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.
Q. Velocity distribution and flow formulae? Variation in velocity along a vertical in channel cross section is known to follow logarithmic distribution, maximum velocity being
Q. The field density of a compacted fill is determined by means of a core cutter whose empty weight is 1000 g and volume is 1000 cm 3 . The cutter full of soil weights 2890 g. If
Q. What is Rail Lubricators? 1. P & M type of lubricators - These lubricators can be used for lubrication of FF rails as well as BH rails. 2. Elgi grease pump - Elgi Bucket
Q. Holes in steel plates connecting to H-piles There are two types of holes present in the steel plate associated to H-piles in the pile cap. The first type of holes is design
Define Role of Diver in Underwater Inspection of Bridge? Diver's role is primarily to point out a potential scour problem. The diver can use one of the following equipment to m
Obtain the values and direction of the supporting reactions of the truss given below. Use the method of section to determine the forces in each member.
Q. Constriction of waterway at bridges? Constriction of waterway at bridges is effected by extending the approach banks to cover spill area or, in addition, part of active chan
what is the function of longitudinal joints in concrete road pavements?
Immersed tube method for underwater crossing includes the following basic construction steps: (i) Prefabricating long tunnel units (concrete orsteel shell) in a dry-dock or shi
uses of Earth moving equipment
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