Know the elevation of the top of the rail, the span of the plant, calculate the elevation of the top

It is not enough to provide the "plant span of 24m", what you also need to know is the column spacing of the plant rack, because:

1. For the problem of column top elevation, it is not enough to provide the span of the plant, but only to solve and determine the height of the roof beam. At present, the possibility of using concrete thin web beams in the 24m width factory building is very small, and the steel roof truss structure can generally be used. The roof truss structure can refer to the standard atlas, such as (05Q517), (09CJ20), (09CG12) and so on.

It is arranged along the direction of the column spacing of the row frame, and the size of the crane beam is directly related to the size of the column spacing.

3. To determine the elevation of the corbel, it is also necessary to select the relevant data of the crane track first.

Column top elevation h h1 h2; Rail top elevation h1 h1 h2 h3 h4 h5; Height from top of rail to top of column h2 h2 h7.

Plant height: refers to the distance from the indoor ground to the top of the column (or the low point of the sloping roof, or the bottom surface of the lower chord of the sunken roof truss).

The design standard of the industrial plant is formulated according to the structure of the plant, and the design of the plant is based on the technological process.

And the needs of production conditions, with filial piety to determine the form of the plant before designing.

1. The standard height of the plant is generally 5 6 meters, most of the plant is this height, if it is a single-story steel structure workshop, it must be more than 6 meters.

2. Industrial plants can be roughly divided into the following three types.

1) General production plant: a plant produced under normal conditions. Potatoes.

2) ** and fire hazard production plant: normal production or storage of ** and fire hazard plants.

3) Production plant in harsh environment: dusty, humid, high temperature or production plant with steam, vibration, smoke, acid and alkali corrosive gas or substance, and radioactive substance.

How to calculate the height of the factory building.

1. Plant height: refers to the distance from the indoor ground to the top of the column (or the low point of the inclined roof, or the bottom surface of the lower chord of the sunken roof truss).

2. Crane-free workshop: the elevation of the top of the column is usually determined according to the height of the large production equipment and the clearance height required for its use, installation and maintenance. At the same time, it is necessary to consider the requirements of lighting and ventilation, as well as to avoid the feeling of oppression brought to the space due to the large span and low height of the single-storey factory.

3. There is a crane workshop:

The column top elevation of the crane workshop can be calculated as follows: column top elevation h h1 h2; Rail top elevation h1 h1 h2 h3 h4 h5; Height from top of rail to top of column h2 h2 h7.

where: h1 is the height required to cross large equipment, indoor partition walls or maintenance;

H2 is the safety distance between the lifting object and the crossing object, which is generally 400mm-500mm;

h3 is the large height of the object to be hoisted;

H4 is the height of the sling manuscript, which is generally greater than 1000mm according to the size of the lifting object and the lifting method;

h5 is the small size of the hook to the top surface of the rail, which is found in the crane specification table;

h6 is the clearance size of the top of the crane beam rail to the top surface of the trolley, which is found in the crane specification table;

H+ is the safety distance between the lower chord of the roof truss and the roof surface of the trolley, and the sagging deflection that may occur when the lower chord and support of the roof truss should be taken into account.

and the impact on the normal operation of the crane when the plant foundation may produce uneven settlement. Small size of 220mm, collapsible loess.

The area is generally not less than 300mm. If there are other facilities such as pipelines hanging from the lower chord of the roof truss, the necessary dimensions need to be added.