Our Services

Our Services

Structural Assessment
 

Retrofitting Management
 

Retrofitting Construction
& Design

Concrete Repair /
Restoration

Value Engineering
 

STRUCTURAL ASSESSMENT

Coring works on structural elements, which we extract samples on-site. The samples collected shall be tested by a third party laboratory to measure the compressive strength and other properties of concrete.
The conventional type of site investigation, where the element to be investigated is chipped-off concrete cover to expose reinforcing bars. This method is usually used on foundation and/or deep members, where the rebar scanning, and ultrasonic pulse technology is out of range.
The hammer measures the rebound of a spring-loaded mass impacting against the surface of a sample. The test hammer hits the concrete at a defined energy. Its rebound is dependent on the hardness of the concrete and is measured by the test equipment. By reference to a conversion chart, the rebound value can be used to determine the concrete's compressive strength.
Onsite mapping and visualization of rebar. This technology is used to investigate the spacing, sizes and depth of rebar inside the concrete structure onsite instead of the conventional chipping (destructive) of concrete member. This can also help to minimize mishits (drilling on bars) during Drilling of holes and Concrete Coring tests.
The latest technology used to investigate the quality of hardened concrete on-site. This method measures the time of travel of an ultrasonic pulse passing through a concrete tested. Higher velocity obtained shows a denser, uniform and homogenous concrete, which we can relate to the Concrete's Strength. This method is also used to identify concrete defects like Honeycombs, Cold-joints, Cracks, and discontinuity on structural members.
On-site testing to investigate the surface tensile strength. This testing can also be used to investigate the adhesion properties of composite material to the substrate material. The following items uses this test - (Paints, Eposxy, FRPs, and Laminates)

RETROFITTING MANAGEMENT

To achieve a successful repair/retrofit project, a thorough investigation of the structure involved is imperative. Existing structural condition shall be recorded and analyzed. Structural assessment shall be done with physical tests and computer modeling.

Retrofitting projects shall follow a planned schedule to avoid delays and add-on costs. Contingencies shall as well be considered as repair projects have plenty of unforeseen scenarios. An experienced contractor can lessen such unforeseen problems.

Investigation reports and analysis shall be the basis of appropriate retrofit/enhancement application. Methodologies shall conform to site conditions and applicability of the selected method.

Safety in the construction industry is number one consideration. It is everybody’s concern and responsibility. Standard safety regulations shall be followed plus special safety precaution in the application of specialty chemicals. Material Safety Data Sheet shall be available prior to use of these materials.

RETROFITTING CONSTRUCTION AND DESIGN

A Conventional type of structural strengthening by encasing a structural element with steel plates. This method lessens the required area of concrete section enlargement
A Conventional type of structural strengthening by encasing a structural element with concrete. This method is least expensive compared to other method. The disadvantage of this method is it occupies larger spaces (for beams, the headroom is compromised), and it is messy to implement.
The Conventional type of structural strengthening by adding additional members either column, beams and supports. The best material for additional support is Structural Steel.
Another Conventional type of structural strengthening for the purpose of seismic upgrade. Consists of combined structural brace in a building, designed to allow the building to withstand cyclical lateral loadings, typically earthquake-induced loading.
The Prestressed Carbon Plate System is the latest method for flexural strengthening of long span girders and beams, for buildings and bridges. The principle is derived from the external post tensioning process. It is applied by a fixed anchor on one end, and tensioning point at the other end.
This is the latest technology for structural strengthening & retrofitting by installing FRP materials. The FRP strength is many times stronger than steel, and the weight is much lesser. This method was first introduced in Japan in the 80s, the ACI adapted in the late 90s, drafted and approved the guidelines for the design and installation of FRP.

Advantages:

  • Easy to Install
  • Lightweight Material
  • High Tensile Strength
  • Can be installed in tight spaces

    • CONCRETE REPAIR / RESTORATION

    These defects can be rectified by several methods – hand patch, chip and patch, form and pour and by shotcrete. Again, each method has its own advantage for every type of repair. The engineer always be responsible for the best method.

    Grouting works involves non-shrink cementitious & polymer materials. Different grout applications are in heavy machinery foundation, high vibration motor foundation, column base plates.

    Cracks in concrete are normal as concrete is weak in tension. Some cracks may not need repairs but most cracks must be rectified, depending on its effect on the structure. There are several methods of crack repairs such as routing & sealing, gravity method, high & low pressure injection. The engineer shall select the most appropriate method to achieve a successful and economical project.

    VALUE ENGINEERING

    With the Collaboration of our Site Engineers, Structural Engineers and Quantity Surveyor Engineers; re-evaluation for other methodology, material and design possible based from the applied restrictions and conditions of the client shall be calculated to aim an economical cost for the project.

    Other Services

    • Sealant Application
    • Industrial Floor Coating
    • Seismic Joint System