August 12, 2017 18:06
Rafter roof, parts, fasteners.
important element of the roof construction is mauerlat.Support beams farm are not installed directly on the wall.Installation of roof beam is made on the basis of the reference timber - mauerlat.He is solid.Mauerlat laid exactly along the perimeter under the rafters.Used timber (with the cut off side), timber, boards.With the help of the roof weight evenly distributed on a rational design.To him it was joined rafters.
rafters on the location of the sample mauerlat
dominant purpose of the rafters (naslonnyh, suspension) - to transfer the load from the roof to the side supports - walls.Large support area for rafters ensure proper transmission of loads.Serious stress are permanent, temporary, emergency.By the time servicing equipment are working builders, snow, wind.Special (extraordinary) load - is the seismic action.Constant - weight of the roof structure.
All fittings for rafters, mauerlat chosen carefully - need quality, reliable parts.Washed down should be made clear, fit tightly.It excludes the application of any backings, substrates.These elements over time, no doubt, can fail to deform.Fastening the rafters of the roof is carried out with the use of plates (of metal), special parts, brackets, nails, screws.Their sale abound.For the bolts, nuts, washers are required, the metal plate.They successfully prevent the "immersion" into the wood screws.For the lining instead of plates is quite descend segments of plywood.
scheme fixing rafters to mauerlat
Working torque fastening rafters is very important when installing roofs.Undoubtedly, the method of connection to the supporting beams mauerlat independent state ( "conduct") of the roof in different weather.For example, when the temperature drops, snow drifts, wind.The connection is done by two methods: a rigid, sliding.It is important to form the roof trusses installed model.Also see about Laying nets under mauerlat.
tree, without a doubt, is expanding from moisture.At high temperatures - is compressed.Consequently, the roof structure is not static (ie, mobile).Here Hard mounting method should be excluded.There is a danger of displacement, even tears.Improper installation can cause the appearance of the brace forces.Its effect on the wall is dangerous.Therefore, the correct binding rafters - a guarantee of security.
Another example of mounting
The main principle of this technology fastening rafters - exclusion of any effects on the combination of elements.Not allowed twists, turns, shifts.This is achieved by making the static bindings through corners, the reference beam.The connection can be done as well, making gashes in the rafters, brackets, driving in of nails.
In the first case, the beam will be based on mauerlat equipped podshivnoy support bar.The one- bar provides a rigid beam upiranie.Additionally, you can lock the beam laterally with metal corners.This eliminates the transverse displacements.
The figure shows an example of the hard fastening rafters
The second method is more popular.When driven side nails (for fastening), attached to a certain bias.Inside the cloth must be crossed.Then on top of vertically hammered another nail.As a result, it creates a rigid unit, fastening beam with mauerlat.
Fastening with nails
Both options rafters still attached wire anchors to the wall.
This bond is often called a hinge.There are two degrees of freedom.Performs fasteners model, allowing unimpeded displacement of any element.With this structure, the moving part are rafters.This type of mounting support beams produced by different methods.
Fastening the rafters - by "runners»
Each option presented fastening clasps securely to the rafters mauerlat.Even small shifts sostavlchyuschie roofing parts move relative to each other.It is known that the sliding pair in the construction of the roof is used more often.This technology is particularly useful when creating wooden structures, constructed of logs, timber.Over time, due to the shrinkage of the house, a little change of construction geometry.Therefore, the application of rigid wall connections can be destroyed.Therefore, in the construction of wooden structures appropriate to apply a sliding bond.Such compounds help to a log (cobbled) walls and roof gradually adjust to such changes proportions.