This paper evaluated lignocellulosic biomass volume, in net and gross forms, consumed by Brazilian wood-based housing producers by building technique, as well as net volumes of fixed carbon and carbon dioxide by built area. Net volumetric values of consumed wood per available technique were obtained for single-storey house with 100 m² of built area, whose data collection was supported by face-to-face interviews with Brazilian producers. Gross volumes were obtained according to wood machining yield described in literature. Determinations of fixed carbon and carbon dioxide were verified by means of net volumes per built area, being calculated from data collected in the interviews. In wood consumption for this standard 100-m² house, most of construction techniques revealed average net volumes from 8 to 15 m³ and gross volumes from 15 to 24 m³ and from 13 to 21 m³, respectively, for 30% and 55% yields. In net volumes for 100-m² house, the lowest wood consumption was 2 m³ (or 0.02 m³ per m² of built area) obtained by two versions of nailed clapboard technique, while the highest amount of wood consumed was 34 m³ (0.34 m³/m²) for modular technique in cross-laminated timber. As regards carbon fixation, contemporary techniques mostly based on eucalypt and pine species ranged from 30 to 40 kg_C/m², while this range was from 35 to 55 kg_C/m² for traditional techniques largely made with natives. For native woods, the lowest carbon fixation was obtained by stick with masonry technique with paricá (12 kg_C/m²), and the highest value was observed in log-home technique using sapucaia (92 kg_C/m²). In exotics, modular for construction site with loblolly pine presented the lowest fixation (19 kg_C/m²), and modular technique in cross-laminated timber with blue spotted gum had the highest level (107 kg_C/m²). High wood consumptions were influenced by obsolete production technologies and robust techniques, evincing expressive fixations.

本文评估了巴西木质房屋生产商通过建筑技术消耗的木质纤维素生物质净量和总量，以及建筑面积固定碳和二氧化碳的净量。对于建筑面积为100 m ²的单层房屋，获得了每种可用技术消耗的木材净体积值，其数据收集得到了与巴西生产商的面对面访谈的支持。根据文献中描述的木材加工产量获得总体积。固定碳和二氧化碳的测定通过每个建筑面积的净体积来验证，该净体积是根据采访中收集的数据计算得出的。该标准的木材消耗量为100-m ²房屋，大多数施工技术显示平均净体积分别为8至15 m ³和总体积分别为15至24 m ³和13至21 m ³，产率为30％和55％。在100 m ²房屋的净容积中，通过两种钉钉隔板技术获得的最低木材消耗量为2 m ³（或每m ²建筑面积0.02 m ³），而最高木材消耗量为34 m ³（0.34 m ³ / m ²）用于交叉层压木材中的模块化技术。至于碳固定，大多是基于桉树和松树物种当代技术范围从30至40kg _Ç/ m ²，而对于主要由本地人制作的传统技术，该范围为35至55 kg _C / m ²。对于天然木材，通过用石工技术用paricá（12 kg _C / m ²）的棍棒获得的最低碳固定率，而使用乌木（sapucaia）的原木技术（92 kg _C / m ²）观察到的最高碳固定值。在异国情调中，用火炬松建造的模块化固定装置固定性最低（19 kg _C / m ²），而在带有蓝色斑点胶的交叉层压木材中使用模块化技术的固定性最高（107 kg _C / m ^2））。高木材消耗量受到过时的生产技术和强大的技术的影响，包括表现力的固定。