Home & Garden
Republican National Conventions
Fire Prevention and Protection

Does a 1 hour fire resistant door really only last 20 minutes before it burns up in fire?

Top Answer
User Avatar
Wiki User
Answered 2007-03-20 01:44:53

No. A fire resistance rating is determined by the amount of time a partition will prevent the spread of fire, so a one-hour door (and its wall and supports) would have to hold back a typical fire growing for at least one hour. For example, a 20-minute fire rating requires a fire door to withstand an intense fire on one side, rising to over 1,400 degrees F during twenty minutes, and then being hit by a pressurized fire stream, without causing any openings.

User Avatar

Your Answer


Still have questions?

Related Questions

What is fire resistant?

When something is resistant to fire it burns slower.

What will happen to lead if it burns?

nothing it just stinks really bad try not to breathe it in it could be harmless or could kill you in a few minutes

Do hair straighteners really damage your hair?

yeah, it burns it unless you spray heat protectant in it before straightening

What did Robert Burns do before he started poetry?

Robert Burns was a farmer before he did poetry xx

Is wool flame reststant?

It is not completely flame resistant, but it is more flame resistant than most other materials- cotton burns extremely fast and synthetic fabrics melt.

Why must the hair be completely dry before pressing?

Because it burns your hair, and then it becomes split ends really bad!

How many calories are burnt skipping?

moderate skipping burns on average 70kcal per 10 minutes intense skipping burns on average 110 kcal per 10 minutes

How long after a relaxer can you wash your hair?

about 8-10 minutes.If it begins to really burn before 8-10, wash out immediately because chemical burns can occur.If 10 has past and no burning or itching has occurred yet, you may leave it in for another additional 5 minutes

Running burns 14 calories per minute how many calories would you burn if you ran for 40 minutes?

Under these conditions running for 40 minutes burns 40 x 14 = 560 calories

Hoe may calories burns in running for 15 minutes?

150 calories are burnt while running for 15 minutes.

What is the idiom of Im boiling?

"That really burns me up."

Does temperature affect the way a candle burns?

no not really

What age was Robert Burns before he died?


What is a three letter word for before to burns?


What is the name of Robert burns mother?

Her name was Agnes Broun before she got married but it changed to Agnes Burns

How many calories can you burn on stepper?

About 10 minutes of stepper burns about 100 calories.

Does a candle really burn?

Well no not that candle itself. really on the wick there is wax and that is the thing that actually burns but the hot wax coming down makes it look like the candle burns.

How many calories you burn in tempo-dancing in 20 minutes?

Dancing for 20 minutes at a moderate pace burns about 100 calories.

How many light bulbs burn out every five minutes?

No light bulb burns out every five minutes unless your lamp is stupid.

Carlos burns 75 calories for every 15 minutes he walks how many calories will carlos burn if he walks for 45 minutes?


How many calories burned in 10 minutes on a trampoline?

The answer is 200 calories. The trampoline is the second fastest calorie burner on the planet. Trampolining - correctly, using routines (not just bopping around) - burns 3 times more calories than jogging. 30 minutes of jogging at 5.5 km per hour burns 407 calories. Therefore trampolining burns 200 in just 10 minutes.

What can cause severe burns?

Anything that becomes really hot when the car is operating... engine block, fluids, exhaust pipe... wait for the thing to cool down before working on it.

How long does the Sun have before it burns out?

About 5 billion years.

What was Pat Burns before being a hockey coach?


What actors and actresses appeared in Before the Light Burns Out - 2013?

The cast of Before the Light Burns Out - 2013 includes: Bryan Breau as Trust Annie McCain Engman as Love