6. Common Defects
plaster/concrete Table 6.3 Common Defects During Service Life Preventive Measures • Paint on receiving surface with moisture content not exceeding 6% (or refer to manufacturer's recommendation) Remedial Methods • Remove efflorescence, unstable matters and loose paint film • Repaint on receiving surface with moisture
This is a blank page - Buildings Department |
Symptoms/Phenomenon • Cracks that penetrate through finishes into the concrete or bricks • Long, continuous cracks across width of wall • Diagonal cracks at corners of window or door • Cracks with rust staining. Possible Causes. Structural cracks may be caused by many factors, e.g. excessive movement of the building structure,
Why Some Solutions Fail | Childers Brothers Inc.
Foundation Fail #3: Substandard Installation. Even if a contractor matches the ideal solution to your problem, your repair can still fail due to poor installation. The truth is that most permanent, high-quality repair methods involve skill, experience, and precision. Helical piers are a great example of this.
Understanding Common Building Defects, Solutions ...
Table: 1 Common building defects and their symptoms Common Defects Symptoms/Phenomenon Possible Causes i. Defective concrete, spalling or loose plaster in ceilings • Surface with water/rust staining, water leakage • Patterned cracking • Bulging, falling off of concrete patches with reinforcement exposed, often rusty
SYMPTOMS - Concrete Foundation Repair | Inspections
SYMPTOMS. Following are some symptoms that can help provide the basis for a forensic engineer to opine on the type of foundation movement, but not all symptoms will be present or observable. Heave Symptoms. Following are some symptoms of heave: Slab …
What is concrete cancer? — Perfect Concrete Care
Also overworking the concrete during pouring and screeding. SYMPTOMS. The primary signs of the dreaded CC is physical deterioration of the slab: cracking, spalling, scaling and crumbling concrete. But you can also see secondary signs like leaks, expanding walls and joints, bubbling render, cracking tiles and rust stains. Because concrete is so ...
Shrinkage Of Concrete - Causes & Prevention [Civil Planets]
initial setting period of newly poured concrete in the plastic stage. Plastic shrinkage is directly proportional to the cement content and indirectly proportional to the water-cement ratio. Drying Shrinkage – The drying shrinkage is a continual process and happens in hardened cement concrete surfaces due to the evaporation of water molecules at the final setting time of concrete.
Health Problems Caused by Living on Concrete Floors ...
Concrete floors have long been used in industrial buildings, and recently they have become popular in residential apartments and homes, too. But while concrete floors are in vogue, people who live on them can suffer from a number of health problems resulting from exposure to concrete and the lack of shock absorbency they provide.
American Foundation Financing
Symptoms of Concrete Issues Causes of Concrete Issues. Concrete Leveling Solutions. PolyLevel® Driveway Leveling Sidewalk Leveling Basement Slab Leveling Patio Garage Floor. Sinkhole Repair. Compaction Grouting. Commercial Service. About Us. Service Request Form FAQs Financing Job Opportunities Coupons Customer Reviews Associations Photo Gallery.
Foundation Repair Methods and Cost Estimates
Used for slab foundations, slabjacking is a means to repair the sunken portions of foundation without replacing the entire slab. Several holes measuring between one point five and two inches are drilled into the affected slab. These holes are evenly spaced, usually between three and eight feet apart, depending upon the slab's thickness.
How to stop water leakage from concrete roof? - Causes of ...
Symptoms of water leakage from concrete roof slab Visibility of damp spots, visible cracks, vegetative growth, and reduced water pressure in taps can signify the water leakage in concrete slabs Waterproofing of the concrete structures can be done either on the interior/exterior side or within the concrete …
Visual Inspection of Concrete - InterNACHI®
A cold joint in concrete. finishing the surface too soon. Troweling while the bleed water is still on the surface forces water back into the surface layer of the concrete. This increases the water-to-cement ratio and results in a concrete surface that is overly porous and of substandard durability; and; improper curing methods or lack of curing.
What causes concrete to sink or become uneven? - CLS ...
Well, slab settlement refers to the sinking or movement of a concrete slab when the soil below the slab can no longer support the weight of it. This happens on driveways, patios, sidewalks, pool decks, stairs, garage floors, and foundations around the country.
Common Causes of Slab Leaks - Orange Coast Plumbing
The use of substandard pipe/line materials can also dramatically increase your chances of having to deal with a slab leak. Reputable plumbers will only use quality materials that meet the standards imposed by local building codes.
Investigation of the September 6, 2012 Partial Collapse of ...
The contractor finished placing wet concrete at the second level of the parking garage for an approximate area of 18,000 ft. 2, i.e., ¾ of the entire second level in the east portion of the building. The concrete for the slab was placed by the pumping method. The volume of concrete pumped was approximately 500 yd3 with a total weight of
453 - csun.edu
Substandard Dwelling- doesn't comply with minimum standards. ... irritate the skin and lungs, and cause kidney & liver damage. Symptoms of exposure include eye and skin irritation, dizziness, violent headache with nausea, and heart arrhythmia's. ... It can enter through cracks in a concrete slab. Most (85-90%) radon enters from soil air ...
