Fixings used to connect the roof structure to the wall plate should be specified according to the roof construction and exposure of the site.
Pitched roof wall plate.
Setting out the roof wall plates the extension project is now up to plate level so it s time for pythagoras theorem.
Flat or pitched roof over an enclosed area abuts a wall.
With rafters collars ties struts ridges underpurlins ceiling joists hanging beams combination hanging and strutting beams pitching plates and so on.
Pitched roofs are generally used where rainfall is heavy.
Roof pitch refers to the amount of rise a roof has compared to the horizontal measurement of the roof called the run.
Plate level is the timber plate which is going to hold the roof structure including the roof joists hips and roof rafters.
Drill holes at these marks to allow a 6 nail to be driven through the wall plate into the joists.
Pitched roof is a type of roof which is provided with some slope as structure covering.
Balcony abuts a wall.
Rafter sizes tend to differ massively and will normally be determined by finding out the length from the wall plate to the ridges as well as the type of roof covering that is being used.
Lay a thick layer of cement on existing brick work then place the wall plate on this and get a good level.
A pitched roof uses not only the external wall systems but also particular parts of the internal walls.
The extension part 7.
38 x 100mm or in accordance with local practice.
We know that the roofs are generally provided at top to cover and protect the structure from different weather conditions.
Where trussed rafter roofs are not subject to uplift a minimum of two 4 5mm x 100mm galvanized round wire nails skew nailed one on each side of the trussed rafter or truss clips fixed in accordance with the manufacturer s instructions are acceptable.
After the drill bit.
Most people try and keep the cross section of any rafters as small as possible as they can be very expensive to put together.
Line up wall plate against existing joists and make a mark on the wall plate in line with the centre of the joists.
Occaisonally i will drill horizontally into the top plate the horizontal 2x4 on top of the wall studs.
A pitched roof construction is the classic old school way of roof construction.
To fix the joists and rafters down on to the wall plates they should be toe or skew nailed to the top plate like below.
Where a pitched roof abuts the wall at an angle a stepped cavity tray linked to a stepped flashing should be used.
Set out the ceiling joists onto the wall plates the ceiling joists are installed before the rafters as they will stop the roof spreading and also give something for you to lay planks across to stand on when building the roof.
Stepped flashings should be cut from a strip at least 150mm wide.
If buildings are constructed with some limited width then also we can go for pitched roofs.
