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Nairaland Forum / Nairaland / General / Education / Thread For Structural Engineering Students. (6564 Views)
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Re: Thread For Structural Engineering Students. by RobinHez(m): 9:12pm On Dec 01, 2015 |
Help! How do I differentiate this expression? ![]() 5exp(-0.25t)cos(pi/2)t |
Re: Thread For Structural Engineering Students. by Adek15(m): 12:04pm On Dec 02, 2015 |
RobinHez:Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including works like roads, bridges, canals, dams, and buildings. Civil Engineering Civil Engineering is considered as one of the oldest fields in engineering. Its history dates back to when people started building a shelter for themselves. This engineering field is offered in universities as a first degree course and includes disciplines such as transportation engineering, Geotechnical engineering, environmental engineering and structural engineering. Structural Engineering Structural engineering involves the analysis, design, construction and maintenance of structures that reinforce or counteract loads, such as skyscrapers, dams and bridges. This engineering field is offered in universities as both a subject under civil engineering and a specialization that result in a master's degree or a doctorate. The Difference between Civil Engineering and Structural Engineering Although they may belong to the same field of engineering, they differ in several aspects. For example, civil engineering focuses more attention in design elements while structural engineering is more concern on inspecting materials to be used for the construction. They ensure that the materials being used for construction can support the design of the structure. To sum it up, civil engineering is a broad subject which covers structural engineering. It’s a first degree course offered in universities which results in a bachelor degree. On the other hand, structural engineering is a subject under civil engineering and is taught to students taking up the course. However, it is also a specialization which leads to a master's degree or a doctorate. In reality, their difference and similarities is not that important, the important thing is that they are both crucial knowledge needed by the construction industry. Engineering firms, such as Godfrey-Hoffman & Hodge in Connecticut, provide both civil engineering and structural engineering services to customers because they understand that they are both essential in any construction work or development project. |
Re: Thread For Structural Engineering Students. by Adek15(m): 12:11pm On Dec 02, 2015 |
Politicowizard:I disagree with the last statement sir/ma. I'm currently doing my internship in a construction company and we are on a building project currently, the boss is the engineer. Same thing too with my former I.T place. |
Re: Thread For Structural Engineering Students. by RobinHez(m): 4:27pm On Dec 02, 2015 |
Adek15: I've seen it b4 ![]() Thanks sha.. ![]() |
Re: Thread For Structural Engineering Students. by MhizFa8(f): 4:50pm On Dec 02, 2015 |
RobinHez:it's been long I did this stuff, but I'll just try. okay here we go, if we're differentiating with respect to 'x' then we use the PRODUCT RULE dy/dx= dy/du × du/dx after differentiating each term singly, we have dy/dx = [5exp(-0.25)x-sin(pi/2)t × pi/2] + [5exp(0.25t)× 0.25xcos(pi/2)t] right? |
Re: Thread For Structural Engineering Students. by Adek15(m): 6:08pm On Dec 02, 2015 |
RobinHez:you are welcome |
Re: Thread For Structural Engineering Students. by RobinHez(m): 7:18pm On Dec 02, 2015 |
MhizFa8: Emm...i dunno sha! But how did u go abt it? That's what I wanna see...or will u show me 2morow? |
Re: Thread For Structural Engineering Students. by MhizFa8(f): 8:12pm On Dec 02, 2015 |
RobinHez:Yeah I wud shw u wen m in ur Lt |
Re: Thread For Structural Engineering Students. by Babice(f): 9:42pm On Dec 02, 2015 |
. |
Re: Thread For Structural Engineering Students. by RobinHez(m): 9:53pm On Dec 02, 2015 |
MhizFa8:Great. |
Re: Thread For Structural Engineering Students. by RobinHez(m): 9:54pm On Dec 02, 2015 |
Babice:Space booking not allowed ![]() |
Re: Thread For Structural Engineering Students. by Babice(f): 9:57pm On Dec 02, 2015 |
RobinHez:k,i withdraw,i didnt even meet u 2ruout my stay in benin |
Re: Thread For Structural Engineering Students. by RobinHez(m): 12:13am On Dec 03, 2015 |
Babice:U were in benin? ![]() U didn't look 4 me na ![]() |
Re: Thread For Structural Engineering Students. by Babice(f): 7:59am On Dec 03, 2015 |
RobinHez:i tried to,i asked supernover to describe u for me but he was just joking with me,i met ebayray,esebosun,nolio,supernover and faith only |
Re: Thread For Structural Engineering Students. by Nobody: 7:05pm On Dec 06, 2015 |
RobinHez:Even though I'm not a structural engineer . . . ![]() It's not . . . I don't think it's possible or mathematically correct to differentiate an expression. since calculus is not algebra. the expression needs to be some sort of function. The one given here is one related to time t. so, I'm guessing this is a distance function. x(t). hence, the correct form would be x(t) = 5e-0.25t.cos(π/2)t we can then differentiate x with respect to t. which means, to find the rate of change of x as t progresses or regresses. for this we use the product rule since there are to distinct functions there. set u = 5e-0.25t set v = cos(π/2)t then, from the product rule, x'(t) = dx/dt = u.dv/dt + v.du/dt dv/dt = -(π/2)sin(π/2)t du/dt = - 20e-o.25t . . . performing a simple substitution, you may arrive at -(5π/2)e-0.25tsin (π/2)t - 20e-0.25tcos (π/2)t and you would be done. sir. ![]() 1 Like |
