Concrete structure we plan to build in that part of world is basically constructed on foundation and columns - concrete, blocks or both; roof - concrete or tiles over roof framing. We have to follow EU standards.
Wall is to be either adobe bricks or cement blocks, and we were told to purchase...
Thank you all for assistance,
Sorry I am not allowed to reveal the exact locations of construction, except a place four hours of driving from Juba, Sudan, where the road is only open four months a year.
As I were told, 42.5N cement were used in several places and has to be imported...
Hi, Miecz,
Thank you for your help. You won't believe how much a cubic yard of concrete would cost in a certain place in Africa - it is about $400/cy concrete material only, not including mixer (if we have to use it) and labor cost)
I were told by a friend of mine to use 1:2:4:0.5 for 3000psi...
Dick, thank you for your response. It is ten fold challenges than you can imange. Aggregate is just one, where to get cements and cent is another one, mixer, molds, quality, transportation, security, lodging, and many others have to be tackled too.
I am helping an organization building schools...
I am doing estimating for projects in rural foreign countries where, read-mixed concrete is not available, and they have to either hand mix or use portal concrete mixer.
Can anyone tell me how to mix cement, sand, gravel, water, etc. by weight, to make 3,000 psi, 22.5 MPa?
Thank you for your...
Dick, thank you, you're right it can be because of contracting method.
One job, completed by our firm six years ago, as I tracked it out, was on design-built basis, had super-p and pearock mix on entire tower 54 stories. I found out that the Owner, A/E and concrete contractor agreed to do that.
I posted similar thread at Stuctural Engineering other topics site, thread507-202506.
If ACI doesn't has any super-p requirements, do you kow any rule of thumb from concrete engineering points of view?
So far all I found out is to use super-p on 10,000psi or higher strength, on shearwall and/or...
Thank you all, so far the recommendations I got from structural engineers about the use of super-p are
1. highrise with 10,000psi or higher strength of concrete in shearwall and/or col (with pearock, set retarder, etc.)
2. if developers have no objection, use pearock and super-p everywhere...
I am a structural estimator and have priced many higrise concrete structures from 20 stories up to 50+ stories and just run into a debate of Super-P use.
After spent time digging out these old project data, I found out that every project is different in specifying super-p, even the same...
