2nd Quarterly Report

Given my First Quarterly Report:

Structure of my next quarterly report will be accordingly: From August, September, October. (The deadline for this report will be around end of October).

The Structure will be:

1) Intro ( based on last quarterly report) the following was worked on.

Review of Staff: worked with Havier + Dilesh --> had meeting with briefing that I am working for them.

 

2) Any outside things I have done i) Toastmaster ii) IStructE networking with the Young Professionals 3) Find out other events to schedule in the next 2 -3  months as needed.

3) Review of Performance goals: My current performance is not quite up to standard and several areas for development in proactiveness at work: ( Also get a careers book to faking it in terms of confidence - copy Funmi in here approach to work & life).

Suggested tip: - 1) Review Technical Subjects thoroughly: Know technical,( Section Properties, Pin Jointed Truss, Beam Theories, Load Path & Pad Foundation) Core topics to know.

In addition knowing my Masonry Design Work as I have done this, Knowing Steel Detailers Guide, Knowing Connection Details and General short cuts to doing Calcs and having templates and procedures for work that needs to be done will be crucial.

Know Buckling theory very well and Class 1 - 4 by heart as this is something that is constantly drilled by Charles. 

Know the Codes: BS EN 1993 -1-1, Know BS for walkaways, BD37 /01 - Bridge Load Designs, anyothers have a general feel for all Eurocodes.

Finally, knowing the software and also knowing that the software Tedds does the Calcs, so one time saving is to know how to use TEdds solve to model design and get out the necessary values in order to do the design.

Good Points: Quality of Written Communication and Report Writing is high - perhaps there is a need to shift career towards this side of things ( possible switch to pre planning ensure I am doing reports and need to ask to do reports as needed as per the work as well as structural work to complement my learning. ( Play the work place to my advantage).

Research ways to capitalise on the workplace as an introvert + play Huma's game of ruthlessness on Ngoc in particular/ hajra etc as they other grads and the competition can play out on them to push them down and promote oneself - although they are good candidates it doesn't make sense to help them think of ways to drag them down and stab them in the  back ie dont give any hints, in a sly way.

Listing Jobs worked on + Diagram for job:

1) CrossRail  - Havier

Almost Random assortment of tasks: - Assisting as needed. + design codes to read here -- Summarise as needed. 

2) Rail Project to be done on this project - Dilesh 

South Kensington Slab - Strengthening of Slab by placing beams 

1) Weight is limiting factor of beams 

2) Joists worn away have lost strength

old bridge ?? How old get pictures 

So far  

Conclude with current finances for Robert West

Do a measure on my personal salary and cost vs investment of having me.

Look at business as a whole.

Create future goals going forwards

Pin Jointed Truss Analysis & Design

1) Truss and Tie Model ( Compression = Truss, Tension = Tie).

Truss / Strut = Compression

Tie = Tension

Statically Determinate structure must satisfy:

Pratt Truss



2j = m + 3

j = no. of joints
m = no. of members

For the Pratt Truss above no of joints = 10, no. of members = 17

2 (10) = 17 + 3

Therefore as expected the Pratt Truss is statically determinant.

Pad Foundation and Load Take Down

Test coming up about  this topic

Section Properties

Section Properties

Section Properties are extremely useful when trying to determine section capacities:

Given the relationship of M/I = Sigma/y

I is useful and is the second moment of area: Which reflects the how points are distributed with regard to an arbitrary axis.



Ixx = bd^3/12 + Ah^2


Ie Sum of Ixx = Sum of Ixx + Sum of A(y*bar-y)^2

or

Iyy = Sum of Iyy + Sum of A(x*bar - x)^2

Use of the parallel axis theorem to find second moment area of an axis.

Quarterly Report

My target as set for work is to produce a quarterly report for the end of July ( 31st July).

In order to do this I am going to set out some of the things prerequisite for the quarterly report.

 

Joy Global Bucks Bridge Contract – has been worked on

Attended meeting for Kings Cross Bridge Structure

Blackwall Tunnel Roof Metal Motor Design Project

Solve Model been down for the design

COC1033a Bridge Project – Load Take Down for this

Load Capacity worked out for various components of COC1033a Bridge Project

Balfour Beatty Rail – 001 Thameslink K02 - London Bridge Gantry Project Inspection of Bridge Organised – Gap Analysis and Created Solve Model for the following Project -

Tensile Capacity of a Screw worked out

CrossRail  - Havier

Rail Project to be done on this project - Dilesh

 

 

For the Joy Global contract, I was assigned to perform a Cat xx check on the Bridge project – since this was my first assignment and no specific procedure had been given to follow the aim of the exercise was to follow the procedure as per the guidelines. To apply the works accordingly and try to come up with a relevant procedure as needed for the works.

 

Historical drawings were used to check the initial assumptions of the project as required. 1) Thing such as the skew of the bridge ie at 20 degrees was verified. The dimensions of the individual elements. The main factor here was the conversion from feet – centimetres (imperial to metric) conversion was used here to ensure that verification of the members.

 

Initial assumptions were checked for the structure to check the calculations in the excel spreadsheet were done accordingly.  One of the factors was to use a short method to check things such as the maximum bending moment of the structure.

 

Load Path to be checked of the structure

Dimensions verified

Assumptions checked ( skew of bridge)

Live Loading ( As per client demands)

Design Codes used and went through to clarify the structure and what is needed to be done

Some truck loadings were non-standard

BS EN 1993-1-1 Eurocode - Structural Steel

I have been having trouble trying to interpret this Design Code so I have broken it down into essentials:

1) When my manage says find the Section Capacity it means examine the section properties: ie 2nd Moment of Area, Yield Stress of Material to deduce what would be the maximum design load it can carry etc:

2) Then when it says applied loading it means check.actual.load then derive the utilisation ratio.

Bridge Engineering Design Codes - Buckling Steel Beam Design - BS EN 1993-1-1:2005

I am going to create a post to demonstrate the buckling calculation to the Eurocode Standard as this is a topic which came up in work and I would like to show people how to do the buckling calculation to the Eurocode Standard.


BS EN 1993-1-1


λ = (Squroot ( A fy/Mcr) Assuming Class 1. ( Ignore this)

Have to work out particular Section ie is it Class 1,2,3 based on E(epsilon).

Then work out C/t value to determine which class section relates to.


Class 1 Definition


Class 1 cross-sections are those which can form a plastic hinge with the rotation capacity required from
plastic analysis without reduction of the resistance.
– Class 2 cross-sections are those which can develop their plastic moment resistance, but have limited
rotation capacity because of local buckling.
– Class 3 cross-sections are those in which the stress in the extreme compression fibre of the steel member
assuming an elastic distribution of stresses can reach the yield strength, but local buckling is liable to
prevent development of the plastic moment resistance.
– Class 4 cross-sections are those in which local buckling will occur before the attainment of yield stress in
one or more parts of the cross-section. Laterally Restrained vs Unrestrained Beam question

Radius of Gyration Trick ( Ie Radius of Gyration about Axis).


  There is a difference between Axial Buckling and LTB


Understand the Design Code and what is has here!