What is the minimum end bearing of a Precast beam to a beam and block floor?
100mm bearing
Beam ends laid onto a DPC and spaced out using the block infill, with a minimum of 100mm bearing. Blocks are bedded onto split course blocks and built into the wall.
How far can beam and block span?
Introduction: Beam and block ground floors The concrete beams can span up to 8m without the need for subfloor walls, although a typical span is around 6m or less.
What size are concrete floor beams?
Two beam sizes are available; 120mm wide for standard span and load applications and 170mm wide for heavy duty and longer span requirements, for example in commercial construction. Both beams are the same height and can be used together ensuring the most economical construction options.
What are bison beams?
Bison Precast prestressed concrete beams exhibit an upward curve known as camber, which is a result of the compressive force near the bottom generated by the prestressing tendons. An allowance of span/300 should be taken into account in floor finishes or bearing levels.
What goes on top of block and beam?
Insulation is usually positioned on top of the beam and block floor, a concrete topping or screed is then laid onto the insulation. An upstand perimeter insulation is installed around the edge of the concrete topping or screed in order to prevent thermal bridging.
What goes under a block and beam floor?
The ground beneath the floor should be free of topsoil and vegetation. No over-site concrete or sand blinding is necessary. Typically a minimum void of 150mm (225mm in heavy clay soils) must be maintained between underside of the floor beam and the ground surface.
Can you cut beam and block?
Yes you can go through a beam and block floor by taking out blocks but cutting beams is a whole new can of worms. Be fun digging a pad through a narrow gap but not impossible. Brick pier will have to sit on something.
How much do concrete beams weigh?
The standard concrete floor beams have a section weight of 34 kg/m. Standard floor beams primary use is for residential and housing construction.
What size are bison beams?
There are three beam types which are produced in standard profiles of 150 x 125mm, 150 x 215mm and 225 x 135mm (depth x width) to give a range of capacities to suit all loading options.
Where are precast concrete floor beams made?
We have expertly manufactured precast concrete floor beams at our factory in Essex for over 70 years. Beam and block concrete floors comprises a series of inverted T-beams made of pre-stressed concrete cut to specified lengths as determined by construction drawings.
Why use pre-stressed precast bridge beams?
The use of pre-stressing enables precast concrete bridge beams to span long distances. Shay Murtagh Precast not only manufactures high quality pre-stressed precast concrete bridge beams but is a valuable resource at all facets of ensuring a fast and efficient build.
Why choose Banagher precast concrete?
Why Choose Us? Banagher Precast Concrete has been manufacturing precast concrete products since 1949 and bridge beams since 1965. We developed the industry standard ‘W’ beam in 2005 and the ‘MY’ beam in 2007 – we are the bridge beam experts.
What are the concrete beams?
The concrete beams are effectively an inverted ‘T’ providing a concrete ‘lip’ to support the blocks. The beams are manufactured with C60 concrete and high tensile wires providing an efficient structural member.