How to put the rafters , or why it is necessary to teach algebra in school?

How to expose the rafters?

For those who are superficially acquainted with the basics of building, but going on their own to figure out how to put the rafters, you need to spend a little time and read the information.Rafters - is the cornerstone for any pitched roof, at first glance, a complex system of beams, pillars and other wooden structures, which are locked in position with each other, and it is absolutely logical, therefore, to deal with this difficult.Well posed system will allow then to do some improvements in order to transform the home.

Depending on the distance between the walls, that you are going to cover the roof, rafters can be of two types: naslonnye and hanging.The first is based only on the walls, while the latter require intermediate supports.Naslonny type is characteristic of the covered width of not more than 4.5 meters, while hanging by intermediate supports can extend up to 12 square meters.Anyone who wants to learn how to put the rafters, video and detailed instructions is available right now.

How to put the rafters - Patience and a little effort

Armed with a tool for cutting wood beams, screws or nails (to fasten the corners for fixing the beams), and a couple of assistants, you can start the calculations and directly to work.To calculate how to expose the rafters, it is necessary to recall the mathematics and the Pythagorean theorem.First, prepare podstropilnye beams, they should uphold the wall 50 cm. Cut the beam and placed on the wall at the same distance from each other.

All wood construction for durability treatment composition against insects, fungi, and aging.

now defines the height of the roof, that is, the distance from the ridge beam to podstropilnoy (h), parameter is rather arbitrary, depending on your preference on the corner of the roof.Now calculate the length rafter, it is here that algebra and need to learn how to put on the house rafters.The length of the legs is equal to the square root of the sum of h2 + d2, where d - the distance between the half bearing walls.Considering this value, saw off two boards of this length.

Then place on any flat surface and cross our board at one end, so that a triangle without reason, that is, the two ends at the same point (top), and the other two ends of the breed at a distance 2d (ie, the width of the house).The following measurements will help you understand how to align the rafters.

at all points of the divorced is metered 2d, anchoring the structure and connect extreme points of the thread in a straight line.According contour thread directly on the board hold a pencil line , marking the angle, which will need to be cut.Just from the top of the crown omit a thread perpendicular , rather it draws on the board to place the legs differences.

Now, nothing is moving, sawing on markings .We have two identical rafters.Cut the leg rest, as obtained using the preform.

How to put the rafters or recall children's constructors

continue to work hard already directly with the installation of the frame for the roof.Pairwise legs folded in a triangle between the need to fasten a wooden crosspieces : one - almost at the top of the second - about the middle of the triangle.

resulting structure should be set to a beam and fasten them there with metal corners.For strength, if you have long rafters, it is possible to fasten each pair still two rack that will provide additional support and give rigidity.You need to install them so that they were attached to the foot somewhere in the mark length 1/3.These additional supports also fix the corners.

This is the easiest option, how to put the rafters.Suitable when you want to cover a small area of ​​simple shapes.Any complication of the conditions, whether it be size, shape, number of separate compartments, will cause the appearance of additional elements and complexity mounts and preparation will increase.During the construction of this building element can immediately think of roof insulation, especially if the house is built for permanent residence.