Kalkulator Hujan !

Assalammualaikum

Hari dah malam... semasa penulisan pada post yang lepas ..berkenaan ..daya ingatan kita ...

Saat tu ..memandangkan sekarang musim tenkujuh ..hujan siang malam.Dah 2 hari ..pekerja di site - tak kerja...reda ajelah ..dah begini keadaan alam.Jangan mengeluh ..

Tiba-tiba teringin nak tau - macam mana kira kuantiti hujan yang diterima di satu kawasan..

Macam biasa ..aku coba tanya Pak Cik 'goggle' ..nak tau coba layari web di bawah ni

http://www.lenntech.com/calculators/rain/rainfall-precipitation.htm

Sambil tu tengok U Tube ni berkenaan 'Hujan'

Berikut info macam mana kira kuantiti hujan yang di terima disesuatu kawasan.

Sumber - Internet !

Calculating Rainwater Available for Collection 

Rainwater can be captured from any impermeable surface such as a driveway, a patio or a roof. 

The amount of rainwater collected will depend on the size of the collection area. Believe it or 

not, for every inch of rain that falls on a catchment area of 1,000 square feet, you can expect to 

collect approximately 600 gallons of rainwater. Ten inches of rain falling on a 1,000 square foot 

catchment area will generate about 6,000 gallons of rainwater! That's right, 6,000 gallons! More 

than you were expecting, right? 

To determine what you might collect: 

1. First, determine the size of the collection area in square feet by multiplying the length by the 

width. For example, if the roof of my house is 20’ by 80’, then the size of the area is 1600 

square feet. 

20’ x 80’ = 1600 sq. feet 

2. Since, for every inch of rainfall, we can expect to collect 600 gallons on 1000 square feet of 

collection area, that means that every square foot of roof will collect 0.6 gallons of rainwater 

for every inch of rain that falls (1000 / 6oo = 0.6). 

3. To calculate how much rainfall will collect on each square foot of my roof over the entire 

rainy season, multiply the amount collected per inch of rainfall, 0.6 gallons, by the total 

number of inches of rainfall during the rainy season (the 30-year average in Santa Rosa is 

29”). 

29” x 0.6 gallons = 17.4 gallons per square foot 

4. Then, to calculate the number of gallons I will collect on entire my roof, I multiplying the 

total roof area of 1600 square feet by 17.4 gallons. 

1600 x 17.4 =27,840 gallons  

Nearly 28,000 gallons of water each year pours off every roof in the County. Imagine all that 

rainwater going down the storm drains into the Bay! Imagine, instead, all that water going into 

our gardens and percolating into the aquifer. Or watering our drought-tolerant landscapes.

Inilah masa yang sesuai kita belajar sambil ambil pengajaran dan memahami fenomena alam yang biasa kita hadapi - hujan ..terutamanya di musim tenkujuh.

Allah jadikan sesuatu semoga jadi renungan semoga jadi pedoman hidup kita.

Jumpa lagi

Wassalam

Mohamed