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    Butterfly Roof

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    Landel Smith
    This document discusses the butterfly roof. It begins by defining the general purpose of roofs and then focuses on the specific characteristics of the butterfly roof. The butterfly roof gets its name from its resemblance to the shape of butterfly wings. The document outlines the main members that make up a butterfly roof, including that the outer walls are higher in the center to create a distinctive shape. It also details the key advantages, like increased natural light, and disadvantages, such as difficult drainage. Finally, the passage provides a multi-step process for constructing a butterfly roof from start to finish.

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    Attribution Non-Commercial (BY-NC)
    Download as DOCX, PDF, TXT or read online from Scribd

    Butterfly Roof

    Uploaded by

    Landel Smith
    3K views11 pages
    This document discusses the butterfly roof. It begins by defining the general purpose of roofs and then focuses on the specific characteristics of the butterfly roof. The butterfly roof gets its name from its resemblance to the shape of butterfly wings. The document outlines the main members that make up a butterfly roof, including that the outer walls are higher in the center to create a distinctive shape. It also details the key advantages, like increased natural light, and disadvantages, such as difficult drainage. Finally, the passage provides a multi-step process for constructing a butterfly roof from start to finish.

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    A word document about butterfly roof

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    This document discusses the butterfly roof. It begins by defining the general purpose of roofs and then focuses on the specific characteristics of the butterfly roof. The butterfly roof gets its name from its resemblance to the shape of butterfly wings. The document outlines the main members that make up a butterfly roof, including that the outer walls are higher in the center to create a distinctive shape. It also details the key advantages, like increased natural light, and disadvantages, such as difficult drainage. Finally, the passage provides a multi-step process for constructing a butterfly roof from start to finish.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    3K views11 pages

    Butterfly Roof

    Uploaded by

    Landel Smith
    This document discusses the butterfly roof. It begins by defining the general purpose of roofs and then focuses on the specific characteristics of the butterfly roof. The butterfly roof gets its name from its resemblance to the shape of butterfly wings. The document outlines the main members that make up a butterfly roof, including that the outer walls are higher in the center to create a distinctive shape. It also details the key advantages, like increased natural light, and disadvantages, such as difficult drainage. Finally, the passage provides a multi-step process for constructing a butterfly roof from start to finish.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 11

    Butterfly Roof

    Construction Technology (II) Lecture: C. Johnson Module: 1 Roof Construction Assignment: 1 Group: 3 Butterfly Roof Members: Landel Smith-2012025764

    Introduction
    This project will educate its reader about roofs and there functions with emphasis placed on the Butterfly roof. The completion of the project will see to the reader having a clearer view on the advantages and disadvantages of using the butterfly roof, the members of the butterfly roof and how the butterfly roof is constructed. We hope you learn a lot from this project.

    Table of Content
    What is a roof? Page

    Butterfly Roof

    Members of a Butterfly Roof

    Advantages of a Butterfly Roof

    Disadvantages of a Butterfly Roof

    Steps in constructing a Butterfly Roof

    Bibliography

    What is a roof?
    A roof can be defined as the upper most covering of a building, and in this position it is fully exposed to the rain, snow, wind, sun and general atmosphere. Roofs should provide the following functions:

    keep out rain, wind, snow and dust; prevent excessive heat loss in winter; keep the interior of the building cool in summer; accommodate all stresses encountered; accept movement due to changes in temperature and moisture content; provide lateral restraint and stability to adjacent walls; resist penetration of fire and spread of flame from external sources.

    There are many different types of roof but we will focus on one, the butterfly roof.

    Butterfly Roof
    A butterfly roof, or inverted roof as it is sometimes called, are eye-catching designs found on residential and commercial buildings all over the world. The roofs are named for their resemblance to the outstretched wings of a butterfly. The outer walls of this roof are higher than they are in the middle. Because of their design they and allow for very open floor plans with large living and family rooms.

    Members of a Butterfly Roof

    Advantages of a Butterfly Roof


    In areas that regularly experience drought, the central areas of butterfly roofs are used to catch rainwater, which is then directed into containers for crop irrigation or other jobs that require water that doesnt have to be purified. Butterfly roofs create taller-than-average walls on two sides of the buildings they cover, so large, tall windows and glass doors let in more sunlight than do conventional structures with pitched roofs. They may also give rooms an open, airy ambiance.

    Disadvantages of a Butterfly Roof


    The main drawback of a butterfly roof is drainage, which makes the design impractical in regions with heavy rainfall. When the water accumulates in the center of the roof and is not regularly routed into a container, the weight of the water either blocks the drainage system or overburdens the supporting beams and causes leakage. Although butterfly roofs provide tall walls on two sides of buildings, the center of the structure has low ceilings with upward slopes on either side, which create challenges in lighting and dcor.

    Steps in constructing a Butterfly Roof


    Step 1- Calculation and Measurements The first step in constructing the butterfly roof is measure measurement and calculation. You first measure the span of the building to determine the slop or pitch of the roof. With the pitch of the roof you can now determine the length of the rafters and where on the rater to make the seat cut and the plumb cut. In the roofing world it is said that you must Calc it before you cut it. Step 2 - Assembling the members Now its time to do the actual cutting of the roof. You first get the valley ridge board and mount it in the centre of the roof and to the depth according to the span, then plumb and level the valley ridge. Now if the width of the building is closed and wall plated with the V shape you can go ahead and toenail the valley ridge to the wall plates, but if the width of the roof is opened, like a garage for instance, you then will have to use a dead man support at both ends of the valley ridge to hold it up to receive the rafter. Having already made the seat cut and the plumb cut for each rafter you now connect the seat cut to the wall plate and the plumb cut to the valley ridge with either nails or screws for each rafter places at 2(600mm) on centre. Step 3 - Apply Plywood Begin laying the plywood at the bottom of the roof and work your way up. Use a hammer and nails or a nail gun to nail the plywood to the roof frame. Install the plywood one side at a time, and cut the plywood to fit where it meets in the middle of the roof. Try to fit the center plywood pieces flush and tight together. Apply caulk in seams and cracks.

    Step 4 - Lay Felt Tar Paper Make sure that the weather is dry before you begin laying felt paper. Begin at the bottom of the roof and work your way up as you roll out the felt paper. When rolling out the felt paper, make sure to overlap the paper at least 5 to 7 inches. Use the felt tacks to secure the paper to the plywood. Step 5 - Apply Shingles to Roof Begin at one of the lower edges of the roof and begin laying shingles. Only use one or two nails on each side of the single and work your way across until a complete row is finished. Then go back to the beginning of a row and begin laying the next layer. Allow the shingles to overlap an inch or two when creating a new row. When you have finished laying shingles all the way up the roof, you can go back shingle the corners. Use a single shingle on the corners and work your way up the roof.

    Bibliography
    http://www.buildinglifeconsultancy.com/2010/05/an-experimental-project-is-born/ Retrieved at 12:18 on the 17/09/13

    http://www.doityourself.com/stry/how-to-build-a-butterfly-roof#.Uj7zrX_NPwk Retrieved at 12:11 on the 17/09/13

    http://www.ehow.com/info_12177942_structure-butterfly-roof.html#ixzz2fAmLVhUi Retrieved at 12:40 17/09/13

    http://www.homedesigndirectory.com.au/construction/roof-construction.php Retrieved at 12:22 on the 17/09/13

    http://www.renovate.org.nz/art-deco/roofs-2/roof-form-original-details/ Retrieved at 12:53 17/09/13

    http://stat2.architizer-cdn.com/mediadata/projects/292011/rx410/3ce4e586.jpg Retrieved at 12:55 17/09/13

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