Suspended Concrete Floor Drawing

A suspended floor is a ground floor with a void underneath the structure.

Suspended concrete floor drawing. Only 6 8 concrete topping required. The main reinforcement should be of the order of diameter at 9 centres and the distribution steel 3 8 diameter at 12 centres. When selecting a floor construction there are a number of functional requirements that need to be considered. Durability strength and stability resistance to ground moisture fire safety.

Build 139 build 151 december 2013 january 2014 december 2015 january 2016 31 design suspended floors right common questions about designing and building suspended floors using nzs 3604 2011 the branz technical helpline often receives queries for designing and building suspended timber floors and dealing with uplift. Suspended concrete slab is referred to a cement slab that is not in contact with the ground. This type of concrete slab construction requires different concrete slab design from the one we normally see that is cast on the ground. Industrial floor designresidential concrete slabs often have few design requirements to get between the contractor and completion of the job if the contractor knows what he or she is doing and knows what the customer wants then the lack of specifications is probably a good thing.

This results in a cost savings in concrete of 25 50. 3 responsibility for design 4 slab on ground floor footings 4 1 the function of footings 4 2 footing types 4 3 slab design 4 4 construction issues and maintenance 5 suspended floors 5 1 types of suspended floors 5 2 terminology and design principles 5 3 design procedure 5 4 insitu concrete 5 5 composite concrete steel permanent steel formwork. Suspended concrete floor construction is increasingly the most common flooring system specified in residential construction. The suspended reinforced concrete slab is tied into the external capping beam at floor level.

Alternative floor slab detail. Using a composite steel and concrete design the floor slab can be thinner than conventional residential suspended slab systems. The floor can be formed in various ways using timber joists precast concrete panels block and beam system or cast in situ with reinforced concrete. The most common application of suspended slab in residential construction is used at garage floor where below the garage floor is a storage.

The joist is manufactured from pre galvanised high strength steel in a one pass rollformer giving a high degree of accuracy at a fast production rate. This reduces the overall embodied energy and makes for less costly construction. The ends are simply bolted. The top steel reinforcement is important.

Suspended concrete floors can be supported on timber structures and do not necessarily require steel or masonry support if designed by a qualified engineer with experience in timber design.