When can you strip formwork?

When can you strip formwork?

Formwork may be carefully removed after 24 hours. You can walk on the surface after 3 days but avoid any heavy loads for at least 7 days. If using Extra Strength Concrete Mix, formwork can be removed in half the time.

How long does a concrete slab take to dry?

28 days

Does a 4 inch slab need rebar?

No, depending on your proposed loads. But a 4″ thick slab really shouldn't have rebar in it, too thin. Most thing slabs, like driveways or sidewalks have a wire mesh reinforcement in them not rebar. ... If your slab is going to be subjected to enough load to need rebar it will also need to be thicker; 6″ or 8″.

Is 2500 psi concrete good for driveway?

2,500 PSI. Often more affordable than higher strength concrete, 2,500 PSI can be useful for driveways and walkways. However, some may choose a stronger concrete, like 3,000 PSI, to avoid excessive cracking. A good use for this concrete is a walkway on the side of a home that doesn't receive excessive traffic.

What is the best base for a driveway?

The 9 Best Types of Gravel for Your Driveway

• Item #4. 3/10. ...
• Crushed Stone #57. 4/10. ...
• Crushed Stone #411. 5/10. ...
• Quarry Process. 6/10. ...
• Pea Gravel. 7/10. ...
• Jersey Shore Gravel. 8/10. ...
• Marble Chips. 9/10. ...
• River Rock. 10/10.

What size rock is best for a driveway?

A commonly used gravel size for driveway base layers is #3 gravel. This rock is generally 1-2 inches in diameter and does double duty by establishing a solid, reliable foundation and providing adequate drainage; both critical factors in driveway construction.

What size gravel do you use for a driveway?

Gravel Sizes In general, driveway gravel should be relatively large, between about 3/8 and 3/4 inch in diameter, as compared to the gravel used for footpaths, which is typically 1/4 to 3/8 inch in diameter. Another factor to consider is the amount of very small granular material, called "fines," in the gravel.

How deep should a sub-base be for a driveway?

100mm