Steel Detailing | Precast Detailing | Estimation

Category: Learning Management System

Tek1’s Learning management system is based on Moodle
We have implemented tutorails and tests on Various standards which apply to steel detailing. the tests are available at https://wwww.training.tek1.com.au

  • DEMOULDING SLOPE

    Demoulding of precast member without damage to either the components like lifter or mould is critical to successful replication process for the particular complicated design. During mould design, the designers concentrate to make minimum draft (nearly 10 ) on mould to wherever the possible  to minimize demoulding force and resultant stress on lifters and prevent on weaker part of the precast member.

    For Example,

    CONTRIBUTORS DURING DEMOULDING WITHOUT SLOPE

    The above picture shows influencing factors for demoulding force. In this case the resultant DEMOULDING forces like vacuum & friction (Area of contact, Coefficient of friction & Normal contact Pressure) along with self-weight of precast will increase demoulding force. If the demoulding force exceed the lifter capacity limit leads to fail the lifters. So, we can’t able to lift this precast member. To eliminate this type of failure. We need to provide slope where contact pressure or interface adhesion develop.

    CONTRIBUTORS DURING DEMOULDING WITH SLOPE

    The above picture shows the effect of demoulding slope. Where the 10 slope didn’t affect too much the original shape of precast, but considerably minimize the demoulding force. The slope reduces the frictional force & provide passage to air enter where vacuum force develops.

  • CONCRETE WITH SPECIFICATION DIFFERENCE (N & S)

    CONCRETE:

     (AS 1379 Specification and supply of concrete) A mixture of Cement, aggregates and water with or without the addition of chemical admixtures or other materials.      

    Cement: (AS 3972 Portland or blended cement) A hydraulic binder composed of Portland or blended cement used alone or in combination with one or more supplementary cementitious materials.

    Concrete is defined as follows,

    • Plastic concrete:

    Concrete in the state between completion of mixing and initial set as defined in AS 1012.18 Methods of determining setting time of fresh concrete, mortar and grout by penetration resistance.

    • Hardened concrete:

    Concrete after initial set, as represented by test specimens that have been subjected to a specified process and duration of curing.

    • Normal- Class Concrete:

    Concrete that is specified primarily by a standard compressive strength grade up to 50 MPa and otherwise in accordance with Clause 1.5.3.

    • Special- Class Concrete:

    Concrete that is specified to have certain properties or characteristics different from, or additional to, those of normal-class concrete and otherwise in accordance with Clause 1.5.4.

    SPECIFICATION OF CONCRETE:

    Concrete shall be specified,

    (a) as either

    (1) Normal-class(N), or

    (2) Special-class(S), or

    (b) By strength grade or other readily verifiable parameter by which compliance with the specification can be assessed.

    NOTE: Standard strength grades should be specified wherever possible.

    • NORMAL-CLASS CONCRETE:

    Normal-class concrete shall be specified only by the parameters given in Clause 1.5.3.2(Basic parameter), and shall have the following attributes:

    • A mass per unit volume in the range 2100 kg/m3 to 2800 kg/m3 when determined in accordance with (AS 1012.12.1 Determination of mass per unit volume of hardened concrete) in the saturated, surface-dry condition.
    • Acid-soluble chloride and sulfate contents within the limits given in Clause 2.7, when determined in accordance with Clause 5.5.2.
    • A shrinkage strain not exceeding 1000 × 10−6, when determined in accordance with Clause 5.6 after 56 days drying.

    NOTE: This maximum value of 1000 × 10−6 is consistent with the use for design purposes of a median basic shrinkage strain value of 850 × 10−6.

    • A mean compressive strength at 7 days, assessed in accordance with Clause 5.7, of not less than the values of Grade designation for N20-9MPa, N25-12MPa, N32-16MPa, N40-20MPa & N50-25MPa.
    • A cement complying with (AS 3972 Portland or blended cement) alone or in combination with one or more supplementary cementitious materials.
    • No lightweight aggregate as defined in AS 2758.1 Aggregates and rock for engineering purposes Concrete aggregates.

    Basic parameters of normal-class concrete:

    The following basic parameters shall be specified by the customer:

    • A standard strength grade selected from 20MPa,25MPa,32MPa,40MPa, 50MPa,65MPa,80MPa or 100MPa and designated as one of N20, N25, N32, N40 or N50.
    • The slump at the point of acceptance, selected as one of 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm, 110 mm or 120 mm.

    NOTES:

    1. The customer should carefully consider that the specified slump of concrete suits the placement method.
    2. For residential slabs and footings, if the slump is not specified by the customer, the specified slump should be considered to be 100 mm.
    3. The maximum nominal size of aggregate, selected as one of 10 mm, 14 mm or 20 mm. Unless otherwise specified, the default value shall be taken as 20 mm.
    4. The intended method of placement, including relevant details of equipment.
    5. If project assessment is required to be carried out by the supplier (see Note).

    NOTE: If unspecified, it will be assumed that project assessment is not required.

