Precast concrete

1.0 Introduction A wire is defined as a single, flexible strand or rod of metal which is typically cylindrically-shaped. The core applications of wire, both single- or multi-stranded wire, are to withstand or carry mechanical loads in construction sector, whereas in electrical and electronic field are used to transmit electricity and telecommunications signals. For examples, from view of construction, wires are either braided or fixated together to form a bundle of strands, namely…

‘Shape Factor' New Concept as a Determinant The Thermal Behavior of the Domed Roof: A Comparative Study Jamal Abed Al Wahid Jassim al Sudany Department of architectural Decorating, Institute of Applied Arts, Middle Technical University-Iraq Jamal_al_sudany@yahoo.com Abstract— Domes were used extensively to cover the roofs of buildings, particularly mosque buildings; The purpose of this paper was to examine the role of the formation of domed roof of the thermal behavior of a relationship…

On November 7th, 1940, the Tacoma Bridge collapsed into the Tacoma Narrows straight in Washington State. The bridge connected the town of Tacoma and the Kitsap Peninsula, and was one of the first major suspension bridges in the western United States. Unlike other suspension bridges constructed around this time, the Tacoma Bridge failed to withstand wind speeds over 40 miles per hour, due to unequal stress on parts of the bridge. The construction of a suspension bridge must include geometric…

All metal manufacturing includes a solidification process. The metal is either atomised to a powder, or it is cast. There is several casting methods used today. Many of the methods use the mould only once, for example sand mould casting, the lost-wax method and precision casting. For larger quantities of liquid metal, there are basically two methods: ingot casting and continuous casting. Ingot casting normally uses a permanent mould made by cast iron isolated by ceramic material. There are…

In engineering, be that as it may, the Romans consumed some imperative methods from the Etruscans before Greek impact was conclusively felt. This incorporated the arch and the vault, which were bound to convey Roman designing into an advancement specifically far from that of antiquated Greece, who favored "post-and-lintel" building techniques to curves and arches. Accordingly was established the framework of the art in which the Italic people groups were to outperform the Hellenes: auxiliary…

The Roman Empire expanded their technology and facilities out into their colonies –this helped in showing the Empire’s might. The Romanisation of the Empire’s colonies manipulated the view the local people had of them; as such the grand and lavish Roman architecture present throughout the Roman Empire emphasized their power and strength. By giving the local people the same amenities available in Rome, the Emperor was guaranteed their support and utter devotion. The Hadrianic Baths, for example,…

a bomb shelter begins as a hole in the ground, it will then be molded into a round or square shape with concrete and lead. after the concrete and lead harden you will make a hole to enter the shelter. once the hole is made you will recover it with dirt and grassy stuff. add a door and air filtration. add some furniture and you are done! Through the ages, bomb shelters have used many different materials to protect its inhabitants. However, a modern bomb shelter requires many materials for…

Earthen materials show interesting environmental advantages when used to build [1]. These materials are becoming increasingly important in the context of the modern desire of construction materials which are less highly processed and have low toxicity [2][3][4]. Nowadays, there are several available techniques where these materials can be used with structural purposes, namely as earth blocks (adobe), compressed earth blocks (CEB), rammed earth and cob [5] but the lack of scientific data and lack…

generally believed that most buildings are constructed with typical materials such as concrete, wood, and steel. It is true because those materials provide structural safety according to the building’s height, size, or usage. In Ontario area, tremendous buildings are located and have been getting high-rise and ecologic. While usual people think in terms of common envelope system of buildings as curtain-wall or concrete, from my perspective, Terrence Donelly Centre in University of Toronto and…

III. RESULTS AND DISCUSSION A. Influence of specific gravity to water to binder ratio of M-S-H binder In development of M-S-H binder with magnesium oxide and silica fume, it is noted that silica fume has rather low specific gravity (S.G) and bulk density compared to Portland cement (PC). Thus, use of high silica fume content in the binder consequently results in a binder system of low specific gravity and bulk density, compared to PC. The light weight binder leads to a difference in water to…