Assume the roof is not nailed down.
Flat roof phyics problem.
In the past this type of membrane has been unified with just adhesives but today both adhesives and cover tape to correct.
One of the teachers kicks the ball back up to the children as shown in the figure below.
This is the most common roofing problem and it tends to get worse during the day when the heat of the sun causes the trapped moisture to expand.
Ii a 180 km h wind blowing over the flat roof of a house causes the roof to lift off the house.
A playground is on the flat roof of a city school 6 00 m above the street below fig.
Installing a flat roof is usually done with an epdm rubber membrane.
Flat roof defect 2 blistering even small amounts of trapped moisture can result in your flat roof membrane detaching from the layer below and cause roof blisters.
If the house is 6 2 m x 12 4 m in size estimate the weight of the roof.
Flat roofs are known as being problematic with many suffering leaks.
A ball has fallen to the street below and a passerby returns it by launching it at an angle of u 5 53 0 above the horizontal at a point d 5 24 0 m from the base of the building wall.
First of all we should clear up a common misconception.
Leaks and moisture probably the most common problems with flat roofs leaks and lingering moisture are issues that can be dealt with effectively as long as you stay on top of them.
A leak in a flat roof can lead to eventual collapse and tons of property damage if you re not careful.
If your ceiling has a plastic vapor barrier between the drywall and the attic insulation push the insulation aside and look for flow stains on the plastic often water runs to openings in the vapor barrier such as at ceiling light fixtures.
If a flat roof is properly designed it will typically have a very slight slope.
Just like any roof a flat roof will develop leaks but since it s flat the water doesn t have anywhere to go but straight down.
But you can avoid the bulk of these problems with regular maintenance.
Flat roofs aren t actually flat.
The vertical wall of the building is h 5 7 00 m high forming a 1 m high railing around the playground.
Children playing in a playground on the flat roof of a city school lose their ball to the parking lot below.
The playground is 4 60 m above the parking lot and the school building s vertical wall is n 6 10 m high forming a 1 50 m high railing around the playground.
