Flat Roofs In Timber | Explanation
Flat roofs in timber deserve little attention, although, in the minority of new work, they are still popular for extensions. Some of these roofs are really flat, which means the surface is horizontal.
Most of the rainwater has a falling or waterfall to take it to one side or to a storage center. We will discuss the actual horizontal roof sometime later.
What should we do to introduce fall (s) on a flat roof? Before we get started, the trees
The roof joists, which provide the main structural support, are properly called, although we simply call them joists – which is fine in the present case.
There are different ways of giving flat roof built-in wood fall:
(1) The roof joists supporting it are sloped down, which can be done by itself Routes:
(A) Joists end to end of slopes
(b) The joists are horizontal but each is set to a different degree to the adjacent joists
(2) Joists are placed horizontally and additional taper cut timbers are placed:
(A) On them to introduce the slope – Firing pieces
(b) across them to introduce slope – degradation fragments
(3) The upper surface of the joists is cut to the slope
(4) The structure is built horizontally but insulation is applied to the bearing surface
Fall (s) varies in thickness to give.
Figure 6.29 shows how these techniques can be used for roofs with a single slope
The edge of the roof. Only one indication is shown – these are not detailed sketches.
When the roof needs more than one ramp – which is set to fall – then the joists are usually
Layed horizontally and attached trees are arranged to provide multiple slopes where needed.
Watch this for a better understanding of the concept of Flat Roofs In Timber:
Modern requirements for the insulation of these roofs have brought about the idea that the roof shown in Figure 6.29 (4) is a good way to achieve multiple slopes.
Insulation is designed using the CAD 2 system and the 2 A CAD (computer-aided design) system allows designers to create a roof plan with all the keys. Dimensions (sometimes called CAAD – Computer-aided Architectural Design.)
This could be the input to another dedicated design system that calculates the shape of the entire series of insulation needed to close the roof and give the roof many falls.
Each block is cut from a machine that takes its data from a dedicated design system. Each block is counted and a diagram showing the sequence of laying is made.
At the beginning of the chapter, we defined a flat roof with a slope not exceeding 10◦.
And the slope of flat roofs usually falls across millimeters every 1000 millimeters. The angle that involves the ratio of vertical height and horizontal distance is called the natural tangent, i.e. between the slope and the horizontal.
Natural tangents for full-degree angles from 1 to 10 are listed in Table 6.1, and the flat roof slope gives readers some quick appreciation of what these slopes look like.
There are many different ideas on how to build a flat roof to provide Fall (s). The illustrations in Figure 6.29 show the deck, and with all the wooden roofing, it should As well as wood. The most traditional thing is the tongue and groove boarding –
Generally, flooring boards are simply nailed to the roof joists.
Depending on the centers of joists, 20-22 thick boarding is usually sufficient. On top of this deck, a waterproof layer was built through the first washing roof. Do not stick any more layers on top with wood and then hot bitumen. The roofs of this old feeling had a surprisingly long life when experts put it but only if the pitch was kept as high as possible.
Not the flat roofs, but the author is familiar with several of the roofs laid out in the 1960s.
More than 20 years with only minor repairs. The company that put them in has offered a 20-year warranty on their work. This is not done today despite the ‘advances’ made in bituminous filt technology – polymerized bitumen and all the rest.
The old ceilings were not isolated, and what was between the occupied and the great British weather was felt on the deck, followed by the distance and the simple ceiling where the joists ran. As heating fuel has increased in cost, insulation has been thought of a lot – if not a lot, many of us have spent hours sorting out insulation problems in new and existing roofs.
The problem lies with the fact that one side of the insulation layer is warm and wet and the other side is cold and if the moisture comes through the insulation it becomes wet due to freezing.
High humidity levels cause rot and increase insect attacks on wood, so flat roofs were rotting everywhere.
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