Rebar Join Welding Design
2
PROJECT : REPUBLIC POLYTECHNIC PROJECT REF : WELDING CALCULATION FOR REBAR JOIN Sheet No : 1 of 1 Date : 4 March 2013 Designed by : Utaya Kumar Checked by : Jeffrey Yu Objective : Calculate and proposed welding length to rejoin the Rebar Design Assumption 1. These designs have been done based on BS5990-1:2000. 2. Main Bar size = 20 mm 3. Designed yield strength of reinforcement bar and shear link = 460 N/mm 2 . 4. Fillet Weld Size = 6 mm. 5. Allowable Stress for Grade 43 steel fillet weld = 115 N/mm 2 . 6. Strength for Grade 43 steel fillet weld = 805 N/mm 2 . Calculation A. Main Rebar Fillet Weld Size = 6 mm Throat Length, a = 0.7 x 6 mm = 4.2 mm Length required for welding, L w = 460 × π× 20 2 4 805 × 0.8 = 224 mm Effective length of weld for both sides = 224 2 = 112 mm ≃ 115 mm Actual length of weld for both sides = 115 + (2 x 6) = 127 mm Distribute = 127 + (2 x 6) 2 = 75.5 mm ∴ Required Welding length for T20 = 75.5 mm each side. Proposed Welding Length for T20 = 80 mm each side . Typical Welding Connection For Main Bar
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Transcript of Rebar Join Welding Design
PROJECT : REPUBLIC POLYTECHNIC PROJECT
REF : WELDING CALCULATION FOR REBAR JOIN
Sheet No : 1 of 1Date : 4 March 2013Designed by : Utaya KumarChecked by : Jeffrey Yu
Objective : Calculate and proposed welding length to rejoin the Rebar
Design Assumption
1. These designs have been done based on BS5990-1:2000.2. Main Bar size = 𝜙 20 mm3. Designed yield strength of reinforcement bar and shear link = 460 N/mm2.4. Fillet Weld Size = 6 mm.5. Allowable Stress for Grade 43 steel fillet weld = 115 N/mm2.6. Strength for Grade 43 steel fillet weld = 805 N/mm2.
Calculation
A. Main Rebar
Fillet Weld Size = 6 mm
Throat Length, a = 0.7 x 6 mm= 4.2 mm
Length required for welding, Lw = 460×
π×202
4805×0.8
= 224 mm
Effective length of weld for both sides = 2242
= 112 mm≃ 115 mm
Actual length of weld for both sides = 115 + (2 x 6)= 127 mm
Distribute = 127 + (2 x 6) 2= 75.5 mm
∴ Required Welding length for T20 = 75.5 mm each side.
Proposed Welding Length for T20 = 80 mm each side.
Typical Welding Connection For Main Bar
