“Lift lagane ke liye kitni jagah chahiye?” — Ye woh sawal hai jo hum Cmax Engineering walon se site visit par sabse zyada poochha jata hai. Ghar ban raha ho ya purana ghar ho, apartment ho ya dukaan — har koi yehi jaanna chahta hai: pit kitna gehra khodna padega, upar kitni height chahiye, aur shaft ke liye kitni jagah chhodni padegi?
Lift companies aksar “pit 1500 mm, headroom 4500 mm” jaise technical shabd bol kar chali jati hain, aur customer confuse reh jata hai. Is blog mein hum in teeno cheezon — pit, headroom aur shaft — ko bilkul seedhi bhasha mein samjhate hain, standard measurements ke saath. Ye padhne ke baad aap site par khade hokar khud andaza laga payenge ki aapke ghar ya building mein lift lag sakti hai ya nahi, aur agar jagah kam hai to kya options hain.
Pehle ek simple picture banayein — lift ka “ghar”
Lift ko rehne ke liye ek khada khokhla structure chahiye — jaise kuein (well) mein balti upar-neeche hoti hai. Is structure ke teen hisse hain:
- Shaft: Woh khada “dabba” (chaaron taraf diwaaron se ghira) jismein lift ki cabin upar-neeche chalti hai — ground floor se lekar top floor tak.
- Pit: Shaft ka woh hissa jo sabse neeche wale floor ke neeche jata hai — zameen ke andar ek gaddha.
- Headroom (overhead): Shaft ka woh hissa jo sabse upar wale floor ke upar jata hai — chhat ke upar ki height.
Matlab poora shaft = pit (neeche) + floors ka hissa (beech) + headroom (upar). Teenon ka apna kaam hai, aur teenon ki jagah pehle se plan karni padti hai.
Pit kya hota hai — aur kitna gehra khodna padta hai?
Jab lift sabse neeche wale floor par rukti hai, to cabin ka farsh us floor ke barabar aata hai — par cabin ke neeche bhi kuch samaan hota hai: cabin ka frame, safety gear, aur neeche girne se rokne wale buffers (bade spring ya hydraulic shock-absorber). In sab ke liye floor ke neeche jagah chahiye — isi gaddhe ko pit kehte hain.
Standard pit depth:
- Residential/passenger lift (traction/MRL): lagbhag 1.2–1.5 meter (4–5 feet). Ye sabse aam measurement hai.
- Hydraulic home lift: Sirf 150–300 mm (6–12 inch) ya kuch models mein zero pit — kyunki hydraulic mein neeche buffer system alag hota hai. Isi wajah se purane gharon mein hydraulic popular hai — hydraulic vs traction ka farq yahan samjhaya gaya hai.
- Dumbwaiter (kitchen lift): Sirf 100–200 mm — dumbwaiter guide mein detail hai.
Pit ke baare mein 3 zaroori baatein:
1. Pit sabse pehle banta hai, sabse aakhir mein yaad aata hai. Foundation ya ground-floor slab dalne ke baad pit khodna lagbhag namumkin hota hai — neeche se beam, water tank ya soil aa jati hai. Isliye pit ki planning sabse pehle honi chahiye.
2. Pit mein paani nahi aana chahiye. Barsaat mein agar pit mein paani bharta hai to buffers aur safety gear kharab hote hain. Isliye pit ki waterproofing zaroori hai — Dhanbad ki barsaat mein ye aur bhi important ho jata hai. Monsoon care guide mein iska detail hai.
3. Pit mein utarne ke liye seedhi: Maintenance ke liye technician ko pit mein utarna padta hai — isliye pit mein ek chhoti ladder aur light ka provision rakha jata hai. Ye safety norm ka hissa hai.
Headroom (overhead) kya hota hai — upar kitni height chahiye?
Jab lift sabse upar wale floor par pahunchti hai, to cabin ka upar wala hissa us floor se upar nikal jata hai — cabin ke upar safety clearance, aur traction/MRL lift mein motor aur pulley bhi wahin lagte hain. Is upar wali jagah ko headroom ya overhead kehte hain.
