Today received a question about the ideal number of entrance holes (EH) in a good BH.
"Harry, how many entrance holes (EH) should my BH have?".
It is one of those tricky questions that demand lots of carefull thinking.
In general one hole is more then enought however if your BH is huge or tall with 5 to 10 stories, my answer might be wrong.
The best is to carefully look at your BH dimension, how many story high and the internal factors.
I was having a short dicussion wiht Mr.J of Sri Petaling the other day and he got a very interesting experiences that I never believed but I did.....
He was a lucky man. He got involved in abalone trade and due to his network in Indonesia, he was given the opportunity to visit one of the biggest BH in the World.
It was in central Java, in a remote area and the total size of the BH was more the 33,000 square feet. That is closed to 3/4 of an acrea (one acrea is equivalent to about 44,000 square feet). It was about five stories high.
Unbelievable but it is true ....
So how many entrance holes do you think this BH have? My frank answer " I don't know." This is because the house was so big, how the hell are we going to find and count those EH?
In KT, Trengganu the other day, I was talking to Mr.J who owned and operated two 4 stories BH on two agricultural land. He claimed that the birds tend to stay mainly on the top most floor, the second floor and the first floor. They refused to go down to the lowest floor.
What he did was to open one more hole at the 2nd floor and after a few weeks he observed that the birds started to colonised the lowest floor.
I think the lowest floor was too dark. Once the 2nd floor EH was introduced, the light must have increased the lux in the lowest floor thus making the birds to like it.
In general, the best number of EH, in a normal BH, should not be more then two holes.
The opening of too many EH will effect your BH by the followings:
a) The BH temperature will become very difficult to control. It will tend equilised with the external admospheric terperature. This is not what it should be.
b) Too many EH will also effect your BH humidity. Your humidifiers have to work extra hard to sustain the set humidity, if you use the hygrostat.
c) More EH means more light penetrating your BH. This will usually causes the BH to be too bright. For a high BH, U can open the EH at a different level but care must be taken to ensure that they are not too big a hole.
d) I forgot to add that the more you open the EH the more you are giving those buglars and prediators the opportunity to sneek in......
So be carefull and wise when you wanted to design your BH. Think carefully and apply the idea given above..........
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