We are building a new house and we are trying to find some good spray foam insulation for about 4000 square footWe are new to this and not really sure what to look for, meaning what is good and worth paying for or what is crappy and not worth spending are money on.If yall could send me some advice and/or some good websites to go to that would be great.Thanks.
from the concern, i could think of that the rope is twirled with an angular velocity such that the centrifugal rigidity (the fictional rigidity) merely balances the burden of the rock whilst on the authenticthis implies the burden of the rock one million.5kg x 9.81m/s^2 equals the centrugal rigidityhence the angular acceleration is 9.81mg/s^2so on the backside, the rock will journey the acceleration by way of gravity 9.81m/s^2 plus an analogous angular acceleration fee 9.81m/s^2 hence the stress on the rope 2 x one million.5kg x 9.81m/s^2 is two times the burden of the rock on the backside.
two equations ΣMa 0 and ΣMb 0 FBD has four forces: W (weight of bar, equal to m1g acting at L/2, downwards) Fo (force of object, equal to m2g) Ta (acting in unknown direction) Tb (acting in unknown direction) ΣMa 0 (gets you Tb) +Tb(d) -W((L/2)-d)) -Fo(x-d) 0 ΣMb 0 (gets you Ta) +Ta(d) -W(L/2) -Fo(x) 0
Point of interest: Termites eat styrofoam I found this out school (2nd year apprenticeship for carpentry)Where I live the cold kills them so it isn't an issue but it is something to be consideredThat's why certain parts of the country do not use Insulated Concrete Forms or Structural Insulated PanelsIf you find that you aren't able to use the foams in your area then I would recommend either the green insulation (made from rockwool) or the white insulation from Johns Manville both of which are Formaldehyde-free (formaldehyde being a known carcinogen)The green insulation has the higher R-values (as well it provides better sound reduction, fire resistance) As for the spray foams my wife and I chose Spray Jones to do our basement mainly because the Bio-alternative spray foam was Soy based and I'm allergic to soy.
