We make a columnar foundation for the veranda of the house with our own hands

A veranda is a great way to expand your living area and create a comfortable outdoor space in your home. laying a strong foundation is one of the first steps in building a veranda. For this project, a columnar foundation is a great option because it is simple, affordable, and offers great support.

We’ll walk you through the process of building a columnar foundation for your veranda in this article. Whether you’re an experienced do-it-yourselfer or a novice, our detailed instructions will help you finish the project with assurance.

Everything will be covered, including selecting the ideal site and supplies as well as drilling the holes and positioning the columns. You’ll have a strong foundation that will support your veranda for many years to come by the time you finish this guide.

Design features and application

The foundation appears as a row of columns over the whole extension.

The pillars, which run the length of the structure, are strapped, and logs are fastened to the interior supports.

Financially speaking, pillars provide an economical base for a veranda in terms of consumables.

Additionally, because the structure is lightweight, it is simple to install and appropriate for any kind of soil.

Drawbacks:

1. Only low and light buildings can be erected on a columnar foundation;
2. such a base does not allow for complete insulation under the veranda.

Typically, a columnar foundation constructed out of:

• wood;
• metal;
• bricks;
• concrete with cladding made from various natural materials;
• cinder block.

Made from concrete

This design works well in regions with sandy, dry soil. When using concrete supports, the reinforcement box should be fixed inside the formwork using concrete mortar, and the formwork should be secured with wooden boards.

Take note! Formwork is an auxiliary structure that provides the structure with shape, geometric dimensions, and surface structure, among other characteristics. Usually made from planks of wood.

The most costly and labor-intensive foundation is made of concrete, but the outcome is worthwhile. An at least 6×4-meter brick or wooden terrace can be supported with ease by a columnar foundation.

From building stone

For regions with dry, sandy soil and low soil water levels, building stone pillars are the ideal option.

Such a foundation can function for several centuries. Building stone is utilized in the same way as brick.

The amount of soil that freezes during the winter months determines the height of the foundation based on the local climate.

Building a stone columnar foundation frequently requires appropriately reinforcing the supports. In this instance, there will be a robust fastening between the base and the pillar.

From pipes

If money is tight, you may want to think about using plastic, metal, or asbestos-cement pipes for the base. An order of magnitude less money will be spent on a tubular structure than a monolithic foundation. A pipe base can be installed quickly and easily, which is a practical benefit in addition to the financial ones.

Crucial! Special anti-corrosion preparations don’t need to be applied to pipes because they are already shielded from these issues. If the soil is shifting, this kind will be the best option.

See our article here for more information on installing a pipe-based columnar foundation.

From logs

It is crucial to consider the wood’s condition when constructing a foundation of this kind.

An antiseptic is applied to logs to stop them from rotting and growing fungus. The logs also need to go through a firing process.

It shouldn’t be damp on the wood. Typical wooden beams are utilized in the construction of columnar foundation structures.

It hasn’t shown to be the greatest support.

The structure may be damaged by excessive moisture brought on by flash floods and heavy rains.

Furthermore, the load placed on the log foundation is not well borne by it.

Citation! It would be better for the site’s owner to think about using a different kind of building material to build a terrace if the location is in a flood zone.

Preparation for construction

The landowner must first consider the dimensions and design of the future terrace:

• You can independently transfer all the numbers to paper – draw a diagram of the future construction. In the future, this drawing can be loaded into a computer drawing program.
• A ready-made, and most importantly, correct drawing according to all calculations can be ordered from specialists. True, this will require additional costs.
• Ready-made drawings of verandas can also be found on the Internet.

Calculations and drawing

The classification of the structure on supports is based on the pillar depth and is contingent upon several factors, including the nature of the upcoming construction and the properties of the soil. The construction requirements listed in SNiP 2.02.01-83 vary based on the type of soil.

Shallow foundations and non-recessed ones are more frequently utilized for lightweight free-standing verandas. The foundation for any additions to the house should be stronger, particularly if the structure is situated on heaving soils.

Take note! Doing a test drilling 0.5–0.6 m below the anticipated depth of the supports is essential. The columnar foundation should be abandoned if the supporting soil contains quicksand because the supports could collapse under load.

The number of supports, the spacing between them, the total amount of materials, and the weight—including the snow load on the roof—are calculated based on the building’s dimensions and weight. If the veranda is to be constructed turnkey, experts will estimate the cost at no charge.

