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Civil Engineering/Questions
| Subject | Date Asked | Expert |
| Regarding construction management | 2/8/2012 | Babak Esmailzadeh Hakimi |
| Q: I have done B.Tech in civil engg. and currently working in metro rail project in execution ... A: Project management is potentially a very rewarding career. It also has a lot and a lot to study ,to ... | ||
| Tank foundation on piles | 2/8/2012 | Arshad Khan |
| Q: I have a steel water tank to be checked.The diameter of the tank is 12m & having a total weight of ... A: I am assuming that the base of the tank is self-supporting, i.e. all the 1200 tonnes will be ... | ||
| Deck Slab - Steel | 2/8/2012 | Arshad Khan |
| Q: Salaam Alaikum Dear Sir, I have a doubt regarding Deck Slab on Steel Deck... I want to know ... A: This depends on whether you use proprietary profiled sheet decking (such as Comflor- see ... | ||
| ETABS | 2/6/2012 | Babak Esmailzadeh Hakimi |
| Q: 1).When analysing structures there are critical loading arrangements to be considered (like all ... A: 1- I don't know PROKON but etabs doesn't design searching critical loading. You must yourself use ... | ||
| lateral load | 2/5/2012 | Babak Esmailzadeh Hakimi |
| Q: 1st step : To model the structure completely and to load it totally according to codes of practice ... A: 1- It means that your frame has to be able to resist about 20% of earthquake loading alone without ... | ||
| ETABS | 2/2/2012 | Babak Esmailzadeh Hakimi |
| Q: First of all I thank you for clearing my confusions over lateral load distribution of a model.(in ... A: 1- Structural design is an art : to use loadings which are not known exactly, in a combination which ... | ||
| about building engineering | 2/1/2012 | Babak Esmailzadeh Hakimi |
| Q: sir,i wanna know something about the building engineering field...can you tell me that how much part ... A: Nuclear reactor is a small part of a nuclear power plant. Several buildings exists in a nuclear ... | ||
| ETABS | 2/1/2012 | Babak Esmailzadeh Hakimi |
| Q: First of all I thank you for clearing my confusions over lateral load distribution of a model.(in ... A: 1- The first method is based on an mixed analytical and experimental method, which takes into ... | ||
| ETABS | 1/31/2012 | Babak Esmailzadeh Hakimi |
| Q: First of all I thank you for clearing my confusions over lateral load distribution of a model.(in ... A: You are welcome. If you apply your wind loading like what happens actually and you arrange carefully ... | ||
| strength of materials | 1/29/2012 | Babak Esmailzadeh Hakimi |
| Q: sir, i want to know the concept of Strain Rosette A: Please take a look at this link: ... | ||
| Reinforce concrete design | 1/28/2012 | Babak Esmailzadeh Hakimi |
| Q: Sir, am finding difficult to carry out design work using architecural or building drawing due to ... A: It is hard to reply such a question , but generally you must be aware of some points: 1- The ... | ||
| Finite element modelling | 1/28/2012 | Babak Esmailzadeh Hakimi |
| Q: What is finite element modelling of a composite deep beam? What are the steps to adopt if one wants ... A: 1- What is a composite deep beam? you mean a mix of reinforced concrete slabs and steel profiles? ... | ||
| lift core foundation | 1/28/2012 | Babak Esmailzadeh Hakimi |
| Q: 1.I am designing pile cap for a lift core of a 8 storied building of 90 feet height.But I am in a ... A: I cant understand why you want a pile system for a lift core, because usually the loading of lifts ... | ||
| test for steel | 1/27/2012 | Babak Esmailzadeh Hakimi |
| Q: i want know about what kind of tests r applied to check steel strength n plz tell me the procedures. A: Hi, There is a wide range of testing each of test is specified for a purpose like: - Chemical Tests ... | ||
| thesis methodology | 1/27/2012 | Babak Esmailzadeh Hakimi |
| Q: sir, i am starting my thesis and i wanna know how to write a thesis methodology of a research ... A: According to my own experiences you can follow the below mentioned trajectory, but you can have your ... | ||
