25
because large slabs of concrete have expansion joints between them.
Two-way slabs are rectangular reinforced-concrete slabs that are supported on all sides. The reinforcement is placed perpendicular to the sides.
18
The required steel in columns, beams, and slabs is determined by structural design calculations that consider factors like load-bearing capacity, span length, and building codes. Typically, columns require higher steel reinforcement due to axial loads, while beams need to resist bending moments. Slabs generally have a lower steel requirement and are reinforced for tensile strength. The specific amount and type of reinforcement, such as rebar sizes and spacing, should be based on detailed engineering analysis and design standards.
You could, but then you might risk causing damage to the new paving slabs, or exacerbating drainage issues. I would go ahead and remove the old slabs as these are usually just laid in with plain sand between them. Even if it's cement, I'd hate to have to do it over.
The answer will depend on the size of the patio slabs.
14
20 I believe
400 at least
To find out how many 600mm by 600mm paving slabs are needed to cover 20 square meters, first convert the dimensions of the slab to meters: 600mm is 0.6 meters. The area of one slab is 0.6m x 0.6m = 0.36 square meters. To cover 20 square meters, you would need 20 / 0.36 ≈ 56 slabs.
To determine how many slabs are needed for one square meter, first convert the dimensions of the slabs from millimeters to meters. A 600mm x 600mm slab is 0.6m x 0.6m, which has an area of 0.36 square meters. Therefore, to cover one square meter, you would need approximately 2.78 slabs. Since you can't have a fraction of a slab, you would need 3 slabs to cover one square meter.
305.56
23.41 sq m
140
20 ft= 6096 mm (6096 * 6096) / (450 * 450) = 183.512178 184 slabs
You will need 63 44cm x 44cm slabs to cover that area.
To determine how many 450mm x 450mm paving slabs are needed for a square meter, first convert the dimensions of the slabs to meters: 0.45m x 0.45m. The area of one slab is 0.45m x 0.45m = 0.2025 square meters. Therefore, to cover one square meter, you would need approximately 1 / 0.2025 ≈ 4.94 slabs. Since you can't have a fraction of a slab, you would need 5 slabs to cover a square meter.