On building sites, you can use online calculators if you decide to build it yourself. The initial information about the intended structure and soil type must be entered.

Tools for work

You’ll need the following to lay this foundation:

• laser level or water level;
• shovels;
• rubber hammer;
• tamping;
• trolley on wheels;
• measuring tape;
• construction mixer and/or concrete mixer for self-mixing;
• screwdriver.

Additionally, you must buy:

1. reinforcement, ready-made concrete (or its components for self-mixing);
2. sand;
3. crushed stone;
4. wire;
5. waterproofing material;
6. plywood or boards;
7. screws and other fastening materials.

Installation of a shallow structure

The installed depth of the designated type of foundation is between 0.4 and 0.7 meters below the soil’s surface. When building a veranda, it is frequently utilized. Plastic, metal, and brown concrete pipes make up the formwork.

A pipe diameter of up to 0.2 meters is appropriate for a brick veranda; a diameter of up to 0.1 meters is adequate for milder variations.

The following steps are involved in building a shallow foundation:

1. At the preparatory stage, we clear the area of ​​rubbish and carry out markings. Places for installing poles are marked with stakes and rope.
2. Holes are dug in designated locations to a certain depth. It is important to add 0.15 meters for the arrangement of the sand cushion (the sand is watered and compacted). The bottom is covered with roofing material.
3. Then, using a building level, the pipes are leveled. If the water is shallow in the soil, they are treated with a waterproofing base.
4. Next, the pipes are filled with a concrete-gravel mixture to a depth of 0.3 meters. After which the support will rise by 0.15 meters, which will further protect the pillars from deformation during ground movement.
5. After the concrete has set, the pipes are lined with roofing felt and the holes are compacted with sand. At the end of the process, reinforcement is carried out and concrete is poured to the surface of the supports.

Note: The veranda construction is still ongoing after several weeks.

Installation of a non-buried base

Positioned at the base of the pyramid. The distance between pillar installations varies between 1.5 and 2.5 meters. The sole can be built on non-heaving soils as long as it is simple to assemble.

Typically, when building, they utilize blocks that measure 0.2 by 0.2 by 0.4 meters. It is simple to find the cost of such a base. The cost of one block is multiplied by the total quantity of material needed. In building, concrete and rubble stone are also utilized.

Brick can also be used for the sole, but it’s important to remember that silicate and ceramic bricks can become distorted in cold weather.

There are various stages involved in building this kind of foundation construction:

1. First, we clear the construction site and make markings.
2. Then, by calculating the load on each support, we determine the number of pillars and the territory on which they will be located.
3. We carry out excavation work – remove 15 mm of the top part of the soil.
4. We create a sand cushion under each support and install pillars. We apply plaster to their upper part.
5. Finally, we protect the pillars from moisture with bitumen resin or roofing material.

For stability and longevity, building a columnar foundation for your veranda is an easy and affordable solution. For this do-it-yourself project, pillars made of concrete or brick are set up to support the structure, giving it a sturdy foundation and enabling adequate ventilation and moisture control. Just a few easy steps will help you build a strong foundation that will increase the value and usability of your home.

Construction of a foundation for a terrace and porch

Construction experts recommend beginning the foundation’s construction in the summer or early fall because, as winter closes in, a lot of moisture builds up in the ground, which can cause the structure to shrink.

Will increase the large disparity in building mass, or the compaction effect, when the veranda is next to another architectural structure.

As a result, professionals advise delaying construction of a house and a terrace.

The most dependable method for soldering them is to use reinforced or concrete.

The veranda’s exterior is fortified with a rolled metal framework that meshes with the earlier iron rods.

It’s crucial to leave 4 cm of space between the house and the terrace during construction. T.O. The structures have different weights and shrinkages, and the space left prevents the terrace from warping.

Citation! Both the base of the extension and the main structure must have supports that are the same depth. With the exception of the side that is next to the house, the width of the foundation extends beyond the walls by at least 10 cm.

They start by marking the extension. The area must be made level, free of vegetation, and have the veranda’s outer corners marked with pegs.

Separate base

When building with bricks, blocks, or logs, the porch’s foundation is created separately and isn’t attached to the veranda’s base. The structure then symbolizes a private base that isn’t attached to the main building.

Monolithic design

Reinforcement bars provide a strong connection between the two foundations. It is crucial to determine the sole’s depth precisely in this instance. This will lessen the chance that the new structure will shrink.

