Is this how you do Kerbline stakeout ?

Hi Lee,

we see both types of kerbs here, the prefab pieces and more and more the in situ extruders, sometimes mixed with the prefab for the small radii.

Do you use the Access road module on your TSC2 for staking? Do you stake from dxf?

nice pictures,
thanks for sharing,

Chr.

I've never seen prefab pieces around here. It's always cast-in-place, with concrete poured into forms, or one of the extruders.

Is it just me or is that road fairly narrow? What is the width?

Thanks for sharing the pictures. JRL

Same here...never seen precast curbs (or kerbs for that matter) in the Midwest.

Our curb is cast in place here as well, either skilled labor putting together forms or a curb machine that takes the concrete from a truck and forces the curb through a template in the shape of the curb.

It is a 5m wide road from Kerbface to kerb face, the lowest you can go here on a public road is 4.5m, plenty of those in the low cost housing sites, not easy for two cars to pass, this road is funded by the developer, so they are going as narrow as possible.

Lee

I actually use a combination of both, the dxf for extra detail that is to hard to model in the roads module and as a check for what the roads module is telling me.

It is very easy to make a simple offset mistake or use the wrong parameters such as use previous or next element for slope calculation when doing construction offsets, so the DXF is always in the background as a visual check to make sure I don't stake garbage.

I have caught one or two big mistakes like this, such as road widths not changing when supposed to or not projecting the road cross falls correctly, due to simple settings in the software that get overlooked.

Great software though, would never like to go back to staking roads by old methods, far to slow, here as we stake the kerb line we place the finished level at the same time, so no going back and using an automatic level any more.

IT would be perfect if the GPS could just get decent levels so we could use that instead of the robot, as the robot does not like the vibrating rollers on the site and line of site is always an issue on roads jobs.

Lee

One good thing about pre cast....

Is that if you cock up the levels or line, it is not such a train smash to lift the kerbs and relay, all you really lose is the labour, the materials can all be re used, I am sure that is not the case with extruders, must be little room for error.

Lee

There are still some granite curbs in the older sections of city of Saint Paul. I think the sections are about 6 feet long. I'm not sure how old they are or how the stone was cut.

Seems odd not to have curb & gutter on both sides. That makes it look like divided median, but not sure.

Howdy Lee, here in North Texas (Dallas/Ft Worth), we pour a lot of concrete roads ranging from 24 foot face of curb to face of curb to 30 foot face to face. My company sets forms, and then uses a vibrating screed to place the concrete. The screed has a curb "mule" that forms the curb as it goes. Of course we only do fire lanes and public access roads on commercial sites.

Here are some photos of SMU Blvd at the GWBPC project.

I have seen the type of curbs you described used to accent pavers (pre-cast bricks) on some of the more high end projects.

Everything I have seen here in California is cast in place concrete.

My Dad told me in England they use all precast curbs and walks. If they need to dig under the walk, they pull up the section, do their work then put the precast section back down. This is what he observed when he visited about 15 years ago.

In most of the areas that I have worked in the US, it is poured in place concrete. When I was in Massachusetts, all the curbs were made of granite chisled from the nearest quarry in (I believe) 4-6 foot sections similar to what you have stated.

In england its all Pre-cast kerbs, profiles and sizes vary but effectively the same procedure.

Kerbs are under a 1m in length for straights and weigh between 50-60kg each, radius's are made of special standard radi for both internal and external curves.

Stake-out will be done by using a Road pin, (steel pin 12-20mm diameter) set at either the face or back of kerb, different setting out engineers and kerb layers have there preferances, mine in now to set out face of kerb.

Then the level mark is again either top of kerb or finished road level, depending on preference.

Not done any large road layout jobs as in motorways etc, usually just parking and developments roads.

I set out using a total station with chain man if i'm lucky (labourer) of varying competence and then go back over doing levels with a rotating laser, marking the levels using a piece of insulation tape.

Setting out is usually done the day before needed although usually got the lads chomping for it as they haven't done the required prep work ontime before hand

Unprepared contractors asking for stakes seems to be universal 😉

Over in the UK, stake out surveyors are called site engineers or setting out engineers, they will typically work for the contractor undertaking the work or alternatively work for the principal contractor/main contractor, but then the majority of the workload is that of checking.

I've worked for both and am currently freelance which means i will work for anyone on an hourly rate system, undertaking duties as they require, I own my own equipment which does help a little with getting work but its still too quiet for me and not too many positions out there to work direct for the contractor as an employee

Hey I did a little construction surveying in the DFW area back in 09, I worked for Austin Bridge and Road. A LOT of concrete pavement in Dallas, you rarely see it here in Florida.