by saddles of copper. It was pretty much anticipated that galvanic corrosion would occur so both of the metals were separated by an insulation known as “asbestos and shellac” insulation (Shellac is a natural resin that was widely used in the Victorian period as a lacquer or protective coating). However despite pre-emptive measures acidic rainwater soaked the insulation thus providing electrolytic conduction between metals which resulted in galvanic corrosion. The corrosion was detected in the 1980s
Premium Electrochemistry Corrosion Statue of Liberty
Structural weakness Typically‚ 1970’s structures may require additional strengthening as part of the refurbishment works. Analysis of whether any loadbearing components have been removed should always be conducted so as to determine if bracing is supported and any other evidence of structural issues. Moisture Structures typically built in the 1970’s would have fewer weather tightness concerns. Although‚ weathertightness can occasionally be an issue if any fitted cladding has deteriorated over time
Premium Weather Structural engineering Climate
benefit. Make sure you have adult supervision and assistance‚ where required‚ when working on these projects. Science Fair Project Ideas — Insulation Testing This is one of the more practical science fair project ideas since it relates to insulation‚ which is a common material in home construction. I tested the insulation value of some common materials to see which one worked best. The pictures below show pictures of the basic set up I used. The figure below shows three large
Premium Heat transfer Temperature Heat
Place wall insulation - 2nd floor 52 FS 54. Place ceiling insulation - 2nd floor 60‚53 FS‚ FS 55. Conduct insulation inspection 54 FS 56. Drywall 57. Install drywall - 1st floor walls 52 FS 58. Install drywall - 1st floor overhead 57 FS 59. Install drywall 2nd floor walls 58‚53 FS‚ FS 60. Install drywall 2nd
Premium Management Project management Project
came up with a new product of blown insulation that would be cheaper than but just as effective as fiberglass insulation to help with gaining back money they were losing. Susan Taggert was to gather all information for this product. As she compiled information she noticed that three of seven scientists‚ who developed the product contracted bronchial irritation of varying degrees of severity (Markel‚ 2004‚ 6th ed). Susan found that a compound in the insulation could have affected those technicians
Premium Decision making Chemical compound
tragedies occurred in February of 2003. During re-entry after two week mission‚ the Columbia shuttle broke apart. A thorough investigation linked the cause to a section of the silica ceramic insulation foam that lined the underbelly of the spacecraft. The entire crew was killed. Lost or damaged insulation tiles have been a reoccurring issue that never escalated into life threatening status until now. During the investigation‚ NASA officials noticed that a chunk of foam was dislodged during the
Premium NASA Space Shuttle Space exploration
ELECTRICAL SUBSTATION A substation is a part of an electrical generation‚transmission and distribution system. Substations transform voltage from high to low‚ or the reverse‚ or perform any of several other important functions. Electric power may flow through several substations between generating plant and consumer‚ and its voltage may change in several steps. Substations may be owned and operated by a transmission or generation electrical utility‚ or may be owned by a large industrial or commercial
Premium Transformer Electric power transmission
Myelin Sheath In a neuron‚ the myelin sheath consists of fat-containing cells that insulate the axon from electrical activity. This can be compared such as the insulation of a house. The main purpose of the insulation is to increase the rate of transmission of signals in the neuron. There is a small gap between each myelin sheath cell along the axon. Since fat inhibits the proper agitation of electricity‚ the signals jump from one gap to another. The destruction or loss of the myelin sheath in
Premium Nervous system Neuron Axon
universal home model. Conduction can be seen when the ice touched the cans full of insulation. The cooled cans touched the installation inside the can making it cooler. Convection can be found al over the place in our experiments. When we heated our model dwelling with the heat lamp the outside of the house heated. This in turn heated the air inside making the air temperature rise. Also‚ when we put the insulation cans in warn water the water heated up the can. And lastly‚ in the insulated
Premium Heat Heat transfer Energy
c cabHigh Voltage Cables Next Nexans Norway AS Cable installation in Lofoten in 1961 For more than eighty years‚ Nexans Norway AS – formerly Standard Telefon og Kabelfabrik AS (STK) – has been the principal supplier of power cables in Norway. These eight decades have seen enormous development of the country´s hydropower resources. Today‚ Norway´s consumption of electricity per capita is higher than that of any other country in the world. Most of the hydro-electric power stations are
Premium Cable Electric power transmission