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  1. normm

    Sizing a Chequered Plate --- Pounders Equation

    I am trying to size up a chequered plate cover over an opening to support udl and point / patch load that can be placed anywhere. In the UK I get safe working load capacity table from SCI steel construction Institute Blue Book which gives safe load table for udl only. The table is based on...
  2. normm

    Learning Exel VBA

    I am trying to learn and practise VBA coding. I am absolute beginner. I find most references and books written on this subject are written with financial people in mind and soon drop me in subjects like Pivot table etc which are not of my immediate interest. So I have given myself a very simple...
  3. normm

    Wind Moment Connection Portals

    I am getting some calculations to check for portal frames with 'Wind moment Connection'. These are single storey portals spans about 6m. The beams are being designed as simply supported. The moment at beam-column connection is being taken as zero for dead and live load, but only wind load moment...
  4. normm

    Help---- Engineering Maths

    I have just started reading a bit about Fourier Series. I have been told this series has applications in Structural Engineering problems like Beam on Elastic Foundation, Dynamics, Buckling etc. All I have learnt so far is that by Fourier series you can break up a complicated periodic function...
  5. normm

    Multi-storey masonry construction

    The requirements for new-build masonry construction in the UK for 5 or more storeys were laid out in BS 5628-1 Clause 37.1 Table 12 etc. These gave requirements for horizontal and vertical ties, key elements etc. But what is the situation in an existing multi-storey masonry construction which...
  6. normm

    Grinding of Fillet Weld

    Strength of fillet weld is calculated based on throat thickness x weld strength. Most works specifications mention that visible parts of the weld runs to be grinded without giving much detail. On a recent site visit I noticed that the weld has been grinded almost flush as shown in the attached...
  7. normm

    Intermediate Stiffeners in Plate Girders

    In the UK the intermediate stiffeners in plate girders are welded to the top flange and web of girders but not connected to the bottom flange. A gap is left between the bottom flange and the end of stiffener; as the sketch shows. This details is followed no matter if the deck is at the top or...
  8. normm

    Expressing Time as a number in Excel

    I have a simple problem : In Excel in cell A2 in want to write a date say Mar 2015. In Cell B2 I want to write another date say Dec 2010. In Cell C2 I want to write a formula that will give the difference ( A2 - B2) ie the difference in time in Years ie a number like 4.2. I want the date in...
  9. normm

    Macro for A New Workbook to collect data from several otherWorkbooks

    I am fairly new to VBA and have a simple problem: I have a Excel file(Workbook 1) where in Worksheet 1 I have data stored in Range A1:K20. The summation of the data is stored in Row 30. ie Rows 21 to 29 are blank. I have another Excel File (Workbook 2) where the data is stored in Range...
  10. normm

    Learning SACS from Manuals / Tutorials / Courses

    I am trying to develop some experience in using offshore design-analysis program SACS from Bentley. I wish to learn about wave and wind load generation, modelling, fatigue analysis, Code check etc by reading manuals, tutorials, worked examples, video, attending courses etc. But finding it very...
  11. normm

    Effective Length of Beams

    Although this problem has been discussed before, I will much appreciate your response to the attached example. The associated diagram shows 2 pairs of internal secondary beams 420 mm deeep in a roof layout. The columns below are braced in both directions. The right-hand pair of beams are...
  12. normm

    Applying a patch load on a grillage model

    I am starting a Staad grillage model that will have lines of main and secondary beams but no slabs ie the there will be voids in the area bounded by the beams. For analysis I intend to put some patch loads in that voided space and wish to know if the program will transmit such patch loads to the...
  13. normm

    Problem with Steel design with a user-defined section

    I wonder if anyone can see any mistake in the way I have defined the Member Property of a Tee section in the attached file. It is a short trial analysis model file. The analysis part runs fine. But the design and stress check part does not run saying there is a mistake in the member property...
  14. normm

    Help with VBA

    I have been using Excel for over 8 years and consider myself proficient in using mathematical functions, formulas, graphs,Vlookup etc. But now I am trying to grow more into User defined funtions, Macro, VBA etc. I am looking for some refernces or books where these are discussed in Civil /...
  15. normm

    Retaining Wall Stability Check Against Sliding

    I was talking with someone who was coomenting on the sliding check for a soil retaining wall with water table part height of the retaind soil. His opinion is that since there is upward water pressure underneath the base, this will reduce the effective weight of the wall. And the frictional...
  16. normm

    Load Dispersion

    I am having a discussion with some friends as to what is the correct method of dispersing a point or line load effects on to structural slab member. The opinions expressed are as follows : 1. You can distribute the load at 45 degrees through floor finish only to the top surface of the slab. 2...
  17. normm

    Econmic Design?

    I find that designs produced by Civil / Structural Engineers are more and more being scrutinised and commented on by project engineers / value engineers etc. I give an example below: In structures under light axial load and high uni-directional moment like retaining walls where piling is...
  18. normm

    Casting Concrete

    I will appreciate if you can give your views on the following 2 questions : 1. I am planning to construct a shallow reinforced concrete base only about 2m from a busy railroad track. The base will be cast at night and rail traffic will resume after about 2 hours carrying about 12 trains per...
  19. normm

    FE Worked Examples

    I have access to a FE program called Lusas. I am used to it and like it but its manuals have rather limited worked examples. I wish to apply Lusas to some Civil/Structural problems (mainly non-linear problems like buckling, non-linear materials and support conditions, dynamic problems etc.)...
  20. normm

    E values for masonry wall panels under lateral wind load

    Can anyone suggest how to calculate bending moments in a non-standard brickwork panel wall under lateral loading. The code like BS 5628 give tables for standard cases and suggest that for non-standard cases with window openings Finite Element method can be used. As a panel is orthotropic ie have...

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