Posted: Wed May 24, 2006 6:15 pm
Hi Folks
Been a while since I was here, the drive took a back seat over the winter! Still I have now finished my edge courses and my sub-base (40MM limestone crusher run) is compacted to levels. (and all the rain we just had shows that my falls are right!
)
So I have a week off to lay the block on my bedding sand. As this is a big area, I'll need to use trammell bars to get the screed depth right. I just re-read the bit on getting the screed level right and will be building a test level first thing on Saturday.....
But what is not clear to me is how the tramell bars are fixed into position on the sub-base. If I use metal poles, how are these held in place? If I use timber, do I just hammer nails through em into the sub base? It is clear that the bars should not move, but how can you achieve that without leaving damage in the sub-base? And these need to be removed easily after screeding? Help!
(If it's of any significance, the area being paved is about 12M x 14M that is trapezoidal in shape and slopes toward the house down the short side. I'll be screeding along the short side down the slope and paving up the slope from the long side)
Been a while since I was here, the drive took a back seat over the winter! Still I have now finished my edge courses and my sub-base (40MM limestone crusher run) is compacted to levels. (and all the rain we just had shows that my falls are right!
)So I have a week off to lay the block on my bedding sand. As this is a big area, I'll need to use trammell bars to get the screed depth right. I just re-read the bit on getting the screed level right and will be building a test level first thing on Saturday.....
But what is not clear to me is how the tramell bars are fixed into position on the sub-base. If I use metal poles, how are these held in place? If I use timber, do I just hammer nails through em into the sub base? It is clear that the bars should not move, but how can you achieve that without leaving damage in the sub-base? And these need to be removed easily after screeding? Help!
(If it's of any significance, the area being paved is about 12M x 14M that is trapezoidal in shape and slopes toward the house down the short side. I'll be screeding along the short side down the slope and paving up the slope from the long side)