QUALITY ENGINEERING AND CONSTRUCTION

In-Situ Field Density Test (Nuclear Method) by Direct Transmission

Equipment: Troxler Model 3440 Surface Moisture Density Gauge

1. The test location (point) is selected by the client representative in which the soil compaction and density is to be determined. 2. The drill plate is placed over the test location to serve as a guide for the drill rod. 3. The drill rod is driven vertically into the soil to a depth of 150mm to 300mm using a hammer.

4. The nuclear…

Floor screeding works (substrate for marble tiled floor)

This is a comprehensive and photographic method statement of floor screeding works. Screed can be final finish or a substrate of the final floor finishes like homogenous tiles, marble floor or granite floors. This step by step method can be useful for all newbies who would like to learn floor screeding.

The step by step method is listed below:

Create level pegs on the floor to be screed. This…

Pull-out test of cast-in channel (Halfen) for curtain wall

Introduction:

Cast-in channels for curtain wall installation are fully embedded in concrete. These channels carry the loads from the curtain wall and transfer them to the main structure. Thus, these cast-in channels shall be tested to demonstrate a minimum performance as required by the engineer.

The testing shall be carried out by an independent, approved laboratory.

  Equipment used:

-…

Assessment of Concrete Strength by Windsor Probe Test

Introduction:

Penetration resistance test is based on the theory that the depth of penetration of a metal probe (Windsor Probe) fired into a concrete surface depends on the strength of concrete.  However, this relationship is significantly influenced by the properties and proportions of the coarse and fine aggregates. An individual correlation should therefore be prepared for each different…

Method Statement of Slab Construction (Cast-In Situ)

Originally posted on Quality Engineering and Construction:

This method is meant to help the new graduates understand how to construct a cast-in situ slab. I try to minimize the words and fill many photographic images in sequence as pictures could expound better than words. So here we go.

Erect the slab formwork either using conventional scaffold framing and timber combination or using system…