# beams and spans of beams in building construction

Contractors for building houses **รับสร้างบ้านราชบุรี** and buildings will know that beams are structural parts that look solid. Designed to carry the weight and continue to transfer the weight to the point under the beam on both sides. This weight will cause the beam to bend and deflect. Therefore, to balance the beam material must have internal strength to resist such curvature and deflection.

- The deflection is the normal beam perpendicular to the lowest point of deflection. And it will increase as the weight or length of the band increases. but decreases when the cross-section weight of the beam has an inertia moment or an increased modulus of elasticity.
- The cutting moment is the external moment acting on the beam. and causing the beam to bend or turn
- Bending forces are compression and tension units that occur simultaneously at any cross-section at the top and bottom edges respectively over the length of the beam.
- This unit of flexure occurs because the cutting moment and tensile unit are greatest on a given cross section at the furthest point from the axial axis. Also known as the tip of the top or bottom edge.
- An axial force is an imaginary line that passes through the equilibrium point between the flexural force causing compression and the flexural force causing the tension on the beam cross section. This causes the amphibious line to not have a bending force unit to occur.
- Shear forces occur at every cross-sectional area along the length that is subjected to external loads. which can cause the beam to break vertically
- Vertical shear unit in the material of the beam cross-section. formed to resist external shear forces
- Horizontal Shear Unit formed to withstand horizontal breaks

The load-bearing efficiency of the beam is increased when the beam cross-section meets the desired moment of inertia or section modulus by providing a small cross-sectional size. as much as possible Typically, beams with deep bottoms are designed where the flexural strength is high. For example, double the width of the beam cross-section. It will increase the cut resistance in a unit of force twice. while increasing the depth of the cross-section of the beam twice It will increase the bending resistance in a unit of force by four times.

- The inertia moment is The product is multiplied by the ratio between the composite cross-sections. Same with the power of the perpendicular distance from the axis of symmetry that the cross-sectional area is considered to be rotated.
- The segment modulus is Shape properties of the cross section It is obtained as a result of dividing between the inertia moment and the perpendicular to the axis considered to the furthest distance of the cross section.Read more about:Read more about:

## The span of the beam in building construction **บริษัทรับสร้างบ้าน**

- Single-span beam with conventional support. Placed on the support points on both sides of the hinge. Therefore, for a simple single-span beam, which is a determinate structure, the shear reaction value is not possible. and bending moment Will occur more or less does not depend on the shape or type of beam cross-sectional material.
- Cantilever beams or cantilevered ears are Beams with only one support point
- The cantilever beams lie on one side continually. A simple single-span support beam that looks like a cantilevered ear canal extends to one side to reduce positive moment. In the middle of the first row will create a negative moment. cause the beam to bend up at the point of support on the side that will be extended to the Hu Chang beam In general, if the action force spreads at a constant length across the beam and if the distance that extends out to approximately 7 of the length of the first span This will cause the magnitude of the moment at the support point to be the same size as the moment at the midpoint of the first crossing, but in the opposite direction.
- The cantilever beams lie continuously on both sides, namely A simple single-span support beam that looks like a cantilever, extending out on both sides. In general, if the action force spreads at a constant 13 of the length of the first span This will cause the magnitude of the moment to occur at the support to be equal to the moment at the midpoint of the first crossing, but in the opposite direction.Read More About: sdedc
- The first beam is firmly fixed. There are support points on both sides to resist rotation. This type of fixed support accepts the transfer of bending units. This is because fixing the beam at the support point does not move and reduces the maximum deflection value of the beam.
- Independent beams are Normal support single span beam Supported by cantilever beams that lie continuously on both sides. It is a beam that looks like a normal single span beam. There is a hinged support point. Make the two ends of the beam have a moment equal to zero.
- A continuous beam has two or more supporting points. The beams run continuously without breaking the distance. This will cause the value of the maximum bending moment at the center point to be less than that of the same beam with the same load and span length. Both single-span beams are firmly fixed on both sides. and continuous beams as a structure Indeterminate Structure (structures that cannot be analyzed by equilibrium equations alone) in which the reaction force, shear force and bending moment depend not only on the span length and the load but also the load. But it also depends on the shape and type of cross-sectional material of the beam.Visit The Site: timebusiness