Design and drawing for structural timber frames


Overview
This intermediate level standard provides the learner with the information and skills to competently design and draw a simple oak frame structure.

CITB has developed this standard in discussion with industry

Duration

Minimum 2 days of 6 learning hours

Purpose/Scope

This training module will provide the attendee with the information and skills to competently design & drawing a simple oak frame structure.

The scope of this standard covers:

  • framing drawings
  • architectural drawings
  • load paths
  • tension and compression
  • drawing
  • annotation
  • jointing
  • reference points
  • structural design

Occupational relevance

Training delivered against this standard would be relevant to the following occupational groups:

  • operative and craft

Candidate pre-requisites

It is expected that the candidate will be employed within the oak frame industry or have significant relevant carpentry experience.

Instruction/Supervision

As a minimum, course instructors must be able to demonstrate that, in relation to this standard, they have:

  • a train the trainer or instructional techniques course certificate
  • successfully completed training to this standard
  • at least 10 years relevant industrial experience
  • a verifiable CV

Delivery

Delivery may be in an on or off the job environment.

All materials and equipment must be of a suitable quality and quantity for candidates to achieve learning outcomes, and must comply with relevant legislation.

The class size and candidate/instructor ratio must allow training to be delivered in a safe manner and enable candidates to achieve the learning outcomes.

The following delivery methods may/may not be used in the delivery of this standard:

  • classroom
  • workshop

This standard is considered to contain 51% or more practical learning.

This standard is considered to be set at an intermediate level.

Assessment

For the successful completion of training, candidates must complete an end of course practical assessment or knowledge test that measures the learning outcomes and has a pass or fail criteria.

Quality assurance

Quality assurance against this standard will require initial approval of the training organisation and their content mapped to the standard. 

CITB will also conduct an approval intervention, either desk-based or centre visit, to ensure the training organisation can meet the requirements of the Training Standard. 

Approved training organisations will be required to present information on records of training and assessment upon request to CITB for desk based analysis. They will also be visited annually by the CITB quality assurance team.

Renewal/refresher

There is no mandatory renewal or recommended refreshment requirements for this standard.

Approval date

April 2019

Review cycle

Either on request or in 3 year(s) from approval date.

Learning outcomes

The candidate will be able to: Additional guidance to support learning outcome

Interpret framing drawings.

  • Identify the correct scale.
  • Check for current revision and date.
  • Take off dimension using a scale rule.
  • Create a cutting list from a scaled drawing.
  • Use the drawing to check for joint/peg clashes.
  • Position scarf joints accurately.
  • Explain the transfer of information from the drawing to the timber including reference marks and datum positions.

Interpret architectural drawings.

  • Identify the correct scale.
  • Check for current revision and date.
  • Take off dimension using a scale rule.
  • Identify the frame within the drawing.
  • Demonstrate competency at checking dimensions against the framing drawings.
  • Demonstrate competency at extracting architectural information.

Identify load paths and tension and compression forces within a set of frame drawings.

  • Explain the principles of static forces generated by gravity including those leading to beam deflections, outward thrust at wallplates, cantilever forces at jettied structures etc.
  • Describe the principles of dynamic loads from movement of people or heavy items in the building, snow loading, wind loading etc.
  • Explain the principles of shrinkage in tangential radial and longitudinal directions, and how this can affect frame design.
  • Describe the relative strength of timber joints in tension and in compression.

Additional information

Recommended reading:

OAK FRAMED BUILDINGS – Rupert Newman

FRAMING ROOFS – The best of fine homebuilding

BARNS OF RURAL BRITAIN –Graham Hughes ISBN 0-906969-36-0

TIMBER FRAME – Ted Benson ISBN 1-56158-281-6

TIMBER FRAMED BUILDINGS – John Bailey Bed Bucks and Cam Historic Building Research Group

CONSERVATION OF TIMBER BUILDINGS – F. W. B. Charles ISBN 0-7487-0376-4

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