RoofConstruction-Terminology

The Common Rafter and Purlin Roof As a civil engineer or roof contractor, you should aware of the construction of a roof and trussed roofs also types of roof construction in the industry. So, here our new article about roof rafter and purlin roof related to roof construction. The structure is most commonly used where there is a gable at both ends of the roof and is frequently to be found on terraced houses, as indicated in the below picture. This simple form of roof is illustrated in below picture. Its construction has been included here because of the now very common refurbishment of such houses. The wall plates are often simply bedded on mortar on either the inner skin of a cavity wall or, as is often the case with older terraced houses, on the inside edge of a solid 9 in. brick wall. Wall plates should be half lapped where they meet, and should not be less than 75 mm wide and 50 mm thick. They should be treated with preservative. Below picture sho...

Different Types Of Trusses Roofs A Trusses roof is a structural framework that has designed offer strength and support to a roof. Therefore, roof trusses are one of the most important things in the roof construction. In this article, you will learn about different types of trusses roofs. Such as king post truss, queen post truss, mansard truss, truncated truss, bel-fast roof truss.  King Post Truss In this type of truss, the central vertical post, known as king-post, forms a support for a tie beam. A king post truss is suitable for roofs of span varying from 5 to 8 meters. King post trussed roof Queen Post Truss This truss differs from a king post truss in having two vertical posts, known as queen post. This type of trussed roof is suitable for spans varying from 8 to 12 meters. Queen post trussed roofs Mansard Truss This truss is named after a french architect Francois Mansard. It is a combination of king-post and queen post trusses. The mansard truss ...

Benefits Of Timber Roof Trusses In Building Construction Wood or Timber roof trusses are widely used in the USA, Canada, and other countries because of its advantages over other trusses, as it offers great flexibility in plan layout. Be it a residential, industrial, commercial, or an institutional building, roof of any kind of structure is the most important component of a building as it protects its occupants from the external elements of roof trusses in building construction. It is also the largest and the most expensive structural component of a building so investing some thoughts and know-how in the design and planning of a roof to create an aesthetically pleasing and sound structure that can safely carry the induced loading, while offering acceptable longevity and an attractive appearance for the lifespan of the building is nothing but logical. There are basically two kinds of material that are prevalent around the globe for the fabrication of trusses: Steel and Wood. While ...

Physical Properties & Safety Tests of Asphalt as a Roofing Material Asphalt Binders Asphalt or bitumen is a thick, black or brown, viscous liquid and a by-product of crude oil. Asphalt functions as an inexpensive, waterproof, thermoplastic, viscoelastic adhesive in road construction and some other applications. Background The first recorded use of asphalt by humans was by the Sumerians around 3,000 B.C. Statues from that time period used asphalt as a binding substance for inlaying various shells, precious stones, or pearls. Other common ancient asphalt uses were preservation (for mummies), waterproofing, and cementing (used to join together bricks in Babylonia). In more modern times, asphalt paving use first began with footpaths in the 1830s and then progressed to actual asphalt roadways in the 1850s. The first asphalt roadways in the U.S. appeared in the early 1870s. Refining In the simplest terms, asphalt binder is simply the residue leftover from petroleum refining...

History of Roofing Construction Introduction It may be defined as the uppermost part of the building, provided as a structural covering, to protect the building from weather. Structurally, a roof is constructed in the same way as an upper floor, though the shape of its upper surface may be different. The roof consists of structural elements that support the roof is the roof covering. The roof coverings may be A.C. sheets, G.I. sheets, wooden shingles, tiles, slab itself. Requirements Of a Roof It should be durable against the adverse effects of various agencies such as wind, rain, sun, etc. It should grant the desirable insulation against sound and heat. It should be structurally stable and sound, it should be capable of taking the loads likely to come over it. It should be well-drained. It should have an efficient water-proofing arrangement. Roofs Are Important Because It provides protection from the weather. It helps in reducing the heat loss from a building. It...

Asphalt Shingles As Roofing Material And It's Types The manufacture of asphalt roofing materials has been undergone from the 1890s. Today asphalt shingles cover 70 to 80 percent of the roofs in the United States. It has now spread to different parts of the world. The asphalt roof shingles are very attractive, versatile, and provide high fire and wind resistance. The shingles cost is economical which makes it relatively inexpensive in terms of aesthetics and the durability it provides to the building. The asphalt shingles can be very easily installed and require little maintenance. The normal life expectancy of the asphalt roof shingles is in the range of 15 to 20 years. The fiberglass shingles provide a life expectancy of 20 to 30 years. Asphalt Roof Shingles Types of Shingles for Roof Organic Shingles The organic-based asphalt shingles consist of a base mat composed of cellulose fibers made from recycled paper or the wood chips and cotton or the wool rugs. But pr...

Attic Construction Using Modern Engineered Timber Components The wide growth within the use of attic construction to form the utmost use of the building envelope, as well as the dearth of consummate building labor, has resulted within the fast development of designed timber elements to be used not solely in floors, however additionally within the construction of the roof part itself.  This chapter addresses the developments, several of that, like bound rafters, area unit trade-named merchandise developed by specialist timber engineering firms. For that reason a number of the illustrations during this chapter, like those in Chapter half dozen that deal with bound rafter systems, area unit drawn from the assorted manufacturers’ technical and trade literature. The Floor Engineered timber within the varied forms illustrated in Fig. 3.13 has existed for a few sizeable times. However, the demand from the house building business normally for a product of higher quality than sol...