Module 6 : Bending & Flexing 
  Lecture 16 : Hinges, Flexstraw, Bellow
 
snow3
snow5
easygrowclimb2
http://t1.gstatic.com/images?q=tbn:ANd9GcTX3Bj845qyunOHGuFjGX99_EuBKL7NU3COR35TgWd9QabXoos6
Plate 21 A Corrugated Sheet 
  
22B Detail   
22C Temporary Shade
 22D Temporary Shade

(Source:http://www.google.co.in/search?hl=en&q=%27V%27+shaped+corrugated+roof+top+design&
bav=on.2,or.r_gc.r_pw.r_qf.&biw=1328&bih=574&um=1&ie=UTF8&tbm=isch&source=og&sa=N&tab=
wi&ei=mjU6UMHADMWrrAfkgoCQBg#um=1&hl=en&tbm=isch&sa=1&q=Expandable+cardboard+%2
7V%27+shelter+design&oq=Expandable+cardboard+%27V%27+shelter+design&gs_l=img.12...4160
7.43598.27.46289.7.7.0.0.0.0.0.0..0.0...0.0...1c.wp0pfc2LHM&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp
=d8680f32ecd94693&biw=1328&bih=574
; Aug. 26, 2012)

The bellow technique has helped in designing reasonably strong rooftop (plate 22A) with the advantage for folding facility. The bellow technique has the required elasticity for bending based on joining between two rigid members (plate 21A&B). The structure can withstand rain and snow. With proper anchoring (plate 20) the roof can stand to take load on the top (plate 22C). The Easy Grow manages wind loads equal to or greater than 70 mph. With our unique v-shape roof, snow has nowhere to go but down. Coupled with a steep roof slope snow loads reach only 6 inches of accumulation before shedding and sliding to the ground.

Exercise #01: Using bellow paradigm design and build a scaled model of a temporary green house.