I just need some general info on the design of retaining walls when you are about to construct a building complex.
133400
List of plausable materials, what the substrate is made up of, bracing materials, and method to be used. Will you need to use a liner to prevent washout?
64363
Basically, achitectural engineers design and guide the construction of buildings, bridges, monuments, etc. to function properly, withstand natural forces, and be asthetically pleasing. Teams of engineers, architects, and support staff  work together to accomplish this task.\nThis is a lofty goal you have set for yourself. If you are detemined enough, I know you can do it. Best wishes and Go Owls!!!
50833
i would say if you aren't wanting to clinb it, use paper mache and balloons to make a wall of "rock".ill i'm bac. mix together glue and water and flour, (i think, look up a paper mache recipe) get news paper (you are gunna need alot) and cut it into 1 inch strips. blow up lots of balloons. (i would say that a good idea would be to put the balloons together with doublesided tape before you begin the next part. make it as big as the wall you want this on.)\ndip the strips of newspaper into the glue mix and begin to layer it onto the balloons. ley dry for 24+ hours. paint as desired.\n\n:D happy "climbing"!
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1a.  Since blasting is going to create instability in the surrounding material for a greater distance, digging will produce the more stable tunnel.  Assume you are depending upon the natural surroundings to support the shaft and not introducing artificial shoring.\n\n2a.  Technically since work is defined as the amount of force required to move a mass through a distance, both will be performing the same amount of work.  Benefit will be gained by the conveyor system which can essentially move material 100% of the time if it can be loaded continuously.  To achieved the same with cranes and trucks, there would have to be enough cranes so that a full load was constantly moving up the shaft.\n\n3.2.  Not sure what a "gigantil fisility" is let alone if one can be constructed of "concreat".  Also the debris being removed from the shaft may not be suitable component of "concreat".  Best option would be to sell it or give it away.  Probably some big holes around that could be filled in.\n\nConstructing a gigantic facility out of concrete might even be an option if you had enough Portland cement and the shaft debris was a suitable aggregate.
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check your county courthouse.  they have legal mubmo jumbo descriptions on property lines for all the residences in the jurisdiction.  you could also try a realtor, but they will charge you.\n\nyou could also build a fence.  i guarantee you that if you build a fence with finding the property line, you'll go a foot or two over.
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Since the volume is 1000, \npi*(r^2)*h = 1000, and so you can express h in terms of r.\n\nCall the cost per sq cm of the wall 1 unit.  Then the cost of the ends is 2 unit per sq cm.  Apply the areas, and get\ncost of wall = 2*pi*r*h  =  (sub in the expression you got above for h in terms of r)\nCost of ends = 2*pi*(r^2) * 2\n\nWrite f(r) for total cost, and as usual differentiate etc to find minimum value of r.  Obviously r and h must both be positive, and that's the only restriction on the domains.  Hope you can do it yourself from here.  You need the exercise and I don't.
499687
You need to determine the depth you need to go down by knowing the frost line in your area. Dig your trench a foot below the frost line, and pour a concrete footer that is at least 12" wide and 18" deep. Put #4 rebar in the footer, 4 bars, 2 at 3" off bottom of footer and 2" in from the outside edges, and 2 more bars at 3" from the top of the footer, above the lower bars. You'll also need some vertical rebar sticking up from the footer on 24" centers to fit into the cells of the block. On the corners, put vertical bar so you have a bar in the corner and the first cell after the corner on each side (3 bar corner).\nBuild your block wall after the concrete footer has cured. If you need to extend the vertical rebar you installed, use wire ties and overlap the joints by a minimum of 6". When the block wall is finished, pour the cells in the block with a grout mixture, or concrete mix with pea gravel.
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I will try. \nNot because it is difficult to understand but difficult to describe. Let us take a three member truss.\n\nA truss must be in equilibrium otherwise it will fall into its three component pieces. Lets assume it is for a roof\n\nFrom its apex to the two walls its load will come from the tiles, and for these the angles and weights are calculated to establish what portion of it goes to which joint.\nThe two portions at the top are examined together to make sure their loads will be stable against each other.\nThe portions at the bottom are being supported by two walls but they have two components each. One wants to rest on the wall while the other is trying to move away from the wall.\nTo keep this from happening we have to introduce our third truss member and make sure it can take the tension required of it.\nNow we know all the points we can show the summation of all the loads and ascertain if they are in compression or tension.\nWhen we have selected or designed each of our truss members we can fix them to keep the whole assembly stable.\nNow the truss it in equilibrium.\nTry it with large match sticks and think of what you are reading.\nIt might help.
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Try the ASCE research library it has some good articles on civil engineering.\nYou will have many options to choose for example you can choose bridges
564463
It could be a keyway to anchor a vertical wall that will be poured later. Was there any vertical rebar sticking out of the concrete in this semicircle?
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dependin on the floor type:\n\nWood use 1 1/2 lag bolts, with flat washers for added support. \n\nConcret use wall anchors you will need a masonery bit to make holes for the anchors\n\ntile: pay a professional, thatway if the tile get broke in the process they will have to replace it, which in the long run will prob be the least headache. i would advise you have them place a rubber gasket down to help keep the tile from being ruined from any possible movement.
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If the soils removed from the excavation aren't too wet then use the same soils. \n Why do you have post tension cables on a slab on grade design?\n If you are trying to bring the subgrade level across the whole floor area to minimize the purchase of extra concrete ,then sand would prob. be the way to go.
138666
Buy this book:\n"The SAS survival Manual"\n\nYOu will learn to build structures from debris, rocks, etc. Some pretty cool structures in there as well as some other useful info.
269429
the design depends on the span, as well as how concentrated that 140 lb will be.  Also, there are many other variables that have to be considered such as height and roof slope
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No amount of engineering can as yet stop a fault from moving. A house, skyscraper, dam, nuclear power plant built on a fault can be destroyed in an instant.\nJoints can not be grouted closed or cemented over, especially if you are building a levee or a dam. Mainly because it is so difficult to map the full extent of the joints.\nFolds can cause variation in the depth and hardness of solid rock.\nUnconformity's are simply that. Unconformity's, a beak in the uniformity of the soil or rock thus affecting the safe placement of support structures and thus the future stability of the building.
179183
You can use products like Autocad. It builds floor plans pretty well. But thats for advanced people.\n\nBBut you can download a free tool called SmartDraw. VERY NICE... \n\nTake a look at it, the free link is below
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To be honest I believe that the first thing you need to do is hire an architect anyway.  They know what steps you need to take and can ensure that the plan you have selected is correct for your needs and meets local ordinances.  Also, in order to get a loan you are probably going to need work done by an architect, and, depending on the home site, a geotechnical engineer.\n\nYMMV, but this is true in my locale.\n\nFull disclosure - I am a civil engineer working in the construction business.