~o~
Sunday 25th 53F/11.7C. Wet and windy. Expected to continue all day. About 9mm of rainfall altogether.
Up at 6.30 after a reasonable night.
Even my little Morris leaves tracks in the supposedly compressed gravel. All the effort and huge expense has only given me a sand covered parking space. I didn't ask for a wider beach. I needed it to be driven on by a variety of vehicles.
The gravel lorry struggled to pull away as it just dug itself deeper. Despite being unloaded. That was after three passes with the plate vibrator. Where do I go from here?
The workers arrived at 8.00. Ironically, my brother rang just at that moment. To suggest damp [rain] was good and a vibrating roller essential. They came instead with a hopping stamper. Jackhammer? With a plate about a 15"x18" and guaranteed solidity. Or so they said.
I told them I wasn't going to waste thousands on a soft surface. I think they got the message. I pointed out that even my little Morris left its tire prints. Even after running over where the massive lorry had left its own deep ruts.
I was adamant that the granite chippings are not to go down until the ground [compacted gravel] was rock solid.
The granite looks quite beautiful now it is wet. Almost bluish to my eyes but clearly grey to the camera. I went with the next to smallest size at 8-11mm. I had considered this carefully and decided it would be the best option for a safe riding surface on my bike. Pea gravel is lethal on a bike. It rolls and moves sideways effortlessly when ridden upon. Which is [perhaps] fine on a trike. Not on two wheels.
To support my brother's expertise I am continuing to study online advice and videos on driveways. In a perfect world I would have laid weed fabric and a cellular matt first. The cost would likely have doubled.
Today's helper is much older. Obviously far more experienced than the lad who came yesterday. Speaks English well enough too. Which makes communication rather easier. I don't have all the correct Danish terms in my limited car park surfacing vocabulary. Which would make me sound like an idiot to some. Though I will not criticize the young man who came yesterday for his youth. He did a solid day's work, had a good work ethic and handled all the machines effortlessly.
8.30 It is only 63F/17C indoors. I had better light the stove. Since I can't be sitting outside all day watching them work. Because of the rain. Fortunately the vibrators are not too unpleasant indoors. Much like a helicopter landing on the roof! They are using the stamper on the newly laid gravel. Out in the middle. Where they ran out of gravel yesterday.
9.45 Already a toasty 68º/20C in the room. Further discussion ensued as the rain has temporarily stopped. There is clearly an effect from using the jackhammer first. Then raking and going over it with further crisscrossing with the plate vibrator. The rain is helping the compaction too.
They are suggesting no more than 50mm or 2" of granite chippings be laid. Otherwise it may rut to car movements. The small size I chose may stick in car tire treads allegedly. It is recommended to compact the chippings by the big bag delivery companies. They also suggest using only 50mm of chippings.
11.20 57F/14C. The contractors have just left with their machines and will be back next weekend. The extra compaction, aided and abetted by the rain, has resulted in a much more solid surface. The 2.5 ton diggers were now leaving little sign of having passed over the surface. Only in the middle, where the new gravel was laid, were there clear tracks. Even here the indentations are radically reduced. By several inches or centimeters. Compared to yesterday when it was dry. When deep furrows were left. This central area had been well compacted this morning but had little chance to absorb any rain.

The plate vibrator was bringing water to the surface elsewhere and sticking fast due to suction. It no longer moved forwards on its own. So it was decided that any more work today would damage what had been achieved. While I am not particularly worried about the further delay there is a lot of stuff left out in the rain. Whether it has any real value is quite another matter. Most of it was from the structure or contents of the observatory.
12.20 59F/15C. Still raining steadily. Now a very cosy 72F/22C in the room. I'll let the stove die down now.
I just looked out and the gravel surface is fairly evenly covered in small puddles. More visible from being dappled by the rain. This is despite the entire area having an obvious and deliberate fall towards the west. Which is the way the ground naturally slopes. The incline has been visually exaggerated by the huge increase in clear area.
The contractor suggested he aimed for a 2-2.5% incline. I'll check this [out of curiosity] for myself when it stops raining.
Curiosity got the better of me and I risked the rain. It is warm and dry indoors. So I set up my laser level on a brick. 6cm thick. The laser's horizontal light source is 10cm above the base. I stacked blocks 18m away until the reflection of the laser's horizontal beam just grazed the top. Checked in daylight by a frameless, handheld mirror. The required stack was 47cm high. Simple subtraction shows the difference in level is 31cm. So the incline is 1.72%. Or about 1 degree. Or a 1 in 58 fall. Close enough and it probably varies slightly over the entire area.
Granite chippings might tend to allow water to flow more readily downhill. Due to its more porous nature than the underlying surface. Assuming there was a hard, uniform and impermeable surface on which it rested. Unlikely given its power to depresses that surface locally. There is bound to be some mixing at the interface. That said, the chippings might allow more rain to collect before it was visible as puddles on its surface.
The chippings are currently coated in a powdery deposit. Presumably from the crusher. They might change in appearance over time as they are cleaned by the rain. I wonder whether this dust might act as finings for increased compaction?
A pair of magpies has arrived to inspect the graveled area. Perhaps they were just curious. A single Magpie has been visiting the lawn over the last week.
17.00 It finally stopped raining. So I dragged two recycling bins uphill across "the beach." Then along the drive to the collection point. The "sand" now seems very firm. Though shallow footprints and wheel tracks still persist.
8.30 Still 70F/21C in the room. Dinner was chicken, mushrooms and chips with Bisto gravy. 😋
~o~