Specific procedures for the design of stairs The data should be calculated concretely

Rules for calculating stair quantities.

1. Staircase engineering quantity.

cast-in-place staircase area; , stair railings, railings; Staircase decoration: staircase side decoration; Decoration of the bottom surface of the staircase. Stair formwork.

2. Staircase quantity calculation method.

The horizontal projected area of the staircase.

The cast-in-place concrete staircase is calculated according to the dimensions shown in the design drawing and the horizontal projection area. Stairwells with a width of less than 500mm are not deducted, and the part that protrudes into the wall is not calculated. The horizontal projection area of the stair includes treads, diagonal beams, rest landings, landing beams, and beams connecting the staircase to the floor (the division of the stair and the floor is delimited by the outside side of the stair beam).

When the integral staircase is connected with the cast-in-situ floor slab without ladder beam, the last tread edge of the staircase is bounded by 300mm.

, stair railings, railings;

Steeplechase is calculated by area or volume.

Steeplechase volume Steeplechase area Steeplechase thickness calculation.

Steeplechase area Steeplechase length Steeplechase height calculation.

The railing length is the actual length of the staircase, i.e., the diagonal length.

Railings are calculated by length or tonnage.

The length of the railing is calculated based on the actual length of the staircase (i.e., the ramp length).

Staircase decoration: staircase side decoration; Decoration of the bottom surface of the staircase.

The staircase decoration is calculated based on the horizontal projection area of the staircase (including treads, rest platforms and stairwells within 500mm) according to the dimensions shown in the design drawing. When the staircase is connected to the floor floor, it is counted to the inner edge of the ladder beam; If there is no ladder beam, add 300mm to the edge of the tread of the top layer.

Staircase side decoration = tread side area + ladder side area.

Wherein: tread side area = 1 2 * tread width * tread height * number of steps; Ladder side area =

Staircase slope length * ladder plate thickness.

Decoration of the bottom surface of the staircase = the area at the bottom of the staircase.

stair formwork = stair side mold + stair bottom form; Calculate the area with the decoration.

The maximum height of the public staircase tread shall not exceed 175, the minimum width shall not be less than 260, the floor height shall be more than 2800mm, the width of the stair stair shall not be less than the net width of the stair run, and shall not be less than meters, and the net width of the residential staircase shall not be less than one meter (with a railing on one side). The specific design parameters are as follows: 2700 16 = tread height, tread number 16 steps), tread width 280, gradient according to the net width of 1100, rest platform width 1200

Big brother, do you know how many detailed steps there are, typing will exhaust a cow.

I'll tell you that you can turn this book yourself, and it's more detailed to learn this way.

There is a chapter in "Housing Architecture" that talks about stairs, published by Wuhan University of Technology, which is very good, and it was our textbook at that time.

No, such a simple question is asked here, staircase design is a very living thing, the data in it is very arbitrary, it depends on the individual's ideas, as long as it does not exceed the regulations, the specific ones are not to be said, and the steps and calculation process will be tiring to death.

Do you want to design the steps of a staircase?

Use the depth to subtract two rest platforms.

The height of the floor divided by the height of the tread is in line with the design requirements, and the specific formula is forgotten.

The height and width of the staircase, the length and width of the staircase, and the width of the landing are calculated according to the opening, depth, and height of the stairwell.

Note: It is best to take an even number of steps on each floor of the double-run staircase, such as 18 steps for the height of the 3m floor, the step height is, and the total height error is less than 5mm, which can be adjusted during construction.

2.Sketch the ground floor, second floor and top floor plan of the staircase according to the above dimensions.

3.Determine the stair structure and construction scheme.

1) Flight form: plate type or beam plate type (rectangular ladder beam or zigzag ladder beam), buried step or no buried step.

2) Platform beam form: equal section or variable section.

3) The arrangement of the platform plate: parallel to the platform beam or perpendicular to the platform beam.

4.Draw a stair section and dimension it as required. According to the calculated number of steps and the height of the step, draw the profile contour line of all steps at first, and then according to the selected structural formula, draw the plate thickness of ladder beam height or plate type flight section, determine the connection mode with platform beam (buried step and non-buried step).

Draw the platform beam, and finally arrange the platform plates on both sides (the width of the platform plate refers to the local atlas, and the layout board needs to be calculated and the plate seam treatment needs to be done), and finally the end wall and doors and windows are drawn.

