Wind Load Worked Example How To Estimate This

This calculator is a demonstration version, with reduced capabilities, of the full size Comprehensive Window Glass Design program, a freestanding Windows application developed by Standards Design Group, Inc.

Notes: Not all glass types are manufactured by Pilkington North America, Inc.

Maximum glass deflection and edge pullout under the design load should always be considered.

Glass must be selected and designed to conform with applicable Safety and Building Code Requirements.

For a copy of the full ASTM E 1300 Standard, write to ASTM, 100 Bar Harbor Drive, West Conshohocken, PA, 19428, or see the web site at.

Examples of components include fasteners, purlins, studs, roof decking, and roof trusses and for cladding are wall coverings, curtain walls, roof coverings, exterior windows, etc.

No one would want to live in a building easily swayed by gust.

Wind Load Worked Example How To Estimate This

In order to do so, guidelines on how to estimate this load is indicated in each local code provision.

In this section, we are going to demonstrate how to calculate the wind loads, by using an S3D warehouse model below.

Users would need to conduct manual calculation of this procedure in order to verify if the results are the same with those obtained from the software.

Moreover, we will be using the Directional Procedure (Chapter 30 of ASCE 7-10) in solving the design wind pressures.

For this example, since this is a plant structure, the structure is classified as Risk Category IV.

See Table 1.5-1 of ASCE 7-10 for more information about risk categories classification.

When viewing the wind maps, take the highest category number of the defined Risk or Occupancy category.

From Figure 26.5-1B, Cordova, Memphis, Tennessee is somehow near where the red dot on Figure 3 below, and from there, the basic wind speed, (V), is 120 mph.

The description of each exposure classification is detailed in Section 26.7.2 and 26.7.3 of ASCE 7-10.

To better illustrate each case, examples of each category are shown in table below.

Shorelines in exposure D include inland waterways, the great lakes, and coastal areas of California, Oregon, Washington, and Alaska.

A helpful tool in determining the exposure category is to view your potential site through a satellite image (Google Maps for example).

This is shown in Table 26.6-1 of ASCE 7-10 as shown below in Figure 4.

For this example, since the wind pressure on the windward side is parabolic in nature, we can simplify this load by assuming that uniform pressure is applied on walls between floor levels.

The plant structure has three (3) floors, so we will divide the windward pressure into these levels.

Moreover, since the roof is a gable-style roof, the roof mean height can be taken as the average of roof eaves and apex elevation, which is 33 ft.

For our example, external pressure coefficients of each surface are shown in Tables 6 to 8.

Results of our calculations are shown on Tables 8 and 9 below.

Take note that there will be four cases acting on the structure as we will consider pressures solved using ((GCpi)) and ((-GCpi)), and the (Cp) and (-Cp) for roof.

Sample of applying case 1 and 2 (for both ((GCpi)) ) are shown in Figures 7 and 8.

The wind direction shown in the aforementioned figures is along the length, L, of the building.