| Stiffness Reduction & Property Modifiers | 1/26/2012 | Arshad Khan |
| Q: as i understand from ACI code, you need reduced stiffness for 3 purposes:- 1) Vertical Deflections ... A: Before asking me a question I would encourage you to please search my past answers, where you would ... | ||
| project help | 1/26/2012 | Babak Esmailzadeh Hakimi |
| Q: Respected Sir, I am in my final sem of my civil engg'.I am interested in doing a project in ... A: It is hard to reply such a question , but generally you must be aware of some points: 1- The ... | ||
| RC DESIGN | 1/26/2012 | Babak Esmailzadeh Hakimi |
| Q: Is it possible to design 50'-00" x 50'-00" (15.24m x 15.24) RC SLAB without intermedite column. ... A: The main feature one has to consider in design of long span slabs and girders is the limitation of ... | ||
| RC DESIGN | 1/25/2012 | Babak Esmailzadeh Hakimi |
| Q: Is it possible to design 50'-00" x 50'-00" (15.24m x 15.24) RC SLAB without intermedite column. ... A: No restriction to have any span in RC slabs. That was an idea, you will have 2 main beams spanning ... | ||
| RC DESIGN | 1/24/2012 | Babak Esmailzadeh Hakimi |
| Q: Is it possible to design 50'-00" x 50'-00" (15.24m x 15.24) RC SLAB without intermedite column. ... A: Hi, nothing is impossible. Sure you can design a 15x15 slab and waffle has been used before ( it is ... | ||
| Civil Engineering beams. | 1/21/2012 | Babak Esmailzadeh Hakimi |
| Q: we built a buildings with cement bricks and iron sheets not concrete slabs. what i want,the size of ... A: With the type of building I see in your picture you can use 25x25 Reinforced Concrete Columns with 4 ... | ||
| Pile top movement | 1/19/2012 | Babak Esmailzadeh Hakimi |
| Q: What is the allowable rate of pile top movement so that load can be increased in static load test? ... A: hi, you will have to deal with an axial (tension) loading. You have to be careful when watching your ... | ||
| structural design using ETABS | 1/19/2012 | Babak Esmailzadeh Hakimi |
| Q: 1) A medium rise building having adequate shear walls in X & Y direction to be modelled using ... A: 1- For foundation design , considering moment and axial load is more conservative than axial load ... | ||
| Earthquake Drift Limits | 1/18/2012 | Arshad Khan |
| Q: IN ASCE - 2005 commentary, the drift combination is defined for WIND as D+0.5L+0.7W (0.7W to reduce ... A: Normally you do not apply the reduction factor in the combo, but look at the output drifts and then ... | ||
| structural design using ETABS | 1/18/2012 | Babak Esmailzadeh Hakimi |
| Q: 1) A medium rise building having adequate shear walls in X & Y direction to be modelled using ... A: 1- While you have at least 2 layers of reinforcement entering inside the foundation, you have a fix ... | ||
| structural design using ETABS | 1/17/2012 | Babak Esmailzadeh Hakimi |
| Q: 1) A medium rise building having adequate shear walls in X & Y direction to be modelled using ... A: This is what I prefer to follow: 1st step : To model the structure completely and to load it ... | ||
| Holes through plinth beams | 1/16/2012 | Arshad Khan |
| Q: in a residential house in the city, suppose to bring drainage pipes and rain water pipes by cutting ... A: This depends on how deep the plinth beams are and what diameter and location of the holes are. If ... | ||
| saw dust as sand in concrete | 1/16/2012 | Babak Esmailzadeh Hakimi |
| Q: I am using sieved saw dust as sand replacement in concrete. i got 8N/mm^2 as 7 day strength for ... A: Concrete admixture is very serious even for moderate range of strength. Saw dust cant replace sand ... | ||
| alignment of RCC columns - lapping | 1/16/2012 | Babak Esmailzadeh Hakimi |
| Q: Sir, My house is in foundation stage. There are 12 RCC colums out of which 3 columns are ... A: Concrete admixture is very serious even for moderate range of strength. Pit sand cant replace sand ... | ||
| 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 ... | ||
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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