I've just been asked to quote on job that nobody else in town wants. Its one of the jobs we have a rep for ...high pucker factor, crap access (probably needs a helicopter) and plenty of logistic problems. I really screwed up and didn't take my camera but basically its a 3 terraced/tiered walls with a swimming pool at the top. Total height is 18 feet. The lowest wall is 4 foot off the road and it belongs to the city. It is full of cracks and needs replacing but thats not in my scope of works. The first terrace sits back 7 feet (room for a mini-ex) and the second wall is cracked and falling away. Its about 8 foot high at the highest. Above that is a pitched motared stone retainer leading up to some piers and fencing around the pool. Don't ask me what is holding the piers up there but 2 have already fallen down. A look at the pavers around the pool shows they have slipped already with 1" gaps between them. The whole lot is perched on the side of a sandhill and as per usual compaction (lack thereof) is the problem...as well as crap stone work in the first place. Its all out of hand and quarry cut natural limestone, some sandstone and it has had various add on's and bodgey repairs over the years. The wall continues on around and up the hill forming the boundary of the neighbours property so I have to renew in the same material and style. SRW is not an option. There is no option but to tear it down and start over. I intend (subject to engineering approval) not to renew the pitched wall (top) part but to rebuild the second wall up to full height, thus adding about 30 y2 of useable area to the clients property. The only problem is backfilling the wall. There is NO opportunity to fill from the top. I calculate I will need about 35 cubic yards. I can't use a big ex because I have nowhere to stockpile and dig from and it would need to be 35 tonne machine to reach. Plus there is knacker all room at the road verge and we are talking a well heeled suburb. The roads are made of pavers and the country club is down the road (Squizzy rolls up in old rusty ford amongst the BMW's and Mercedes). The best method I can think of is to park our 9 tonne dump truck (full of sand) against the lowest wall and run a dirt/gravel conveyor up over the the back of the second wall from the back of the truck. Can anybody else think of a method of slinging 35 yards of fill over the back of an 18 foot high wall??. Yes I will post some pic's if my quote does good.