    • If required, a level of air entrainment up to a maximum of 5.0%.

    (2) SPECIAL- CLASS CONCRETE:

    Concrete other than normal-class concrete shall be specified by the customer as specialclass and, if applicable, by strength-grade. The parameters and attributes that should be specified for special-class concrete should be as set out listed below with reference to Appendix B and Table B1 on AS1379.

    Special-class concrete commonly has the same basic parameters as normal-class concrete with some additions and(or) exceptions. Parameters or attributes that are different from, or additional to, those of normal-class concrete should be included in specification below. If the requirements of specification for any concrete are inconsistent with those for normal-class concrete then the requirements of specification take precedence for that concrete.

    Where any parameter other than strength grade requires the specification of a special-class concrete, or the proportions of the mix are specified, the concrete should be identified by an appropriate code agreed to between the supplier and customer that identifies that particular mix.

    Basic parameter for specification of special-class concrete:

    • It is recommended to select from standard strength grades of S20, S25, S32, S40, S50, S65, S80 and S100.
    • Where concrete is specified as special-class and a strength grade is applicable, the strength grade is designated by the prefix:

    S, for compressive strength grades;

    SF, for flexural strength grades; or

    ST, for indirect-tensile strength grades.

    Where concrete is special-class and any property other than strength grade is Specified as the principal criterion, or the proportions of the mix are specified, it is designated by an appropriate alphanumeric code, agreed between the supplier and the customer, to indicate the criterion.

    • Special-class concrete should be subject to project assessment.
    • Certain concrete exposure classifications may require special provisions for aggregate durability (AS 2758.1 Aggregate & Rock for engineering Purposes.)
    • Any departures from the parameters or composition, or both, of normal-class concrete and any other criteria or limitations shall be specified by the customer in consultation with the supplier.

    NOTE: A summary list of several such parameters, some or all of which may be specified for the production of special-class concrete for a project, is given in Appendix B on AS 1379.

    • Other requirements additional to these parameters may be specified.

  • BIM 360 DOCS AND PROJECT HANDLING ON IT

    Why Bim 360 Docs?

        Bim 360 is Construction project management software created by Autodesk. The main intent of using Bim 360 Docs will resolve the following thing

    • The project status with its workflow with project time frame can be easily tracked by every consultant and organization assigned.
    • It helps to access the different file formats directly online instead of installing the particular software required
    • The error can be sorted and make the decision handling by solving the RFI raised to the concerned consultant which  can be reviewed and easily sorted by accessing the file / Model directly
    • Anytime and anywhere access can be easily attained for the projects and their files
    • The mark-ups review provided by the consultant for the submitted documents can be reviewed and fixed easily
    • The file can be  Access easily  frim anytime and anywhere just by login to the Bim 360 in Browser or in mobile
    • It will make it simple in the documentation handling especially on the revised drawings and tracking the previous submittals history also. 

    Steps for Creating Project in Bim 360 Docs (Before these steps, log in to the Autodesk account you created in the Bim 360 and select the docs. Click “try now” after that you will see the images shown below 

    Step 1: Select the “Docs” Dropdown box on the top left corner of the Bim 360 Docs

    Step 2: Click on the Account Admin to create a new project

    Step 3: Click on to “ Create Project”

    Step 4: Fill the Project Details and Particulars with your Autodesk Email ID and click Create Project

    Step 5: Provide your information such as role, access level, and organization on the right-hand side

    Step 6: Please Turn on the products to be used by moving the scroll down. So that Turned on feature can be accessed as shown in Step 10

    Step 7: Click on to Add member to assign the members who are going to involve and access the files in this project

    Step 8: Assign the members by adding their Autodesk email with organization name and their role and select as project member and click Add

    Step 9: After adding the member you can see their active status and details under the project we assigned

    Step 10: As we turned on the following highlighted things in step 6. So that now we can access the following by Selecting the Dropdown and click on the docs to upload the file

    Step 11: To create Subfoler and folder click on to the highlighted below and select Add subfolder

    Step 12: After creating and naming the folder right-click to it and click on the upload and file. then drag the file and start upload

    Step 13: The file with its details and version, Mark-ups status will be displayed once the above steps are done

    By clicking on to version you can review the history of the file from start to upload till revised. The file model can be review online itself by clicking on Filename

  • Moodle Learning Management System

    Tek1 is now offering to set up a learning management system for whoever needs it for a fee.

    We have successfully used Moodle LMS to recruit and train.

    While there are hundreds of thousands of engineering degree holders in India who is looking for a job for employers it is a big challenge to find the employable ones. Almost 95% of the young engineers passing out of engineering colleges in India are not employable as engineers. However, they will produce credentials and certificates showing that they have passed out with flying colors.

    It is a recruiters nightmare if we have to screen all of the applicants one by one. Hence some sort of a method is required to screen out the un employable. That is what we have done using the Moodle LMS.

    Now we are offering LMS services to whoever wants to take advantage of the expertise we have gained.

    Try the following link

    https://www.tek1.com.au/lms/