definitions & terminology - eaves are basix calculations
TRANSCRIPT
What is BASIX
• What is BASIX ? BASIX is the Building Sustainability Index. It is a web-based planning tool that is designed to assess Water, Thermal Comfort and Energy performance of a new home, extension or swimming pool (over 40 000 Litres).
• • Who needs a BASIX Certificate? A BASIX Certificate is
required on all new single dwellings, dual occupancy, villas, townhouses and multi-units in NSW. A certificate is also required for alterations and additions over $50 000 and swimming pools at or over 40 000 Litres
Flush Eaves
• Saves Cost– Scaffold– Material– Labour
• Problems – IF Gutter Fails– Water Runs Down Walls– Pools Formed at Footings– Causing Erosion, Swelling
Rafter 90 x 45Pitch 25⁰
Calculating Drop OffSTEP 1 Calculate the RISE of Hatched Triangle
450mm x Tan 25⁰ = 210mm
Rafter 90 x 45Pitch 25⁰
Calculating Drop OffSTEP 1 Calculate the RISE of Hatched Triangle450mm x Tan 25⁰ = 210mm
STEP 2 Add Birdsmouth
210 + 33 =
Rafter 90 x 45Pitch 25⁰
Calculating Drop OffSTEP 1 Calculate the RISE of Hatched Triangle450mm x Tan 25⁰ = 210mm
STEP 2 Add Birdsmouth
210 + 33 = 243
Rafter 90 x 45Pitch 25⁰
Remember Overhang Usually Specified From External Wall but Calculated For
Back of Birdsmouth
What is the Drop OffCavity = 40mBrick = 110mWhat is the Drop Off
Hazards
• Fall from Heights• Contact with Live Electrical Wires• Materials, Tools falling From Heights• Scaffold Collapse or Toppling over• Dust
• Complete Safe Work Method Statement
Cutting FC Sheeting
• Fibro Cutters• Score & Snap Knife• Grinder with Diamond Blade (Dust Mask
Required)
Estimating
Step 1- Calculate Number of Soffit Bearers
12500 / 600 = 20.83 = 21 +1 = 22 x2= 44
44 x 0.6 x 5% = 44 x 0.63
Fixing Plate 2 @ 12.5
No. LengthSoffit Bearers 70 x 35 F5 44 0.630 0.900 39.600 1.90$ 75.24$
Wall Plate 70 x 35 F5 2 12.500 12.600 25.200 1.90$ 47.88$
Item Section Size Material Linear Total Linear Rate / lm Cost Order
No. LengthSoffit Bearers 70 x 35 F5 44 0.630 0.900 39.600 1.90$ 75.24$
Wall Plate 70 x 35 F5 2 12.500 12.600 25.200 1.90$ 47.88$ Fascia 190 x 25 H3 FJ 2 13.700 13.800 27.600 7.00$ 193.20$
Item Section Size Material Linear Total Linear Rate / lm Cost Order
Estimating
Step 3- Calculate Barge Board
Barge Run = Half Span + Eaves Width + Fascia + Gutter
= 3450+600+25+200
No. LengthSoffit Bearers 70 x 35 F5 44 0.630 0.900 39.600 1.90$ 75.24$
Wall Plate 70 x 35 F5 2 12.500 12.600 25.200 1.90$ 47.88$ Fascia 190 x 25 H3 FJ 2 13.700 13.800 27.600 7.00$ 193.20$
Barge Board 190 x 25 H3 FJ 4 4.806 5.100 20.400 7.00$ 142.80$
Cost Order
Item Section Size Material Linear Total Linear Rate / lm
Estimating
Step 4- Soffit Lining
Soffit = 2 x Length + 4 x Barge
= 2 x 12500 + 4 x 4804
= 44.216 x 1.05(5% Waste) = 46.43 / 2.4(Sheet Length) = 19.34 = 20 Sheets
No. LengthSoffit Bearers 70 x 35 F5 44 0.630 0.900 39.600 1.90$ 75.24$
Wall Plate 70 x 35 F5 2 12.500 12.600 25.200 1.90$ 47.88$ Fascia 190 x 25 H3 FJ 2 13.700 13.800 27.600 7.00$ 193.20$
Barge Board 190 x 25 H3 FJ 4 4.806 5.100 20.400 7.00$ 142.80$ Soffit Lining 600 FC 20 2.4 x 0.6 5.00$ 100.00$
Cost Order
Item Section Size Material Linear Total Linear Rate / lm
Estimating
Step 5- Joining Mould
20 Sheets
21 Joins x 0.6 = 12.6 x 1.05 (5% Waste) = 13.23/2.4= 5.5 = 6 Lengths
No. LengthSoffit Bearers 70 x 35 F5 44 0.630 0.900 39.600 1.90$ 75.24$
Wall Plate 70 x 35 F5 2 12.500 12.600 25.200 1.90$ 47.88$ Fascia 190 x 25 H3 FJ 2 13.700 13.800 27.600 7.00$ 193.20$
Barge Board 190 x 25 H3 FJ 4 4.806 5.100 20.400 7.00$ 142.80$ Soffit Lining 600 FC 20 2.4 x 0.6 5.00$ 100.00$ Joining Strip H Mould 6 2.400 2.400 14.400 1.58$ 22.80$
Cost Order
Item Section Size Material Linear Total Linear Rate / lm
Estimating
Step 6- Quad
2 x Building Length + 4 x Verge length (Rafter Centreline)
2 x 12500 + 4 x 3806 = 40 224 x 1.05 (5% Waste)= 42 235
No. LengthSoffit Bearers 70 x 35 F5 44 0.630 0.900 39.600 1.90$ 75.24$
Wall Plate 70 x 35 F5 2 12.500 12.600 25.200 1.90$ 47.88$ Fascia 190 x 25 H3 FJ 2 13.700 13.800 27.600 7.00$ 193.20$
Barge Board 190 x 25 H3 FJ 4 4.806 5.100 20.400 7.00$ 142.80$ Soffit Lining 600 FC 20 2.4 x 0.6 5.00$ 100.00$ Joining Strip H Mould 6 2.400 2.400 14.400 1.58$ 22.80$
Quad 19 x 19 H3 FJ 1 42.235 42.300 42.300 1.17$ 49.49$
Total 631.41$
Cost Order
Item Section Size Material Linear Total Linear Rate / lm