The most important. Kosoury from what profile? Through the size and weight of something to calculate? Be prepared that with such drawings at the construction site they will supply what is at hand.

Further. If the steps are according to GOST, why draw them? I don’t remember if there are mortgages in them from below or not, but if not, no one will most likely put them there for you, especially since in some cases there are loops for slinging. And the absence of loops must again be specified in the drawings and agreed with the installation organization. And why these mortgages? Weld a step? I have never seen them welded, they just put one on top of the other and that's it. And again, you don’t have this node and it’s not written anywhere, so they won’t even think about cooking at the construction site.

On the reinforcement of the sites for positions 1 and 2, show the distribution of reinforcement with arrows, although if the number and pitch are calculated normally, then you can do it, but for clarity I would put it from the “fool”, and they are in SPDS.

On the reinforcement near the beam there is some kind of tricky brand (brackets like this, brackets like that). If you want this - explain in the OD. If they differ only in mortgages, they would make 1 drawing with all mortgages and a positional callout, for example, “Zd-1 only for Bm-1”. What does “l” (staircase?) mean in the brand in brackets is not clear and why in brackets and why at all.

In general, forget about the mortgages in the steps, indicate which channel for the stringers and everything will be ok. The main thing is that the stringers are properly selected, and the foreman himself will deal with the rest at the construction site. =)

Yes, now such foremen come across (not very smart). you give them detailed drawings, they will still "terarize" with their calls for half a year anyway. And thanks for the comments.

And as for the steps to put one on top of the other, not a single examination in the seismic region can be allowed. (Especially in this case 9 points)

From which profile of the kosour is indicated in the specification on sheet KZh-61, drawings are also given there.

Thanks for the comments.

A couple more notes:
1. When reinforcing a landing, if 20 mm is indicated to the reinforcing bar and it is drawn in one line, then it must be indicated that this protective layer reinforcement, not the distance to the center.
2. If fences are indicated, then there are no attachment points.
3. In such a situation, as you have, this is not QOL, but KR for both metal and concrete.
4. There is no need to indicate the size and composition of floors that are not related to the stairs.
5. If there are holes in the embedded parts, you must also indicate the diameter of the holes, otherwise, judging by the drawing, there are two D18 holes and 22 mm between them in the light - it’s somehow strange :) according to the calculation, did you look at the arrangement of the bolts? The metal in the section is shaded (well, maybe I don’t show hatching without SPDS? :)).
6. What is the point of drawing a serial step if this is not a separate task for a precast concrete plant with its own parameters that are not in the series? Moreover, the method of installing embedded parts in a step excludes the execution of this operation on finished steps (so to speak, "in place"). And there is no step reinforcement in this case.
7. Sheets are not numbered like this - there is a separate column in the "SHEET" stamp. Stages of R.P. no longer, and it is written RP, and for this stage, by the way, everyone constructive solutions brand KR (again).
8. Notes from sheet 62 must be transferred to the first sheet - where general data and general instructions for erecting / manufacturing / installing a structure, etc.
PS. The foreman at the construction site does not know which one will fall, so rely only on yourself.

I looked at the I-beams on the stringers. It's true. But why the hell did they settle in the "Step Specification"? What position, what designation?
What is "14-B"? If it is a beam, then B1, for example. Better indicate according to STO ASChM 20-93. Although not the point.

About seismic perhaps - did not meet. =) Then give a node where the top steps are welded to the stringer, for good night, and then an unsubscribe in the explanation that they say to cook everything and everything is so ...

On sheet 58 at the west. positions were not taken out in special as at 60.
There are 61 sheets on the sheet in the rear. from steel C345. What for? But on the 58th corner is not indicated at all - you will get C235.

Umka, steps, by the way, in GOST there are both “concrete” and “reinforced concrete” so to reinforce them or not is a master's business. But I prefer to give w.b.

I'm not nitpicking, they just asked the races, then my thoughts. Good luck.

Thanks for the comments. I will answer the following comments:

1, I agree with you. You could have added some notes.
2, also agree. but I considered it a trifle and did not show (the builders themselves will figure it out without a drawing)
3, I agree, you yourself probably know what kind of lazy architects we have, designers have to do 50% of the work for them. but the fact that in the QOL section I showed metal structures, according to GOST 21.501-93 in the QOL section it is allowed to show metal structures subject to the conditions of Appendix 14 (see at the end of GOST)
4, also agree. This is information for the foremen, whatever once again didn't ask.
5, Everything is shown on the embedded parts as expected (apparently you do not have SPDS)
6, According to GOST 21.501-93 Appendix 16, if you put additional embedded products in prefabricated reinforced concrete products, then the designer is obliged to draw a formwork drawing of the product, plus show the embedded parts.
7, I agree with the remark. (The architect numbered the AP, and so did I.)
8, Notes can be transferred, but as you can see, I don’t have a place there.

