new questions:
1. if a 'layer' of a wall assembly contains two materials (ex, studs with insulation in between), do i average the two materials or add them up or what?
2. I'm still not sure if i have the method right for doing this in imperial.. another example:
calculating the...
thank you guys so much for your help!
to make sure i have this..
1. so the first step is to make sure you have the resistance of each material in the wall assembly - you can get that from the conductance of a material, which is its conductivity / thickness in inches. you need the...
this isn't really a problem, I'm trying to understand the table in this link:
http://www.nrc-cnrc.gc.ca/eng/ibp/irc/cbd/building-digest-36.html
basically it shows a wall assembly, it's 70 degrees on the inside, and it gives a list of the materials and their thicknesses in the wall
if...
Hi!
I'm looking for information on how one would size a wide-flange beam knowing the live/dead loads and the span required
i can't seem to find any calculations for this sort of thing!
beam is not composite with floor
hi,
this is a sample question.. I'm having trouble with part a)
google has led me to believe that the equation i need for factored moment resistance is
Mr = fr*As*fy (d - a / 2)
fr is the factor, and i think it's .85 for reinforced steel according to those CSA guides
As is the...
so NASA's saying a satellite's going to come crashing down in a few weeks
http://www.telegraph.co.uk/science/space/8751605/Nasa-warns-of-fresh-risk-from-468m-satellite-falling-from-space.html
"Scientists estimate the debris footprint will be about 500 miles long with a 1-in-3,200 chance...
hi! I'm still confused about this. can someone please let me know where I'm going wrong?
1. the total force is 362kn, and this is spread over the steel and the concrete. so when i add up the force on each of these materials, i expect them to come back to 362kn.
2. using the two equations...
okay, so if you have two materials smushed together, and you want to analyze the properties of it's section, you have to do a few things to pretend that it's just one material. so in my example above, if you have a piece of wood and a piece of steel, and you want to pretend the wood is steel...
do i have this correct:
if you bend something, like a beam, there is a 'neutral plane' within in where the stress & the strain is 0. I'm not sure why this exists because it would seem that if the entire beam is being bent, the entire beam is under stress and strain, but i think that's what...
i googled 'transformed section' and pulled up this gem
http://www.bgstructuralengineering.com/BGSMA/BGSMA_Itr/BGSMA_ITR03.htm
opening statement: "A Moment of Inertia, I, is a section property (i.e. solely depended on cross sectional dimensions) taken about a specific axis."
so it's a property...
Homework Statement
there's a composite beam that's wood on top (150mm along the x axis, 250 along the y) and a little piece of steel along the bottom (150mm along the x, only 10 along the y). Ew is 10,000MPa, Es is 200,000MPa (these are the elastic moduluseseses). the beam is to be analyzed...
oh, and can you give me a real life example of the roller, and the pin on the roller? i can't think of any structures that sit on ball bearings or skateboards.