Page 66

Timber structures Timber frame

Site checking to ensure high-quality work While modern timber frame buildings are usually factory made, a successful project still requires every aspect of the on-site construction process to be completed to high standards of workmanship.

S

ite check: The timber frame pocket guide equips site managers and other construction professionals with a reliable resource to supervising and checking subcontractors’ work.

The wiro-bound book has colour-coded sections for each stage of the construction process, and summarises core activities in a checklist format, concentrating on the most important aspects needed to complete the construction process successfully.

Substructure Getting the location and level of the foundation right is one of the most important parts of the process, so it is essential that the tight tolerances required are understood. Poorly laid and inaccurate substructure can lead to other problems further along the build process.

Materials used for levelling sole plates may not be adequate for load transfer. Full support must be provided before construction proceeds beyond ground floor wall panels.

Delivery and storage Materials should be delivered to site ‘just in time’ to minimise the likelihood of damage and ‘double handling’. Panels and ancillary components should be checked against specification to ensure that everything ordered has been delivered and is in a satisfactory condition. Storage tips include: • storing components on level bearers off the ground, ensuring that no panels are distorted • covering the components loosely to protect from moisture, while allowing ventilation.

Sole plates Sole plates must be correctly installed. The setting out and fixing of sole plates can influence the performance of the whole building. Therefore, accurate location, adequate bearing and specified fixing are all crucial. Where packing under a sole plate is required, the option used should be specified by a structural engineer. Common methods are: • permanent structural packers under the sole plate • structural grout under the sole plate. Image 7 - Permanent structural packing under sole plate

Bottom rail of wall panel Sole plate

Grout or permanent packing under each stud/structural post dpc

Permanent structural packing under sole plate

64 |

Timber 2019 Industry Yearbook

Components should be stored off the ground and covered loosely to protect the timber from moisture

Walls All wall panels should be square and dimensionally accurate before following the fixing schedule prepared for the site. The structural engineer’s specification should be followed in all cases; if there is no specification provided, one should be requested. Temporary bracing should be used to maintain alignment of the assembled components. Out of square panels should not be used, as this can cause the overall length of a wall to grow and could lead to wall panels overhanging the sole plates.

Profile for BM TRADA

Timber 2019 Industry Yearbook  

The annual publication of the Timber Research and Development Association (TRADA) includes topical and technical features on all aspects of...

Timber 2019 Industry Yearbook  

The annual publication of the Timber Research and Development Association (TRADA) includes topical and technical features on all aspects of...

Profile for trada
Advertisement