Re: Thread For Structural Engineering Students. by RobinHez(m): 7:24pm On Dec 06, 2015 |
Teempakguy: Thanks ![]() |
Re: Thread For Structural Engineering Students. by RobinHez(m): 11:02am On Dec 09, 2015 |
Teempakguy: Er...after debating on this for a while and with consultation from other ... ![]() I'm afraid to tell u, this is wrong... ![]() Crosscheck wat u did. |
Re: Thread For Structural Engineering Students. by Nobody: 11:47am On Dec 09, 2015 |
RobinHez:If i did something wrong, don't hesitate to inform me. we're all here to learn. meanwhile, I don't see anything wrong with what i did. perhaps you could try bringing out e-0.25 as a common factor along with with the minus sign. but i didn't think i needed to do that since it wasn't asked. I might add, i made a mistake with the exponetial factor. it should be 1.25. not 20. |
Re: Thread For Structural Engineering Students. by RobinHez(m): 5:32pm On Dec 09, 2015 |
Teempakguy: U obviously integrated there... ![]() |
Re: Thread For Structural Engineering Students. by Nobody: 8:32pm On Dec 09, 2015 |
RobinHez: ![]() ![]() ![]() Still my most annoying mistakes in mathematics. on one occasion, i was corrected by a fourteen year old girl. ![]() |
Re: Thread For Structural Engineering Students. by RobinHez(m): 9:06pm On Dec 09, 2015 |
Teempakguy: Na...its one of those things... Just be careful next time ![]() |
Re: Thread For Structural Engineering Students. by RobinHez(m): 8:14am On Dec 12, 2015 |
What's up guys? How do we move this thread's ministry?? .. |
Re: Thread For Structural Engineering Students. by Nobody: 8:29am On Dec 22, 2015 |
RobinHez:RobinHez am also a structural engineer in federal university of benin 100l i hav been reading ur post for a while Dnt just want say anything but i lov to know one on one maybe next year sha |
Re: Thread For Structural Engineering Students. by RobinHez(m): 8:46am On Dec 22, 2015 |
SEUNTOHBRUTAL:Wow...u meant u're in that 1000lt with me? ![]() Ok...no p. Mr silent reader ![]() Anyways, how has it been since we resumed na? |
Re: Thread For Structural Engineering Students. by Nobody: 1:23pm On Dec 22, 2015 |
RobinHez:clearance stress and all does chem113 dat use to dictate his note every single time his in class qnd phy113 also dat wil tel u to go and read chapter 4 on ur own and many ordas dey hav nt been dat easy sha but t part of it |
Re: Thread For Structural Engineering Students. by RobinHez(m): 8:08pm On Dec 22, 2015 |
SEUNTOHBRUTAL: Lol those 2 lecturers are my most annoying. But its been fun all through sha... U have travelled home? |
Re: Thread For Structural Engineering Students. by Nobody: 10:45pm On Dec 23, 2015 |
RobinHez:Yes i hav and u |
Re: Thread For Structural Engineering Students. by Porthos: 11:50pm On Dec 29, 2015 |
RobinHez:lol…… comedian Hey robinhood or whatever your name is, the way you talk about structural engineer like u av been brain washed. Wait! Did u fill it yourself during jamb or uniben tucked u in cos if u are in 100L, ur set is the 2nd set to be admitted through utme/pume but 3rd set in uniben currently offering ste as bsc i.e your 1st set in the history of uniben is in year4 as we speak. Before I proceed, I am in uniben , 300L, civil eng. Civil engineering can never be described the way you talk of it. It is wide field of study encompassing structural, water, highway, geotechnics, environment etc. Structural is just one of the many branches of civil & to think of likening civil to someone moulding block only shows how shallow a supposed structural engineer could think. It is true that both works hand-in-hand which one cannot overlook but do you know structural is not suppose to evn be for jambites? It is a very demanding task & should be for masters student who has finished civil engineering & not some who are still battling with phy113 & mth112.... One thing you should know is that u guys will get to pick a specific area of structure(say steel str, timber str etc) to specialize in & datz ur disadvantage but being a civil, u can perform as a str specialist in all areas of str whether steel, timber etc..... Oh, you don't know? Ask those higher in uniben & they will tell you civil is preferrable(no sentiments attached). It doesn't evn make sense for a "part" to be better than the "whole." Civil houses you... little wonder why we all use civil dept, h.o.d etc. See civil is evil & remains there... no need to argue over trifles. Str is good but, I tell you civil is better. You know why? I can be you ( a str engr) one day, but you can NEVER be me (a civil engr). You might not understand now bro, as you get up the ladder things will start getting clearer, just like DSTV. Besides, what's your name? |
Re: Thread For Structural Engineering Students. by RobinHez(m): 8:08pm On Jan 01, 2016 |
SEUNTOHBRUTAL:No I didn't. |
Re: Thread For Structural Engineering Students. by RobinHez(m): 8:09pm On Jan 01, 2016 |
Porthos:Sorry. |
Re: Thread For Structural Engineering Students. by GodswillAJudins(m): 10:28pm On Jan 01, 2016 |
A metalurgical and materials engineering fresher, futa, thinking of changing to Civil, but mhen nearly all the unis even the polys in nigeria offer the course. I'm afraid of over saturation of the degree in nigeria. |
Re: Thread For Structural Engineering Students. by RobinHez(m): 10:45pm On Jan 01, 2016 |
GodswillAJudins: Know what you want and go for it. There will always be competition but your uniqueness should make you stand out. ![]() |
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