2 research outputs found
Performance observations of geosynthetic reinforced bridge abutments
Geosynthetic Reinforced Soil - Integrated Bridge System (GRS-IBS) is a technology which has been around for almost 40 years in the United States but is now being pushed by the FHWA due to improved performance and promised cost savings in the construction of small bridges. GRS-IBS is a mechanically stabilized earth (MSE) wall acting as the abutment with a bridge deck placed on top. The vertical spacing of the geosynthetic reinforcement in a MSE wall is much larger than in a GRS-IBS abutment. MSE walls have reinforcement vertical spacing of on average 24 inches compared to GRS-IBS bridge abutment vertical spacing of 8 inches. The GRS-IBS process starts by removing material to a depth and area of the foundation for the abutment, then backfill is placed and compacted. Once the backfill is compacted, a layer of geosynthetic reinforcement is placed along with a row of precast concrete blocks to form the faces of the abutment. This process is continued until the abutment is at the level needed for the bridge girders. Bridge girders are then placed directly on the geosynthetically reinforced backfill abutment. Once the girders are in place, the abutments are then brought up to road level and pavement can be placed for the approach
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National Psoriasis Foundation Priorities for Patient-Centered Research: Proceedings from the 2016 Conference
The National Psoriasis Foundation (NPF) is developing an agenda for patient-centered research to help patients and their caregivers make more informed health care decisions by engaging psoriasis patients in prioritizing comparative effectiveness research (CER) topics. The NPF has created a novel patient-centered research platform known as Citizen Pscientist (CP), allowing patients with psoriasis and psoriatic arthritis to register and contribute their health data. The CP Governance Council administered an online 23-question CER survey to the CP community and held a structured meeting on December 3, 2016, with patients and researchers to review CER survey results and discuss patient-centered research priorities. Of the 2,945 patients surveyed, 792 patients responded. Three CER topics were deemed to be of high priority for the research agenda: 1) Treat-to-target therapy for psoriasis, 2) Psoriatic arthritis screening questionnaires for early detection and treatment of psoriatic arthritis, and 3) Comparative effectiveness of home-based phototherapy for psoriasis