# block_interval · Rell standard library · Chromia Docs (concept)

> val block_ interval: integer The time interval that will be used to determine the time of the next block to be built. The next block to be built will have 

Source: https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/rell.test/block_interval/

PROPERTY

# block\_interval

```signature
val block_interval: integer
```

The time interval that will be used to determine the time of the next block to be built.

The next block to be built will have a timestamp equal to
`rell.test.last_block_time + rell.test.block_interval` unless it is explicitly set with
`rell.test.set_next_block_time()` or `rell.test.set_next_block_time_delta()`.

Defaults to `10000` (`10` seconds).

Can be modified with `rell.test.set_block_interval()`.

**See Also**

1. [`rell.test.set_block_interval()` - Rell Standard Library](https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/rell.test/set_block_interval/)
2. [`rell.test.set_next_block_time()` - Rell Standard Library](https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/rell.test/set_next_block_time/)
3. [`rell.test.set_next_block_time_delta()` - Rell Standard Library](https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/rell.test/set_next_block_time_delta/)
4. [`rell.test.block` - Rell Standard Library](https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/rell.test/block/)

Since 0.13.3

[View this page on docs.chromia.com](https://docs.chromia.com/pages/rell-stdlib/-rell%20-system%20-library/rell.test/block_interval.html)Generated API reference, mirrored from the live docs