Truss Roof Installation

Set Out

Before you begin moving the trusses onto the roof it is important to know where they are all going and more importantly that the top plates are square. The first trusses that need to be put in place are the truncated and girder trusses as they are crucial to the roof. Standard trusses are then set out as they can be all stood in the same motion.

Standing the Trusses

On a gable roof the first truss to be stood would be the gable truss witch is located over the end wall. On a hipped roof you start with the girder truss. As each other truss is stood and fixed at the heel, the truss is braced with a battern 3/4 of the way up the top chord, it helps to have the truss spacing marked on this battern.

Erection Tollerances

When leveling up the trusses and bracing with the bottom chord tie it is important to remember the rule of - the hieght of the truss / 50 is the max it can be out of level and the length of the bottom chord / 200 is the max it can be out.

Fixings and Connectors

Australian standards require that trusses are tied down using connectors. Many factors determine whitch on how many of these connectors must be used, these include, roof covering, truss spacing, wind classification and roof pitch. The connectors that can be used include such as, triple grips, L brackets, speed bracing, and cyclone ties.

Thursday 11th of December

Today Graeme was away so we had Ray. Firstly we did a calculations assignment, that was based on fixing out skirting, architrave, window nosing and scotia. I passed this assignment so i didnt need to do any fixing up to it.

After smoko we did a workbook on occupational health and safety, it covered a chart on different classes of fire and the coloured fire extinguisher that should be used in the case of that fire. It goes through safety signs. Tomorrow we will be doing a test on occupational health and safety.

Safe Work Method Statement for Cladding

1. Cover frames with brown paper to represent sarking, sticking it to frames with masking tape.

2. Put timbers in the internal and external corners with black plastic flashing behind them.

3 .Put packers at the bottom of the frame so that the bottom of the bottom sheet sticks out on the right angle.

4. Cut MDF boards so that they fit snugly in between external and internal corner timbers.

5. Fix MDF cladding using pilot drill and long screws. Giving 25mm overlap on each sheet and checking for level each time.


1. Cutting self when tearing the brown paper.

2. Cutting self when cutting the timbers and black plastic or burning self on drill bit.

3. Burning self on hot drill bit.

4. Cutting self on drop saw or getting dust in eyes when cutting.

5. Burning self with drill bit.


1. Tape care when ripping it.

2. Cut away from you, keep hands clear of blade and take care when drilling.

3. Hold drill so that the drill bit is always point away from your body.

4. Keep hands clear of drop saw blade, always wear safety glasses and make sure dust extractor is on.

5. Keep drill bit away from your person.

Project Plan for Cladding

Name
Steve Turnock
Date
10/12/1989
Project
name
Cladding
Construction steps
How it happens
Tools and Equipment required
1
Cover frames with brown paper to represent sarking, sticking it to frames with masking tape.
Brown paper and Masking tape
2
Put timbers in the internal and external corners with black plastic flashing behind them.
50x50 pine, pilot drill bit, Philips head tech bit, cordless drill, black plastic strip and screws.
3
Put packers at the bottom of the frame so that the bottom of the bottom sheet sticks out on the right angle.
Strips of MDF (off cuts), counter sinking screws, previous drill set up.
4
Cut MDF boards so that they fit snugly in between external and internal corner timbers.
MDF boards, drop saw, measuring tape, pencil.
5
Fix MDF cladding using pilot drill and long screws. Giving 25mm overlap on each sheet and checking for level each time.
MDF cladding, Previous drill set up, screws, level, tape measure and pencil.

Safe Work Method Statement for Windows

1. Use a hammer and nails to fix window frame into the stud frame.

2. Pin alcore around the window frame.

3. Cladding the outside of the window with timber boards.

4. Clad the inside of the frame with MDF to simulate gyp rock.

5. Put jam liners on both sides and top of the window.

6. Thicken, rout and fit a window sill.

7. Put architraves around the window.

1. Hitting fingers with hammer.

2. Hitting fingers with hammer, or cutting self while cutting alcore.

3. Cutting self on either the drop saw or band saw.

4. If there are old pins still sticking out of the MDF, hitting fingers with hammer.

5. Dust in eyes when cutting.

6. Getting hand caught in thickener, cut fingers with router, shoot self when pinning the sill

7. Cutting hands on the drop saw, shooting self when pinning the architrave.

1. Hit the nail slowly being careful not to hit fingers.

2. Hit nails carefully, and cut away from you when cutting the alcor.

3. Keep hands away from the blade on both drop saw and band saw

4. Be mindful when getting the MDF sheets, be careful when putting it on.

5. Make sure your wearing safety glasses and the dust extractor is on.

6. Always keep hands clear of thickener, always have both hands on the router and never put hands around where nailing.

7. Always keep hands away from drop saw when cutting and away from pin gun when nailing.

Calculation Assignment- Cladding

Exercise 1
Step 1- Perimetre of the building- (8550x 5200) x 2
= 13 750 x 2
= 27.5m

Step 2 - Gross area of walls- 27.5 x 2.4
= 66 m ^2

Step 3- Total area of openings- W1 = 1.3 x 1.6 = 1.43m ^2
W2 = 1.3 x 1.6 = 1.43m ^2
W3 = 1.2 x 1.1= 1.32m ^2
W4 = 1.5 x 1.7= 2.55m ^2
D1 = 2.1 x 0.9= 1.89m ^2

Total = 9.92 m ^2

Step 4- Nett area of walls- 66 - 9.92 = 56.08 m^2

Step 5- Coverage of boards- 1 / 0.16 = 6.25
= 6.25 boards per square metre

Step 6 Metres of boards required- 57.38 / 0.16 = 350.05m (2dp)

Step 7 Add for waste- 350.05 x 1.07 = 375.035 m

Step 8 Find the Cost- 375.035m x $7.25 per metre
= $2719.00

Exercise 2

Step 1 Perimetre of the building- (7030 x 10110) x 2
= 17140 x 2
= 34280m

Step 2 Gross area of walls- 34.28m x 2.4
= 82.27 m ^2

Step 3 Total area of openings- W1 = 1.35 x 1.5 = 2.025
W2= 1.8 x 1.2= 2.16
W3 = 1.8 x 1.8= 3.24
W4 = 1.8 x 1.2= 2.16
W5= 1.35 x 1.5= 2.025
W6= 1.2 x 1.8 = 2.16
D1= 2.1 x 0.9= 1.89

Total = 15.66 m ^2

Step 4 Nett area of walls- 82.27 - 15.66 = 66.61 m^2

Step 5 Square metres per sheet- 2.7 x 1.2 = 3.24 m^2

Step 6 Add on waste- 66.61 x 1.075 = 71.61

Step 7 Sheets required - 71.61 / 3.24 = 22.10 sheets
= 23 sheets with correct rounding

Step 8 Costing- 71.61 m^2 x $ 6.45 = $461.88

Project Construction Plan Assignment

Name
Steven Turnock
Date
8/12/1989
Project
name
Window Installation
Construction steps
How it happens
Tools and Equipment required
1
Firstly you cover the pre made stud frames with brown paper to simulate sisilation.
Bench clamp, brown paper, masking tape.
2
Then install the windows into the frames, nailed them in, and fit damp course around the window.
Damp course, windows, nails.
3
Then, clad the outside of the frame with timber cladding boards.
Bullet head nails, cladding, drop saw.
4
Then clad the inside of the wall with mdf to simulate gyprock. And pack around the window.
MDF boards, pins, timber.
5
Then fit a window sill into the window that has been routed and run through the thicknesser
Thicknesser, 90mm timber, pins, router.
6
Then surround the window with architrave.
Architrave, pins, drop saw