How to lay the groundwork for an addition:

• We place pegs around the perimeter of the veranda and connect them with rope. The marking is ready.
• We prepare pits according to specified sizes.
• At the bottom we prepare a sand and gravel cushion.
• Preparing formwork from boards.
• We install reinforcing bars, connecting them together with wire.
• Fill with cement mortar and after drying and waterproofing, build a porch.

The benefits and drawbacks of a monolithic columnar structure are covered in this article.

Possible mistakes

Inexperienced builders frequently make mistakes when building the veranda’s foundation.

The uneven subsidence of the columnar base is a clear defect. This can happen if the calculations for the foundation depth are done incorrectly.

Even in cases where the load on the platform supports is uneven, the base dips.

It is not advised by experts to create a foundation that is distinct from the common object’s foundation. The depth of the base supports must be the same.

While working, novices in construction might not consider the local characteristics, but groundwater elevation and freezing depth are crucial considerations. Prior to shrinkage, the monolith needs to be insulated and waterproofed. Each column’s height needs to be precisely measured.

Ignoring the grillage would be a miscalculation as it is what keeps the extension stable. Particularly in the case of log options, the supporting beams may break if you quickly construct a wooden frame from a bar.

Take note! Heavy buildings are not meant to be supported by a columnar foundation. The foundation will need to be repaired or even replaced if this rule is broken.

How to fix damage if it occurs?

The columnar foundation of the veranda can skew so much after a season of heavy rains that the front door might not close. In this instance, a structure made of shoes can be used to fix the foundation.

Although it is not always utilized, reinforcing is done when building wooden structures. The grillage is usually restored by pouring concrete up to the building’s level or by installing a new pile.

Formwork or the ground are used for casting shoes. A new base needs to be installed beneath the veranda, alternating between the inside and outside of the veranda for shoes.

Using a variety of readily available materials, the formwork is filled with concrete. It is therefore irreversible and serves to reinforce the leg. Remove the turf, dig the hole to the desired depth, and cover it with parchment paper in order to fill the shoe in the ground. After that, arrange the reinforcement and pour concrete solution into the form.

You must take apart a portion of the floor while holding the extension’s walls in place with a jack in order to build a new foundation.

Concrete lintels are attached to the pillars following the attachment of the supports. The veranda walls are lowered as soon as the concrete starts to solidify.

In order to keep it from touching the building, it is necessary to remove the upper portion of old foundations or remove them altogether.

Crucial! If the pillars’ shallow deepening during construction is the cause of the terrace’s raised base, it can be stopped by deeply establishing the pillars even more. They will excavate the ground on one side, and the pillars will fall below the freezing point.

More iron is welded to reinforcing bars, which are the result of breaking down the pillars. On the surface, formwork is built, and concrete is poured. The updated foundation can be buried in the ground and the structure removed after a few weeks.

Useful video

Watch this video to learn how to build a veranda foundation out of PVC pipes:

Step	Description
1. Plan the Foundation	Determine the size and placement of the column footings based on the veranda size and load.
2. Mark the Site	Use stakes and string to outline the foundation layout on the ground.
3. Dig the Holes	Excavate holes for the columns according to the depth and diameter needed.
4. Prepare the Footings	Place gravel or concrete at the bottom of each hole for stability.
5. Install the Forms	Set up forms to shape the concrete columns as they cure.
6. Pour Concrete	Mix and pour concrete into the forms, ensuring it fills all gaps.
7. Allow to Cure	Let the concrete set and cure for the recommended time before removing the forms.
8. Check for Level	Ensure the columns are level and aligned with the veranda structure.

Constructing a columnar foundation for your veranda is a useful and satisfying undertaking. These steps will help you build a sturdy and secure foundation for your outdoor area.

This kind of foundation is an excellent choice for do-it-yourselfers because it is reasonably simple and reasonably priced. You can guarantee the durability and stability of your veranda with proper planning and the appropriate materials.

Recall that accuracy and focus on detail are essential for success. When measuring and leveling, take your time, and don’t be afraid to ask for help if you need it. If you have a strong foundation, your veranda will look great and serve a useful purpose for your house.

Video on the topic

The simplest FOUNDATION | DIY veranda

QUICK COLUMNAR FOUNDATION FOR 1500 RUBLES! Foundation from blocks for a terrace in one day!

COLUMNAR FOUNDATION UNDER THE VERANDA