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https://www.fuqingmuye.com/products/e10-structural-lvl/
E10 Structural LVL is engineered to meet or exceed the requirements for structural applications in construction. It is designed to provide reliable support and stability in load-bearing elements such as beams, columns, and joists. E10 Structural LVL is characterized by high strength and stiffness, allowing it to withstand heavy loads and resist bending or deflection. It is capable of supporting significant vertical and lateral forces, making it suitable for demanding structural applications.

Main Features of E10 Structural LVL
High Strength
Uniformity
Dimensional Stability
Versatility

Stair Stringer Technical Guide: Design, Construction, and Installation
Stair stringers are essential structural components that support the treads and risers of stairs. Properly designing, constructing, and installing stair stringers is crucial for ensuring safety, durability, and code compliance in stairway construction. In this comprehensive technical guide, we'll explore the key considerations and steps involved in working with stair stringers.

1. Design Considerations

Building Codes: Familiarize yourself with local building codes and regulations governing stair design, including requirements for tread depth, riser height, and maximum allowable span for stringers.

Load Requirements: Calculate the expected load on the stairs, considering factors such as occupancy type, anticipated foot traffic, and live loads (e.g., furniture moving, large gatherings).

Stringer Configuration: Determine the number of stringers needed based on the stair width and load requirements. Typical configurations include single stringers on each side or a central stringer with supporting posts.

2. Material Selection

Lumber Types: Choose suitable lumber for stringers, such as pressure-treated wood (for outdoor use) or engineered wood products like Laminated Veneer Lumber (LVL) for enhanced strength and stability.

Dimensional Lumber: Use 2x12 or larger lumber for stringers, ensuring they can support the required loads without excessive deflection.

3. Stringer Layout and Calculations

Riser and Tread Dimensions: Calculate the riser height and tread depth based on building code requirements and ergonomic considerations.

Stringer Angle and Pitch: Determine the stair pitch (typically between 30-40 degrees) and cut the stringers accordingly using a framing square or stair gauges.

4. Construction Steps

Cutting Stringers: Use a circular saw or stair jig to cut stringers accurately, ensuring uniformity in riser and tread dimensions.

Assembling Components: Attach treads and risers to the stringers using construction adhesive and fasteners (nails or screws), ensuring a secure connection.

Installing Stringers: Position and secure the stringers to the supporting structure (such as a ledger board or framing members) using appropriate fasteners and hardware.

5. Installation Tips

Use of Brackets: Consider using stair stringer brackets or hangers for additional support and stability.

Check for Level and Plumb: Use a level and plumb bob to ensure that stringers are installed correctly and that stairs are level and stable.