TYPES OF SERVICE DRAWINGS USED FOR PRECAST DETAILING

Types of Service drawings:

• Crane drawing
• Lift drawing
• PT drawing (Post tension)
• Mechanical service drawing
• Electrical service drawing
• Fire service drawing
• Steel detail drawings
• Hydraulic service drawing

1. Crane drawings
   1. Refer crane drawings for loading platform location, Crane tonnage & its relevant circles and other crane related data’s. (Refer Fig.01)

Fig .01 (Ref. Crane drawing)

2. Lift drawings

1. 1. Refer these drawings for lift door opening size & set-out, lift door fitment rebates, landing RL’s, penetrations and rebates for call buttons & indicators, service hatch openings, Unistrut’s locations, lifting eye locations and loading factors, switch cut-out on final floor and other lift related data. (Refer Fig.02)

Fig .02 (Ref. Lift door & penetration details)

3. PT drawings

1. 1. Must refer these drawings for PT tendons passage location. Wherever the PT tendons passing through the precast we must provide block-outs to suit accordingly. The nominal size of block-outs for PT to pass through as per engineer requirements. If not shown on any drawings, we need to raise RFI (Request for information). (Refer Fig.03)

Fig .03 (Ref. Post tension drawing- PT)

4. Mechanical service drawings

1. 1. Refer these drawings for mechanical openings in slabs & walls. Mainly for duct works, garbage chutes, kitchen exhaust chutes, stair pressurization openings, etc. (Refer Fig.04)

Fig .04 (Ref. Mechanical service drawing)

5. Electrical service drawings

1. 1. Refer these drawings for electrical penetration requirements in slabs & walls. Mainly for communication, power and other electrical related accessories to pass through. (Refer Fig.05)

Fig .05 (Ref. Electrical service drawing)

6. Fire service drawings

1. 1. Refer these drawings for Fire service penetration requirements in slabs & walls. Mainly for fire hydrants, sprinkler system and its pipe accessories to pass through. (Refer Fig.06)

Fig .06 (Ref. Fire penetration drawing)

7. Steel detail drawings

1. 1. Refer these drawings for Steel to precast connection details. Mostly if some connection like this present, we will get intimated beforehand. (Refer Fig.07)

Fig .07 (Ref. Steel drawing)

8. Hydraulic service drawings

1. 1. Refer these drawings for Hydraulic service penetration requirements in slabs & walls. (Refer Fig.08)

Fig .08 (Ref. Hydraulic service drawing)