Atir Strap And Beamd With 72 Install
Technical Evaluation Report: ANVIL Straps & BEAMD Systems with 72-Hour Installation Protocols
Date: October 26, 2023 Subject: Evaluation of ATIR Strap Technology and BEAMD Structural Systems under 72-Hour Install Constraints
Decoding "Beamd with 72 Install"
The phrase "beamd" is almost certainly a phonetic or typographical variant of "beamed" —meaning to secure or connect to a beam. The "with 72" likely refers to one of the following: atir strap and beamd with 72 install
- 72-inch beam span or depth – A very large structural beam (e.g., in industrial warehouses or commercial mezzanines).
- 72 series lumber – Engineered wood products like LVL (Laminated Veneer Lumber) in a 7.2" or 72mm thickness.
- 72 fasteners – Using 72 nails, screws, or bolts in the installation pattern.
- Model number – A specific hardware kit (e.g., ATIR-72).
Given typical construction standards, the most plausible interpretation is a 72-inch deep beam requiring multiple ATIR straps spaced every 72 inches, OR an installation that uses 72 individual fasteners to achieve full capacity.
For this guide, we will assume the latter: "ATIR strap and beamd with 72 install" means attaching an ATIR strap to a wooden or steel beam using exactly 72 specified fasteners (e.g., 10d common nails or #10 screws) to meet high-load design requirements. Technical Evaluation Report: ANVIL Straps & BEAMD Systems
Step 2: Positioning the ATIR Strap
- Place the ATIR strap flush against the beam. The slotted end should face the connection point (column or wall).
- The strap must be perfectly aligned with the beam’s edge. Use a level to verify plumb.
- Clamp the strap temporarily using spring clamps or quick-grip clamps.
Understanding the Components
1. The Atir Strap An Atir strap (sometimes spelled "attire strap" or referred to as a truss tie) is a long, perforated steel connector, typically 20-22 gauge galvanized steel. Its primary function is to resist uplift forces (wind or seismic) by creating a continuous tension path from the roof truss or rafter down to the top plate and, ultimately, to the foundation. Unlike a standard hurricane tie, an Atir strap is longer—often 24 to 48 inches—allowing it to wrap over the top of a rafter and extend down the interior or exterior face of the wall framing.
2. The Bonded Beam (or Structural Ridge Beam) A bonded beam refers to a built-up or engineered beam where multiple members (e.g., 2x lumber, LVL, or GluLam) are mechanically and adhesively bonded to act as a single monolithic unit. In the context of an Atir strap install, the “beam” is typically the structural ridge beam, a hip beam, or a continuous header that transfers loads to vertical supports. The bonding process (using structural adhesives and bolts or nails) ensures that the beam does not split or fail locally when subjected to the concentrated point loads introduced by tension straps. Decoding "Beamd with 72 Install" The phrase "beamd"
3. The “72 Install” – Decoding the Specification The term “72 install” is not a generic industry standard but rather a specific job specification or proprietary system requirement. Based on common engineering notation, it likely refers to one of the following:
- 72 Inch Strap Length: The Atir strap used is 72 inches (6 feet) long, allowing it to engage with multiple trusses or provide deep embedment into a concrete or masonry wall.
- 72 Fastener Pattern: The install requires 72 nails, screws, or bolts (e.g., 36 per side of the strap) to achieve a specified allowable load (e.g., 1,500+ lbs uplift).
- 72 Hours Curing Time: For bonded beams, “72 install” may mandate that the structural adhesive joining the beam components must cure for 72 hours before the Atir straps are tensioned or before dead loads are applied.
- Reference to IBC 2018 Section 72: Less likely, but could refer to a specific section of the International Building Code governing anchorage of tension ties in seismic zones D, E, or F.
For this piece, we will assume “72 Install” means: a 72-inch-long Atir strap, fastened with 72 specified nails, onto a beam that has been bonded and cured for 72 hours.
What Is an ATIR Strap?
Before diving into the 72 install specifics, let's define the anchor. ATIR stands for All-Thread Interlocking Reinforcement (a term coined by major connector brands like Simpson Strong-Tie). The ATIR strap is a long, perforated metal strap—typically 18 to 36 inches in length—made from 12- or 14-gauge galvanized steel. It features a series of nail or screw holes along its length and a reinforced, often widened, end with a hole for a through-bolt or all-thread rod.