The case: delivering housing on a constrained site and budget

Las Ventanas was developed as part of Long Beach' s response to local affordable housing needs. The four-story, mixed-use complex contains 102 apartments, approximately 3,962 square feet of retail space and a semi-subterranean podium parking garage within a 148,000-square-foot development. The City of Long Beach announced the groundbreaking in 2019, and the public project record identified a mix of one-, two- and three-bedroom homes.[1][2]

The design brief combined several pressures familiar to North American multifamily housing: a constrained site of just over one acre, a reported $28 million project budget, extensive window openings and a sloped site that created an interface between concrete and wood construction.[2] At the third level, areas of concrete and wood floor construction had to work with wood shear walls that did not align with the concrete walls below.

The project team did not respond with one structural product. It combined traditional wood framing with plywood and OSB sheathing, glulam beams and LVL. This matters when evaluating the case: Las Ventanas demonstrates the value of an integrated engineered wood strategy, not an isolated product comparison.

Where structural LVL was used

Published project information states that glulam and LVL were used as headers, while LVL was used extensively as rim joists.[2] These are practical applications for LVL in residential and multifamily construction.

A header transfers loads around a door, window or other wall opening. Rim joists close the perimeter of a floor system and provide an important interface for floor, wall and connection details. At Las Ventanas, these uses fitted a building defined by many window openings and repetitive residential framing.

LVL is a type of structural composite lumber made by bonding thin wood veneers with exterior-grade adhesives and orienting them primarily in the longitudinal direction. APA describes LVL as having strength and stiffness properties established through qualification testing, with common applications including headers, beams, rim boards, floor and roof members, and certain columns or studs where permitted by design and code.[3]

For project teams, the value is predictability-not a universal span claim. LVL is available in different grades, depths and thicknesses, so the member must be selected from the specific manufacturer' s technical literature for the actual loads, span, bearing, connection and service conditions. A generic statement that LVL is "stronger than lumber" is not an adequate specification.

What the project achieved-and what should not be attributed to LVL alone

Las Ventanas retained the window openings that were important to the architectural concept while working within the project' s structural and budget constraints. The continuously sheathed exterior walls were designed using FTAO analysis, which accounts for sheathing around openings rather than treating every wall section as a separate full-height segment.

According to the published case report, the project team reduced the number of hold-downs by 30% to 40%. It also used straps in place of typical tie-down rods to transfer tension from floor to floor, which the project engineer said made labor and construction easier.[2]

Those results are relevant to an LVL case study, but they should be attributed correctly. The reduction in hold-downs came from the FTAO lateral-system strategy and continuous sheathing, not from LVL beams alone. Likewise, the project' s

reported material-cost and construction-efficiency advantages reflected the broader engineered wood package. LVL contributed as headers and rim joists within that coordinated system.

This distinction is important for procurement. A case study can demonstrate where LVL fitted and why predictable structural products were useful, but it cannot replace engineering calculations or prove that copying one member schedule will reproduce the same project outcome elsewhere.

Lessons for North American housing projects

Start with the structural function

Specify whether the LVL will serve as a header, beam, rim board or another member. Then define the opening, span, supported loads, bearing conditions, deflection criteria, connections and any fire or service requirements. Product selection follows the function; the product name does not define the design.

Coordinate openings, lateral systems and framing early

At Las Ventanas, window design, shear-wall behaviour and framing decisions were connected. Treating an LVL header as an isolated line item can miss conflicts with hold-downs, straps, floor edges and mechanical penetrations. Early coordination gives the engineer, architect, fabricator and installer an opportunity to resolve interfaces before material reaches the site.

Verify the exact product, not only the letters "LVL"

APA notes that structural composite lumber products may be developed under code-referenced specifications or proprietary evaluation methods and that the product mark identifies information such as the applicable standard, grade and product report.[3] Buyers should therefore request the manufacturer, product series, grade, dimensions, applicable evaluation or product report, and current design values.

Substitutions require review. Two LVL products of the same nominal size may not have identical published properties or connection requirements. The engineer of record should assess proposed changes rather than relying on a purchasing description alone.

Protect the member and follow installation limits

Most SCL products are recognized for dry-use conditions unless a producer has specific wet-use recognition.[3] Storage, weather protection, holes, notches, bearing and multi-ply fastening should follow the approved drawings and manufacturer' s literature. Jobsite modification can change the member' s structural behaviour; it should not be improvised from a generic online span table.

A practical LVL procurement checklist

Before approving a structural LVL order for a North American housing project, align the quotation and purchase order with the design documents:

Application: header, beam, rim board or other structural function.

Product identity: manufacturer, product series, grade and exact dimensions.

Design basis: loads, span, bearing, deflection limits and service conditions used for selection.

Documentation: current product or evaluation report, design values and installation literature.

Connections: hangers, fasteners, built-up member details and field-modification restrictions.

Traceability: product marks and lot information that can be checked at delivery.

Substitutions: written review and acceptance by the responsible design professional before shipment or installation.

Las Ventanas shows structural LVL working where it is most useful: as a predictable component inside a coordinated residential framing system. Its headers and rim joists supported the project' s framing strategy, while the wider engineered wood and FTAO approach addressed openings, lateral resistance and construction efficiency.

For buyers and project teams, the transferable lesson is simple: define the structural task first, select the documented LVL product second, and verify the delivered material before installation.

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