Precast concrete

Similar to PC concrete, w/b ratio significantly affects the strength of M-S-H mortar mixtures, demonstrated by the increase of compressive strength at all testing ages as water content decreases. The mortar samples at 28 days age obtained low strength of only 20 MPa with…

ARCHITECTURE: Most houses were made of block. The banks of the Nile gave the mud used to make blocks. Block creators gathered mud, added straw and water to it as required, and stepped it with their feet until it achieved the correct consistency. The blend was then put in a shape. Once formed, the blocks were expelled from the shape and left on the ground to dry in the sun. Egyptian workers would have lived in basic mud-block homes containing just a couple household items: beds, stools, boxes…

2.4 Positive impacts of sand mining and gravel extraction worldwide Sand and gravel had been a useful natural resource for thousands of years worldwide and are fundamental to human existence. Today, demand for sand and gravel has increased. Mining operators in conjunction with resource agencies need to work hard and make sure the extraction is done responsibly. Schaetzl (1990) discussed sand and gravel as crucial resources to economic development activities when making aggregate in United…

Laboratory Report 2: Soil Texture, Bulk density and Porosity Introduction Soil Texture The classification of soil texture is determined by the percentage of each of the soil separates. Soil separates are mineral particles smaller than 2mm, and these particles are sand, silt and clay. These textures are separated by the size of the particles, with sand being the largest between 2mm and 0.05mm, silt at between 0.05mm and 0.002mm, and clay at <0.002mm. The size of the particles influences the…

Valeria Avila Guerrero October 30, 2017 Mech 194 Dr. Hight Error in Conceptual Design Case Study: Paconius and the Pedestal for Apollo This case study is based in the ancient world during the time of the temple of Apollo, where large stone pedestals were transported for construction and structural purposes. According to Henry Petroski in Design Paradigms, Case Histories of Error and Judgment in Engineering, these stones were large and heavy which presented a challenge when transporting over…

Vapour diffusion retarders and air barriers are designed to keep a building healthy and strong by preventing moisture infiltration, neutralizing differences in air pressure and preventing heat exchange. Each performs a different function although some materials serve as both an air barrier and a vapour retarder. The Difference Between Air Barriers and Vapour Retarders Architects, engineers and others involved in building science research and construction examine the way that both air and…

ACCOUNTING FOR MANAGERS ASSIGNMENT 1 Ratio Analysis of Cement Industries Titan Cement Company (SA) Titan Group is an Independent multi regional cement producer, and the other building materials. It has its headquarters in Greece. Titan Cements was founded in 1902. The data below is Balance Sheet of three financial years 2011, 2012 and 2013. In Millions EUR Particulars 2013 2012 2011 Assets Cash and short term investments 184 284 334 Total Receivables, Net 112 127 118…

The concept of the arch and concrete was seen as significant as the dwelling places in Rome. They were used to solidify and modify the Roman edifices. An arch is a made of stone, brick, concrete, steel with a curved shape. It supported and strengthened the Roman's buildings thereby making them strong. The last block inserted in an arch is the key stone known as the center stone. They mostly consist of wedge-shaped blocks (Cary and Scullard, 1975). When arches are made, they are supported by a…

Slate Roofing: Why It Is An Excellent Choice For A Home In the process of constructing your home and need to pick a roofing material? It may be tempting to go with traditional asphalt shingles, but know that slate can be an excellent choice for a home. Slate has many benefits that make it an appealing option to use during new construction. Consider the following 3 benefits. Slate is Durable Many homeowners love slate because the material is fireproof. Slate also has the durability of…

Selecting the right fence for you will depend on what you want the fence to do for you. Are you after privacy, do you need security, are you going for decoration, do you need a fence to contain pets or children or do you simply need a perimeter demarcation line? Often you'll find you need a mix of all the above options rather than a straight forward simple selection. With this in mind we can evaluate which common fences may be best for you. If privacy is the watch word in your selection you'll…