What are the advantages of Hollow Core Slab?
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Lower cost and Less weight.\n\nA properly designed Hollow Core Slab will have the same  or greater strength in load bearing characteristics as a Solid core Slab. The Hollow Core can be re-in forced by the Manufacturer\n\nsee the following URL for additional details:\n\nhttp://www.hollowcore.com.au/products/hcore/\n\nHope this assists you.
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so that the signals can come in...and bounce back out....it saves energy....also...it can gather more signals than just a flat plate that will let signals just bounce off the surface\n~Brendon
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Boy, where to start?\n\nAll except dirt roads have a "base" or "road base" under them consisting of gravel or other mineral soil (not clay or silt).  It serves many purposes - it distributes the load to a wide area of underlying native soil (forces from a point load bear within a 45-degree angle so a 2-foot-thick base spread a load to a 4' x 4' area).  For an interstate, that can be 3 or 4 feet of gravel top by as much as a foot of concrete.\n\nAnd, in freezeing climates, the base separates and therefore protects the pavements from freeze-thaw movement of wet ground beneath.  In extremely cold climates with wet, fine-grained soils beneath, as much as 15 or 20 feet of gravel can be needed.  The Alaskan Highway through northern BC and Yukon is an example.\n\nAsphaltic versus portland-cement concrete (they are both concretes but are often called blacktop/macadam/tarmac versus concrete):  Portland cemernt is a stronger and more versatile binder - for instance, you can use rounded gravels.  Asphaltic concrete requires crushed stone with its angular pieces with greater surface area.  Also, asphaltic concrete is senstive to creep at very high temperatures.\n\nBoth AC and PCC are available in many, many forms.  Strength, temp resistance, salt tolerance, cure times, etc are by selected as needed.  And the aggregate (the gravel inside) is important.  The concrete mix can't be stronger than the aggregate used to make it.\n\nPCC is rarely used without steel reinforcement.  They make a great composite material because the concrete is very strong in compression while the steel is great in tension.  That's why you see workers threading together an intricate cage of steel before pouring a concrete roadbed nad especially before pouring a wall, column or bridge.\n\nThermal expansion/contraction - yes, many roadways are poured with expansion gaps - they cause rhythmic bumps as you drive along.  AC is often poured continuously.  The cracks that naturally form get bigger in the cold when the pavement contracts.\n\nHope that helps a bit.  Engineers spend a few semsters studying concrete design and some people spend their whole careers on it.
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Concrete slabs typically have a high thermal mass. In older buildings, concrete slabs cast directly on the ground can drain heat from a room. In modern construction techniques, concrete slabs are usually cast on top of thicker layers of insulation, for example expanded polystyrene, and may contain underfloor heating. Even so their thermal mass can lead to a delay warming the room when the heating is switched on.\n\nYou could try contacting UHMA, which is the Underfloor Heating Manufacturers Association and ask them for some help!    I have also listed some people who do thermal insulation.\n\nHope this all helps with your project!   And they may also send you drawings so you can include them!
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i found this explanation interesting:\n\n"circular manhole covers have the advantage that you don't have to get the corners lined up when dropping them into place."
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Also known as IT has many advantages. Most mentioned by the two previous answers. Good Luck on your recitation.
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hymm cast iron   well it has a very high carbon content  makes a real good pancake griddle or frying pan  doesnt warp under heat like many metals  its cheap   usually done in a sand mold\nis  used fore engine blocks ect   not good fore structural aplications as it is rigid  wont flex like black iron
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I think what you're thinking of is the depth of the grind - otherwise known as "Radius of Hollow" (or ROH). The deeper the hollow, the more grab you'll have on the ice.  The shallower, the easier it will be to glide.  ROH is typically anywhere from 1/2" to 5/16", but most shops I know of grind at 3/8"
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There rarely exists a "hollow area."  The oil occupies tiny voids within the (sand?) strata and often collects in usable amounts in domes and folds capped by impervious rock.  After the oil is extracted the land above often settles as the voids compact.
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It is a state tax.  It differs from state to state.  There are no slabs but fixed amount depending on your professional income.
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Dissipation in a yield line\nIf the axes of rotation for two slab parts are not at the same depth measured from the slab surface,\nthe relative displacement discontinuity is no longer perpendicular to the yield line. The angle\nbetween the displacement discontinuity and the yield line changes with the depth from the slab\nsurface and this must be taken into account when calculating the dissipation.\n\nAnd you will find more from this book.
