Roof Structure

Cost variations are affected by the size and spacing of the framing members, and the thickness and quality of the sheathing materials.

QD

Concrete Slab

QA

Concrete Joists, Slab

QAG

Concrete Joists, Lift Slab

QAE

Concrete Plank on Bearing Wall

QE

Concrete, Thin Shell

QC

Concrete, Precast Joists and Deck

QDA

Concrete Joists, Wood Sheathing Class C, D, S only

QSA

Steel Open System, Light Purlin Supports Only

QS

Steel Open System for Corrugated Metal

QK

Steel Joists, Steel Deck

QJ

Steel Joists, Steel Deck, Gypsum

QH

Steel Joists, Gypsum

QI

Steel Joists, Precast Plank

QG

Steel Joists, Concrete Slab

QM

Steel Joists, Wood Deck

QL

Steel Joists, Composition Deck

QX

Steel Space Frame

QXA

Steel, Architectural Space Frame

QTA

Wood Open System, Light Purlin Supports Only

QT

Wood Open System for Corrugated Metal

QAA

Wood Joists, Wood Deck

QO

Wood Joists, Composition Deck

QF

Wood, Lamella

QCA

Tongue & Groove, Exposed Rafters

QAF

Wood Joists, Prefabricated Panels

Monitor and Sawtooth Roofs

QSM

Steel Open System for Corrugated Metal, Monitor

QSS

Steel Open System for Corrugated Metal, Sawtooth

QKM

Steel Joists, Steel Deck, Monitor

QKS

Steel Joists, Steel Deck, Sawtooth

QMM

Steel Joists, Wood Deck, Monitor

QMS

Steel Joists, Wood Deck, Sawtooth

QLM

Steel Joists, Composition Deck, Monitor

QLS

Steel Joists, Composition Deck, Sawtooth

QTM

Wood Open System for Corrugated Metal, Monitor

QTS

Wood Open System for Corrugated Metal, Sawtooth

QAAM

Wood Joists, Wood Deck, Monitor

QAAS

Wood Joists, Wood Deck, Sawtooth

QOM

Wood Joists, Composition Deck, Monitor

QOS

Wood Joists, Composition Deck, Sawtooth

QCAM

Tongue & Groove, Exposed Rafters, Monitor

QCAS

Tongue & Groove, Exposed Rafters, Sawtooth

False-mansard Fascia

QAC

False-mansard Fascia, Metal Frame/Wood Sheathing

QAD

False-mansard Fascia, Wood Frame/Wood Sheathing

Marquees & Canopies

QZC

Canopy, Steel Frame

QZD

Canopy, Mansard Metal Frame

QYC

Canopy, Wood Frame

QYD

Canopy, Mansard Wood Frame

QZ

Marquee, Steel Frame

QY

Marquee, Wood Frame

Trusses and Girders

CAUTION: These components are generally not used with a full frame that includes the horizontal members.

QW

Glued Laminated Girders

QAB

Longspan Girders

QU

Steel Trusses

QV

Timber Trusses