Flat Roof Phyics Problem

Children playing in a playground on the flat roof of a city school lose their ball to the parking lot below.

Flat roof phyics problem.

Flat roofs aren t actually flat. 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. Assume the roof is not nailed down. 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.

Ii a 180 km h wind blowing over the flat roof of a house causes the roof to lift off the house. 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. If a flat roof is properly designed it will typically have a very slight slope. One of the teachers kicks the ball back up to the children as shown in the figure below.

The vertical wall of the building is h 5 7 00 m high forming a 1 m high railing around the playground. A playground is on the flat roof of a city school 6 00 m above the street below fig. But you can avoid the bulk of these problems with regular maintenance. However in my own experience the problems with leaking flat roofs are usually as a result of either poor workmanship installing the roof membrane poor maintenance by the building owner or as a result of age.

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. Installing a flat roof is usually done with an epdm rubber membrane. Flat roofs are known as being problematic with many suffering leaks. First of all we should clear up a common misconception.

In the past this type of membrane has been unified with just adhesives but today both adhesives and cover tape to correct. Some roof leaks are tough to locate. If the house is 6 2 m x 12 4 m in size estimate the weight of the roof. A leak in a flat roof can lead to eventual collapse and tons of property damage if you re not careful.

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.