A 4 Module 4

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Dec 6, 2023

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COMMUNITY COLLEGE OF PHILADELPHIA / Architecture, Design & Construction Department Elizabeth Masters SPRING 2021 ADC 212: Construction Materials and Details: Methods ASSIGNMENT #4: Exercise in Building Envelope/Cladding PEDAGOGICAL INTENT: The purpose of this exercise is to provide a vehicle for the student to develop a practical basic understanding of these topics from Module 4. It is based on all of the materials in Module 4, including, but not limited to the assigned readings, the posted lectures, the Zoom recordings (that include some of the lectures, narrated). The student will increase their capacity to seek out information independently and evaluate different choices of materials, systems, etc. DUE: WEDNESDAY, FEBRUARY 17 AT 7:00 PM in Canvas. Label this sheet with YOUR NAME ADC 212 Spring 2021 ASSIGNMENT #4 ASSIGNMENT: ANSWER THE FOLLOWING: ● Show that you understand the material. Your answers should not be shorter than the questions! ● Type your answers into this document . Then submit to Canvas as a .pdf. ● Chapter and Figure numbers refer to 6 th Edition of Fundamentals of Building Construction. 1. (48 pts.) According to FBC Chapter 19 and to the lectures in this module, name 6 of the primary functions of the exterior wall to consider when designing the building envelope. Explain briefly what each means and why it is important. (2-4 sentences each) 1. keeping water out The reason why you want to keep water out is because over time the water can cause a health problem and starts to make stop decay and it’s gross to look at. You also don't want water to get in the building because it can cost you a lot of money to fix anything that is decaying. 2. controlling light you want to have lights that automatically turn off within a certain amount of mins so that the lights don't stay on and cost the place more money. Also have LED light bulbs because they cost less and it gives you more light and it doesnt give that much heat. 3. controlling water vapor having too much water vapor in your build or home can be bad because over time it can make the walls wet and eventually the dry walls will have mold on it. You don't want water vapor in your crawl space or in between the walls because it can cause a lot of damage eventually if it remains unchecked. 4. controlling the radiation of heat The heat from the sun enters through the roof and windows of the house and anything building material will absorb the radiation heat. If there is too much radiation heat in the

home it can be bad but there is a lot of build material that can absorb it such as asphalt, brick, stone. 5. controlling the conduction of heat conduction of heat is the flow of heat through building material. it is important to make sure that your home doesn't have any air leaks. For example if during the winter time you want to keep hot air in but if there is an air leak in your home all the heat will escape through the air leak, making the house colder. 6. controlling sound it is important to control the sounds inside a building because being noisy can be very disturbing for others. When you live in a row home or apartment you want to keep noise down to a minimum because you tend to hear your neighbour if they play loud music or yell at each other. 2. (16 pts.) For the precast concrete curtain wall discussed and illustrated in the lecture, explain one method of attachment for a concrete panel. Also explain what kind of finish the ends of the panels receive when they are installed in the building. precast concrete panels can be hung off of a steel frame structure. there are a couple of finish such as ceramic tiles, thin bricks, or thin stone facings may be attached to precast concrete panels 3. (16 pts.) Define thermal bridging and explain how to address it in aluminum window frames. Including images will enhance your response. thermal bridging is heat transfer, the heat in your home wants to escape and that makes your homes colder causing you to pay more to keep your home warm. To prevent thermal bridging through the window you have to put insulation or spray foam around the window and also make sure it is sealed tight around the window to avoid heat loss in your home. This will improve the r-value of the exterior wall in keeping heat from escaping. 4. (10 pts.) You are a contractor building an 82 storey highrise on a dense urban block where the design calls for the completed building to cover 90% of the site at grade. Explain the advantages and disadvantages of interior glazed curtain wall systems versus exterior glazed curtain wall systems based on the lectures and FBC Chapter 21. the advantages of interior glazed curtain wall systems the workers can stay inside of the build and install the window. Very convenient,economical and safe for a large building. allow more natural light into the building. only applies for large building

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