Overview
Truss-type floor deck is an engineered structural system that integrates steel trusses with cast-in-place concrete to form composite floor slabs. The design typically consists of prefabricated steel trusses welded to corrugated steel sheets, which act as permanent formwork during construction. This system originated in the late 20th century as an evolution of traditional rebar-and-concrete flooring, offering faster installation and reduced material usage. Modern versions often incorporate galvanized steel for corrosion resistance and may include embossments on the steel sheet for improved bond with concrete.
Structure and Working Principle
The deck's core component is the triangular steel truss, comprising top and bottom chords connected by diagonal web members. These trusses are factory-welded at regular intervals (typically 150-300mm) to the profiled steel deck, creating a rigid framework. During construction, the deck spans between steel beams or walls, providing immediate working platform. After concrete pouring, the steel trusses become integral reinforcement, significantly enhancing the slab's tensile strength. The composite action allows thinner concrete sections compared to conventional slabs while meeting structural requirements.
Key Features
Structural efficiency is the standout feature, with load-bearing capacities ranging from 3-15 kN/m² depending on design. The open-web design facilitates easy routing of MEP (mechanical, electrical, plumbing) services through the floor system. Fire resistance typically reaches 60-120 minutes without additional protection due to concrete encapsulation of steel members. Acoustic performance is superior to pure steel decks, with sound transmission class (STC) ratings of 45-55. The system also allows for vibration control in sensitive applications like laboratories or hospitals.
Application Areas
Commercial high-rises benefit from the system's lightweight nature and rapid installation, reducing overall construction time by 20-30% compared to conventional formwork. Industrial facilities utilize its long-span capabilities (up to 6m unsupported) for column-free spaces. Residential projects employ thinner versions (60-80mm total depth) for mid-rise constructions. The system is particularly advantageous in seismic zones due to its ductile behavior. Specialized versions exist for parking structures, featuring increased corrosion protection and higher load ratings.
Maintenance and Precautions
Post-installation maintenance is minimal for interior applications. Exposed edges in outdoor settings may require sealants to prevent water ingress at concrete-steel interfaces. Periodic inspections should check for concrete cracks exceeding 0.3mm width. During installation, temporary bracing is critical until concrete achieves 75% design strength (typically 7-14 days). Workers must avoid concentrated loads on fresh decks exceeding 1.5 times the construction live load. Corrosion protection becomes essential in pools or chemical plants where chloride exposure occurs.
