Category: Structure & materials
Prepared by Eng. Ahmed Fathy, Projects Manager ·
Definition
A ground beam is a concrete beam at foundation level that ties the footings together, carries the ground-floor walls and reduces differential settlement.
Why it matters on a project
Ground beams protect the building from cracks caused by uneven settlement, so their reinforcement and waterproofing are checked carefully.
Measurement and pricing
Concrete in cubic metres, rebar in tonnes, and side waterproofing in square metres.
Worked example
Ground beams 30 × 60 cm with a total length of 40 m: volume = 0.30 × 0.60 × 40 = 7.20 m³.
Common mistake
Skipping waterproofing on the sides of ground beams, so damp and salts rise into the walls above.
Frequently asked questions
Are ground beams needed in every villa?
The structural designer decides; they are very common in villas to tie footings and carry ground-floor walls.
How are ground beams waterproofed?
Usually with bitumen coatings or membranes on the sides, protected before backfilling.
Related terms
- Footings (foundations)Structural elements that transfer the building loads to the soil.
- WaterproofingLayers preventing water ingress into structural elements or spaces, such as bituminous membranes and cementitious coatings.
- Reinforced concreteConcrete containing steel reinforcement to resist the tensile forces concrete alone cannot carry.
- Solid slabA concrete slab of uniform thickness without voids, common for small and medium spans.
Read next
- Work out quantities with our free calculators: concrete, tiles, paint and plaster. Open the calculators
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