Structural Steel Detailing / Workshop Drawings
Structural steelwork detailing (Workshop Drawings) is prepared on a "per tonne of steelwork detailed" basis.
Provision of PDF Files Only
The current rate for preparing the detail drawings where only PDF files are provided varies between $420 and $1,180 per tonne calculated using a density of 7.85 tonnes per cubic metre.
In addition to this, there is the 3D structural model from which the detail drawings are prepared. This is charged on an hourly rate basis. The current rate is $84 per hour (ex. GST).
Provision of DWG and/or DXF Files
If DWG and/or DXF files are required, this must be clearly stated before anything is agreed and before any work has commenced. The client must provide all symbols libraries, setup templates, layer templates, pen colours:pen width mapping, drawing sheet borders, font files, linetype files, etc. Only information that is provided will be used in preparing the drawings.
Also, the client accepts full responsibility in the interpretation of the drawings as symbols and standards used may not conform to Australian Standards
Because of now having to work with unfamiliar settings and standards, there is a surcharge applied to the preparation of the drawings.
Where DWG and/or DXF files are required, the current rate for preparing the detail drawings varies between $632 and $1772, per tonne calculated using a density of 7.85 tonnes per cubic metre.
In addition to this, there is the 3D structural model from which the detail drawings are prepared. This is charged on an hourly rate basis. The current rate is $128 per hour (ex. GST).
Detailing is not commenced until the complete 3D structural model is completed and accepted. Once the 3D structural model is completed and accepted, any changes to the model will be an extra.
Before any quotation can be provided for workshop drawings, the following information MUST be provided.
A clear stick diagram of the steel structure to be detailed. This must include all plans, elevations and sections that clearly identify every member of the structure and its dimensions. It must also indicate where beams or columns end or pass through or over. If necessary, a 3D (or isometric) stick diagram must be provided.
A member schedule that unambiguously nominates the correct size of each member in the structure. Sections nominated must be commercially available. Where special sections are nominated (i.e. sections without a formal commercial section designation), the member schedule must clearly indicate the manufacturer/supplier of the section.
A schedule of connection details. Every connection in the structure must be clearly identified and the type and details of the connection must be provided. The Structural Engineer's Details can contain the connection code as set out in the AISC Standardized Structural Connections.
An estimated total mass of steelwork to be detailed.
All set-out points are to be clearly shown and must be correct.
All purlin and girt details provided to suit the specified cladding/framing/sheeting. This must also include all bolting, fly bracing, purlin lapping, and bridging details.
All holding down bolt details (i.e. size, type, embedment, etc.).
All baseplate levelling information (i.e. packers and sizes, jacking nuts, grouting allowance, etc.).
All secondary steelwork details (i.e. handrailing/guardrailing , grating, decking, etc.).
All steelwork that is architectural. These requirements must be clearly stated on the structural drawings.
Any other information to ensure clarity of the information.
Remember, all this information must be available for the Structural Engineer to be able to certify the structure. This can be summarised by the 4 C's - Clear, Concise, Complete, Correct.
Extras will be charged where the structure is altered (i.e. members removed, or members added, members changed, structure cannot be resolved). This will be charged at the standard hourly rate to cover the redrawing, plus an additional amount for the new tonnage detailed or amended.
Site visits are charged at the standard hourly rate plus kilometerage, and it is conditional that free on-site parking is made available for a vehicle with a height clearance requirement of 1.96 m. All tolls and other charges are to be reimbursed.
A pre-payment for 18.75 hours or 50% of the estimated hours to prepare the 3D structural model (whichever is the smaller) must be made with the placement of an order. Weekly invoices will be submitted and must be paid for work to continue. As the completeness of the information required to prepare the 3D structural model is not known and varies from project to project, it is not possible to give a final figure for this payment.
On completion and acceptance of the 3D structural model, a deposit of 50% of the price based on the estimated total mass of steelwork to be detailed on placement of an order.
A further payment taking the amount paid to 90% of the price now adjusted for the actual total mass calculated using a density of 7.85 tonnes per cubic metre, PLUS any amounts for extras, is to be made before the drawings will be issued FOR APPROVAL.
The final payment for the remaining 10% of the adjusted total PLUS any further amounts for extras is to be made before issuing the drawings FOR CONSTRUCTION.
For these payment milestones, if payment is not made by Direct Debit, then a cheque must be provided and cleared by the bank before any commencement of work for the initial pre-payment, issuing the drawings FOR APPROVAL, or issuing the drawings FOR CONSTRUCTION.
If the cheque is dishonoured, the dishonour fee, plus any additional costs incurred by WAI Engineering will also be charged, and those additional charges must be paid before the particular milestone can be passed. Authorities will be notified where it is believed that deception is involved (eg: a cheque is raised for a particular milestone payment when the issuer knows there are insufficient funds to cover the cheque).
Drawings will be submitted for approval as PDF files, however they will be watermarked and clearly marked as FOR APPROVAL ONLY and NOT FOR CONSTRUCTION. Use of such drawings is not advised as they may not contain all changes for the structure to be manufactured correctly. Only drawings clearly marked as FOR CONSTRUCTION are to be used to manufacture or order any items.
All invoices for works provided to the Building & Construction industry are issued under the Building & Construction Industry Security of Payments Act - 1999.
Delivery of Drawings, Ownership & Permission to Use Drawings
Other than incidental drawings covering items that need clarification as a result of detailing, no drawings will be provided other than at the milestones set out above. All drawings remain the property of WAI Engineering until such time as ALL amounts invoiced are paid and cleared by the bank. Permission to use the drawings is only given once ALL amounts invoiced are paid and cleared by the bank. This permission will be provided in a formal document and will be for the specified project only. Use outside these conditions would be considered a breach of intellectual property rights and will be pursued.
Deliverables will be as set out by the Australian Institute of Steel Detailers.
No work can commence until:
a formal quotation is provided by WAI Engineering, fully completed, returned, and accepted, and
a Sub-contractor Reference is fully completed, returned and accepted, and
an initial pre-payment is made and cleared, and
a complete printed set of project drawings including comprehensive Engineer's Details is provided, clearly marked as FOR CONSTRUCTION.
a formal order is received clearly identifying the WAI Engineering quotation and accepting WAI Engineering Terms & Conditions unconditionally.
Communication & Acknowledgement
All communication shall be in English and in writing. This can be by letter, fax, or e-mail. All e-mails are to be acknowledged by using the reading receipt function of an e-mail client. Where the e-mail client being used does not support a reading receipt, the recipient of an e-mail must manually send a reading receipt. Faxes sent do not require any acknowledgement, however letters should be simply acknowledged unless sent by registered mail. This applies to all parties.
Telephone calls can be made, however nothing can be actioned until it is confirmed in writing (i.e. letter/fax/e-mail).
Making telephone calls on a daily basis to check on progress is NOT acceptable.
Office hours are strictly 9:00 am to 5:00 pm Monday to Friday excluding public holidays. Contact is only to be made during these times. Actual hours worked may be outside these times.
Prices subject to change without notice - E&OE