1, describe the methode of reducing the levels and thier relative advantages and disadvantages
2, writetypes of levelling instruments and methodes of leveling
Describe the methods of reducing the levels, and their relative advantages and disadvantages.
I'm guessing you are doing the same course as me!!This was a help to me: from google books. I hope this link works, if not try searching for comparisson of HOC & R&F methods.http://books.google.com/books?id=hqFcPbmmxC4C&pg=PA131&lpg=PA131&dq=Reducing+levels+by+rise+and+fall+method&source=web&ots=F7x3jGi-MV&sig=zi7JVYCBLT8-z42OKfst2XFIK-o&hl=en&sa=X&oi=book_result&resnum=1&ct=resultGood luckPetep.s if you find any more info please get back to methanks Pete.your links did works for me...
Generally with a level. 1/8 inch to the foot. If you have a known level such as the top of the foundation, you could measure from the floor joist and be close enough. For long distances, a surveying transit is used.
Yes, but it is an indirect process requiring two operators- or at least a fixed surveying target on which the surveyor aligns his Stadia wires ( popularily Cross hairs) There are different scales but a base-line of l00 feet and in some cases l00 power is increasingly standard. consulting a table and some number-juggling is needed to get the distance, and more importantly the Vertical rise and Fall ( gradient, up or down) The theodolite is better adapted to this type of surveying, than a mere ( range finder)- which is can be used for- but with some shifting of tactics and technique. The basic tables in the technical manuals assume a base line distance of l00 feet, then there are angles, etc.
Sure, if the cables break, it can fall.
It is a device used for industrial fall protection (Height Safety). Standardconfigurationis a drum containing wire-rope or high strength synthetic webbing. The drum plays out or retracts the cable/webbing as a worker moves through a verticalenvironment. If the worker should "Slip or Fall", the device senses the downwardacceleration and locks up, preventing the fall. Most devices also include some type of braking/energyabsorbingfunction to limit the forces on the human body and anchorage point of the device.Was originally designed and used in the early part of the 20thcenturyfor use in the mines in and around SALA Sweden. Still in use today with great reputation as being the best method of "Fall Arrest".
the advantages of this method was that it is more quick and less calculation needed and the disadvantages, it less accurate compare to the rise and fall method.
The advantages of annuals is that they can be planted annually and it is self sowing. The disadvantage of annuals is that they die in the fall.
advantages: fast easy neat disadvantages: hard to replace if they fall off sometimes hard to put them together can catch yourself or stuff when you put them together
I'm guessing you are doing the same course as me!!This was a help to me: from google books. I hope this link works, if not try searching for comparisson of HOC & R&F methods.http://books.google.com/books?id=hqFcPbmmxC4C&pg=PA131&lpg=PA131&dq=Reducing+levels+by+rise+and+fall+method&source=web&ots=F7x3jGi-MV&sig=zi7JVYCBLT8-z42OKfst2XFIK-o&hl=en&sa=X&oi=book_result&resnum=1&ct=resultGood luckPetep.s if you find any more info please get back to methanks Pete.your links did works for me...
advantages: - resists compression forces - strong Disadvantages - Expensive to build - bulky and takes up space All I can think of!
The advantages are that students are learning more material in order to be better prepared and more educated. Disadvantages are that there is more material to cover in the same amount of time and students may fall behind.
advantages: fast easy neat disadvantages: hard to replace if they fall off sometimes hard to put them together can catch yourself or stuff when you put them together
Advantages of Filipino values include emphasis on close family ties, respect for elders, and strong community support. These values promote unity, cooperation, and social harmony. Disadvantages of Filipino values can include excessive reliance on social connections or "palakasan" culture, tendency towards conformity and reluctance to challenge authority, and struggles with individualism and personal autonomy. These factors can sometimes hinder innovation, personal growth, and social progress.
The advantages are along time ago you could get across the ocean like when they didnt have planes, you could go on a trip and just sail. The disadvantages are you could fall over board and like the titanic you could crash and sink!
Leveling in surveying is important to get an accurate measurement. The rise and fall of the grade will cause the measurements to be off, resulting in an inaccurate measurement of plots of land.
You might fall and break it Weather, heat, cold, humidity, rain, snow and wind will all have possible negative impacts.
Disadvantages of being a detective include exposure to danger, high levels of stress, and working long hours. Advantages include solving complex cases, helping bring justice to victims, and a sense of accomplishment from solving crimes.