Thanks again for the comments.

When not one floor is planned in a residential building, but two or three, it is imperative to think over the design that will lead to the upper tiers. Drawing metal stairs, created on the basis of measurements, will help facilitate the work and make the arrangement process accessible.

Schemes and drawings of metal stairs

The design of the metal staircase has all the necessary safety and durability parameters. That is why they often rely on this type of product. The metal is practically not subject to corrosion, advantageously emphasizes the style of the room and brings rigor and elegance to the design. Looking at the wide variety of metal stairs offered, one can understand that even a person who does not have experience in such incarnations can make them with his own hands.

The most important thing is to choose a design that will be feasible to draw, prepare and install in the space of the room or outside it.

Advantages

Flaws

1. One of the disadvantages can be called the bulkiness of gangways and railings. But thanks to the skills of modern developers, you can easily choose a scheme that will best match the load for a particular room.
2. Some curves and decorative elements difficult to implement without special skills.

Based on the priorities and disadvantages of the material and design in general, one can bet in favor or against such a decision.

Metal staircase on stringers

It is much easier to make a drawing of a metal staircase if the structure is equipped with stringers. This is due to the fact that you need to calculate the distance for each step and prepare the material, which will subsequently be fixed to the base. Stringers are the base (base) in the form of a future staircase.

It can be made from different materials and be fixed as required by the premises. Of course, measurements are still required to purchase suitable stringers.

After all, the design must fit the parameters of the space allocated for the stairs. A ladder on metal stringers will help even inexperienced craftsmen to complete the installation task.

The main thing - correctly with a mark of the place where the gangway will be located. And also have at hand the tools and materials necessary to implement this idea in your own home.

Advantages

Due to the fact that gangways equipped with stringers have earned their calling, the positive aspects of such a solution are obvious:

• This makes the work process easier;
• Allows you to easily organize the order of actions;
• Such designs are strong and durable;
• Thanks to the stringers, even an inexperienced specialist or just the owner of the house will be able to realize his plans and make it a reality;
• This element allows you to devote more time to details and design experiments that will decorate.

These are far from all the positive aspects of the stairs on the stringers; each owner of a private house finds his own independent advantages.

Flaws

It is necessary to correctly determine the size of the base for the steps so that the design fits clearly into the interior. It is easy to make such calculations. Simply measure the height, angle and width of the desired installation.

How to draw a metal staircase drawing

Make your own drawing of a metal staircase with my own hands simple enough. To do this, you need to measure the space in which the steps leading to the second floor will be located.

Required materials for measurement

In order to carry out the measurement of space, the following accessories should be at hand:

• Roulette with maximum length;
• Surface level gauge;
• Chalk or a special felt-tip pen with which you can make the necessary marks on the wall, floor and ceiling.

it minimum set accessories that will help you quickly and efficiently carry out the measurement process.

Required materials for the drawing

To make the scheme as accurate and correct as possible, you should also prepare a number of stationery items. Namely:

• Sharpened pencil or black marker with a thin rod;
• A sheet of paper or whatman paper;
• Ruler;
• Compass.

The diagram should be drawn carefully and accurately so that during the direct installation process, errors that are difficult to correct are not made.

What parameters need to be measured

In order not to miscalculate and correctly make a drawing with your own hands, you will need to make the following measurements:

After taking measurements, you can transfer the recorded parameters to a sheet of paper, forming a diagram of future gangways.

What nuances must be taken into account in the process

When taking measurements, be sure to Special attention the following factors:

What are metal stairs

It happens differently, but each of them is worthy and we often choose. The designs of metal stairs are:

Stairs - bearing structures buildings serving for vertical communication between floors. When designing a staircase made of prefabricated reinforced concrete steps along steel stringers, it is important to pay special attention to the interconnection of the individual parts of the staircase.

If the supporting structures of the flight of stairs and the interfloor platform are channels, then they can be connected using a mounting element from a hot-rolled corner, to which the supporting structures are attached by welding.

With the help of standard parts from the SPDS GraphhiCS database, you can quickly draw the junction of the stairs to the interfloor platform (If you have not installed this program yet, you can do this using). The drawing created in this way in AutoCAD will be dynamic, that is, it will be easy to make changes.

See the video for more on this.

In this article, we will get acquainted with the interface of the LIRA program, and also perform the calculation of a beam on two supports with a uniformly distributed load. Commands of the lira program discussed in the lesson: Selecting a feature of the scheme Creating a new file Arranging nodes Creating rods Setting restraints Assigning stiffnesses Applying loads Static analysis Reading calculation results Saving the calculation file. See the video tutorial for more details. […]

When designing the stairs, materials of Series 1.050.9-4.93 were used. The width of the flights of stairs is 1.2m. Steps are taken according to STB 1169-99 L=1500mm.

.dwg format

Design Description

Stringers are accepted according to Series 1.050.9-4.93, issue 3, wall and frontal beams - according to Series 1.050.9-4.93, issue 3

Elements interface nodes - according to Series 1.050.9-4.93 issue 0-1.

In the order for steps, it should be stipulated that in all main steps LS-12 and LS-15 there must be embedded parts M 1 for attaching racks stair railing taking into account the option of stairs with a rise in a clockwise direction. Landings are designed according to Series 1.050.9-4.93, issue 0-0. BNB 5.03.01-02

Stringers fasten to platform beams with M16 bolts. After checking the correct position of the mounted structures, the nuts of the bolts must be fixed by welding them to the bolt shaft, or by driving the threads.

Welding should be carried out with E-42 electrodes hw = 6mm according to GOST-5264-80.

Cover stringers and beams with steel woven mesh 1-R-12-1.6 GOST 8536-80 and plaster cement-sand mortar M50 25 mm thick.

Beams are based on r / d installed on a monolithic belt

SERIES 1.450.3-7.94 Issues 0, 1, 2 in .dwg format

STEEL STAIRS, LANDINGS, Ladders AND FENCES FOR INDUSTRIAL BUILDINGS OF INDUSTRIAL ENTERPRISES

Release 0.

MATERIALS FOR DESIGN

Issue 1.

STRUCTURES FROM COLD-FORMED PROFILES. DRAWINGS KM

Release 2.

