There is no requirement as such. Watts is a use of power. For example, Al Gore uses more power per square foot then most of us do. A well run home will use about 500 KWH's of power in a month (on average). A poorly managed home may well run ten times this amount.
Size only changes the heating and air handling costs. If a home uses gas heating the overall cost will also go way down.
The Emerson microwave model MT3070A typically has a power output of 700 watts.
Answer = 20 ft x 34 ft = 680 sq ft
There are 1,466.67 feet per second in 1 mile per hour.
108.2677165 ft Direct Conversion Formula 33 m* 1 ft 0.3048 m = 108.2677165 ft
The amount of watts needed to heat 200 square feet will depend on factors such as insulation, climate, and desired temperature. As a rough estimate, you might need around 10-12 watts per square foot, which would be 2000-2400 watts for a 200 square foot space.
A turn key house can cost anywhere from $80 per square ft to $200 per square ft
To calculate the total kWh usage for a month for a space of 1700 square feet limited to 40 watts per square foot, you first multiply the area by the wattage limit (1700 sq ft x 40 Watts/sq ft). This gives you the total power input in watts in that space. Then divide this by 1000 to convert watts to kilowatts and multiply by the number of hours in a month (typically 720 hours) to get the total kWh usage.
cost per sq ft to paint the interior of a house
It will vary on the room type and construction. However you can assume you want 10-15 watts of energy per square ft. That would mean you want 2500-3750 watts total, which would be 8,500 - 12,750 BTU's (3.4 BTUs/Watt).References:How_many_square_feet_does_a_5000_BTU_heater_heathttp://www.diychatroom.com/f18/btus-watts-35066/
$100 to $150 per sq ft
On average it takes 1 ton per 500 square ft.
I paid $9 ft on a guest house that has 900sq ft...live in TX
1 ton per 500 sq ft. so 5 will do
160 per sq ft
cost to build per sq. ft. in Duncan, b.c.
1400
27-ft x 38-ft = 1,026 square feet of floor per story.