Foundation bolts - use, types, features of acquisition

Fundamental bolts play an important role in construction and perform the function of increasing the stability of an erecting object. Designed for reliable fixation and fastening of the load -bearing walls to the base of the building, various units and structures (for example, machines, frames, power lines, billboards, etc.).

Bolts are an anchor (anchor) fastener made of a metal rod. They consist of the central rod in the configuration with fasteners and devices. The central bar is divided into two parts. The first part is intended for immersion and fixation inside the foundation. It can have various types and configurations, also, usually there is a device on it that fixes the bolt in the foundation. The second - with a thread, is above the foundation. The supporting walls or structures are attached to it using a threaded connection.

Types of foundation bolts

Fundamental bolts are made in accordance with GOST 24379.1-80 and other regulatory documents. They are produced with a diameter of 12 mm to 145 mm, with a length of 150 mm to 5 m. In their design, there are straight, composite, curved, removable, with an anchor plate and a conical end.

Depending on the type, the foundation bolts consist of the following elements:

central bar; nuts; washer; hairpin; coupling; Anchor plate; conical bushings; Drushing zanga.

Installation of foundation bolts

Bolts are mounted either at the filling stage or in a finished foundation. In the first case, the anchor bolts are fixed and attached to the formwork or among themselves, and then poured with concrete. They should be located in the middle of the foundation in an upright position. During the construction of buildings, the bolts are under the supporting walls.

In the case when the bolts are mounted in a frozen foundation, holes or wells are drilled at the base. The depth should be such that the bolts do not go beyond the foundation in the ground. The holes are poured with cement mortar or special adhesive composition.

At the stage of filling the foundation, all types of foundation bolts can be used, except for the conical spitting elements equipped with conical. Direct -type bolts, with a bend in the second design and with a conical end can be installed in ready -made foundations. The type of bolt, as well as the diameter, length, brand of steel, immersion depth - are determined by specialists on the basis of regulatory documentation at the design stage.

Choice and acquisition

Bolts are selected on the basis of factors such as strength, resistance to dynamic loads, temperature conditions, the need for welding and others. To protect the bolts from corrosion, the method of galvanizing is used.

Fundamental bolts are an important and responsible element of construction. It depends on the correct choice of type, size and material of manufacture how well they will fulfill their function. Therefore, it is important to buy foundation bolts directly from manufacturers or from reliable suppliers, such as the SCMK Metal Structure . Qualified specialists of the enterprise are always ready to advise, as well as choose the optimal foundation bolts for you in terms of reliability and price.