B2B Procurement Guide
Project specifications should clearly define: required fire rating (e.g., BS 476 or ASTM E119), maximum permissible deflection (usually L/180 for construction loads), and concrete cover over trusses (minimum 20mm). Lead times average 2-4 weeks for standard designs; custom configurations may require 6+ weeks. Bulk orders (500+ m²) often qualify for 5-8% quantity discounts. Consider FOB pricing for large projects, as deck units stack efficiently for transport (approximately 100m² per truckload). Always verify factory production control certificates for quality assurance.
Related Manufacturers
- 主营：建筑箍筋、钢筋套丝、钢筋箍筋、钢筋桁架、建筑桁架、桁架楼承板、开口楼承板、钢筋楼承板、混凝土桁架、桁架楼层板、钢结构楼承板、钢筋网片、双折边钢筋、安全网钢筋、不锈钢钢筋、建筑业钢筋、秦皇岛钢筋、石家庄钢筋、楼层建设钢筋、长度定制钢筋、钢筋焊接网片
- 主营：几字型钢、免浇筑楼承板、河北楼承板、数据中心瓦楞板、数据中心吊顶板
- 主营：KST板、发泡水泥复合板、loft夹层楼板、钢骨架轻型板、钢骨架轻型屋面板、钢边框保温隔热轻型板、钢骨架膨石轻型板、预制及拼装式轻型板、保温隔热轻型板、钢桁架轻型复合板、钢框轻型屋面板、大骨架轻型板、钢构轻型复合板、钢骨架轻型墙板、钢构轻型楼承板、钢构轻型板、泡沫混凝土复合板、kst屋面板、kst板、屋面网架楼板、钢房改造夹层楼板
- 主营：角钢、槽钢、镀锌方管、H型钢、镀锌H型钢、c型钢、楼承板、方管、钢板、镀锌钢板、工字钢、镀锌槽钢、镀锌角钢、彩钢瓦、镀锌圆管、镀锌钢管、预埋件、地脚螺栓、不锈钢天沟折件、钢结构预制加工、焊管、无缝管
- 主营：[]
- 主营：[]
- 主营：[]
- 主营：压型钢板、钢筋桁架楼层板、型钢、墙面板、复合板
- 主营：几字型钢、闭口楼承板、开口楼承板、楼承板、钢筋桁架楼承板、彩钢瓦
- 主营：隔热防晒、钢结构围挡、屋面承重板材、桁架楼承板、隔离围挡护栏
- 主营：钢骨架网架板、钢墙板、楼面板、钢骨架轻型板、钢筋桁架楼承板、钢桁架轻型板、钢骨架轻型屋面板、大型屋面板、新型轻质板材、钢骨架屋面板、墙面板、屋面板、钢结构楼板、钢骨架外墙板、轻质板、栈桥板、网架板、loft楼板、发泡水泥、LOFT夹层楼板、屋面kst板、保温kst板、loft夹层板、KST板、钢骨架栈桥板
- 主营：一体化安装建筑用板、建筑内部钢制隔层架、波纹钢板、桁架楼承板、楼承板、压型楼承板、钢筋楼承板、镀锌楼承板、钢筋桁架楼承板、新型钢筋桁架楼承板、钢筋桁架模板、桁架压型板、组合式楼承板、装配式楼承板、免拆模板楼承板、压型钢板组合板、钢筋桁架叠合板、压型金属板、压型钢板楼层用、一体化安装楼层板、易装一体建筑板材、钢结构工程定制件、组合楼层板、加工定制钢结构工程、镀锌钢承板
- 主营：屋面板、钢结构、闭口压、楼承板、复合压、双檩条、缩口压、热镀锌、楼面板、镀锌几、钢承板、缩口板、横装板、60-50-2.0、闭口板、墙面板、铝镁锰、面100腰、彩钢瓦、隔间架、镀锌板、屋面瓦、彩钢板、彩钢压、厚闭口
- 主营：净化板、复合岩棉板、钢结构加工、楼承板、钢筋桁架楼承板、c型钢、z型钢、几字型钢、闭口楼承板、开口楼承板、燕尾楼承板、u型钢、钢结构施工、光伏支架、角钢
- 主营：钢筋桁架楼承板、楼承板、c型钢、z型钢、几字型钢
- 主营：输送机防尘罩、钢结构、折叠房、楼承板、C型钢、装配式楼承板、输送机防护罩、输送机防雨罩、彩钢瓦、净化板、彩钢板、镀锌檩条、网架结构、430铝合金、铝镁锰板、彩钢岩棉、预埋螺栓、聚氨酯板、集装箱板、组合楼板、镀锌天沟、泡沫板、网架料仓、金属屋面
- 主营：钢筋网片、冷轧带肋钢筋、冷拔丝钢筋网片、钢筋桁架、细丝钢筋桁架、小圆径钢筋桁架、边坡钢筋网片、工地钢筋网片、建筑钢筋网片、煤矿用钢筋网片、工地螺纹钢筋网片、建筑工地螺纹钢筋网片、工程焊接钢筋网片、澳标边坡防护网片、澳标热轧钢筋网片、塑料支架、澳标网片塑料支撑托、澳标网片塑料座架、澳标网片塑料固座、澳标网片塑料锁座、澳标网片塑料搁座、澳标网片塑料底托、澳标网片塑料支承座、澳标网片塑料加固座、澳标网片塑料定位架
- 主营：塑料零件、雨水回收、塑料制品、海绵模块、蓄水模块、塑胶制品、化工桶罐、塑料轴承轮、塑料包装盒、雨水调蓄池、汽车零件加工、雨水收集设备、塑胶模具定制、塑料水箱加工、雨水收集系统、汽车塑料配件、聚碳尼龙注塑件、食品机油包装桶、制造电视机塑料、尼龙注塑件定制
- 主营：空心楼盖、塑料模壳、内置芯模、钢筋桁架楼承板、钢筋桁架、塑料建筑模板、中空塑料、建筑模壳、模壳租赁、建筑泡沫模壳
- 主营：彩钢卷、镀锌卷、铝卷、楼承板、C型钢、Z型钢、免浇筑楼承板、不锈钢、阳光瓦、采光瓦、彩钢瓦、镀锌板、冷轧卷、锌铝镁、热轧板、铝箔、打包带、彩铝卷、工字钢、扁钢、电缆桥架、镀锌打包带、烤蓝打包带、新宇彩钢卷、角钢
- 主营：彩钢板、彩钢瓦、檩条、楼承板、C型钢、Z型钢、几字型钢、免浇筑楼承板、楼承瓦、彩钢房、钢结构、岩棉彩钢板、彩钢岩棉板、保温彩钢板、彩钢保温板、夹芯彩钢板、彩钢夹芯板、夹心彩钢板、彩钢夹心板、阻燃彩钢板、采光板、采光瓦、防腐板、钢结构厂房、彩板房
- 主营：钢结构加工、钢结构工程、钢结构厂房、钢筋桁架楼层板、净化板、净化工程、洁净板、无尘车间、钢结构、北京钢结构加工、河北钢结构加工、钢结构桥梁、钢结构框架、钢结构仓库、北京净化板、北京彩钢板、岩棉净化板、彩钢夹芯板、钢结构罩棚、钢结构连廊、钢结构夹层、钢结构楼梯、钢箱梁、钢梁钢柱加工、北京钢结构工程、河北钢结构工程