hello,
i am studying beam deflection methods such as double integration or moment area method or conjugate beam method etc right now.
how can we know where the slope is 0 for a simply supported beam, with any distributed or point loads on it.
is the beam slope 0 where moment diagram is...
I was solving an AM problem on PPI exam cafe online . (Question number 59)
Think of a simple mechanism similar to a door knob, fixed to a wall only and free hanging like cantilever, with the part where you hold with your hand in the perpendicular plane. Imagine you are pressing with your finger...
Hello
on All in One latest edition page 384 for PE preparation, the design of strap footings is asked.
In addition to axial loads, the also calculated a moment based on the axial load of one footing times distance to the other footing and borught it as a moment to second footing. and based...
when doing the consolidated undrained test, first we apply the chamber pressure and let the pore pressure develop in the specimen to dissipate, so it drains. and THEN we close the drainage line at the top and bottom and apply axial load, so the name "consolidated undrained". I understand this...
in a question i am solving about triaxial test, it says:
"In a drained triaxial test, a specimen is confined under pressure and axially loaded until failure."
but drained means, we let the specimen to drain, which means it must be unconfined isnt it? why do they say confined? what am i missing...
for a square footing, i know the shape factors are not always the same but i saw one which is very different when i was solving a question for PE preparation. for example, in the formula I have, there are shape factors of 1.3 for c, 1 for q and 0.4 for gamma.
but on a question i saw, i saw...
In a question I am solving it says the following for PE exam Geotech it asks:
A 4 x 4 ft footing is in sand for which the bearing capacity factor is 15. The sand is intended to limit the applied pressure on this footing to a value that will control settlement. What is the modulus?
First of all...
on a pipe network analysis problem, when comparing the heads between the two adjacent points, when writing the energy equation, they took into account only the elevation and pressure heads. why didnt they take velocity head into account?
This is the question In the 13th edition of practice...
In question number 69 of six minute for geotechnical, for PE exam study, it tells us to calculate the skin friction based on Beta Method, and uses cohesion of the soil layers to calculate. no angle of friction between pile and soil is given, the question doesnt talk about it. so it uses the beta...
in question 17-2 of practice problems for the civil engineering pe exam by michael lindendburg, 13th edition, there is a pipe that connects points A and B. it gives pipe length, diameter, pipe material, temperature of water and the flow rate Q. B is 60 feet above Point A. it asks the pressure at...
I was solving a question for PE preparation about piles. it calculates the perimeter of each pile and the the perimeter of a two pile group and since the preimeter of group is bigger, it says no group action reduction is needed.
so does it mean the group action means a reduction with respect...
Hello,
In a question I tried to solve when preparing for PE exam, there is an anchored bulkhead supporting an excavation wall. I can not construct the geometry of the problem in my head.. so i couldnt understand the solution.
The question says, an anchored flexible bulkhead, which is fixed from...
When calculating the active or passive earth pressure at retaining walls, if there is friction between wall and soil, and that friction angle is given , then we use coulomb formula (that long one) even if there is no incination of backfill or wall correct?
if so, in question 76 of six minute...
In six minute solution for geaotechnical, problem 51
you place a very large area of fill on a clay layer of 30' thick. water table is at ground surface at first.
they ask the consolidation settlement of clay due to the loading by the fill surcharge and also they are saying that the water table...
Hello,
I am preparing the civil PE exam in geotech and in the NCEES Geotechnical afternoon sample questions, question 520, for the depth while calculating the D, why do they take 2 feet and not 10, which is (2+8) feet up to the overall ground surface?
for the ones that do not have the book...
Hello
For civil pe preparation, On 6 minute solutions for geotech book, problem 42. why does it say it is normally consolidated and take only primary consolidation into account and not secondary consolidation as well?
it is basically a question that has sand and below the sand there is clay...
Hello,
i am preparing for geotech of PE exam and have a question...
On question 33 of six minute solutions for geotechnical, why do they take the total stress and not effective stress for shear strength calculation, can anyone tell me?
for those who dont have that book, It is a question that...
i will take PE exam in october and thinking about geotech. can you suggest me books to study from? also on ncees exam format they dont list any code references. so we really dont need any? if we do, then what?
Hello
This is my first message to this forum and I hope I am not asking an irrelevant question. If so please direct me to any appropriate location please
I will take the Civil PE exam in October in CT
I am studying the morning sessions but for afternoon I am trying to choose between...
