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| Subject | Date Asked | Expert |
| Alignment and size of columns, footing size | 1/16/2012 | Babak Esmailzadeh Hakimi |
| Q: In a Basement + Ground + 8 floors residential building (apartmenet) where I have booked a flat, I ... A: As you might guess , this is not a question I can give you prompt and explicit answer. Please take ... | ||
| pile reinforcement | 1/15/2012 | Arshad Khan |
| Q: My question is what is 'spacer bar' and its function in pile cage reinforcement? the design is as ... A: Spacer bar is usally specified where you have 2 or more layers of rebar next to each other and you ... | ||
| structural analysis using ETABS | 1/13/2012 | Babak Esmailzadeh Hakimi |
| Q: What is the purpose of applying diaphragms to slabs . Why this facility is not available in SAP ... A: 1- In the case you dont use a solid diaphragm, loading on each node will be absorbed by the ... | ||
| reinforced concrete column construction related | 1/12/2012 | Babak Esmailzadeh Hakimi |
| Q: I live in Dhaka,Bangladesh in a RC frame building built 1991, 4 storied foundation, 2 story ... A: In the case your waiting reinforcement( for overlap) being lost , you will be obligated to use ... | ||
| structural analysis using ETABS | 1/12/2012 | Babak Esmailzadeh Hakimi |
| Q: What is the purpose of applying diaphragms to slabs . Why this facility is not available in SAP ... A: 1- Gravity center of your story will be regarded as your diaphragm center, because seimic loads ... | ||
| structural analysis using ETABS | 1/10/2012 | Babak Esmailzadeh Hakimi |
| Q: What is the purpose of applying diaphragms to slabs . Why this facility is not available in SAP A: The essential decision to be made when modelling a structure is wether the diphragm in each story ... | ||
| Foundation design | 1/8/2012 | Babak Esmailzadeh Hakimi |
| Q: 1.I want to design piled base foundation for machine which is fixed on the pile cap by 10 anchor ... A: Sorry for delay. You can follow these links http://www.ce-ref.com/pile_cap.htm ... | ||
| project managment | 1/8/2012 | Babak Esmailzadeh Hakimi |
| Q: I want to be a project head for any particular site so what would be better carrier option? ME in ... A: It is very much dependent on your talents and targets, but I think You can reach your goals through ... | ||
| g=9.8 m/s^2 | 1/7/2012 | Babak Esmailzadeh Hakimi |
| Q: Why the value of acceleration due to gravity,g=9.8m/s^2 ? A: This is an experimental value. But I admit that if we would be in another planet like Venus , or ... | ||
| Shear Enhancement | 1/6/2012 | Babak Esmailzadeh Hakimi |
| Q: can you please explain me about Shear Enhancement. actually this situation occurs at column is not ... A: Shear enhancement is not a very popular expression to explain about the critical shear stress in ... | ||
| alignment of RCC columns - lapping | 1/3/2012 | Babak Esmailzadeh Hakimi |
| Q: Sir, My house is in foundation stage. There are 12 RCC colums out of which 3 columns are ... A: Plinth Beams are not load bearing members in normal situations. They provide a basis to transfer ... | ||
| Corrosion protection | 12/30/2011 | Arshad Khan |
| Q: How to protect metal from corrosion ? A: There are many ways this can be done, such as cathodic protection, painting, galvanising, etc, etc. ... | ||
| End of the world. | 12/30/2011 | Babak Esmailzadeh Hakimi |
| Q: December 21, 2012 is the date of end of earth ? A: You know what? Human is a model maker. Human is a resolver. Human models every thing in the world ... | ||
| buiding construction | 12/29/2011 | Babak Esmailzadeh Hakimi |
| Q: sir,i m a civil engineering student of 3rd year i want to know how to calucate the loads on the ... A: Loading on buildings is a very wide feature which must regarded through a systematic approach. For ... | ||
| Characteristic strength concrete (fcu) | 12/28/2011 | Babak Esmailzadeh Hakimi |
