Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Assignment:-Continuous Prestressed Concrete Beam Design
A cast in-place 3-span prestressed concrete T-beam is to be designed. The T-beam concsists of an 8-in thick reinforced concrete deck slab integrally cast onto rectangular girders that have webs 48-in deep by 15-in wide. The spans are to be 90,, 120, 90 ft.Adopt the following properties:-f’c = 6ksi-fpu=270ksi, dt=0.5in-k=0.005/ft, mu=0.2. Up to 19 tendons can be bundled into a 3.0-in dia. duct.
Design:
1. One T-girder to balance self-weight, where the slab is 8-ft wide.2. Use end-to end continuous prestress, with a load balancing approach. Attempt to minimize the tendon force by maximizing the drape. Balance as closely as practicable the dead load only by assuming 15% time-dependent losses.3. Check stresses and losses. For this, draw stress-blocks at critical locations of maximum positive and negative moments in each soan.4. Determine the ultimate moment capacity of the designed section at key positive negative and positive moment locations.
5. Determine the maximum uniformly distributed live load that can be carried over the span based on achieving U=1.2D + 1.6L
-Service load conditions. For this check allowable stresses, including temperature stress effects as per AAASHTO and also deflection limits (L/800).-Ultimate load conditions without moment-redistributuion (an elastic solution).-Ultimate load with moment redistribution permitted. Note you may need to add additional mild steel at the interior support regions to improve section ductility.
6. Based on the resulting shear force distribution, design the shear reinforcement.
Calculate Roller Production An excavating contractor determined through a test strip, that a smooth steel-wheel vibrating roller compactor operating at 3-mph can compact a 6-in
Question In assortment of dams in drainage channels, what are the main advantages of using rubber dams instead of steel-gate dams ? Answer Key Advantages of rubber d
% of water
how to draw shear moment diagram for cantileaver beam
how to convert a varying distributed load to a uniformly distributed load
maintenance of wbm roadstion
Solubility: Bitumen is soluble in carbon disulphide (CS2). The Indian specifications require that the bitumen should have 99 per cent solubility. Lesser value indicates prese
Question It should be necessary that raking piles of a bridge abutment be placed under an embankment ? Answer For a bridge abutment to be supported on raking piles with div
Explain Box jig? a) The box jig is so named because of its box shaped construction, closed from most of the sides. b) It is normally designed for those components having awk
define Fathometer in civil engineering field #Minimum 100 words accepted#
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd