What are inventory boards for fastening trenches?

When it comes to trench construction projects, stability and safety must be guaranteed. Using inventory boards to fasten trenches is a crucial step in this process. These boards, which are sometimes referred to as trench boxes or trench shields, are essential for safeguarding the workers and for fortifying the trench walls.

Most inventory boards are composed of sturdy materials like aluminum or steel. Their main purpose is to stop trench collapse, which is a serious risk when doing excavation work. These boards contribute to the integrity of the excavation site by giving the trench walls structural support, reducing the possibility of mishaps and injuries.

To accommodate varying trench dimensions and soil conditions, these boards are available in a range of sizes and configurations. Because of their simple installation and removal methods, construction workflow can be facilitated effectively. In addition to improving safety, properly placed inventory boards also increase the overall effectiveness of trenching operations.

Inventory boards not only increase safety but also adhere to safety regulations concerning excavation and trenching. When trenching is necessary on a construction site, these pieces of equipment are crucial for maintaining compliance with occupational health and safety regulations.

Inventory boards are essential for properly securing trenches in construction. During excavation work, these boards—also referred to as trench sheets or trench boxes—provide structural support and guard against soil collapse. This article examines their significance, how they keep construction sites safe, and the different kinds that can be used to suit the demands of different projects. Does this seem to be what you’re after?

What is strengthening the walls in this way?

Professionals refer to a ditch dug in the ground that meets specific parameters as a "trench." Its size could be determined by its intended use or technological specifications:

1. The laying of global pipelines is carried out taking into account the laying depth provided for in the design documents, however, there is a minimum value for this parameter – 70 cm.
2. The second important value is the width of the trench, measured along the bottom. It is determined by the diameter of the pipes laid in the mains. There is a special calculation formula for this.
3. There are two types of walls – vertical or inclined. The former, despite their inherent economy of time and effort, are limited to a depth of 2 meters due to the always existing danger of collapse. The less the soil meets the optimal requirements, the more significant it is. For wet soils there are restrictions even when digging sloping ditches – the greatest steepness is provided here. Inclined ones take up significant space and are used mainly in free areas. But in densely built-up conditions, diggers have to use the inherent advantages of vertical structures, while simultaneously leveling out their shortcomings or insuring themselves with the help of special devices. This is a more expensive, but also safer method of passing excavated meters.

The most popular kind of wall reinforcement among the various varieties is fastening with inventory panels. This could be a reference to metal frames or regular lumber planks. Because the latter come with screw spacers, they are far easier to use.

Why is this necessary??

Since there are usually other options available in the construction market, some of which are more expensive but less problematic, or which have a longer service life but require more time to install and secure, there are no compelling recommendations to use this specific type of strengthening for trench walls. The requirements of GOSTs and standards determine the urgency of the need rather than requests.

The following factors determine the remaining limitations and prerequisites for adhering to safety regulations:

• scientific observations on ergonomics,
• optimal size,
• characteristics of different types of soils and their behavior during excavation work,
• concern for the safety of the results of labor and working time already expended.

Collapsible structures are typically taken down from top to bottom, but there are instances where doing so would result in the structure being destroyed.

You may employ:

• boards,
• tongues,
• spacers,
• inventory boards.

However, the final category is more frequently utilized due to its indisputable benefits:

1. Convenience and safety in use.
2. Low cost (especially obvious in comparison with other methods); long-term practical testing on various soils: sandy loam, loam, clay, loess, bulk and even coarse clastic.
3. Mounting options after excavator or hand digging, directly behind tools, at short distances.
4. In trenches of varying widths and depths, up to 2 meters.
5. Work without fear on wet and unstable soils, so prone to landslides and destruction from the close proximity of natural waters that even ditches with sloping walls are fixed.

Without a doubt, the work must be completed following geodetic surveys, which provide a clear understanding of the type of soil at the digging site as well as the presence or absence of groundwater nearby. If work is in progress to implement a global project, this kind of requirement is provided for by regulatory requirements for the construction of structures for diverse purposes.

When constructing an apartment complex or a significant industrial object, geodetic calculations must be performed.

Requirements SP, SNiP

The nuances of the ground work required the creation of unique tools and standards governing their use. Workplace mishaps brought on by disregard for safety guidelines prompted the implementation of:

• regulations,
• building regulations (SP),
• construction codes and regulations (SNiP),
• state standards (GOST).

SP 45.13330.2017 is an updated and revised version of SNiP 3.02.01-87 that was made necessary by the adoption of new technologies.

These regulations were created to govern foundations and earthen structures alike. They have many regulatory allusions to GOSTs, which have been adopted in the last ten years, from 2010 to 2017, and they mandate that work be done by certified and qualified personnel in accordance with the approved design and quality control.

On all soil types, with the exception of rocky ones, fastening trenches with inventory panels no wider than two meters is acknowledged as the best approach to satisfy current requirements.

The set of normative guidelines, titled "Earthworks" and published with reference to SNiP IV-5-84, suggests measuring the area of walls that are fastened in pits and trenches. Inventory panels play a major part in this type of work.

When using this kind of strategy, Collection 02 "Mechanized and manual excavation work" lays out guidelines for material consumption and safety precautions.

Joint ventures and SNiPs designed for minimal volume and manual labor requirements may be applicable in the building of private land ownership projects. However, there are standard installation specifications that include spacing from ongoing operations, taking precautions because of the type of soil, and measuring the cubic meters dug in width and length.

What materials are they made from??

Screw spacers, typically composed of premium metal, are used to fasten trench walls with shields.

Their strength affects not only how well the shields press against the walls, but also how securely the fastening is fastened and how simple it is to disassemble the pipeline after it has been installed.

Shields, which were formerly only made of wood, can now be made of a variety of materials, and using them for this purpose has been proven to be both affordable and safe. The myth that shields are only made of wood or metal is out of date.

Other, less typical options exist.

Wooden

Wooden panels made from lumber can be used in ditches up to three meters deep on dense soils, as long as the space between the boards doesn’t get wider than the width of the material (the largest gap is 20 cm).

Waterproof plywood

Moisture resistant is a term that some sources use to describe complex materials. Its beneficial qualities are determined by its grade, thickness, and brand, all of which are derived from waste wood chips.

Furniture, packaging, and interior cladding can all be made with this building material. The features listed determine both its cost and its suitability for the intended industry.

With its enhanced strength and moisture resistance, laminated formwork plywood is a good choice if you need a higher level of water resistance, resistance, or dependability.

Bituminized cardboard

Made by compressing and impregnating bitumen with waste paper that has undergone specific processing.

The waterproofing qualities of the latter material are widely recognized. It is utilized in the building of panel homes, roofing, and insulation for ceilings.

Positive attributes without a doubt: resistance to air and water, strong protective qualities, and immunity to environmental factors.

Corrugated sheet material

Composed of bitumen-impregnated organic fibers. available in a variety of forms and applied differently depending on the roof’s visual style. Inventory shields can be successfully made from the least expensive variety.

What does the device consist of??

Commonality in the design of such devices is not excluded by features related to the sizes and materials used.

They are made up of three structural components:

• spacer frame,
• screws that allow you to expand its walls to the required width and at the same time press the fence against the trench walls,
• and the shields themselves, which are made from various materials depending on the necessary safety requirements.

Device technology

As soon as a section of the excavation is finished and the project has advanced a few meters, two spacer frames are lowered into the slit. All that’s left to do to secure the fence is to turn the screws once the shields have been lowered into the spaces created between the wall and the posts.

The kind of shield is dependent on a number of factors, but the ditch’s basic dimensions, cost, and the kind of soil used for excavation are always important considerations.

Common mistakes when creating

Commencement of work without first researching the properties of the soil:

• groundwater is not taken into account;
• limited width, which does not allow the installation of reinforcement;
• laying in a direction not specified in the design.

Due to the object’s simplicity, you have two options: either spend a lot of money on material that is unnecessary, or cut corners and use subpar material that doesn’t adhere to the complexity requirements. It needs to be calculated using an understanding of all the subtleties.

Price

Depending on the material used and the structure’s size.

Application The cost of one square meter of corrugated sheet material is 264 rubles, but you can shop around and compare prices at supermarkets and wholesale markets. Go for the most basic type of ondulin, devoid of any decorative elements.

Bituminous cardboard is sold by the kilogram, and the price drops as the weight of the item being purchased increases. The product’s thickness affects its weight. The cost for a half-ton purchase starts at 55.6 rubles and goes up to 160 rubles per kg.

The price of waterproof plywood can vary. The quantity, the cut made, the buyer’s residence, the sale’s region, the delivery method, and the grade all affect the price. A sheet can be purchased for as little as 200 rubles in cash.

See this section if you’re curious about the definition of a trench in construction, its composition, and development techniques.

Fastening trench inventory boards are essential parts of construction projects, fulfilling several functions that improve safety and productivity. These boards are intended to firmly hold trench sheets or shoring equipment in place. They are usually composed of sturdy materials like wood or composite materials. They shield workers from potential dangers and stop soil collapse by offering a solid foundation.

The fact that inventory boards can be used in a variety of trench configurations and depths is one of their main advantages. Whether a project calls for deeper trenches or shallow excavations, they can be readily installed and adjusted to meet the unique specifications of each one. This flexibility preserves the trench’s structural integrity, which not only increases efficiency but also guarantees adherence to safety rules.

Inventory boards have practical benefits, but they also make a construction site look better. Trenching supplies are kept out of the way and away from potential trip hazards by being neatly stored and secured. This organization not only increases output but also fosters a safer workplace by lowering the possibility of mishaps brought on by careless or disorganized use of equipment.

Utilizing inventory boards also shows a dedication to the highest standards of construction safety. Their presence on the job site shows that they are committed to worker welfare and industry compliance by taking proactive steps to reduce the risks involved with trenching activities. Using these boards in building projects therefore emphasizes a responsible approach to site management and operational effectiveness.

Video on the topic

Drainage shovel

Installation of concrete covering of silage and haylage trenches

Strengthening trenches with inventory shields

Support for pits