takes to build a bridge? Bridges have been used for centuries to cross, streams, rivers and valleys to make it easier for.
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Protected Cultivation Growing plants under cover in greenhouses, cold frames, polytunnels, cloches and conservatories.
Chapter 19 Greenhouse and Other Structures. Three main purposes of greenhouse structure: To provide a controlled growing environment for plants whose.
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CE Design of Multi-Story Structures T. B. Quimby UAA School of Engineering.
FORMS, SCAFFOLDING and STAGING. FORMS It is a temporary boarding, sheating or pan used to produce the desired shape and size of concrete. Forms must.
1 Unit A: Basic Principles of Plant Science with a Focus on Field Crops Lesson 4: Understanding Leaf Anatomy and Morphology.
Hand Held Heat Sealer –Handy Packaging Machine for Multiple Purposes.
Building a Greenhouse ©2001 AgriTeach.com (103001ms) Greenhouse Materials Source: Fact Sheet University of Maryland Co-op Extension Service, David.
Hoop House Construction. Parts of the hoop house Frame Hoops Braces Plastic cover.
BUILDING CONSTRUCTION V ARCHITECTURAL FINISHING SYSTEMS.
PRESENTED BY: Al Cobb, Founder, Sips School CHAPTER 2 OF 10 Basic Design & Engineering SPONSORED BY:
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