Normally larger jobs, schools, hospitals, goverment use AIA billing documents - you as a contractor have to submit a schedule of values for the work - document name is A G703 Continutation sheet and it usually breaks out as labor and material to task, such as Deep Feeders, Slab Rough, wiring devices, distrubution equipment, feeder wiring, branch circuit wiring, telephone data securtiy conduits, and fire alarm - It is usually a good idea to include the line items Moblization (Normally 4% of contract) - Daily Clean up - and commissioning of systems - key to this is just like residential in that you build the up front items such as deep feeders "heavy" so that you if you run a good job get in the black and stay that way for the entire job - Flip side of coin the continutation sheet will quickly tell about troubles if you have billed for 70% of an item and have only really completed 45% -
below is a cut paste sample covering general areas of work or site work without going into the specific building areas - Normally these type pay applications - are built on a excel spread sheet where the continutation sheets as you show work completed feed the billing sheet or AIA G702 - Hope this helps...
Steve
10 Allowance Special Systems - w Profit & OH 28,890.00
20 Allowance Theatrical Lighting - w Profit & OH 208,008.00
30 Allowance Theatrical Sound - w Profit & OH 173,340.00
40 Payment & Performance Bond 47,110.00
50 Mobilization 78,500.00
60 Commissioning & Testing Systems 22,980.00
70 Temporary Power & Lights - Labor 28,590.00
80 Temporary Power & Lights - Material 31,980.00
90 Site UG Elec/Phone/Lgts Labor & Equip. 43,900.00
100 Site UG Elec/Phone/Lgts Labor & Equip. 59,345.00
110 Site Generator/ATS & Conduit & Wire Labor 17,280.00
120 Site Generator/ATS & Conduit & Wire Mat. 26,730.00
130 Service Entrance Conductors - Labor 9,850.00
140 Service Entrance Conductors - Mat. 22,035.00
150 Labor & Equipment - Install Tower 8,905.00
160 120' ITFS Concrete Tower - Mat. 14,127.00
170 IFTS Duct Bank to Bldg. - Labor&Equip. 8,558.00
180 IFTS Duct Bank to Building - Material 7,163.00
190 Power Distribution Equipment - Labor 52,328.00
200 Power Distribution Equipment - Material 173,257.00