Foundation on Sand

A load take down has revealed that the characteristic load at the column positions is 3500 kN. A small site investigation has been undertaken and the following reported: medium dense sand from ground level to 30m depth a peak angle of shearing resistance of ?’p= 34o (c’ = 0) groundwater is at 2.0m depth average N below base …

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Foundation on Clay

A load take down has revealed that the characteristic load at the column positions is 3500 kN. A small site investigation has been undertaken and the following reported: clay from ground level to 30m depth an SPT trend equal to 22 + 2z (z = depth below ground level). average Plasticity Index value of 35% Consider a 1.2m deep …

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Water stop

Water stops are necessarily used in construction joints to prevent water from passing through concrete joints which leads to avoid corrosion in steel bars. In some cases, it is required to weld/overlap two or more water stoppers like in wall junctions. Types, sizes, colours, etc. are varying from supplier to another.

Loads from roof finishes

Why the loads from roof finishes are higher than the other floors, this sketch shows commonly used layers for isolation.

Types of offshore platforms

An oil platform is a large structure used to drill and produce oil and/or natural gas from the seas or oceans. Depending on the circumstances, the platform may be floating or an artificial island or attached to the ocean floor. A typical platform may have around thirty well heads located on the platform and directional drilling …

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Load test for hollow core slabs

This could be found in the ACI318, Chapter 20,”Strength Evaluation of Existing Structures” Section 20.3 “Load Test Procedure”. Based on this reference, the total test load, including the dead load already in place, shall not be less than “0.85 [(1.4D + 1.7L)] – un-factored weight” of the slab where D is the total un-factored dead …

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