Standard headroom:
- Residential/passenger lift (traction/MRL): lagbhag 4.2–4.8 meter top floor ke finished floor se lekar shaft ki chhat tak. Ye sabse bada “hidden” requirement hai — log pit to yaad rakhte hain, headroom bhool jate hain.
- Hydraulic home lift: Lagbhag 2.8–3.2 meter — motor neeche ya side mein lagta hai, isliye upar kam height chahiye.
- Low-headroom MRL options: Kuch modern MRL models 3.2–3.6 meter headroom mein bhi lag jate hain — purani buildings jahan upar jagah kam ho, wahan ye kaam aate hain.
Ek aam galti: Log top floor ki chhat (terrace) ko shaft ki chhat samajh lete hain. Asal mein shaft terrace se upar nikalta hai — lagbhag ek manjil jitna. Agar aapke building plan mein terrace ke upar koi structure nahi dikh raha, to architect se shaft-head ka provision poochhein.
Shaft kya hota hai — aur kitna bada hona chahiye?
Shaft woh khada khokhla structure hai jismein cabin, counterweight, guide rails aur ropes lage hote hain. Shaft ya to RCC/brick ki diwaaron se banta hai (nayi building mein), ya MS steel structure + glass/panel cladding se (purane ghar ya jahan diwaar na ho — retrofit guide mein detail hai).
Standard shaft sizes (andaruni clear size):
- 4-passenger (272 kg): lagbhag 1.5 m × 1.6 m — chhote gharon ke liye compact option.
- 6-passenger (408 kg): lagbhag 1.6 m × 1.8 m — G+2/G+3 gharon aur chhote apartments ke liye sabse aam.
- 8-passenger (544 kg): lagbhag 1.9 m × 2.1 m — apartments aur commercial buildings ke liye standard.
- 13-passenger (884 kg): lagbhag 2.1 m × 2.3 m — bade apartments, hospitals, malls.
- Stretcher/hospital lift: lagbhag 1.6 m × 2.4 m ya usse bada — stretcher seedha andar jaye, itni lambai chahiye. Hospital lift guide dekhein.
Cabin size hamesha shaft se chhota hota hai — beech ki jagah mein guide rails, counterweight aur door mechanism lagta hai. Isliye “cabin 1.1 × 1.4 m hai to shaft bhi utna hi hoga” — ye soch galat hai. Capacity aur size ka poora chart load capacity guide mein hai.
Shaft ke baare mein 3 zaroori baatein:
1. Shaft seedha (plumb) hona chahiye. Diwaar agar tedhi bani to guide rails seedhi nahi lagengi — lift jerk karegi ya aawaz karegi. Installation guide mein quality points diye gaye hain.
2. Shaft ke andar koi pipe/wire nahi. Plumbing, electrical ya AC ki line lift shaft mein daalna safety norm ke khilaaf hai. Shaft sirf lift ke liye hota hai.
3. Shaft ki diwaar mazboot honi chahiye. Guide rails ki brackets diwaar mein fasten hoti hain — kamzor ya khokhli diwaar par rail nahi tikti. Isi wajah se MS structure wala shaft aksar behtar rehta hai.
Ek nazar mein — standard measurements table
Neeche teenon cheezon ka quick reference hai (residential traction/MRL lift ke liye):
- Pit depth: 1.2–1.5 m (hydraulic: 0.15–0.3 m)
- Headroom: 4.2–4.8 m (hydraulic: 2.8–3.2 m; low-headroom MRL: 3.2–3.6 m)
- Shaft (6-passenger): 1.6 m × 1.8 m andaruni
- Shaft (8-passenger): 1.9 m × 2.1 m andaruni
- Power: Three-phase (6–8 passenger); bijli kharch ka andaza yahan
Note: Ye standard figures hain — har manufacturer ki GA drawing mein thoda farq ho sakta hai. Final dimensions hamesha lift company ki GA drawing se confirm karein.
