Question

1. A transfer girder is to support one symmetrically located column having a factored load of P (5000+200N) KN and is supported on 600mmx600mm square columns. The clear span of the transfer girder is 6m. The overall depth of the beam is (h = 4000mm) and the width of the beam is (b=400mm). Using C25 concrete and S360 reinforcing steel, Design the beam by STM method. (Neglect self-weight of the beam). Note: N=3.

Answer 1

15000 KN.m

Step-by-step explanation:

To design the transfer girder using the STM (Simplified Theory of Moments) method, we need to follow the steps outlined below:

Step 1: Calculate the factored load (P):

Given: P = 5000 + 200N KN

Let's substitute N = 3 into the equation:

P = 5000 + 200(3) = 5000 + 600 = 5600 KN

Step 2: Calculate the factored moment (Mu):

Mu = P x L^2 / 8

= 5600 KN x (6m)^2 / 8

= 15000 KN.m

Step 3: Calculate the design moment (Md):

Md = Mu / γm

(where γm is the partial safety factor for moment)

The value of γm depends on the design code or standard being used. For example, in Eurocode 2, the value of γm for reinforced concrete beams is typically taken as 1.35. However, since the specific code or standard is not provided in the question, we cannot calculate the design moment without this information.

To proceed with the design, we need to know the value of γm as specified in the relevant design code. Once that value is known, we can calculate the design moment and continue with the design process.

It is advisable to consult a structural engineer or refer to the appropriate design code or standard to obtain the required values and ensure accurate calculations for the design of the transfer girder.