BS 6399-2 PDF

Purchase your copy of BS as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available. The use of BS part 2:wind loads, for design of temporary structures (English ) Wind loading: a practical guide to BS , wind loads on buildings. PROFESSIONAL. Welcome. IP51S0LUTIONS. Thank you and welcome to ‘ BS Wind Loading – Practical Design, an IStructE seminar presented by.

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In the case of sections cantilevered from the ground or another plane surface, such as a roof, the length L should be taken as twice the protruding length.

The 6939-2 frictional forces should be added to the normal pressure 63992 in accordance with 3. Vertical or inclined sections may be taken as being divided into parts of length at least twice the crosswind breadth, L U 2B, and the reference height Hr should be taken as the height above ground of the top of each part.

Buildings falling outside these limits should be assessed using established dynamic methods. It is incorporated by Royal Charter. Scientific Data Management Research Staff.

BS Loading for buildings. Part 2 Wind loads | José García –

Advanced Search Watchlist Search history Search help. 63999-2 C informative Dynamic augmentation C. The resulting frictional forces should be added to the normal forces as described in 2. The reference height for the upper and lower part is the respective height above ground for the top of each part.

However, the reference height Hr is taken as the actual height of the top of the wall above ground. Remember me on this computer. At the majority of these stations, the average number of storms each year was about The design of flexible clad temporary structures.


The cumulative distribution function P representing the risk of a particular value not being exceeded was determined by the method of order statistics. It is inadvisable to take advantage of the shelter provided by woodland unless it is permanent not likely to be clear felled.

The width of each of these additional zones in plan is shown in Figure 41b. The directional method gives a more precise value b whether the methods given in this Part of BS do not for any given wind direction, particularly for sites in towns, and apply and the building should be assessed by one of the where topography is significant.

For the part of the roof below ba top of the parapet, external pressure coefficients should be determined in accordance with 3. Walls aligned exactly parallel to the wind give no resolved component in the wind direction. Services for libraries National interlibrary loan International interlibrary loan.

The effect of size is allowed for by a separate factor, Ca. NOTE 5 For pitched roofs with curved or mansard eaves, the values in this table may be compared with the appropriate values in Table 9, Table 10 or Table 11 and the least negative values used.

Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. NOTE 2 Bx for intermediate pitch angles may be used between values of the same sign.

Factor gt is given in Table 24 for various heights and building sizes. Part 2 now withdrawn which incorporated the considerable advances made and experience gained in wind engineering since that time.


As the fitted equations are empirical, it is most important that values of the parameters to the equations are restricted to the stated ranges, otherwise invalid values will be generated. Similar percentage changes would apply for different sizes and heights.

Owing to the asymmetry of this roof form, values are given for three orthogonal load cases: An intermediate view based on current design. However, a further ba around the base of the inset storeys should be included, as shown in Figure 18, where b is the scaling parameter from 2.

The pressure coefficient corresponding to the position of the recess should be applied to all the walls inside the recess. Three categories of and, in the standard method, by the size effect factor, to give terrain roughness are used to define the site exposure.

This procedure is recommended to determine the limit of topographic influence downwind of a cliff or escarpment.

BS 6399-2:1997

In this circumstance, the following apply. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Help Center Find new research papers in: Steep-pitched surfaces attached to the top of vertical walls are better interpreted as pitched roofs, falling under the provisions of 3.