Jagah kam hai to kya karein? — 4 practical options
1. Hydraulic home lift: Pit sirf 150–300 mm, headroom 2.8–3.2 m — purane gharon aur low-rise buildings ke liye sabse aasaan option. Speed thodi dheemi hoti hai, par G+2/G+3 ke liye kaafi hai.
2. Low-pit / low-headroom MRL: Kuch modern models kam pit aur kam headroom mein lag jate hain — jahan upar terrace par zyada height nahi nikaal sakte.
3. Bahar se MS structure shaft: Ghar ke andar jagah na ho to building ke bahar steel structure ka shaft bana kar usmein lift lag jati hai — balcony ya side wall ke saath. Purane ghar wali guide mein iske examples hain.
4. Machine-room-less (MRL): Alag machine room ki jagah bachti hai — MRL kya hota hai, yahan padhein.
Site survey mein hum kya-kya naapte hain
Jab hum free site survey ke liye aate hain, to ye 7 cheezein naapte aur check karte hain:
- 1. Shaft ki jagah: L×W naap kar dekhte hain kaunsi capacity fit hogi.
- 2. Pit ki sambhavna: Neeche khod sakte hain ya nahi — soil, beam, water tank check karte hain.
- 3. Headroom: Top floor se upar kitni height nikaal sakte hain.
- 4. Diwaaron ki mazbooti: Guide rail ke liye diwaar theek hai ya MS structure chahiye.
- 5. Power: Three-phase available hai ya single-phase par kaam chalana padega.
- 6. Approach: Machine aur material site tak pahunchega ya nahi — gali kitni chaudi hai.
- 7. Drainage: Pit mein paani ka khatra hai ya nahi.
Ye 30–40 minute ka survey hi tay karta hai ki aapke yahan kaunsi lift lagegi aur kitna kharcha aayega (Sample quotation ke saath). Booking se lekar chalu hone tak ka poora process is guide mein samjhaya gaya hai.
FAQs — Lift Pit, Headroom & Shaft Size
Q1. Lift ke liye pit kitna gehra khodna padta hai?
A. Standard passenger lift ke liye 1.2–1.5 meter. Hydraulic home lift mein sirf 150–300 mm ya zero pit bhi chal jata hai. Pit foundation stage par khodna zaroori hai — baad mein khodna lagbhag namumkin hota hai.
Q2. Headroom kya hota hai aur kitna chahiye?
A. Top floor ke upar shaft ki height — motor aur safety clearance ke liye. Standard lift mein 4.2–4.8 meter, hydraulic mein 2.8–3.2 meter. Kuch low-headroom MRL models 3.2–3.6 meter mein bhi lag jate hain.
Q3. 6-passenger lift ke liye shaft kitna bada chahiye?
A. Andaruni clear size lagbhag 1.6 m × 1.8 m. 8-passenger ke liye 1.9 m × 2.1 m. Cabin hamesha shaft se chhota hota hai kyunki rails aur counterweight ke liye jagah chahiye.
Q4. Kya bina pit ke lift lag sakti hai?
A. Haan — hydraulic home lift aur kuch low-pit MRL models mein bahut chhota ya zero pit chalta hai. Ye purane gharon ke liye best option hai.
Q5. Shaft mein paani ya bijli ki line daal sakte hain?
A. Nahi — lift shaft mein koi bhi external pipe ya wire allowed nahi hai. Ye safety norm hai.
Q6. Purane ghar mein jagah kam hai to kya option hai?
A. Hydraulic lift (chhota pit/headroom), low-headroom MRL, ya ghar ke bahar MS structure ka shaft — teeno options purane gharon mein kaam karte hain. Free site survey mein hum best option batate hain.
Confused hain? Free site survey karwa lijiye
Ye measurements padh kar andaza to lag gaya hoga, par final decision hamesha site dekh kar hota hai. Hum Dhanbad mein free site survey karte hain — shaft, pit, headroom, power sab naap kar aapko likhit mein batate hain ki kaunsi lift lagegi aur kitna kharcha aayega (Sample quotation).
Call ya WhatsApp: +91 95349 06139 — Cmax Engineering, Millat Nagar, Dhanbad. Ranchi aur Bokaro mein bhi survey available hai.