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Posts Tagged ‘Knowledge’

How to Identify Pavement Distress

Thursday, June 2nd, 2011

Unfortunately, even the best pavement is not indestructible. Heavy traffic usage and weather changes, along with several other outside factors, can lead to pavement distress, which is noticeable physical damage on roads or sidewalks. If not dealt with quickly, pavement distress can lead to more serious problems, all of which can significantly shorten the lifespan of your pavement.

But how can you spot pavement distress in time? This article from eHow.com explains how you can quickly identify pavement distress.

1.   Assess cracks on the surface of the pavement. Alligator cracking appears as a network of cracks, forming a pattern somewhat like the skin of an alligator or wonky squares. As the U.S. Department of Transportation outlines in its “Pavement Distress Identification Manual for the NPS Road Inventory Program, 2006 -2009,” the severity of the distress can be measured. It is considered low when the width of the crack is less than 1/4 inch in width. However, the alligator distress is serious when the cracks are more than 3/4 inch wide.

2.   Check the pavement’s surface for long strips of cracking. These are ruts that run either along the length of the pavement or sideways across the surface. In places where the cracks are more than 3/4 inch in width, the distress is considered serious and can buckle the pavement, causing bumps. Hot weather can cause this type of pavement distress.

3.   Identify gouged-out areas or dips on the surface of the road. Pavement distress is characterised by potholes. These are concave holes on the surface, which are a nuisance for drivers. The holes can cause punctures in tires, gather water and lead to further cracking.

4.   Look for dark square or rectangular patches of asphalt on the pavement. Distress can be identified by finding discolored areas where potholes or previous distress marks have been filled or covered over. The replacement asphalt causes a dark patch to be seen. Cracking, ruts or potholes can often be seen in proximity to the patching, which is indicative of pavement distress.

5.   Crouch down and look across the surface of the pavement. Identify two lines of depressions in the road’s surface. If these are in the direction of the wheel paths, this distress is called rutting. Rutting occurs when continuous use of the pavement by heavy vehicles causes the surface to sink. It is classified as severe when the depressions are greater than 1 inch below the surface of the pavement.

Once you have identified pavement distress, it is time to repair the damage. There are several products available that allow you to do the job yourself, but if you want to ensure your pavement is properly fixed, it is probably best to call a professional.

If you have any questions or if you would rather leave the repair work to the professionals, contact PTG Enterprises by calling 410-636-8777 or click here

Repairing Lifted Concrete

Wednesday, May 25th, 2011

After Concrete is laid, the inevitable settling, shifting and moving will occur. But in extreme cases, when the ground settles below the concrete or when a tree root comes into contact with the pavement, walkways or patios can break and lift. These unsightly blemishes on your otherwise pristine concrete surface can ruin the entire look and feel of your patio or walkway. And with Memorial Day right around the corner, you are going to want your home to look perfect for your guests.

This article from eHow.com provides 4 ways in which you can quickly repair that broken and lifted concrete.

Instructions

1.     The easiest way to repair lifting concrete pavement is to grind it down. Most driveways are at least 6″ thick by code, so there should be sufficient grinding depth. Walkways and patios are 3″ – 4″ in thickness. Renting a scarifier is probably the most practical way to do this yourself. This is not an easy machine to use, so if you are not comfortable with the job, don’t hesitate to call in a professional.

2.     If the lifting is the result of tree root growth, you will have to grind your cement down repetitively as the roots will continue to push the concrete up. A better solution is to remove the concrete pavement all together, cut out the offending root(s) and re-pour the cement.

3.     A quick fix would be to fill in the ‘step’ created by the raised concrete with a cement adhesive and concrete/polymer fill. Even if you carefully rough up the lower cement, this ramp-like fix will only be a temporary patch at best. It will chip away fairly quickly, especially on a driveway pavement with heavy traffic.

4.     Better left to the professionals, you can float a slab of concrete that has sunk into the ground by drilling holes and pumping in a cement mix. This will literally float the slab back up with the pressure of the concrete beneath.

Now you can enjoy your Memorial Day barbeque without having to hear, “What happened to your patio!?” at least 50 times. If you have any questions or if you would rather leave the repair work to the professionals, contact PTG Enterprises by calling 410-636-8777 or click here today!

Bidding a Pavement Project And Hiring The Right Contractor

Friday, April 15th, 2011

As they say, knowledge is power. The key to making a wise business decision is being educated on the subject. So if you are ready to have any pavement work done around your business, large or small, this is what you need to know before you even think about call a contractor.

Bidding a Pavement Project

1. Request For Proposal (RFP)
This is a method that is widely accepted within the industry when a client has a specific problem and needs that problem corrected. The client has an RFP prepared that clearly specifies the scope of work. This is usually done by an independent source, like a pavement consultant, reserve study engineer or by a contractor you trust. Once this scope is created, it is typically sent to three to five contractors and a pre-bid meeting is scheduled. A pre-bid meeting is another widely accepted practice within the industry. It involves the client, board members, building owners, anchor tenants, and the three to five contractors you picked. This meeting is designed to provide all key parties the opportunity to have a question and answer session. Usually, the RFP is tweaked at these meetings and little changes are made to accommodate either the contractor or the client. A successful pre-bid meeting will have the contractor leaving with a clear understanding of how he/she is to perform the scope of work. And, the client will leave knowing they are going to receive apples-to-apples bidding. It is vitally important that every contractor bid the RFP the same way. The client should avoid at all costs the instinct to send three to five contractors to a site with directions to “evaluate the property and bid the way you think it should be corrected”. This usually produces three to five different scopes of work with wide ranging price swings.

2. Reverse Bidding
This type of bidding has become more popular as budgets have become smaller. When a client needs more work, asphalt patching, sidewalk repairs, etc. then they have budgeted for, the client reveals their budget number to several contractors. For example, “I have $15,000 in the budget for asphalt repairs.” Those contractors then produce competitive bids on the volume of work they are willing to complete for $15,000. For example, contractor A will complete 275 square yards of repair, contractor B will complete 325 square yards of repair, and contractor C will complete 300 square yards of repair. In this scenario, the client would pick contractor B because they are giving you the best value. Once a contract is awarded, the client and contractor would visit the site and determine the worst 325 square yards of repair. If this practice is repeated year after year, a client can usually get a handle on an out of control pavement situation within a few years.

Hiring the Right Contractor

Once you have received an ample number of bids it is time to hire a contractor. You should ask for the following from your pavement contractor:

1. Contractors License: Every state has its own departments of licensing and regulation. This is the agency that issues business and contractors licenses. Make sure any contractor you use is properly licensed. ( My Contractors License Number is MHIC # 51204 )

2. References: Most reputable contractors are eager to furnish references. Check to see if the jobs were performed to satisfaction in a timely, professional manner.

3. A warranty: Too often, business owners or property managers find out after a disappointing experience that there is no warranty on the work. If a warranty is offered, get it in writing. Most contractors place their warranty information on their proposals.

4. A certificate of insurance: These are simple form letters sent out by request from the insurance company that insures the contractor. General liability and workers compensation insurance is easily attainable for legitimate companies.

5. Do not pay full cost in advance: Most state laws prohibit contractors from receiving more than 1/3 of the contract price at the acceptance of the contract. Find out the terms of payment and avoid contractors that only accept cash.

6. Get it in writing: Always get a written contract before you permit work to proceed. This should detail when work is to begin, the exact details of the improvements to be made, the quality of material to be used, an estimated completion date and payment terms. Read the entire contract before signing, including any small print.

If you have any questions, contact PTG Enterprises by calling 443-463-1536 or click here today!