A Probable Cause of Asthma | Weighed in the Balance
A Probable Cause of Asthma. It has not been proven what causes asthma in our children, and researchers have not proven the reasons why there has been a dramatic increase in asthma cases worldwide. So researchers who can find a correlation with other factors often offer their speculative opinions. In Barbados, incidents of asthma have increased ...
Category: Residential Concrete
The concrete contractor must inspect the house before proceeding with the repair. Specialists will look into what caused the damage and take note of any visible signs. Some factors have a significant impact on the foundation's decline. The following are the most common conditions: The quality of soil near and under the foundation
How to Evaluate Home Foundation Problems
The previous owner left that slab intact and added more concrete slab around it to install the large "Florida room". Their was a huge live oak tree near the room which we had removed due to safety concerns. Problem now is that the additional concrete slab is starting to lean forward while the original six by six slab is still level.
5 Symptoms Of Concrete Slab Failure - & When To Hire A ...
A concrete slab is exactly what it sounds like – a large slab of concrete at the base of the home that makes a solid foundation for a home. A concrete slab can range in size. Some may be 4 to 6 inches in thickness, with the center of the slab often being the thickest part of the concrete.
Most Common Problems Found In Home Inspections
Terra cotta, concrete and slate tiles have life expectancies of about 20 to 100+ years. These materials are very brittle. Expansion and contraction caused by the changing seasons will cause these tiles to crack or become loose. Walking on these tiles can be deadly to the material. Cracking and the signs of aging can be difficult to see from the ...
What IS a Stem Wall, Anyway?
Concrete Slab foundations. Stem walls are a part of the slab foundation system. A buildings stem wall attaches the walls of the home to the foundation. Stem walls are often composed with concrete and rebar. Given enough time and the right conditions, a number of stem walls will fail regardless of how well they were constructed.
Repairing Common Concrete Slab Problems - Concrete Network
Repair methods and solutions Common ways to repair a slab are to surface fill or inject with epoxy or polyurethane. Filling and bonding the slab back together with a high strength epoxy is a great way to seal the crack. However, the slab may still break open along the weak point - the fractured concrete along the crack itself where small ...
Pros and Cons of Buying a House on a Concrete Slab
Concrete slab foundations are more common in states with warm climates where the ground is less likely to freeze and cause the foundation to …
Signs of Concrete Damage | Concrete Repair | Concrete ...
Symptoms of Concrete Problems No matter the cause, cracked, broken and sunken concrete can have a negative effect on your home's curb appeal. Thankfully, concrete can typically be repaired rather than having to be replaced. In fact, it can often be stabilized permanently, so you can restore your home's value along with your peace of mind.
8 Truths about Concrete Moisture - Concrete Moisture
The capillaries in the concrete act like a sponge that can soak up direct water sources. In addition, when the humidity of the air outside the slab is high, the concrete can start absorbing moisture instead of releasing it or it can impede the drying process altogether. …
What is the necessity of providing joints in concrete? - Quora
Answer (1 of 8): You'll see two types of joints in most concrete structures: control and construction. Control joints allow concrete a pre-determined place to crack as it shrinks during the setting period. They are usually cut/scribed into the concrete (for slabs) about every 10 feet. The cut pr...
what are the materials use in concrete alternative to sand
Concrete Alternatives. In addition to cement substitutes, there are other ways of making concrete more sustainable, based on two core environmental principles—recycle and reduce. These alternatives include: The use of recycled aggregate materials and preparations that results in reduced amounts of concrete needed to complete the job ...
Puyallup Slab Leak | Puyallup Slab Water Leaks | Puyallup ...
Puyallup Slab Leak. Langley Water is at your service if you are experiencing slab leak problems in Puyallup, WA. A Puyallup slab leak occurs when there is a leakage in the plumbing system under the concrete slab foundation over which many modern houses are built.
Parking Structure Maintenance
Symptoms of deterioration include cracks, leaks, spalls (areas where concrete has broken off completely) and efflorescense (salt staining), among others. These symptoms are merely red flags that tip you off to larger problems. Realizing that there exists a problem - or a potential problem - is half the battle. When evidence of deterioration is
what symptoms are of substandard concrete slab
Aug 11, 2009· So if the symptoms go in three days it was a, Everything from the concrete slab its built on upwards has been found to be substandard The concrete,... Know More The Best of the Worst List: Major Defects That Matter,
FAQs Air Duct Cleaning Frequently asked questions by DUCTZ
concrete slab, etc., all of which require different equipment and cleaning methods. ... people to get into business using substandard or inappropriate equipment and inexperienced laborers and/or subcontractors. They often ... Proper Air Duct Cleaning may Increase system efficiency, reduce the symptoms of allergies and asthma, extend equipment ...
Causes for Accelerated Structural Deterioration of ...
Substandard workmanship in RCC can be in the form of honey combing (insufficient compaction of concrete) or inadequate cover to reinforcement (improper placement of bars) or both. These lead to early corrosion of reinforcement especially in thin structural member.
Troubleshooting the Building Envelope
substandard materials. Symptoms of water infiltration in parking structures include efflorescence cr, acks and spalls.Building managers should beware of cracks on surface slabs that permit water to enter the concrete. But it should be remembered that deterioration begins within the slab out of view, Damage. visible from the deck is often only ...