Jump to content
Structural Engineering Forum Of Pakistan


  • Content count

  • Joined

  • Last visited

  • Days Won


EngrJunaid last won the day on March 5

EngrJunaid had the most liked content!


About EngrJunaid

  • Rank

Profile Information

  • Gender
  • Location
  • University
    UET Lahore
  • Employer
    Peshawar HealthCare Pvt ltd
  • Interests
    Design of Structures

Recent Profile Visitors

866 profile views
  1. EngrJunaid

    Steps in slab

    Dear Irfan, see the attach photo, I hope this will be the best structure scheme for your plan.
  2. Yes i got your first reply was about steel structure and the document you share is very detailed and helpful. There will be 3 Machines each of weight 12 ton on first floor level. Till now i didn't get full detail about the machine vibrating frequency and other operational data from the client.
  3. Thank you @Ayesha for your kind response. This will be Reinforced concrete building. I am worry about the effect of machine vibrations on floor Slab and fatigue stresses caused by the machinery. My question is how to consider the machine vibrations in design of RC Structures.
  4. AoA, Hope you all will be fine and in good health. What factors, codes and limitations should be kept in mind while designing a two story (Ground+1) industrial RC structure. There are 3 machines (12-ton weight each) on first floor and about 120 psf is the area load. Thanks
  5. EngrJunaid

    ETABS 9.7.4 Runtime Error Message

    Sir the simplest & easiest way of finding the area by its unique name is ETABS v13. Open your model in ETABS v13, go to Select ----> Labels -----> Shell Unique Name ----> enter the name of the required area.
  6. EngrJunaid

    ETABS 9.7.4 Runtime Error Message

    Dear Sir, The option of selection any element by its UNIQUE NAME is available in ETABS v13 but unfortunately we don't have this selection option in ETABS v9. Display the meshing from set building view option and check the irrigular meshed area by right clicking on them for the effected area. All the WARNINGS are shown in the last Analysis Log with the global co-ordinates of the effected element. From those co-ordinates the area creating problem can be easily found. Thanks
  7. AoA all, Is it mandatory to do column concreting upto the soffit of the beam in a single pour ? What code says about the construction/cold joint location in column ? Majority of the contractors are pouring the column concrete upto the soffit of the beam (full height of the column), some contractors leave the column height about 9" to 12" below the beam level and then fill this 9" to 12" column height with the beams & slab concreting. On one site column concreting was stopped at the mid height and the remaining half was filled on the next day. Thanks
  8. EngrJunaid

    Expert opinion on M.Sc. research Topic selection

    @Ayesha As we are using half scaled Model in our experiment so the objective of this similitude study is to determine a set of principles,correlation and conditions upon which our scaled model can be related to the prototype for predicting prototype performance.
  9. EngrJunaid

    Expert opinion on M.Sc. research Topic selection

    In order to study the effect/performance of infill walls we are providing infill walls in our half scaled 2-story RC Frame model which we will be testing on 6DOF Shake Table here in Earthquake Engineering Center, UET Peshawar...
  10. AoA , I am going to start my M.Sc. research on "Similitude study of scaled 3D RC Frame for seismic testing on 6DOF Shake Table". Need your expert opinion on this topic. It will be of great help if anyone on this forum have work on Similitude Study and share their experience,relevant research papers etc Thanks
  11. (1). Structure Aspect Ratios The Horizontal/plan aspect ratio (Length to Width ratio) of the side block is 160/18=8.8 While its vertical/slenderness ratio (height to width ratio) is 60/18=3.33 I didn't come across any code limitations regarding these ratios But an indian research paper "Effect of Aspect Ratio & Plan Configurations on Seismic Performance of Multistoreyed Regular R.C.C. Buildings: An Evaluation by Static Analysis" concludes that, (a) The buildings with Horizontal Aspect Ratios 4 or less than 4, the seismic performance is reasonable. Above this, the worse effects of excessive forces, storey drift and displacement values may be obtained. Hence they should be discarded due to their unsatisfactory, weaker and unreasonable performances on the bases of above seismic parameters, which can cause detrimental and disastrous effects or otherwise be treated with the enough earthquake resistant elements. (b) The buildings with Vertical Aspect Ratios less than 4, the seismic performance is reasonable. Above this, the worse effects of excessive overturning, storey drift and displacement, period of vibration, etc. values may cause detrimental and disastrous effects to the buildings. Hence slender building configuration, as far as possible, should not be chosen, or otherwise be provided with the adequate earthquake resistant solutions. (2). Flexible Tower on Rigid podium UBC-97 Section 1629.8.3 item 4 says "Structures having a flexible upper portion supported on a rigid lower portion where both portions of the structure considered separately can be classified as being regular, the average story stiffness of the lower portion is at least 10 times the average story stiffness of the upper portion and the period of the entire structure is not greater than 1.1 times the period of the upper portion considered as a separate structure fixed at the base." And UBC-97 Section 1630.4.2 Item 2 says 2. The following two-stage static analysis procedures may be used for structures conforming to Section 1629.8.3, Item 4. 2.1 The flexible upper portion shall be designed as a separate structure, supported laterally by the rigid lower portion, using the appropriate values of R and ρ. 2.2 The rigid lower portion shall be designed as a separate structure using the appropriate values of R and rho. The reactions from the upper portion shall be those determined from the analysis of the upper portion amplified by the ratio of the (R/ρ ) of the upper portion over (R/ρ ) of the lower portion.
  12. EngrJunaid

    Applying triangular load on plates/shells in ETABS or SAP200

    W.Salam, There is no option for the Triangular loading in ETABS. But in SAP2000 you can use the JOINT PATTERN option for the application of Triangular Loading...
  13. EngrJunaid

    RCC Design Without Modifiers

    See the Attached self explanatory picture.

Important Information

By using this site, you agree to our Terms of Use and Guidelines.