2 nd Year Trade Overview M. S. Martin Revised Feb. 2010

Deferred Results All DR’s have to be completed by the end of the third teaching week 2010, or They will automatically change to a NC (Not Competent)

New Text / Workbook

Subjects – Assessment Guides located in first section of folder Construct Wall Frames Construct Ceiling Frames Construct Eaves Construct a Pitched Roof ( Simple, Intermediate and Compound) Carry Out General Demolition Frame & Fit Wet Area’s Erect and Dismantle Restricted Height Scaffold Operate Elevated Work Platforms Sign Off

OH&S - Reminder Workshop – Boots & PPE at all times Induction Card numbers to be recorded in Roll Power tool use only after induction has been completed, if anyone absent last year it has to be done ASAP Sign Off

WALL FRAMES

Name the Components – Wall Frames

Wall Frame Components

Wall Frame Components – from P2 textbook Plates – horizontal members that form the top & bottom of the frame Studs – Vertical members placed between the plates Trimmers – horizontal members fixed between window & door studs Trimming studs – short studs running between trimmers & plates (commonly called jack or soldier studs) Noggings – horizontal members cut between studs to prevent them twisting Blocking – placed at the intersection of wall frames to join frames Lintel – also called a head, horizontal load bearing member placed between studs Bracing – provides lateral stability and prevents raking.

Quick Questions What are the three functions of timber framework? To support & separate frame members, To prevent twisting & warping of other frame members, To provide a face to attach linings & claddings. Name two commonly used timbers for timber wall framing. Radiata pine, Oregon and mixed hardwoods depending on the region

Questions Continued Describe the difference between a load bearing wall and a non load bearing wall. Load bearing walls support roof loads, upper floor frames, their own weight and the weight of materials hung from them and in some cases specific point loads. Non load-bearing walls only support their own weight and the materials hung off them. What is the minimum grade of timber used in timber wall frames? F5 grade

Questions Continued For typical residential work, briefly describe how the use of roof trusses affects the construction of the external walls. Top plate must be increased to a minimum of 70mm for seasoned timber or 75mm for unseasoned timber. Alternatively you can use a double top wall plate to provide full support, particularly when trusses are not positioned directly over studs for support.

Questions Continued When would you use a head trimmer to span an opening as opposed to a lintel? You would use a head trimmer when the opening is in a non load bearing wall and a lintel in a load bearing wall and / or on wide openings, typically over about 1.0m Provide two common names for studs found under a window. Jack studs or soldier studs

Questions Continued What is the purpose of a lintel? To transfer the load of a roof and / or the upper floor to the sides of the opening without deflection. Name three materials used for lintels Solid timber, LVL beams, Z or C channels in steel