| Q: sir, am try to manual design a 30m simply supported pre-stressed concrete bridge, i need know what ... A: No serious limit exists for concrete strength, but you must have reliable source to provide you with ... | ||
| alignment of RCC columns - lapping | 12/28/2011 | Babak Esmailzadeh Hakimi |
| Q: Sir, My house is in foundation stage. There are 12 RCC colums out of which 3 columns are ... A: Intentional and unintentional misalignments of columns are very common in buildings due to ... | ||
| Newton's 1st laws of motion | 12/28/2011 | Babak Esmailzadeh Hakimi |
| Q: If a body is at rest it remains at rest or 'if it is in motion it moves with uniform velocity' until ... A: The Newton laws are conditional. IF the resultants of forces acting on a body remain strictly zero, ... | ||
| 'Lime' is use as building material | 12/27/2011 | Babak Esmailzadeh Hakimi |
| Q: Why 'Lime(Limestone)' is use as building material? It get heated very highly when it come in contact ... A: The broadly used term lime connotes calcium-containing inorganic materials, in which carbonates, ... | ||
| baseplate area expansion | 12/27/2011 | Babak Esmailzadeh Hakimi |
| Q: Good Day! I have one steel mezzanine structure resting on a ground floor slab thickness of 10cm ... A: I need to have your details along with your loading details , to better give my idea, but as a ... | ||
| Cement cracks. | 12/25/2011 | Babak Esmailzadeh Hakimi |
| Q: Why cement get cracks after some period ? A: As a general rule all cracks are due to strain and deformation, in cement and concrete creep due to ... | ||
| Final Year Project | 12/24/2011 | Babak Esmailzadeh Hakimi |
| Q: I'm a final year student and looking for a topic related to steel structures and earthquakes, which ... A: You have a lot of opportunities. You can look for in Internet. The main topics are: Earthquake ... | ||
| Load transfer to beams | 12/24/2011 | Arshad Khan |
| Q: sir, how to calculate the total load transfer to the beam in a structure. A: You work out the self weight of any slabs and beams spanning on to the beams, and the imposed loads ... | ||
| how to model truncated dome by finite element method | 12/22/2011 | Arshad Khan |
| Q: i try to analyze a truncated dome using finite element method but i got some difficulties on how to ... A: If you had browsed my past answers you would have found this, and the earlier description of how to ... | ||
| Flat slab detailing & punching shear | 12/21/2011 | Arshad Khan |
| Q: I have two questions regarding flat slab : 1.In the preparation of drawing for flat slab, i use mesh ... A: 1. Yes, this is acceptable, so long as you ensure proper lap between mesh and additional rebar. You ... | ||
| Wind Loading on Lattice Structure | 12/17/2011 | Arshad Khan |
| Q: I have got a structure to be verified, this structure is equipment support and a lattice structure. ... A: Wind loading on a lattice structure is complicated due to local turbulance, vortices, suction, etc ... | ||
| Design of beam using SAFE | 12/15/2011 | Babak Esmailzadeh Hakimi |
| Q: In the design of a flat slab for a building floors using SAFE, the design results for edge beams as ... A: It is preferred not to use safe as a beam design tool. You can use Etabs to design girders and ... | ||
| Bar bend diameter problem | 12/14/2011 | Arshad Khan |
| Q: In ACI code the standard bar bend radius for #10 bar is 8db. I want to ask what are the consequences ... A: This has two possible implications: 1. The bar could have developed cracks or strain hardening ... | ||
| analysis part | 12/13/2011 | Arshad Khan |
| Q: sir, atleasr u cud just guide about the analysis part, pls. atleast provide me with what i m ... A: You start by working out the loads, as per my earlier Q & A:Sir,I have to submit a minor project on ... | ||
| EMBDEDED CONNECTIOND DETAILS | 12/13/2011 | Arshad Khan |
