L60m*W15m*H6m Steel Structure Warehouse With Mezzanine For Chile

 

 

Dimensions: Width 15m x Length 40m x Height 6m

Seismic Requirements: Earthquake resistance grade 8

Wind Load: 120 km/h

Snow Load: None mentioned

Roof & Wall Material: 0.5mm thick color steel single panel

Mezzanine: Located at one end, height 3m, length 15m x width 5m

Adaptable regions：Chile, Peru, AU, Indonesia, Papua New Guinea...

 

 

Primary Frames: Q345B steel columns and beams are recommended due to their high strength-to-weight ratio suitable for this size warehouse.

Secondary Members: Use Q235B steel for purlins, girts, and bracing to ensure adequate support while balancing cost-effectiveness.

Foundations: Reinforced concrete foundations designed to withstand local seismic conditions and wind loads.

Mezzanine Structure: Construct using Q345B steel to support the specified dimensions and load requirements.

 

 

The estimation will depend on the exact design and spacing of the frames, secondary members, and mezzanine. As a rough estimate:

Primary Frames: Approximately 30-40 kg/m²

Secondary Members: Around 10-15 kg/m²

Roof & Wall Panels: Consider the weight of 0.5mm color steel panels plus any insulation or additional layers.

Total Estimated Steel Weight: For the main building (excluding the mezzanine), approximately 18,000-24,000 kg for primary structures and 6,000-9,000 kg for secondary members. The mezzanine would add another 5,000-7,000 kg.

 

 

Design Parameters: Seismic Zone 8, Wind Speed = 120 km/h (~33.3 m/s), No Snow Load
Roof & Wall Cladding: 0.5 mm Color-Coated Steel Single Skin Panels
Mezzanine: 15m (L) × 5m (W) × 3m (H), located at one gable end

1. Main Structural Frame

Item	Description	Quantity	Unit Weight (kg/m)	Total Weight (kg)
C1	Main Columns (RHS or customized H-section, Q345B) – 6m height	14 pcs (7 bays @ ~6.67m o.c.)	~65 kg/m	14 × 6 × 65 = 5,460
B1	Rafter Beams (I-beam or tapered haunch beam, Q345B) – 15m span	14 pcs	~40 kg/m	14 × 15 × 40 = 8,400
B2	Ridge Beam / Eave Tie (if required for stability)	2 × 40m	~28 kg/m	80 × 28 = 2,240
BR	Roof Bracing (X-bracing, angle L50×5 or round bar)	~200 m total	~4 kg/m	800
WB	Wall Bracing (vertical & horizontal, similar to roof)	~150 m	~4 kg/m	600

Note: Bay spacing assumed at 6.67 m (40m ÷ 6 bays → 7 frames). Standard practice uses rigid portal frames with pinned or fixed bases depending on seismic demand. For Seismic Zone 8, moment-resisting connections are recommended.

 

2. Secondary Framing (Purlins & Girts)

Item	Description	Spacing	Length per Run	Qty of Runs	Total Length (m)	Section	Unit Weight (kg/m)	Total Weight (kg)
P1	Roof Purlins (C/Z-section, Q235B)	1.5 m o.c.	40 m	11 runs (15m ÷ 1.5 + 1)	440	C200×75×20×2.5	~5.5	2,420
G1	Wall Girts (C-section, Q235B)	1.2 m o.c.	40 m (long walls)	5 runs per side × 2 sides	400	C180×60×20×2.0	~4.2	1,680
G2	Gable End Girts (15m walls)	1.2 m o.c.	15 m	5 runs × 2 ends	150	C180×60×20×2.0	~4.2	630

 

3. Mezzanine Structure (15m × 5m)

Item	Description	Quantity	Unit Weight	Total Weight (kg)
MC1	Mezzanine Columns (SHS 150×150×5, Q345B) – 3m high	8 pcs	~25 kg/m	8 × 3 × 25 = 600
MB1	Primary Beams (IPE200 or HEA160, Q345B) – 5m span	10 pcs	~25 kg/m	10 × 5 × 25 = 1250
MB2	Secondary Beams (C150, Q235B) – 15m span @ 2.5m o.c.	7 pcs	~3.8 kg/m	7 × 15 × 3.8 = 399
Deck	1.0 mm Checker Plate or 0.8 mm Corrugated Steel Deck (non-composite)	75 m²	~8 kg/m²	600
Bracing	Mezzanine diagonal bracing (L40×4)	~50 m	~2.4 kg/m	120

Note: Mezzanine assumed to support light storage (~2–3 kN/m² live load). No concrete topping. steel staircase will be 830kgs/unit

 

4. Cladding System

Item	Description	Area (m²)	Weight (kg/m²)	Total Weight (kg)
Roof Panels	0.5 mm Color Steel Single Skin (trapezoidal profile, e.g., YX28-205-820)	15 × 40 = 600	~4.5	2,700
Wall Panels	0.5 mm Color Steel Single Skin (same profile)	2×(40×6) + 2×(15×6) – mezzanine cutout ≈ 660	~4.5	2,970
Fasteners & Accessories	Screws, washers, flashings, sealants	-	-	~500

Note: Mezzanine wall area deducted (~15×3 = 45 m²). Actual panel coverage may vary due to overlaps.

 

5. Connection Materials

Item	Description	Estimated Weight (kg)
Bolts (M20/M24, Grade 8.8)	For main frame & mezzanine	400
Welding Consumables	Electrodes, wire	150
Anchor Bolts (M24, L = 800mm)	2 per column × 14 = 28 pcs	120

 

6. Summary of Total Steel Usage

Category	Weight (kg)
Main Frame	17,500
Secondary Framing	4,730
Mezzanine Structure	3,799
Cladding (incl. accessories)	6,170
Connections & Misc.	670
TOTAL ESTIMATED STEEL WEIGHT	≈ 32,869 kg

Approx. Steel Intensity:

Main Building (600 m² floor): ~55 kg/m²

Including Mezzanine (675 m² effective): ~48.7 kg/m²

Notes & Assumptions

Seismic Design: Seismic Zone 8 (China GB 50011) implies high seismic coefficient (~0.2g–0.3g). Moment-resisting portal frames with ductile detailing are assumed.

Wind Load: 120 km/h ≈ 0.75 kN/m² basic pressure (per ASCE 7 or local code). Cladding and secondary members designed accordingly.

No Crane or Heavy Equipment: Live loads assumed as 0.3 kN/m² (roof) and 0.5 kN/m² (walls).

Foundation: Not included in steel takeoff (concrete/steel rebars excluded).

Corrosion Protection: All structural steel assumed hot-dip galvanized or painted (not quantified).

This material list provides a realistic preliminary estimate for procurement and costing. For construction, detailed drawings, connection design, and code compliance verification by a licensed engineer are essential.

 

 

This outline provides a basic framework for designing the proposed prefab warehouse. Detailed engineering analysis including load calculations, material specifications, and construction drawings should be carried out by qualified professionals.

CBC has a professional engineer team for archetecture design, structure design and calculation, shop drawing, TEKLA 3D, installation instructions...please contact with us with your detailed requirements, so we can know how to help you with your steel structure warehouse project.