---
title: "Arroyo Thermal HQ : proposition de siège en bois massif et de laboratoire d'essais"
description: "Réponse d'Adeyemi Strand à la présélection d'Arroyo Thermal : un siège et laboratoire d'essais en bois massif de 68 000 pi² sur Springdale Road, chauffé et refroidi par 212 sondes géothermiques."
canonical: "https://pr-99.preview.formlio.com/fr/documents/austin-proposition-darchitecture-pour-preselection"
locale: "fr"
type: "document"
lastModified: "2026-10-20"
alternates:
  en: "https://pr-99.preview.formlio.com/documents/austin-architecture-shortlist-proposal.md"
---

# Arroyo Thermal HQ : proposition de siège en bois massif et de laboratoire d'essais

## Cover

### Your headquarters should run on what you sell.

*Shortlist response · Adeyemi Strand*

A 68,000 sq ft mass-timber HQ and test lab on Springdale Road, heated and cooled from the ground beneath it.

- Prepared for: Arroyo Thermal
- Interview: Tuesday, July 13, 2027
- Construction: $35.4m target

*Mass-timber headquarters on Springdale Road at evening*

*Adeyemi Strand Architects*

## The brief

### What is actually at stake

*The brief*

You closed a $140m Series C in May. You have 310 people on three leased floors downtown and a test lab in a rented warehouse in Round Rock. The lease ends August 2029.

The brief asks for one building: 46,000 sq ft of workplace, a 14,000 sq ft lab, and a public hall.

We read it as a sales problem. Every utility buyer who visits should leave having felt geoexchange work. If we have that wrong, the rest of this pitch is wrong too.

## The idea

No gas line. No cooling tower. 212 bores under the plaza.

## The concept

### The Heat Hall

*The Heat Hall with plant visible behind glass*

### Four floors of CLT

*Exposed CLT workplace floor*

### Porches, not curtain wall

*Shaded timber porch on the west face*

### The lab, on show

*Test lab seen from the viewing gallery*

## The numbers

### Carbon and energy, modeled

From our early whole-building energy model and a One Click LCA run on the concept massing, June 2027. Both will be rerun at every phase.

### Upfront carbon, kgCO2e per m²

| Label | Value |
| --- | --- |
| Steel and concrete | 541 |
| Hybrid steel and CLT | 388 |
| Mass timber, proposed | 268 |

### Energy use intensity, kBtu per sq ft per year

| Label | Value |
| --- | --- |
| ASHRAE 90.1-2022 baseline | 47 |
| Austin Energy 3-star | 38 |
| Proposed, geoexchange | 21 |

## Materials

### Five materials, nothing else

Southern yellow pine CLT, low-carbon concrete, Texas limestone, weathering steel screens and clear glass. Fewer materials, fewer trades, less carbon.

*Pine CLT panel edge*

*Concrete slab meeting a glulam column*

*Sawn limestone wall*

*Weathering steel screen shadow*

*Glazing reflecting live oaks*

## The practice

### Why us

Folake Adeyemi and Erik Strand founded the practice in 2017. Both partners would be on your project every week. Folake leads design, Erik leads delivery.

### Mass-timber buildings completed

**6**

### Sq ft of CLT

**412k**

### Average carbon below baseline

**41%**

### People, two partners

**22**

## Clients

### Clients on the work

> They told us at interview that our program was 9,000 sq ft too big, and showed why. They were right. That cut paid for the whole design fee.

— Priyanka Rao-Hensley, COO, Lumenfold Batteries

> Our CLT package arrived from the plant in 31 truckloads, sequenced to the crane. Erik had the delivery schedule in the model before we had a contractor.

— Jordan Tillery, VP Real Estate, Cinder Robotics

> Eighteen months after move-in, the building is using 23 kBtu per square foot. Their model said 24. I have never seen a prediction that close.

— Ana Lucia Ferraz, Head of Facilities, Halcyra Biosystems

## Fee

### Fee proposal

In US dollars. 6.4 percent of a $35.4m construction cost, split by AIA phase. Structural, MEP and geothermal engineering are separate appointments. Whole-life carbon reporting ($38,750) and a live energy dashboard for the Heat Hall ($27,400) are optional extras.

### Basic services

#### Five AIA phases, 6.4% of construction

| Item | Price |
| --- | --- |
| Schematic Design, 15% | $339,840.00 |
| Design Development, 20% | $453,120.00 |
| Construction Documents, 40% | $906,240.00 |
| Bidding and Negotiation, 5% | $113,280.00 |
| Construction Administration, 20% | $453,120.00 |

## First 90 days

### The first 90 days

If you appoint us after interview, Schematic Design starts Monday, August 2, 2027 and ends with a full presentation on Friday, October 29.

### 1. Kickoff and site walk

Week one. Partners, your leadership team and the geothermal engineer, on site together.

### 2. Test bore on the plaza

Weeks two to five. One 500 ft bore confirms ground conductivity before we size the field.

### 3. Program tested with your teams

Weeks three to seven. Six workshops, lab and workplace, before a single plan is drawn.

### 4. Schematic Design presented

Week thirteen. Massing, plans, model walkthrough in VR, carbon and energy figures.

## Next step

### After the interview

We hold the August start for you until Friday, July 30. After that our mass-timber team is committed elsewhere until January.

### Prepared by

**Folake Adeyemi**
Partner, Adeyemi Strand Architects

1100 E 5th Street, Suite 210
Austin, TX 78702
folake@adeyemistrand.com

### For approval by

**Dana Whitcomb**
Chief Operating Officer, Arroyo Thermal

Happy to take the board through the fee before the decision if that helps.

### Appoint Adeyemi Strand Architects

Confirming appoints us for basic services at 6.4 percent of construction cost, $2,265,600 on the current $35.4m budget, under AIA B101. Schematic Design starts Monday, August 2, 2027, and the first invoice follows on August 31.