Blasting vs jack hammering Cancel The title field is required!

1. Anthony Williams_2

   

   0 posts
   
   10/16/2014 8:10 AM

   I am looking for advice on a current situation we are having at our golf course.
   
   In the near future the city is going to be running a sewer line through four of our golf holes. It will go a cross two main lines and a few irrigation patterns. It will also cut across two fairways and a couple native areas. As they do this project they will run into a substantial amount of rock. They (city engineers) are suggesting that they blast the rock rather than jack hammer it. They are saying that three short blast will be less impactful to our irrigation system than the constant vibrations that a jack hammer will cause.
   
   They are going to do the project during the winter months (Nov.-Mar.) so it has little impact on the golf course rounds.
   
   I am looking for any advice as we move forward with this project. Anyone with experience in dealing with these issues I would greatly appreciate.
   
   Thank you

   
   
   
   
2. Stephen Johnson

   

   0 posts
   
   10/16/2014 4:10 PM

   they be lying to you.
   Jackhammering out the rock is more time consuming, therefore more costly than blasting.
   Are they sure they can control the amount ,size, of detonation most of my course had to be blasted in and we used a rock saw to put in irrigation.

   
   
   
   
3. Andy Jorgensen

   

   1 posts
   
   10/16/2014 4:10 PM

   I was going to say, is a rocksaw not an option? Cherokee Run in Conyers, Georgia was built upon solid granite. They have some nice and clean irrigation trenches cut with a rocksaw.
   
   
   http://www2.vermeer.com/vermeer/NA/en/N/equipment/rockwheels

   
   
   
   
4. Anthony Williams_2

   

   0 posts
   
   10/16/2014 7:10 PM

   They didn't give us many options. The city engineer is meeting with us again in a week at our board meeting. They have not given us many specifications on the project. Back in 2005 they had a contract in negotiations with a property owner. I was not the superintendent in 2005. They are using several of these references, which I am trying to get my hands on. There is a lot of back channel talking between the property owner and the city now. This new sewer line only benefits the property owner as he can now develop his property into a neighborhood with less upfront cost to him. The city is doing the project so the property owner has no financial responsibility anymore. I will bring up the rock saw option to them. I am just looking for an option that is going to cause as little disruption to the course and irrigation system as possible.

   
   
   
   
5. Daniel Jurgens

   

   2 posts
   
   10/17/2014 5:10 AM

   We've had all kinds of blasting going on here for the past 12 years. I haven't had any irrigation issues. If it's some small areas they need to get through I can't see how a short vibration with a controlled blast can do any damage, unless you have irrigation in the very immediate vicinity. And as stated further up, jack hammering will cause more vibration, longer. But every property and circumstance is different. Good Luck! Dan, Kragerø Norway

   
   
   
   
6. Michael Hummel

   

   0 posts
   
   10/17/2014 10:10 AM

   Barry:
   
   If you have the space I would consider a pipeline trencher ( t855 or bigger) vemeer.. depending on how hard the rock is .. Getting the permit to blast will be difficult ... This type of machine allows the rock spoils to be ground to good material to bed the pipe..
   
   You will have to careful spend time marking whatever you do not want to cut since this style of machine with cut through pipe like butter.. Many utility contractors use these machines so you could sub the work out ..