STRUCTURES FROM HOT ROLLED PROFILES. DRAWINGS KM

This digitized series perfectly matches the original

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Developed series 1.450.3-7.94 "Stairs, platforms, ladders and steel railings for industrial buildings industrial enterprises consists of the following releases:
issue 0. Materials for design
issue 1. Structures from cold-formed profiles. KM drawings
issue 2. Structures from hot-rolled profiles. KM drawings
This issue 0 contains a description of the installation of steel stairs, platforms, ladders and railings for them, the necessary information for their correct installation and operation, as well as layout diagrams and the range of stairs, platforms, ladders, fences and additional elements.
1. PURPOSE AND SCOPE
1.1. Steel stairs, platforms, ladders and railings are designed for operation inside and outside heated and unheated buildings of industrial enterprises and engineering structures erected and operated in areas with snow and wind load
I... according to SNiP 2.01.07-85, non-seismic and with design seismicity up to 9 points; with an estimated outdoor air temperature of minus 65°C and above; with explosion-proof categories of production; with non-aggressive and weak degree of aggressive environmental impact under normal temperature and humidity conditions according to SNiP II-3-79.
1.2. Ladders, platforms, step-ladders and fences can be used as in-shop, incl. for service technological equipment, for arranging landing sites for overhead electric cranes, as outdoor evacuation and fire-fighting cranes, with minor modifications for servicing steel tanks up to 18 m high, for servicing vertical and horizontal heated and unheated apparatuses and vessels with a diameter of up to 20 m and as bridges for servicing electric lamps .
2. TECHNICAL DATA
2.1. The main parameters of flights of stairs and landings, as well as the maximum permissible loads they are accepted with an overload factor of 1.2 in accordance with the requirements
SNiP II-23-81 and SNiP 2.01.07-85 and are given in Table. 1.2 of this explanatory note.
2.2. Layout diagrams of structures and docking units are shown on sheets 1-13 of this document - KS.
2.3. The width of flights of stairs and platforms in accordance with the requirements of SNiP 2.01.02-85 and SNiP 2.09.02-85 are two sizes 700 mm and 900 mm. The angle of inclination of flights of stairs is 45° and 60°.
2.4. It is possible to lift flights of stairs both on metal and reinforced concrete platforms and ceilings.
There are three options for fastening structures by tiers:
I - support of flights of stairs and platforms on the supporting structures of the building;
II - a flat vertical truss created by flights of stairs and landings, pinched at the base and free at the top, is connected by belt-columns and additionally unfastened by ties with a step of no more than 9 m with the walls of the building. The option can be used for arranging fire and evacuation stairs.
III - a flat vertical truss created by flights of stairs and landings, pinched at the base and along the upper tier, connected by a belt-column. The option is recommended for arranging landing sites for overhead electric cranes.
For options II and III height the rise of flights of stairs is assumed to be 3.6 m. The height of the platform marks can be adjusted by changing
the height of the first march (modulus of increase 0.6 m) and due to the change in height relative to the zero mark ± 0.3 m.
2.5. When operating stairs, platforms, ladders and fences in areas with a seismic activity of 7 ... 9 points, it is necessary to provide for: floor-by-floor cutting that does not affect the rigidity of the building frame, the use of anti-seismic seams, the gap between structures and walls and the building frame is at least 20 mm.
2.6. The parameters of vertical fire escapes and ladders comply with the requirements of SNiP 2.01.02-85 and are accepted with a width of 700 mm. In the lower tier, the structures rest on the foundation and are connected in height at a distance of no more than 9 m additional elements with the walls of the building.
2.7. The option of installation and selection of a set of structures is determined by the designer, taking into account the following - ceteris paribus:
for light buildings metal structures it is recommended to use stairs, platforms, ladders and railings made of cold-formed profiles as they are lighter and create less load on the building frame and foundation;
structures from hot-rolled profiles can be manufactured in construction conditions, structures from cold-formed profiles are usually manufactured at specialized enterprises.
3. TECHNICAL REQUIREMENTS
3.1. The material of structures operated in areas with an estimated outdoor air temperature: up to minus 40 ° C should be of group C235 in accordance with GOST 27771-88, up to minus 65 ° C of group C255 in accordance with GOST 27771-88.
Z.2. The structures must have an anti-corrosion coating in accordance with the requirements of GOST 9.402-80, GOST 9.401-91 and SNiP 2.03.11-85.
3.3. Substitutions of materials are allowed in the structures:
to cover the steps of stairs and platforms, it is possible to use hot-rolled corrugated steel in accordance with GOST 8568-77 and grating type "Bataysk" in accordance with TU 36-2044-77.
for load-bearing elements of structures, it is possible to replace them with rolled products or profiles with similar or higher strength indicators.
The layout of structures from cold-formed and hot-rolled profiles is possible.
3.4. Packaging of structures should ensure the safety of the protective decorative coating. Transport packages should weigh no more than 3.5 tons. Structures should be stored on linings in stacks no more than 2 m high. Additional elements are stored in boxes. Storage conditions 7 according to GOST 15150-69.
3.5. During installation and loading and unloading operations, the structures are slinged "in the girth" using protective pads to preserve the decorative coating.
4. INSTALLATION
4.1. When developing installation drawings for a design organization, it is necessary to be guided by exemplary wiring diagrams, nodes and nomenclature of this issue.
4.2. The calculation of foundations for a selected set of structures according to the options for fastening is carried out by a design organization that applies structures on a specific construction site.
Structures fastened according to option II (external mid-flight evacuation and fire stairs) are designed for maximum loads on stairs with a height of 22.2 m, taking into account that:
wind load transferred to the foundation through flights of stairs;
vertical constant useful and snow load transmitted through the backbone.
Structures fastened according to option III (ladders for landing sites of overhead electric cranes) are designed for live loads
3.0 kN/m² (300 kgf/m²) with a ladder height of 15 m.
The fencing of stairs and platforms is designed for short-term loads provided for by SNiP 2.01.07-85 and GOST 12.4.059-89.
Vertical fire escapes are designed according to the maximum loads on ladders with a height of 20.1 m (wind load and own weight).
4.3. The connection of the elements of stairs, platforms, step-ladders and fences is made on bolted joints and mandatory welding of articulated links.
It is not allowed to form a reverse slope of steps more than 1 °
when installing stairs.
The railings are assembled on site (including left and right versions). Docking of handrails, strings and borders with each other is carried out by welding with fitting the joint in place.
Fastening of ladder railings to the frame of ladders and docking of racks is carried out on bolts.
4.4. Mounting features are indicated in the nodes.
4.5. Installation of a set of structures must be carried out in accordance with the requirements of SNiP III-18-75 and taking into account the safety requirements of SNiP III-4-80
5. SYMBOLS OF PRODUCTS
5.1. A set of structures, depending on the rolled metal profiles from which it is made, has the following indices in its marking:
X - cold-formed profile;
G - hot-rolled profile.
5.2. Depending on the operating conditions, the steps of the stairs and the flooring of the platforms are made of:
F - steel sheet with rhombic corrugation;
B - steel sheet expanded metal;
R - bands on the edge and round steel (VISP type).
Examples of brand decoding are given in the corresponding nomenclature for stairs, platforms, ladders, fences, additional elements.