Sub base advice

[MattD1]

 

Morning all. 

I’m just after a bit of reassurance really. 

I’ve dug out and put down a type 1 sub base for a new drive. 

250mm dug out and a membrane put down before refilling and compacting the type 1 in layers. 

We have had some heavy rain the last couple of days even though it feels solid under foot, the top has gone a bit mushy. 

I’ve put a tarpaulin over it for now to stop us getting mud everywhere but wanted to check this wasn’t an issue. 

It’s probably going to be left for a couple of months before been finished that’s all. 

I’ve attached a couple of pics of the sub base before the rain came. 

Cheers

 

 

[Nickfromwales]

What type of driveway are you installing, as you will need to speak to the contractor regarding prep etc. 

 

Water will sit on compacted type 1 so maybe throw some patio slabs down between the pavement and front door to keep your shoes clean until it’s time to complete the works.

 

The ‘mud’ is just the fines of the type 1. 

[Redbeard]

A bit late for this info, but:

 

"Is planning permission required for new or replacement driveways? 

Planning permission is not required for a new or replacement driveway of any size if it uses permeable (or porous) surfacing such as gravel, permeable concrete block paving or porous asphalt, or if the rainwater is directed to a lawn or border to drain naturally. 

The government's Guidance on the permeable surfacing of front gardens (PDF) explains the different type of permeable surfaces available and contains guidance on the design and construction of permeable driveways. 

If the surface to be covered is more than five square metres, planning permission will be required for laying traditional, impermeable driveways that do not provide for the water to run to a permeable area. This is in order to reduce the impact of this type of development on flooding and on pollution of watercourses.

Please note that these permitted development rights do not apply to flats, maisonettes or houses that have been created through change of use permitted development rights."

 

https://www.bradford.gov.uk/planning-and-building-control/planning-application-and-building-regulations-advice/paving-front-gardens/#:~:text=Is planning permission required for,of use permitted development rights.

 

[MattD1]

18 minutes ago, Nickfromwales said:

What type of driveway are you installing, as you will need to speak to the contractor regarding prep etc. 

 

Water will sit on compacted type 1 so maybe throw some patio slabs down between the pavement and front door to keep your shoes clean until it’s time to complete the works.

 

The ‘mud’ is just the fines of the type 1. 

Cheers Nick. I thought that might be the case as everything seemed fine when it was dry 😂

 

I’ve installed an aco drain but obviously as the drive isn’t at the finished level yet the water is just sitting there. 
 

We are just having a tarmac drain with a border. I’ve levelled it all off to around 80-90mm depth and a slope down the drive to the aco which runs across the front of the garage 👍

[Nickfromwales]

Cool. Just make sure they are told you won’t accept pooling water on the mac when it’s laid, and that you expect them to show you water running off the driveway and into the ACO’s correctly. 
 

Tell them this before they arrive to site with the materials, as that’ll show you if they’re men or boys. Be firm but polite, but explain that is part of the agreement and terms for final payment to be made.

 

Better they run away now vs you fighting in court later if it’s a poor job. 

[Nickfromwales]

Confirm the thickness of the Mac etc with them, and do that via WhatsApp or email, not in person or over the phone. 

[MattD1]

1 minute ago, Nickfromwales said:

Cool. Just make sure they are told you won’t accept pooling water on the mac when it’s laid, and that you expect them to show you water running off the driveway and into the ACO’s correctly. 
 

Tell them this before they arrive to site with the materials, as that’ll show you if they’re men or boys. Be firm but polite, but explain that is part of the agreement and terms for final payment to be made.

 

Better they run away now vs you fighting in court later if it’s a poor job. 

Thanks Nick I’ll definitely make sure. That’s the one thing I’m worried about now is getting somebody in to do the job properly. 
 

Will the sub base getting wet and dry constantly have any negative affect ? We get quite a lot of rain up here that’s all and with the finished layer not getting done for a couple of months I want to make sure I don’t have any issues when it comes to the tarmac stage. 
 

Thanks again 

[saveasteading]

52 minutes ago, MattD1 said:

I’ll definitely make sure

What thickness is agreed. I ask because I once had a drive dressed. He quoted an inch but it was half of that....his excuse being it was an inch before rolling. He had to go to buy some more, and formally cursed me after I paid ( in full).

 

 

And what specification?

 

Is your sub- base laid to the necessary fall, so that thd tarmac is all the same thickness?

[MattD1]

11 minutes ago, saveasteading said:

What thickness is agreed. I ask because I once had a drive dressed. He quoted an inch but it was half of that....his excuse being it was an inch before rolling. He had to go to buy some more, and formally cursed me after I paid ( in full).

 

 

And what specification?

 

Is your sub- base laid to the necessary fall, so that thd tarmac is all the same thickness?

Hiya bud. 
 

I was told 80mm which accounts for a binder and top course.
 

I’ve got 90mm in most places but at least 80mm everywhere. 
 

Constant fall to the aco at the garage 👍