Damp proofing is waterproofing applied to foundation walls to prevent moisture from passing through the walls into interior spaces of a building
Damp-Proof Course (DPC) - A horizontal barrier designed to resist moisture rising through the structure by capillary action - a phenomenon known as rising damp
Raft foundation is reinforced concrete slab that is supported on a compacted hardcore base that is bigger than the raft. The procedures in construction the foundation involves checking the soil properties, and making the edge of the raft stepped to make a toe so the outer leaf of the wall goes below ground. The slab is reinforced with steel, a radon barrier is added, and a damp proof course is put in.
A course of construction policy is insurance purchased by a builder to cover materials, fixtures, equipment, and the building itself. As the name implies, it is only good during the course of construction, or as long as the work is going on.
This is a heavy gauge polythene laid under the concrete to stop dampness rising upwards
The slab is part of the overall foundation and footing system of the building. If it is outside, then it doesn't need to be water-proof or damp-proof. All interior foundation walls need to be water-proofed or damp-proofed depending on the hydrostatic pressure, found in the surrounding earth. Foundations and slabs-on-ground should be placed on good, compacted soil, or other acceptable aggregates. A solid slab should be a minimum 100mm thick.
crushed surfacing base course (CSBC)
Damp Proof Course is one meaning.
DEJ likely stands for "Damp-Proof Course Elevation Joint." It is a mark used in construction blueprints to indicate the specific location where a damp-proof course and elevation joint is to be installed to prevent moisture penetration in a building.
Damp proofing course. A damp-proof course (DPC) is a barrier through the structure by capillary action such as through a phenomenon known as rising damp. Rising damp is the effect of water rising from the ground into your property. The damp proof course may be horizontal or vertical.
So moisture seep into buildings
prevent moisture from caving into a building
Damp Proof Course. In modern houses it usually consists of a roll of polythene set into the brick/block courses about six inches above the ground level to prevent damp in the ground from being sucked up into the walls. Matt
A damp proof membrane in construction projects helps prevent moisture from seeping into buildings, reducing the risk of mold, rot, and structural damage. It also improves energy efficiency by preventing heat loss and can increase the lifespan of the building.
a vertical damp proofing course serves the function of preventing the entry of moisture through the external face of the wall, resulting from beating of rain showers on the external face or moisture in the external environment.
This will depend on the construction of the basement and whether the structure has failed, or there is an existing damp-proofing that has failed. Another factor will be the drainage external to the basement. If the water pressure from the soil is very high because of poor drainage, many damp-proofing systems will fail.
Damp proofing is used in relation to construction to ensure that buildings are waterproof when they are built. Damp problems can cause major structural problems so ensuring they remain dry is essential.
SSS - APEX
You can read about construction and what it is all about at http://runescape.wikia.com/wiki/Construction . Try to think about it before you enter a course in construction.