| Q: can you please mention design examples, book or references for the case below:- I have steel ... A: I presume the W33 is a typo? I do not know of any references, but I would embedd the steel column ... | ||
| Horse shoe tunnel area calculate | 12/10/2011 | Arshad Khan |
| Q: How to calculate horse shoe type tunnel x-sectional area. please tell with example Regards sanjay ... A: If you had browsed my past answers you would have found this: QUOTE The best way to do this is to ... | ||
| WIND LOAD DRIFTS | 12/9/2011 | Arshad Khan |
| Q: I want to inquire about the drift limits in codes. FOr example in UBC-97, drift limits are based on ... A: This is the usual statistical probability used in most codes- for example the acceptance of 28 days ... | ||
| WIND LOAD DRIFTS | 12/8/2011 | Arshad Khan |
| Q: I want to inquire about the drift limits in codes. FOr example in UBC-97, drift limits are based on ... A: Wind drift limits are similar to those for seismic, except that there will be no R factors, so you ... | ||
| UDL v point load on a slab | 12/8/2011 | Arshad Khan |
| Q: Mr Khan In my line of work I often need to know the capacity that a reinforced concrete slab will ... A: Sorry, I had assumed that the slabs were suspended/upper storey. For ground-bearing slabs, the ... | ||
| UDL v point load on a slab | 12/8/2011 | Arshad Khan |
| Q: Mr Khan In my line of work I often need to know the capacity that a reinforced concrete slab will ... A: This very much depends on the relative geometry of the slab/span and whether it is one-way or ... | ||
| Eccentric footing | 12/7/2011 | Arshad Khan |
| Q: If column is not in center of footing net what is the probleam A: In that case you have what is called an "eccentric footing", so that the net pressure below the ... | ||
| design of seismic building | 12/5/2011 | Arshad Khan |
| Q: Assalamualiakum Sir! Plz sir help me regarding a very major problem.. Sir am ... A: Strictly speaking, you should do dynamic amalysis for both options, but if you are running out of ... | ||
| Design of Earthquake building | 12/3/2011 | Babak Esmailzadeh Hakimi |
| Q: Assalamualiakum Sir! Plz sir help me regarding a very major problem.. Sir am ... A: 1- I give you an example. Have you ever analyzed a number like 72 into its primer components? like ... | ||
| about shear | 12/3/2011 | Arshad Khan |
| Q: what is shear? A: For any gravity loading on a beam, the shear is the vertical reaction at the support, or varying ... | ||
| Design of Earthquake building | 12/3/2011 | Babak Esmailzadeh Hakimi |
| Q: Assalamualiakum Sir! Plz sir help me regarding a very major problem.. Sir am ... A: Salamon alaikom va rahmatollah va barakaato It is not satisfactory to use Equivalent Static Method ... | ||
| Raft Foundation | 11/28/2011 | Babak Esmailzadeh Hakimi |
| Q: I'm working on a thesis project "EFFECTIVENESS OF COMPRESSION REINFORCEMENT IN REINFORCED CONCRETE ... A: Salam Aleikom When you lay a mat or raft foundation on the soil , soft soil for example , you will ... | ||
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Civil Engineering
Answers by Expert:
Babak Esmailzadeh Hakimi
Top Expert on this page
Expertise
I can answer questions in Structural Engineering, Earthquake Engineering, Project Management and Project Control topics!
Experience
I am experienced in the area of earthquake engineering in electrical power industry, i.e. Lifeline Earthquake Engineering. My focus has been on structural seismic design of power installations. Recently I have got involved in project management in the category of constructional engineering.
Organizations
Sinam Consulting Engineers Co.
Education/Credentials
Bs degree in Civil Engineering from Ferdowsi University ,1988, Mashhad Iran, Ms degree in Earthquake Engineering, Sharif University of Technology, 1993, Tehran, Iran
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