5.According to the adjusted size of the section drawing, draw the floor plan of the ground floor, the second floor and the top floor of the staircase, and mark the dimensions according to the above requirements.

6.Finally, the profile is refined.

1. The slope of the staircase:

The determination of the slope of the staircase should take into account the factors of walking comfort, climbing efficiency and spatial status.

The connection of the points at the leading edge of the step at each level of the run is called the slope line. The angle between the slope line and the horizontal plane is the slope of the stair (the tangent of this angle is called the gradient of the staircase). The slope of indoor stairs is generally 20 degrees to 45 degrees, and the best slope is about 30 degrees.

Stairs with special features require different slopes. For example, the slope of the ladder is more than 60 degrees, the special staircase is generally 45 degrees to 60 degrees, the slope of the indoor and outdoor steps is 14 degrees to 27 degrees, and the slope of the ramp is usually below 15 degrees. Generally speaking, the slope of the staircase should be gentler in places with larger, higher safety standards, or more abundant area, and the auxiliary staircase that is only used by a few people or infrequently used can be steeper, but it is best not to exceed 38 degrees, except for personalized stairs or spiral stairs that can be selected because of space.

Outdoor stairs without permanent roofs and outdoor steel stairs and ladders used for maintenance, fire protection, etc., are not considered as building area.

Outdoor staircases with a permanent roof should be calculated as 1 2 of the horizontal projection area of the natural layer of the building.

The height of the floor is the area of this staircase, and the length * height is the same.

The calculation of the staircase is as follows:

1. The calculation method of the volume of the staircase is round bird rolling: the volume is equal to the volume of the tread plus the volume of the floor slab. Railing Calculation Method:

Generally, it is calculated according to the length or weight, and the length of the railing is calculated according to the actual length measured in the year. Calculation method of stair side: the decoration area is equal to the side area of the tread plus the side area of the floor slab.

2. If you want to calculate the slope of the staircase, you need to calculate the inclination angle, and there are two ways to represent the slope, one is the angle method, for example, the slope of the staircase should be more than 23 degrees, but it cannot be higher than 45 degrees. Workers will generally arrange orange Yu at about 30 degrees during construction, because this angle is the most comfortable. If it is above 45 degrees, it is more difficult for people to climb the stairs.

3. If you want to calculate the size of the step, generally speaking, the width should be more than 250 mm, but not more than 320 mm, otherwise it will be too wide. The size of the tread can also be determined according to the relevant formula, for example, to know the height of the ground, but also to know the width.

4. Calculate the width of the staircase, according to the total number of people going up and down the stairs, as well as the requirements of fire protection. In the case of a dwelling, the width should be more than 1100 mm.

5. The height of the stair railing handrail ensures that people will not fall down when standing at the staircase, generally speaking, the height of the stair handrail should be about 900 mm, and if it is a stair handrail on the platform, the height can not be less than 1000 mm. As a place for children, such as the handrail of a kindergarten, it can be increased by 600 mm to ensure the safety of children.

Here's how stairs are calculated in general:

1. Calculate the number of steps: first of all, you need to confirm the total height of the stairs and the height of each step, and then divide the total height by the height of each step to obtain the number of steps. For example, if the total height of the stairs is 300 cm and the height of each step is 15 cm, the number of steps is 20.

2. Calculate the step size and step depth: the step size refers to the length of each step, and the step depth defeat refers to the horizontal distance from the front of the step to the back edge. In general, in the case of rolling die trembling, the step length plus twice the step depth is equal to 600-650 mm, where the step length should be greater than or equal to 280 mm, and the step depth should be greater than or equal to 140 mm.

3. Calculate the slope and slope of the staircase: the slope of the stair refers to the inclination angle of the staircase, and the slope refers to the ratio of the height and step length of each step of the staircase. In general, the slope of the staircase should be between 30°45° and the slope should be between.

4. Calculate the width and height of the staircase: the width of the staircase should generally be more than 900 mm, and it needs to meet the requirements of the staircase passage. The height of the staircase should generally not exceed the meter, and if the meter is exceeded, a platform or a reversing platform needs to be installed. <>

To sum up, the calculation method of stairs involves the comprehensive consideration and design of multiple parameters, and reasonable calculation and design need to be carried out according to the specific situation to ensure the safety and comfort of the staircase.