In modern industrial warehouses, the concrete flooring slab is one of the main total cost components. Thus, designers of these structures are under a constant pressure to reduce the total slab cost, while maintaining the expected functionality and durability of the slab. Due to technological progress in last decades and innovations in the concrete industry, it is now possible to produce steel fiber reinforced self-stressing concrete (SFRSSC) floors, which are far thinner, while providing various advantages and performance improvements compared to traditional concrete floors [1]. One key aspect of warehouse floor design impacted by reductions in slab thicknesses is the design and detailing of anchors for warehouse racking systems. Commonly available design aids for anchors from suppliers have focused on embedment of anchors in traditional concrete floors, ignoring any potential benefits from embedment in SFRSSC floors. As reported in reference [2], a large series of anchor pullout tests was recently completed on SFRSSC samples to develop characteristic design values for this new material combination. These results are utilized in this paper to complete a technological and economic comparison of alternative design solutions for three different example warehouse situations. For all examples, 20200 m 2 storage warehouses are assumed with load levels varying from a "lightly loaded" (60 kPa) warehouse, a 'heavily loaded' (160kPa) warehouse, and a high-bay warehouse. In the design examples, floors are designed according to the guideline TR34 for fiber reinforced concrete and ACI standard for plain concrete floors. Anchor pull out capacity data are obtained from tests and the Fastening Technical Manual (FTM). As presented herein, overall costs for the SFRSSC floor provide significant economic advantages due to reduced volume of concrete and associated reductions in production costs provided by a reduced slab thickness for the same loading. Comparison of the racking anchor detailing includes a limited direct cost impact of SFRSSC floors. Shorter anchors used for SFRSSC floors allow for faster installation per anchor.

Industrial concrete warehouse slabs constructed with steel fibre reinforced self-stressing concrete (SFRSSC),with a moderate to high content ( ≥ 30 kg•m -3 ) of steel fibre reinforcement and expansive cementitious additives, can provide equivalent load bearing capacity as traditional reinforced or unreinforced concrete slabs with a reduced slab thickness. The reduction in slab thickness is possible due to improved flexural capacity of SRFSSC together with a reduced propensity for cracking and curling, common issues in traditional concrete slabs, caused by shrinkage. By reducing the slab thickness, the allowable length of mechanical anchors, commonly embedded in concrete slabs to restrain the racking system, is impacted. Anchors,and accompanying design aids and guidance provided by anchor manufacturers, available in the market are generally produced with traditional concrete slabs with higher thickness in mind. There is generally a lack of guidance and design aids for applications with thinner slabs constructed with SFRSSC. This paper presents data from over 250 pull-out test results of screw-type anchors extracted from SFRSSC slab specimen. The test series varies parameters from both the screws (diameter and length) and the SFRSSC slabs (slab thickness, fibre type/content, and concrete compressive strength). Testing was completed in accordance with relevant European Assessment Documents and results conclude combinations of anchor type and slab details (thickness, fibre type/content, and concrete compressive strength), where equivalent or improved tensile capacity is achieved for screw anchors embedded in SFRSSC.