- Joined
- Nov 10, 2008
- Messages
- 7,945
- Reaction score
- 1,189
- Location
- Wigan
- Hive Type
- 14x12
- Number of Hives
- 6
Why would you want a big stone on top of a roof that wont be able to be sucked off? Grins.
I use bricks as an immediate status indicator. And the record card on the CB for more detailed info.
But that is how I work and I know some love their highly complex systems. LOL
PH
In a similar vein, I have a large folding umbrella !
When folded, it is then covered by a woven but wind proof plastic cover , although it's a snug fit ,plus the height being 5 times the width, strong gales have blown the thing off occasionally.
High winds passing over and around an object have to increase in speed in order to catch up with the main air flow, this causes a drop in pressure above the object, the result being lift !
A light-weight hive roof can soon become a box kite , mere depth of the sides is no insurance against its' being dislodged .
John Wilkinson