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Slim, hotswappable blade servers fit in a single chassis like books in a bookshelf — and each is an independent server, with its own processors, memory, storage, network controllers, operating system and applications. The blade server simply slides into a bay in the chassis and plugs into a mid- or backplane, sharing power, fans, floppy drives, switches, and ports with other blade servers. \nThe benefits of the blade approach will be obvious to anyone tasked with running down hundreds of cables strung through racks just to add and remove servers. With switches and power units shared, precious space is freed up — and blade servers enable higher density with far greater ease.\nFor more help you cab go to: http://en.wikipedia.org/wiki/Blade_server
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A monolithic concrete floor is poured completely before finished, and hardens as a single concrete structure.   The exceptions to "monolithic" would be a structure that has concrete footings upon which a wood or concrete floor is added later.  There is no "adding later" when you do a monolithic slab ... any stiffening beams or footings are ONE with the floor, and vica-versa.
89822
It helps, but air temperature and density is what makes the biggest difference. Cold, thick air makes the most power.
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to maximize surface area for the collection of sunlight and minimize weight and material used. also, yes it helps transport water and nutrients.
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Because it's solid not hollow
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Here is a cached page from an MIT project that contains info. and formulas. You will need to go to the page to see the formulas because they are images and cannot be cut and pasted here.\n\nhttp://216.239.51.104/search?q=cache:tTGUiKMyOvsJ:web.mit.edu/12.000/www/m2005/a2/finalwebsite/equipment/transport/Hull.shtml+submersible+hull+pressure+resistance&hl=en&gl=us&ct=clnk&cd=1&client=firefox-a\nPressure Hull\nPressure Hulls – the structure that provides the occupants of an underwater submersible with a dry, pressure resistant habitat.\n\n   1. Shape - The pressure hull consists of spherical or cylindrical shapes in various combinations. Table 1 illustrates the advantages and disadvantages of various pressure hull shapes.\n\n      Table 1. Advantages and Disadvantages of Submersible Pressure Hull Shapes\n      Shape \n\n      Advantages\n      \n\n      Disadvantages\n      Sphere\n      \n         1. Most favorable weight to displacement ratio\n         2. Thru-hull penetrations easily made\n         3. Stress analyses more accurate and less complex\n      \n         1. Difficult and inefficient interior arrangements\n         2. Large hydrodynamic drag\n      Ellipse\n      \n         1. Moderate weight to displacement ratio \n         2. More efficient interior arrangements than in sphere \n         3. Thru-hull penetrations easily incorporated\n      \n         1. Expensive to construct \n         2. Difficult to perform accurate structural analysis\n      Cylinder\n      \n         1. Inexpensive to construct \n         2. More efficient interior arrangements than in ellipse\n         3. Low hydrodynamic drag\n      \n         1. Least efficient weight to displacement ratio\n         2. Interior frames required to increase strength\n\n   2. Materials\n\n      The selection of an appropriate pressure hull material is based on the following criteria:\n\n         1. Corrosion Resistance – the ability of a material to resist its deterioration by chemical or electrochemical action within its environment.\n         2. Resistance to Stress-Corrosion and Cracking – the ability of a material to resist failures caused by the combined action of a flaw (e.g. a crack) and tensile stress.\n         3. Resistance to Low Cycle Fatigue – the ability of a material to withstand localized fluctuating stress.\n         4. Creep Resistance – the ability of a material t withstand permanent deformation over time.\n         5. Stress Relief Embrittlement – the process by which localized residual stresses in a metal are reduced by the reduction in the normal ductility when a metal is heated to a suitable temperature and slowly cooled.\n         6. Resistance to Brittle Fractures – the ability of a material to resist failures with little or no plastic deformation.\n         7. High Strength to Density Ratio – the material must be strong and light.\n         8. High Ductility – the ability of a material to deform plastically without fracturing.\n         9. Fracture Toughness – the ability of a cracked material to resist catastrophic propagation of cracks.\n        10. Weldability – the property of a material which allows it to be welded under normal conditions.\n        11. Formability – the ability of a metal to be shaped through plastic deformation.\n\n          Submarine pressure hull are usually made of steel, aluminum, titanium, acrylic plastic and glass. However, the most widely used material is steel, because of a high degree of knowledge available to designers and manufacturers as well as of its outstanding performance in the ocean.\n\n          Aluminum is generally considered unacceptable as a pressure hull material because it is unweldable and is subject to stress-corrosion cracking. Nevertheless one solution would be to bolt the hull together instead of welding and anodize it to resist stress-corrosion cracking. Pure titanium is too susceptible to stress-corrosion at high tensile stress levels, but titanium graphite