GCP Applied Technologies SDS™ STRUX® Slab-On-Grade Design Software enables the Engineer to design slab-on-grade using the latest in synthetic macro fiber technology. STRUX® 90/40 Synthetic Macro Fibers are a unique form of high strength, high modulus synthetic macro reinforcement that is distributed uniformly throughout the concrete matrix. STRUX® 90/40 fibers adds toughness, impact and fatigue resistance to concrete and can replace welded wire mesh, steel fibers, or rebar for crack control secondary reinforcement.
The use of synthetic macro fibers as a replacement for crack control in flooring applications is becoming more accepted due to various advantages such as tight crack control, ease of use, safe handling, construction placing techniques, faster slab construction, and the elimination of corrosion potential.
GCP’s SDS™ software is a user-friendly, flexible software tool for designing slab-on-grade and can be used to design a variety of light to heavily loaded commercial, industrial, and educational facilities.
The software program was developed to aid in determining which design is the most cost-effective for long-term performance under given conditions. Engineers enter slab parameters, such as slab thickness, concrete strength, sub-surface soil conditions, and load factors. SDS™ provides the most advantageous dosage rates of STRUX® 90/40 fibers dependent on the input parameters.
The software is primarily based on the Yield Line Theory (1960, 1962, 1983), Technical Report 34 from the British Concrete Society (2003), Eurocode 2, and ACI-318 and 360.
Consultation and availability of the GCP SDS™ is accessible through the local GCP Representative.
This information is provided as a guide. Final design decisions of the concrete slab are the responsibility of the engineer of record.
Examples of projects where SDS™ software was used to designate the most efficient and cost effective dosage of STRUX® 90/40 fibers to meet design specifications, based on a Modulus of Subgrade Reaction of 100 lbs/in.3 (28 MPa/m2):
|Vehicle Parking Garage|
|Loading 10,000 lbs||10,000 lbs|
|Load conditions||4 wheels on two axles, 35 psi tire pressure|
|Fork lift load||None|
|Proposed design thickness||5 in.|
|SDS™ Software design recommendations||3.5 lbs/yd3 dosage @ 4,000 psi concrete|
|Office loading||500 lbs/ft2|
|Load conditions||Uniform – file cabinets, desks, foot traffic|
|Fork lift load||None|
|Proposed design thickness||4 in.|
|SDS™ Software design recommendations||3.5 lbs/yd3 dosage @ 3,000 psi concrete|
|Joint conditions||Doweled joints; 15 ft x 15 ft|
(pneumatic – 125 psi),
|Fork lift load||10,000 capacity fork lift, single axle load = 22,200 lbs|
|Proposed design thickness||6 in.|
|SDS™ Software design recommendations||4.7 lbs/yd3 dosage @ 4,000 psi concrete|
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We hope the information here will be helpful. It is based on data and knowledge considered to be true and accurate and is offered for consideration, investigation and verification by the user, but we do
not warrant the results to be obtained. Please read all statements, recommendations and suggestions in conjunction with our conditions of sale, which apply to all goods supplied by us. No statement,
recommendation, or suggestion is intended for any use that would infringe any patent, copyright, or other third party right.
GCP, GCP APPLIED TECHNOLOGIES, SDS and STRUX are trademarks, which may be registered in the United States and/or other countries, of GCP Applied Technologies Inc. This trademark list has been
compiled using available published information as of the publication date and may not accurately reflect current trademark
ownership or status.
U.S. Patent Nos.: 6,569,525; 6,569,526; 6,758,897; 6,863,969
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GCP Applied Technologies Inc., 62 Whittemore Avenue, Cambridge, MA 02140 USA.
In Canada, 294 Clements Road, West, Ajax, Ontario, Canada L1S 3C6.
This document is only current as of the last updated date stated below and is valid only for use in the United States. It is important that you always refer to the currently available information at the URL below to provide the most current product information at the time of use. Additional literature such as Contractor Manuals, Technical Bulletins, Detail Drawings and detailing recommendations and other relevant documents are also available on www.gcpat.com. Information found on other websites must not be relied upon, as they may not be up-to-date or applicable to the conditions in your location and we do not accept any responsibility for their content. If there are any conflicts or if you need more information, please contact GCP Customer Service.
Last Updated: 2019-01-28