Lesson Summary
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Transcript of Lesson Summary
Lesson Summary
12.11.07
Compiled by M. S. Martin – Nov. 2007
Bearer & Joist Calc’s
No. Bearers = width of Building + 1 spacings
No. Bearers L-shaped Dwellings =
Area 1 = Width of Room + 1 Spacing's
Area 2 = Width of Room + 0Spacing's
You don’t add any for second area
No. of Joists = Internal Room Size + 1 for each room + ext..walls Spacing's
No. Joists L-Shaped Buildings =
Area 1 = { internal Room Size + 1 for each room} +ext..walls Spacing's
Area 2 = { Internal Room Size + 0 } +ext..walls Spacing's
You don’t add any for second area
Review your work exercises
Ant Caps / DPC – click mouse to bring in each point
Piers & Stumps are provided with physical barriers in way of “ant caps”
Materials of – Galvanised steel Stainless steel Etc.
Jointing methods Machine pressed Soldered Proprietary adhesives etc.
DPC – Damp Proof Course Provides a physical waterproof
barrier against rising damp etc. Embossed black polythene Alcore etc.
Laying Bearers & Joists - click mouse to bring in each point
Laid with Spring up Can be crippled over pier to
correct Place outside members first Then place intermediate members
to string lines & correct Review laying procedures in
revision toolbox.
Joining Bearers & Joists – review textbook, remember some are not acceptable shown in sketches
Openings in Floors
Remember trimming joists shown here can also be refered to as “Curtailed Joists”
Deep Floor Joists - click mouse to bring in each point
Define deep floor joists when Depth ≥ 4 x Thickness
Types of Blocking for deep joists Solid blocks Herringbone struts
Beside Solid Timber, deep joists can be LVL Timber I-beams Etc.