Clt Concrete Composite Floor
Timber concrete composite floor systems skidmore owings merrill llp woodworks webinar 13 september 2017 design methodology for composite clt floors 1.
Clt concrete composite floor. Clt walls have also been used to support precast concrete floors where it is considered that the increased thermal mass of a. Select composite fastener type determine slip stiffness ks per manufacturer 3. Precast vs on site pour. Timber concrete composite floor technology is catching on in north america as a high performance solution for long spans in commercial and industrial buildings.
By preliminary calculation it can easily be shown that for the adopted thickness of the concrete deck the neutral axis of the clt concrete composite cross section is located within or very near layer 2. For the clt concrete composite floor with a 5 layer clt panel the γ method cannot be used directly. Comprised of timber beams or panels that are joined to a concrete slab by shear connectors the resulting composite floor can be stiffer and stronger than non composite alternatives. Calculate sectional properties of clt eieff eaeff per us clt handbook nds other 2.
I m looking to use concrete topping on a glt clt floor system with the goal of improving vibration performance. 1 i shouldn t bother with composite action but rather just utilize the extra mass or. This bench is a scaled down model of the clt concrete composite floor on which is sits. The cross laminated timber clt concrete composite floor can successfully address the issues of conventional wood product and become an attractive alternative material for conventional reinforced.
The floor system is designed to be a continuous beam over the band beam supports that require both positive and negative bending resistance reinforced concrete slab in compression and tension. Floor class i klh strength concrete strength total height span ℓ mm mm mm 6 5 m 160 80 240 7 0 m 160 90 250 7 5 m 180 90 270 8 0 m 180 95 275 8 5 m 200 95 295 9 0 m 200 100 300 06 klh tcc floor element single span beam verification of vibration for floor class i. The concrete slab can be poured on site or precast in a shop environment. In general terms a wood concrete composite wcc floor system consists of a.
And i m wondering about the degree composite action required. The proposed floor structure for this column layout is a 225 mm 9 in thick composite clt floor spanning between 1 m 3 2 ft wide x 225 mm thick composite clt band beams on column lines. It was created as a student project before the design building was even built to explain the novel floor system used in this building. Clt floor slabs can also be used to form wood concrete composite floors where the clt slab is used as a permanent formwork with horizontal shear transfer between materials being provided by shear plates and screws.
Either timber panels or beams can be used and there are many methods of creating composite action between the timber and concrete.