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We have the force $ (\sqrt 2/2)* F \ $ acting horizontally to the right at point H and horizontally to the left at point E , both horizontal components of the cord tension, F making a moment of $ \ M=(\sqrt 2/2)* F*a .$ Now we equate sum of moments about A to zero and find reaction at B. $$ \Sigma M_A =0 \quad= \frac{(\sqrt 2/2)* F*a + F*2a}{2a} +R_B = ...


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NCBCLL is IBC Code for Non Concurrent Bottom Chord Live Load, used for uninhabitable/inhabitable attic space live loads @ 10/20 PSF through Alpine ITW


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You can take have to use temperature dependent material properties for the e-modulus and Poisson's ratio. This scan be achieved with ´MPTEMP' followed by ´MPDATA´. Linear interpolation is used by the software. Example with fictious values: MPTEMP,1, 20, 100, 150, 400 MPDATA,EX,1,, 204e9, 197e9, 193e9, 178e9 There is also the option to input a ...


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A quick check on the net shows the 5052 has a lower strength than the 6061 , mostly caused by heat-treatment. Tensile is 25% lower, yield is 30 % lower ; nominal properties.


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Look at pairs of glasses as they are wire holding a lens.


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Put a ring around the top 1/3 of the object then have 4 guy wires coming down to two bars fixed to the crossbar, one on each side.


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Let me raise an example: By Ultimate Capacity, my slab thickness required is 80mm for a particular span X meter. Which my slab would not fail to carry the load into the beam and column. By Serviceability Capacity, my slab thickness required is 150mm for a particular span x meter. Which the deflection may not exceed the desired displacement. So, one hand I ...


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Practically, the geologist will do boring at different location at the site, we call it Bore Hole. Based on their preliminary assessment, they will decide the depth of boring. Or by experience or trial & error. Whatever it is, the main thing we are looking for is hard layer. For it to be hard rock or hard dense sand layer. Basically we can get a soil ...


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By hand? I believe you have to use matrixes to include all the formulae by superposition, then to solve the matrixes using our friendly Mathematics by hand instead of computer.


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The answer to this is that, engineers have to come out with different idea / creative solution to increase the span of the slab. I believe there are many other solutions in other places that not mentioned in the following: 1.) Cold-form steel trusses 2.) Post/Pre-tensioning concrete structure 3.) Arc shape structures support with tensioning rod. All ...


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Probability of Event Exceedance of A Certain Year, lets say N years; is the occurrence of events gained from statistic for a certain country or area for a certain event. Which in this case is flooding. And the Annual maximum daily flow was recorded in that particular year of occurrence. In the topic of civil engineering particularly, as we discuss, we may ...


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In fact the twist angle is assumed to be constant from the center of the cylinder out to its circumference. If we call the twist caused strain at any distance r from the center $ds, \ then\ \theta= \frac{ds}{r} \quad and \ ds=\theta*r$ Shear is $t=G*\epsilon= G*\theta*r \quad \text{or y in your equation}= G*yr$


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First, picture two disks, placed parallel, and close together. Draw a line through the center of each disk. Line up the lines. Are all the points on the lines the same distance apart? Now rotate one disk by a few degrees. Are all points on the lines the same distance apart? Have the lines drawn further apart at the center of the disks, or at the edges? ...


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Ice has a volume about 10% bigger than water, so an inner tube is too small to do anything - unless it floats, see below. Containers burst when the ice forms a plug and the trapped water then freezes and expands. One way to avoid that is float a beach ball in the tank. When the top of the water freezes over, the pressure beneath it will crack the ice round ...


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If you leave roughly 10% on top empty it should be okay. Ice increases in volume by approximately 8%. Leaving a half deflated bike tube will hardly help. Because ice formation starts from surface of the tank and by the time it gets to the tube it is too late. Most of the plastic containers can flex a bit to accommodate icing if you leave the top empty. But ...


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I think this is the annual flood chart. The USGS earthquake hazard and probability maps are colored and have contour lines. Exceedance probability in Y years. (This part is mathematical) The expected number, n of exceedances in Y years is n = Y times r, the annual rate of exceedance. Assumption: The rate of earthquake occurrence in time is ...


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