Engineering Grade Tool
RCC Slab (Lanter) Calculator
آر سی سی لنٹر کا مکمل مواد اور خرچہ کا حساب لگائیں
لمبائی
Feet
چوڑائی
Feet
موٹائی
Inches
کنکریٹ ریشو
سریہ فی مربع فٹ
کل رقبہ
600
Total Area (Sq. Ft)
ویٹ والیوم
250.0
Wet Volume (CFT)
ڈرائی والیوم (1.54)
385.0
Dry Volume (CFT)
Material Quantity Breakdown
Cement Required
سیمنٹ کی بوری
44.0
Bags (بوریاں)
Volume Equivalent:
55.0 CFT
Sand (Ravi / Chenab)
ریت (چناب / راوی)
110.0
CFT (فٹ)
Traditional Unit:
1.10 Sekra (سینکڑا)
Crush (Margalla / Bajri)
بجری (مارگلہ / سنگجانی)
220.0
CFT (فٹ)
Traditional Unit:
2.20 Sekra (سینکڑا)
Steel Rebar (60 Grade)
سریہ (گریڈ 60)
600.0
Kilograms (کلو)
Weight Conversion:
0.60 Ton | 15.0 Maund
Engineering Formulas & Technical Standards
Dry Volume Factor (1.54)
When water is added to dry cement, sand, and aggregate, air voids collapse and volume decreases by ~30–35%. A dry volume factor of 1.54 is standard in Pakistani engineering design to calculate raw dry materials required.
Cement Bag Constant
Standard 50kg cement bag volume is standardized at 1.25 CFT (0.035 m³). Bags formula:
Cement Dry Volume (CFT) ÷ 1.25.
Traditional “Sekra” (سینکڑا) Unit
In Pakistan’s local construction market, sand and crush are commonly ordered in “Sekra” or “Saikra”. 1 Sekra = 100 Cubic Feet (100 CFT).
Steel Calculation Rule
Standard residential RCC lanter (5-inch slab thickness) requires approximately 1.0 kg of Grade-60 steel per square foot of slab area including main bars, distribution bars, and overlap hooks.
Disclaimer: This calculator provides theoretical estimations based on standard Pakistani civil engineering practices. Actual site material consumption may vary by 3% to 5% depending on structural design specifications, steel lapping, beam depths, shuttering compaction, and field wastage.